首页 > 最新文献

Diamond and Related Materials最新文献

英文 中文
DLC based substrate enabling single molecule detection by Surface Enhanced Raman Spectroscopy (SERS) 利用表面增强拉曼光谱 (SERS) 实现单分子检测的 DLC 基底
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-12 DOI: 10.1016/j.diamond.2024.111775
Cristiane Costa Washek , Luz Stefany Murcia-Correa , Luis Francisco Bonetti , Evaldo José Corat , Vladimir Jesus Trava-Airoldi
This work shows a new and surprising application of Diamond-Like Carbon as Surface Enhanced Raman Spectroscopy (SERS) substrate. It was investigated with the well-known Rhodamine 6G (R6G) as SERS test molecule and extended the detection limit to the astonishing attomolar level, which means single molecule detection. The SERS substrate started by depositing excellent quality Diamond-Like Carbon (DLC) on aluminum, followed by laser modification of the DLC in a delimited area that defines the SERS substrate. The laser action gives electrical conductivity between the scratched surface and the aluminum. Silver was electrodeposited on this delimited area. The high Enhancement Factor was around 5 × 1012 at an R6G concentration of 7 × 10−18 M, observed only at few (and difficult to hit upon) points since the surface density was smaller than 2 R6G molecules/mm2. At each of the larger concentrations tested (7 × 10−15, 7 × 10−12, 7 × 10−9 and 7 × 10−6 M), the Raman intensities were in the same order of magnitude along the whole substrate, indicating a pretty homogeneous sensitivity. The repeatability among 5 samples tested at 7 × 10−12 M showed a standard deviation of only 18 %. The nano porous structure of the silver deposits, shown by Field Emission Gun Scanning Electron Microscopy (FEG-SEM) appears to be like many other studies with electroplated silver. However, the Raman spectra backgrounds show that amorphous carbon is interacting with the silver nanoparticles. A probable explanation for the superior EF is the synergistic contributions of plasmon enhancement from silver and chemical enhancement from amorphous carbon nanostructure.
这项工作展示了类金刚石碳作为表面增强拉曼光谱(SERS)基底的一种令人惊讶的新应用。该研究以众所周知的罗丹明 6G (R6G) 作为 SERS 测试分子,并将检测极限扩展到了惊人的阿托摩尔级,即单分子检测。SERS 基底首先是在铝上沉积高质量的类金刚石碳 (DLC),然后在确定 SERS 基底的限定区域内对 DLC 进行激光改性。激光作用使划痕表面与铝之间产生导电性。银被电沉积在这一限定区域。在 R6G 浓度为 7 × 10-18 M 时,高增强因子约为 5 × 1012,由于表面密度小于 2 个 R6G 分子/平方毫米,因此仅在少数几个点(难以命中)观察到。在测试的每种较大浓度(7 × 10-15、7 × 10-12、7 × 10-9 和 7 × 10-6M)下,拉曼强度在整个基底上都处于同一数量级,表明灵敏度相当均匀。在 7 × 10-12 M 条件下测试的 5 个样品的重复性显示,标准偏差仅为 18%。场发射枪扫描电子显微镜(FEG-SEM)显示,银沉积物的纳米多孔结构与其他许多电镀银的研究结果相同。然而,拉曼光谱背景显示,无定形碳与纳米银粒子发生了相互作用。银的等离子体增强和无定形碳纳米结构的化学增强的协同作用可能是产生卓越 EF 的一个原因。
{"title":"DLC based substrate enabling single molecule detection by Surface Enhanced Raman Spectroscopy (SERS)","authors":"Cristiane Costa Washek ,&nbsp;Luz Stefany Murcia-Correa ,&nbsp;Luis Francisco Bonetti ,&nbsp;Evaldo José Corat ,&nbsp;Vladimir Jesus Trava-Airoldi","doi":"10.1016/j.diamond.2024.111775","DOIUrl":"10.1016/j.diamond.2024.111775","url":null,"abstract":"<div><div>This work shows a new and surprising application of Diamond-Like Carbon as Surface Enhanced Raman Spectroscopy (SERS) substrate. It was investigated with the well-known Rhodamine 6G (R6G) as SERS test molecule and extended the detection limit to the astonishing attomolar level, which means single molecule detection. The SERS substrate started by depositing excellent quality Diamond-Like Carbon (DLC) on aluminum, followed by laser modification of the DLC in a delimited area that defines the SERS substrate. The laser action gives electrical conductivity between the scratched surface and the aluminum. Silver was electrodeposited on this delimited area. The high Enhancement Factor was around 5 × 10<sup>12</sup> at an R6G concentration of 7 × 10<sup>−18</sup> M, observed only at few (and difficult to hit upon) points since the surface density was smaller than 2 R6G molecules/mm<sup>2</sup>. At each of the larger concentrations tested (7 × 10<sup>−15</sup>, 7 × 10<sup>−12</sup>, 7 × 10<sup>−9</sup> and 7 × 10<sup>−6</sup> M), the Raman intensities were in the same order of magnitude along the whole substrate, indicating a pretty homogeneous sensitivity. The repeatability among 5 samples tested at 7 × 10<sup>−12</sup> M showed a standard deviation of only 18 %. The nano porous structure of the silver deposits, shown by Field Emission Gun Scanning Electron Microscopy (FEG-SEM) appears to be like many other studies with electroplated silver. However, the Raman spectra backgrounds show that amorphous carbon is interacting with the silver nanoparticles. A probable explanation for the superior EF is the synergistic contributions of plasmon enhancement from silver and chemical enhancement from amorphous carbon nanostructure.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111775"},"PeriodicalIF":4.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First principles study of the electronic and mechanical properties of a porous carbon 多孔碳电子和机械特性的第一原理研究
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-12 DOI: 10.1016/j.diamond.2024.111769
Geng-Xin Yin, Shi-Jie Lv, Xin-Xin Wang, Zhen-Long Lv
Carbon is a versatile element in the periodic table, which can form many allotropes with various properties in nature. In this work, the electronic and mechanical properties of a low energy porous carbon, a topological nodal line material, are studied by first principles method. Elastic and dynamical stabilities under hydrostatic pressure are investigated, which reveal that the dynamical instability occurs first. It is a material with negative linear compressibility along the a axis. Tension and compression strains are applied in different crystal orientations to obtain the corresponding stresses. The results indicate that the c axis can endure the smallest strains, the a axis can withstand moderate ones while the b axis can bear the largest ones, however, the resulted stresses have very different behaviors. Shear strains are exerted on different crystal planes to see the corresponding mechanical responses, which uncover that the (100)[010] shear pattern has the lowest critical stress than other shear patterns. The crystal structure, dynamical stability, and electron density difference under the critical strains are checked. The reasons for the different mechanical behaviors under pressure and strain are proposed. The effects of pressure and strain on its topological property are also studied.
碳是元素周期表中的一种多功能元素,在自然界中可以形成许多具有不同性质的同素异形体。本研究采用第一性原理方法研究了拓扑节点线材料--低能多孔碳的电子和机械特性。研究发现,静水压力下的弹性稳定性和动力学稳定性首先出现动力学不稳定性。这是一种沿 a 轴具有负线性可压缩性的材料。在不同的晶体取向上施加拉伸和压缩应变,以获得相应的应力。结果表明,c 轴可以承受最小的应变,a 轴可以承受中等的应变,而 b 轴可以承受最大的应变。对不同的晶面施加剪切应变,观察其相应的力学响应,结果发现 (100)[010] 剪切模式的临界应力比其他剪切模式最低。研究还检测了临界应变下的晶体结构、动态稳定性和电子密度差。提出了在压力和应变下产生不同力学行为的原因。此外,还研究了压力和应变对其拓扑特性的影响。
{"title":"First principles study of the electronic and mechanical properties of a porous carbon","authors":"Geng-Xin Yin,&nbsp;Shi-Jie Lv,&nbsp;Xin-Xin Wang,&nbsp;Zhen-Long Lv","doi":"10.1016/j.diamond.2024.111769","DOIUrl":"10.1016/j.diamond.2024.111769","url":null,"abstract":"<div><div>Carbon is a versatile element in the periodic table, which can form many allotropes with various properties in nature. In this work, the electronic and mechanical properties of a low energy porous carbon, a topological nodal line material, are studied by first principles method. Elastic and dynamical stabilities under hydrostatic pressure are investigated, which reveal that the dynamical instability occurs first. It is a material with negative linear compressibility along the <em>a</em> axis. Tension and compression strains are applied in different crystal orientations to obtain the corresponding stresses. The results indicate that the <em>c</em> axis can endure the smallest strains, the <em>a</em> axis can withstand moderate ones while the <em>b</em> axis can bear the largest ones, however, the resulted stresses have very different behaviors. Shear strains are exerted on different crystal planes to see the corresponding mechanical responses, which uncover that the (100)[010] shear pattern has the lowest critical stress than other shear patterns. The crystal structure, dynamical stability, and electron density difference under the critical strains are checked. The reasons for the different mechanical behaviors under pressure and strain are proposed. The effects of pressure and strain on its topological property are also studied.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111769"},"PeriodicalIF":4.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bending response performance in nitrogen-doped reduced graphene oxide-PEDOT:PSS: The impact of nitrogen flow rate on the nitrogen doping configurations 氮掺杂还原氧化石墨烯-PEDOT:PSS 的弯曲响应性能:氮气流速对氮掺杂配置的影响
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-12 DOI: 10.1016/j.diamond.2024.111771
Shafarina Azlinda Ahmad Kamal , Richard Ritikos , Boon Tong Goh , Syed Muhammad Hafiz , Hideki Nakajima , Sarayut Tunmee
Mechanical bending sensors play a pivotal role in various applications, from wearable devices to healthcare monitoring systems. The integration of nitrogen-doped reduced graphene oxide (NrGO) materials has emerged as a versatile approach, offering a promising avenue for enhancing the performances of these sensors. Various nitrogen doping configurations within the materials matrix have been found to profoundly influence the sensor's bending response. In this work, we identified that pyrrolic-N doping configurations were more dominant at lower nitrogen flow rates of 10 and 20 sccm, with the percentages of 52.9 and 48.7 %, respectively. These configurations exhibited a stable pattern of resistance changes in response to bending, particularly when subjected to bending angles of 55° and 65°. Despite some inconsistencies in bending response at lower bending angles, the sensors demonstrated heightened sensitivity, registering at 0.34 kPa. In contrast, sensors predominantly characterized by pyridinic-N configurations at 40 sccm maintained a consistent level of sensitivity across different bending angles, demonstrating remarkable stability and structural robustness, even after enduring 10,000 cycles. These findings indicated that pyridinic-N configurations play a critical role in enhancing sensor performance, ensuring reliable measurements across various mechanical deformations.
从可穿戴设备到医疗保健监测系统,机械弯曲传感器在各种应用中发挥着举足轻重的作用。氮掺杂还原氧化石墨烯(NrGO)材料的集成已成为一种多功能方法,为提高这些传感器的性能提供了一条大有可为的途径。研究发现,材料基质中的各种氮掺杂配置会对传感器的弯曲响应产生深远影响。在这项研究中,我们发现在 10 和 20 sccm 的较低氮气流速下,吡咯烷酮-氮掺杂构型占主导地位,比例分别为 52.9% 和 48.7%。这些构型在弯曲时表现出稳定的电阻变化模式,尤其是在弯曲角度为 55° 和 65° 时。尽管在较低的弯曲角度下弯曲响应有些不一致,但传感器的灵敏度较高,达到 0.34 kPa。相比之下,以 40 sccm 的吡啶-N 构型为主要特征的传感器在不同的弯曲角度下都能保持一致的灵敏度,即使在经受 10,000 次循环后也能表现出显著的稳定性和结构稳健性。这些研究结果表明,吡啶-N 构型在提高传感器性能方面起着至关重要的作用,可确保在各种机械变形情况下进行可靠的测量。
{"title":"Bending response performance in nitrogen-doped reduced graphene oxide-PEDOT:PSS: The impact of nitrogen flow rate on the nitrogen doping configurations","authors":"Shafarina Azlinda Ahmad Kamal ,&nbsp;Richard Ritikos ,&nbsp;Boon Tong Goh ,&nbsp;Syed Muhammad Hafiz ,&nbsp;Hideki Nakajima ,&nbsp;Sarayut Tunmee","doi":"10.1016/j.diamond.2024.111771","DOIUrl":"10.1016/j.diamond.2024.111771","url":null,"abstract":"<div><div>Mechanical bending sensors play a pivotal role in various applications, from wearable devices to healthcare monitoring systems. The integration of nitrogen-doped reduced graphene oxide (NrGO) materials has emerged as a versatile approach, offering a promising avenue for enhancing the performances of these sensors. Various nitrogen doping configurations within the materials matrix have been found to profoundly influence the sensor's bending response. In this work, we identified that pyrrolic-N doping configurations were more dominant at lower nitrogen flow rates of 10 and 20 sccm, with the percentages of 52.9 and 48.7 %, respectively. These configurations exhibited a stable pattern of resistance changes in response to bending, particularly when subjected to bending angles of 55° and 65°. Despite some inconsistencies in bending response at lower bending angles, the sensors demonstrated heightened sensitivity, registering at 0.34 kPa. In contrast, sensors predominantly characterized by pyridinic-N configurations at 40 sccm maintained a consistent level of sensitivity across different bending angles, demonstrating remarkable stability and structural robustness, even after enduring 10,000 cycles. These findings indicated that pyridinic-N configurations play a critical role in enhancing sensor performance, ensuring reliable measurements across various mechanical deformations.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111771"},"PeriodicalIF":4.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heterostructure of perovskite coupled graphitic carbon nitride for enhanced photodegradation under visible light 在可见光下增强光降解的过氧化物耦合氮化石墨异质结构
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-12 DOI: 10.1016/j.diamond.2024.111770
Alveera Sohel , Sakshi Beniwal , Praveen K. Surolia , Sarika Singh
This study aimed to prepare and characterize LaFeO3 nanoparticles loaded graphitic carbon nitride (LFO/g-C3N4) photocatalyst and investigate the degradation of organic pollutants under UV and natural sunlight exposure. It is observed that LFO nanoparticles of an average size of about 67 nm were distributed on g-C3N4 sheets through chemical bonding owing to the formation of a composite. Compared to LFO and g-C3N4, composite has a good absorption ability to harvest more UV and visible light due to its large surface area and pore size. The photocatalytic studies revealed that the g-C3N4/LFO composite exhibits higher catalytic efficiency and stability for methylene blue (MB) degradation under UV and visible light. Under UV light irradiation, the degradation efficiency of LFO, g-C3N4, and g-C3N4/LFO composite in synthetic wastewater was found to be around 50, 80 and 93 % with corresponding rate constants 0.05, 0.02, and 0.1 min−1 in 30 min, respectively. Under natural sunlight, the composite degraded 97 % of MB in 180 min with a rate constant of 0.016 min1. The higher photocatalytic activity of the composite was attributed to the interfacial charge transfer between LaFeO3 and g-C3N4, which are responsible for effective charge separation in the composite. Further, it has been investigated that singlet oxygen species (1O2) and hydroxyl radicals (OH) are the main reactive species that contributed considerably to the complete degradation of MB. The nanocomposite was also demonstrated to be a stable catalyst and can be reused without any further modification.
本研究旨在制备负载氮化石墨碳(LFO/g-C3N4)的 LaFeO3 纳米粒子光催化剂,并研究其在紫外线和自然光照射下降解有机污染物的特性。研究发现,平均尺寸约为 67 nm 的 LFO 纳米粒子通过化学键作用分布在 g-C3N4 片上,形成了一种复合材料。与 LFO 和 g-C3N4 相比,复合材料因其较大的表面积和孔径而具有良好的吸收能力,能吸收更多的紫外线和可见光。光催化研究表明,g-C3N4/LFO 复合材料在紫外光和可见光下降解亚甲基蓝(MB)具有更高的催化效率和稳定性。在紫外光照射下,LFO、g-C3N4 和 g-C3N4/LFO 复合材料在合成废水中的降解效率分别约为 50%、80% 和 93%,30 分钟内的相应速率常数分别为 0.05、0.02 和 0.1 min-1。在自然阳光下,复合材料在 180 分钟内降解了 97% 的甲基溴,速率常数为 0.016 分钟1 。复合材料较高的光催化活性归因于 LaFeO3 和 g-C3N4 之间的界面电荷转移,它们在复合材料中实现了有效的电荷分离。此外,研究还发现,单线态氧(1O2)和羟基自由基(-OH)是主要的反应物种,对甲基溴的完全降解起到了重要作用。研究还证明,这种纳米复合材料是一种稳定的催化剂,可以重复使用,无需进一步改良。
{"title":"Heterostructure of perovskite coupled graphitic carbon nitride for enhanced photodegradation under visible light","authors":"Alveera Sohel ,&nbsp;Sakshi Beniwal ,&nbsp;Praveen K. Surolia ,&nbsp;Sarika Singh","doi":"10.1016/j.diamond.2024.111770","DOIUrl":"10.1016/j.diamond.2024.111770","url":null,"abstract":"<div><div>This study aimed to prepare and characterize LaFeO<sub>3</sub> nanoparticles loaded graphitic carbon nitride (LFO/g-C<sub>3</sub>N<sub>4</sub>) photocatalyst and investigate the degradation of organic pollutants under UV and natural sunlight exposure. It is observed that LFO nanoparticles of an average size of about 67 nm were distributed on g-C<sub>3</sub>N<sub>4</sub> sheets through chemical bonding owing to the formation of a composite. Compared to LFO and g-C<sub>3</sub>N<sub>4,</sub> composite has a good absorption ability to harvest more UV and visible light due to its large surface area and pore size. The photocatalytic studies revealed that the g-C<sub>3</sub>N<sub>4</sub>/LFO composite exhibits higher catalytic efficiency and stability for methylene blue (MB) degradation under UV and visible light. Under UV light irradiation, the degradation efficiency of LFO, g-C<sub>3</sub>N<sub>4,</sub> and g-C<sub>3</sub>N<sub>4</sub>/LFO composite in synthetic wastewater was found to be around 50, 80 and 93 % with corresponding rate constants 0.05, 0.02, and 0.1 min<sup>−1</sup> in 30 min, respectively. Under natural sunlight, the composite degraded 97 % of MB in 180 min with a rate constant of 0.016 min<sup><img>1</sup>. The higher photocatalytic activity of the composite was attributed to the interfacial charge transfer between LaFeO<sub>3</sub> and g-C<sub>3</sub>N<sub>4,</sub> which are responsible for effective charge separation in the composite. Further, it has been investigated that singlet oxygen species (<sup>1</sup>O<sub>2</sub>) and hydroxyl radicals (<sup>•</sup>OH) are the main reactive species that contributed considerably to the complete degradation of MB. The nanocomposite was also demonstrated to be a stable catalyst and can be reused without any further modification.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111770"},"PeriodicalIF":4.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Honeycomb-like N, S dual-doped porous carbons derived from pomelo peel by effective exogenous doping strategy for supercapacitor electrodes 通过有效的外源掺杂策略从柚子皮中提取蜂窝状 N、S 双掺杂多孔碳,用于超级电容器电极
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-12 DOI: 10.1016/j.diamond.2024.111768
Hao Xu , Shan Zhong , Chuan Yuan , Xiaojun Zheng , Shuang Wang
Biomass has emerged as a pivotal precursor to synthesize supercapacitor electrode materials owing to its low-cost and plentiful resources. The optimization of heteroatoms and porous structures is believed to be a viable method to enhance the electrochemical properties of biomass-generated carbons. Herein, pomelo peel as a precursor using KOH as an activator and heteroatom dopants (urea and sodium sulfide) was successfully converted into N, S dual-doped porous carbons under the high temperature. The effective exogenous doping strategy realizes a high abundance of N/S heteroatoms, and KOH chemical activation promotes the development of nanopores and interconnected porosities. The resultant carbon CNS-800 with a high specific surface area of 1823.8 m2 g−1 and rich heteroatoms of N (2.51 wt%) and S (1.36 wt%) anticipately exhibits the outstanding electrochemical properties, including the excellent specific capacitance of 329.2 F g−1 at 1 A g−1 in a three-electrode (3E) system and the superb capacitance retention rate of 74.12 %. The fabricated CNS-800-based symmetric two-electrode (2E) supercapacitor demonstrates a good capacitance of 243.7 F g−1 and excellent cycling stability, as well as a superb energy density of 14.3 Wh kg−1. This work provides a compelling and cost-effective approach to transform biomass waste like pomelo peels into high-performance electrodes for supercapacitors.
生物质因其低成本和丰富的资源而成为合成超级电容器电极材料的重要前体。优化杂原子和多孔结构被认为是提高生物质生成碳的电化学性能的可行方法。本文以柚子皮为前驱体,使用 KOH 作为活化剂和杂原子掺杂剂(尿素和硫化钠),在高温条件下成功转化为 N、S 双掺杂多孔碳。有效的外源掺杂策略实现了 N/S 杂原子的高丰度,而 KOH 化学活化则促进了纳米孔和互连孔隙的发展。制备出的 CNS-800 碳具有 1823.8 m2 g-1 的高比表面积和丰富的 N(2.51 wt%)和 S(1.36 wt%)杂原子,可望表现出优异的电化学性能,包括在三电极(3E)系统中 1 A g-1 时 329.2 F g-1 的优异比电容和 74.12 % 的超高电容保持率。基于 CNS-800 制造的对称双电极(2E)超级电容器具有 243.7 F g-1 的良好电容和出色的循环稳定性,以及 14.3 Wh kg-1 的超高能量密度。这项研究为将柚子皮等生物质废弃物转化为高性能超级电容器电极提供了一种极具吸引力和成本效益的方法。
{"title":"Honeycomb-like N, S dual-doped porous carbons derived from pomelo peel by effective exogenous doping strategy for supercapacitor electrodes","authors":"Hao Xu ,&nbsp;Shan Zhong ,&nbsp;Chuan Yuan ,&nbsp;Xiaojun Zheng ,&nbsp;Shuang Wang","doi":"10.1016/j.diamond.2024.111768","DOIUrl":"10.1016/j.diamond.2024.111768","url":null,"abstract":"<div><div>Biomass has emerged as a pivotal precursor to synthesize supercapacitor electrode materials owing to its low-cost and plentiful resources. The optimization of heteroatoms and porous structures is believed to be a viable method to enhance the electrochemical properties of biomass-generated carbons. Herein, pomelo peel as a precursor using KOH as an activator and heteroatom dopants (urea and sodium sulfide) was successfully converted into N, S dual-doped porous carbons under the high temperature. The effective exogenous doping strategy realizes a high abundance of N/S heteroatoms, and KOH chemical activation promotes the development of nanopores and interconnected porosities. The resultant carbon CNS-800 with a high specific surface area of 1823.8 m<sup>2</sup> g<sup>−1</sup> and rich heteroatoms of N (2.51 wt%) and S (1.36 wt%) anticipately exhibits the outstanding electrochemical properties, including the excellent specific capacitance of 329.2 F g<sup>−1</sup> at 1 A g<sup>−1</sup> in a three-electrode (3E) system and the superb capacitance retention rate of 74.12 %. The fabricated CNS-800-based symmetric two-electrode (2E) supercapacitor demonstrates a good capacitance of 243.7 F g<sup>−1</sup> and excellent cycling stability, as well as a superb energy density of 14.3 Wh kg<sup>−1</sup>. This work provides a compelling and cost-effective approach to transform biomass waste like pomelo peels into high-performance electrodes for supercapacitors.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"150 ","pages":"Article 111768"},"PeriodicalIF":4.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fermi level regulation of single-walled carbon nanotubes by metal chloride doping for enhanced NO2 sensing performance 通过掺杂金属氯化物调节单壁碳纳米管的费米级以增强二氧化氮传感性能
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-12 DOI: 10.1016/j.diamond.2024.111777
Ruxuan Zhang , Mingkui Zhu , Tian Tian , Huan Yin , Tianhao Zhang , Jing Liu , Keyong Dong , Xun Li , Bo Zhao , Yanjie Su
Pristine single-walled carbon nanotubes (SWCNTs) typically exhibit limited sensitivity due to the low charge transfer dynamics between nanotubes and gas molecules. Among various enhancement methods, the Fermi level regulation proves to be effective in promoting the charge transfer between SWCNTs and gas molecules, consequently improving the sensing performance. Herein, we firstly report a non-destructive method to regulate the Fermi level of SWCNTs through doping metal chlorides, and the interfacial charge transfer between SWCNTs and different metal chlorides has been well investigated by combining Raman shift with X-ray photoelectron spectroscopy. Experimental results reveal that the interfacial charge transfer dynamics determine the sensing properties of SWCNTs doped with chlorides. The as-fabricated FeCl3-doped SWCNT sensors exhibit a high response of 196.9 % in response to 100 ppb NO2 gas with excellent selectivity. The Kelvin probe force microscope (KPFM) results directly prove the doping effect of metal chlorides due to the shift down of Fermi level of SWCNTs after doping FeCl3. Our work not only propose a novel method to controllably regulate the Fermi level of SWCNTs but also provide a guidance for high-performance SWCNT-based sensing devices.
原始单壁碳纳米管(SWCNTs)通常表现出有限的灵敏度,这是因为纳米管和气体分子之间的电荷转移动力学较低。在各种增强方法中,费米级调节被证明能有效促进 SWCNT 与气体分子之间的电荷转移,从而提高传感性能。本文首次报道了一种通过掺杂金属氯化物调节 SWCNTs 费米水平的非破坏性方法,并结合拉曼移动和 X 射线光电子能谱对 SWCNTs 和不同金属氯化物之间的界面电荷转移进行了深入研究。实验结果表明,界面电荷转移动力学决定了掺杂氯化物的 SWCNTs 的传感特性。制备的掺杂氯化铁的 SWCNT 传感器对 100 ppb 二氧化氮气体的响应高达 196.9%,具有极佳的选择性。开尔文探针力显微镜(KPFM)结果直接证明了金属氯化物的掺杂效应,这是由于掺杂 FeCl3 后 SWCNT 的费米级下移所致。我们的工作不仅提出了一种可控调节 SWCNT 费米级的新方法,而且为基于 SWCNT 的高性能传感设备提供了指导。
{"title":"Fermi level regulation of single-walled carbon nanotubes by metal chloride doping for enhanced NO2 sensing performance","authors":"Ruxuan Zhang ,&nbsp;Mingkui Zhu ,&nbsp;Tian Tian ,&nbsp;Huan Yin ,&nbsp;Tianhao Zhang ,&nbsp;Jing Liu ,&nbsp;Keyong Dong ,&nbsp;Xun Li ,&nbsp;Bo Zhao ,&nbsp;Yanjie Su","doi":"10.1016/j.diamond.2024.111777","DOIUrl":"10.1016/j.diamond.2024.111777","url":null,"abstract":"<div><div>Pristine single-walled carbon nanotubes (SWCNTs) typically exhibit limited sensitivity due to the low charge transfer dynamics between nanotubes and gas molecules. Among various enhancement methods, the Fermi level regulation proves to be effective in promoting the charge transfer between SWCNTs and gas molecules, consequently improving the sensing performance. Herein, we firstly report a non-destructive method to regulate the Fermi level of SWCNTs through doping metal chlorides, and the interfacial charge transfer between SWCNTs and different metal chlorides has been well investigated by combining Raman shift with X-ray photoelectron spectroscopy. Experimental results reveal that the interfacial charge transfer dynamics determine the sensing properties of SWCNTs doped with chlorides. The as-fabricated FeCl<sub>3</sub>-doped SWCNT sensors exhibit a high response of 196.9 % in response to 100 ppb NO<sub>2</sub> gas with excellent selectivity. The Kelvin probe force microscope (KPFM) results directly prove the doping effect of metal chlorides due to the shift down of Fermi level of SWCNTs after doping FeCl<sub>3</sub>. Our work not only propose a novel method to controllably regulate the Fermi level of SWCNTs but also provide a guidance for high-performance SWCNT-based sensing devices.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111777"},"PeriodicalIF":4.3,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of argon plasma treatment on carbon fiber surface characteric and its reinforcing polyimide composites interfacial properties at room and elevated temperatures 氩等离子处理对室温和高温下碳纤维表面特性及其增强聚酰亚胺复合材料界面性能的影响
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-10 DOI: 10.1016/j.diamond.2024.111765
Jing Wang, Zhengyin Yu, Shuang Yang, Zuhao Wang, Rong Ren, Xuhai Xiong
In high temperature conditions, this can cause considerable changes in the mechanical properties of the composite. In order to determine the structural and mechanical property changes that occur in composite materials at elevated temperatures, to elucidate the damage mechanisms at elevated temperatures, and to improve the stability and durability of the materials. This paper studies how plasma treatment time affects the surface polarity, roughness, wettability and mechanical properties of carbon fibers. The results showed that the best wettability was attained after 10 min of plasma treatment, and new oxygen-containing functional groups (COO- and -C=O) developed on the fiber surface. The fundamental explanation is that during plasma surface treatment, the CH group in the bisphenol A part chain segment present in the epoxy resin sizing agent's composition is oxidized, forming an organic oxide layer. In this paper, the plasma modification technology was utilized to improve the interfacial compatibility of carbon fiber and Polyimide (PI) resin, and the interlaminar shear strength reached 103.98 MPa, up 10.49 %, and the strength retention rate was 84.3 % at 300 °C. In this paper, the plasma modification technique was employed to increase the interfacial compatibility of carbon fiber and PI resin. It was found that the Inductively Coupled Plasma (ICP) treated carbon fiber surfaces underwent physical and chemical changes that effectively enhanced the interfacial compatibility with the resin. However, the chemical groups and physically etched regions on the surface of the plasma-modified fibers are able to impede the relative motion of the resin to a certain extent, thus improving the interfacial strength.
在高温条件下,这会导致复合材料的机械性能发生很大变化。为了确定复合材料在高温下发生的结构和机械性能变化,阐明高温下的损伤机理,提高材料的稳定性和耐久性。本文研究了等离子处理时间如何影响碳纤维的表面极性、粗糙度、润湿性和机械性能。结果表明,等离子处理 10 分钟后润湿性最佳,纤维表面形成了新的含氧官能团(COO- 和 -C=O)。其根本原因是在等离子表面处理过程中,环氧树脂上浆剂成分中双酚 A 部分链段中的 CH 基团被氧化,形成有机氧化物层。本文利用等离子体改性技术改善了碳纤维与聚酰亚胺(PI)树脂的界面相容性,层间剪切强度达到 103.98 MPa,提高了 10.49%,300 °C 时的强度保持率为 84.3%。本文采用等离子体改性技术提高了碳纤维与 PI 树脂的界面相容性。研究发现,经过电感耦合等离子体(ICP)处理的碳纤维表面发生了物理和化学变化,有效提高了与树脂的界面相容性。但等离子体改性纤维表面的化学基团和物理蚀刻区域能够在一定程度上阻碍树脂的相对运动,从而提高界面强度。
{"title":"Effects of argon plasma treatment on carbon fiber surface characteric and its reinforcing polyimide composites interfacial properties at room and elevated temperatures","authors":"Jing Wang,&nbsp;Zhengyin Yu,&nbsp;Shuang Yang,&nbsp;Zuhao Wang,&nbsp;Rong Ren,&nbsp;Xuhai Xiong","doi":"10.1016/j.diamond.2024.111765","DOIUrl":"10.1016/j.diamond.2024.111765","url":null,"abstract":"<div><div>In high temperature conditions, this can cause considerable changes in the mechanical properties of the composite. In order to determine the structural and mechanical property changes that occur in composite materials at elevated temperatures, to elucidate the damage mechanisms at elevated temperatures, and to improve the stability and durability of the materials. This paper studies how plasma treatment time affects the surface polarity, roughness, wettability and mechanical properties of carbon fibers. The results showed that the best wettability was attained after 10 min of plasma treatment, and new oxygen-containing functional groups (COO- and -C=O) developed on the fiber surface. The fundamental explanation is that during plasma surface treatment, the C<img>H group in the bisphenol A part chain segment present in the epoxy resin sizing agent's composition is oxidized, forming an organic oxide layer. In this paper, the plasma modification technology was utilized to improve the interfacial compatibility of carbon fiber and Polyimide (PI) resin, and the interlaminar shear strength reached 103.98 MPa, up 10.49 %, and the strength retention rate was 84.3 % at 300 °C. In this paper, the plasma modification technique was employed to increase the interfacial compatibility of carbon fiber and PI resin. It was found that the Inductively Coupled Plasma (ICP) treated carbon fiber surfaces underwent physical and chemical changes that effectively enhanced the interfacial compatibility with the resin. However, the chemical groups and physically etched regions on the surface of the plasma-modified fibers are able to impede the relative motion of the resin to a certain extent, thus improving the interfacial strength.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111765"},"PeriodicalIF":4.3,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on ultrasonic-assisted lapping performance and material removal behavior of diamond/SiC composites 金刚石/碳化硅复合材料的超声波辅助研磨性能和材料去除行为研究
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-10 DOI: 10.1016/j.diamond.2024.111767
Bo Xing , Guoqin Huang , Liqu Wu , Yangli Xu , Meiqin Zhang , Wenhan Zeng , Wenbin Zhong , Xipeng Xu
Diamond/SiC composites have emerged as a new generation of highly promising materials for semiconductor packaging due to their excellent thermal conductivity. However, the exceptionally hard diamond and SiC phases in the composites have made precision machining a substantial difficulty. This study specifically explores the utilization of ultrasonic-assisted lapping (UAL) to enhance the machining performance of diamond/SiC composites. The focus is on investigating the effects of UAL on the material removals, including the brittle-ductile transition of sample interfacial diamond at different ultrasonic conditions, as well as the surface morphology of diamond/SiC composites. The removal mechanism of diamond/SiC composites under different machining conditions and the transient impact action of the abrasive were systematically analyzed, taking into account the abrasive size, the mechanical effects of ultrasonic vibration, and the interplay of processing parameters. The experimental results reveal that UAL significantly changes the traditional removal mode of diamond/SiC composites. At a constant rotational speed, the diamond abrasive size in the lapping solution exerts the primary influence on the sample surface morphology, followed by the average power of ultrasonic. Compared to conventional lapping methods, UAL improves the removal rate by 10.3 %, 5.4 %, and 5.3 % for abrasive sizes of 8 μm, 4 μm, and 1 μm, respectively. Optimally, the best surface quality finish of diamond/SiC composites was achieved with a lapping solution containing 4 μm abrasive particles and an average ultrasonic vibrator power of 75 W. This study underscores the potential of UAL to enhance the efficiency and quality of diamond/SiC composite machining.
金刚石/碳化硅复合材料因其出色的导热性能而成为新一代极具潜力的半导体封装材料。然而,复合材料中硬度极高的金刚石和碳化硅相给精密加工带来了巨大困难。本研究特别探讨了如何利用超声波辅助研磨(UAL)来提高金刚石/碳化硅复合材料的加工性能。重点是研究 UAL 对材料去除的影响,包括不同超声条件下样品界面金刚石的脆-韧性转变,以及金刚石/SiC 复合材料的表面形貌。考虑到磨料尺寸、超声振动的机械效应以及加工参数的相互作用,系统分析了不同加工条件下金刚石/SiC 复合材料的去除机理以及磨料的瞬态冲击作用。实验结果表明,UAL 显著改变了金刚石/碳化硅复合材料的传统去除模式。在恒定转速下,研磨液中的金刚石磨料粒度对样品表面形态的影响最大,其次是超声波的平均功率。与传统研磨方法相比,磨料粒度为 8 μm、4 μm 和 1 μm 时,UAL 的去除率分别提高了 10.3%、5.4% 和 5.3%。这项研究强调了 UAL 在提高金刚石/碳化硅复合材料加工效率和质量方面的潜力。
{"title":"Study on ultrasonic-assisted lapping performance and material removal behavior of diamond/SiC composites","authors":"Bo Xing ,&nbsp;Guoqin Huang ,&nbsp;Liqu Wu ,&nbsp;Yangli Xu ,&nbsp;Meiqin Zhang ,&nbsp;Wenhan Zeng ,&nbsp;Wenbin Zhong ,&nbsp;Xipeng Xu","doi":"10.1016/j.diamond.2024.111767","DOIUrl":"10.1016/j.diamond.2024.111767","url":null,"abstract":"<div><div>Diamond/SiC composites have emerged as a new generation of highly promising materials for semiconductor packaging due to their excellent thermal conductivity. However, the exceptionally hard diamond and SiC phases in the composites have made precision machining a substantial difficulty. This study specifically explores the utilization of ultrasonic-assisted lapping (UAL) to enhance the machining performance of diamond/SiC composites. The focus is on investigating the effects of UAL on the material removals, including the brittle-ductile transition of sample interfacial diamond at different ultrasonic conditions, as well as the surface morphology of diamond/SiC composites. The removal mechanism of diamond/SiC composites under different machining conditions and the transient impact action of the abrasive were systematically analyzed, taking into account the abrasive size, the mechanical effects of ultrasonic vibration, and the interplay of processing parameters. The experimental results reveal that UAL significantly changes the traditional removal mode of diamond/SiC composites. At a constant rotational speed, the diamond abrasive size in the lapping solution exerts the primary influence on the sample surface morphology, followed by the average power of ultrasonic. Compared to conventional lapping methods, UAL improves the removal rate by 10.3 %, 5.4 %, and 5.3 % for abrasive sizes of 8 μm, 4 μm, and 1 μm, respectively. Optimally, the best surface quality finish of diamond/SiC composites was achieved with a lapping solution containing 4 μm abrasive particles and an average ultrasonic vibrator power of 75 W. This study underscores the potential of UAL to enhance the efficiency and quality of diamond/SiC composite machining.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111767"},"PeriodicalIF":4.3,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced compressive strength by Ti-Cr coating on cBN particle surface using vacuum vapor deposition 利用真空气相沉积技术在 cBN 颗粒表面镀 Ti-Cr 膜以增强抗压强度
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-09 DOI: 10.1016/j.diamond.2024.111762
Yufei Jiang , Lili Fang , Weifei Yang
In order to enhance compressive strength of the coating on cBN particles, this study proposes using vacuum vapor deposition to achieve a Titanium-Chromium (Ti-Cr) co-deposited coating on the surface of cBN particles. Base on deposition process of the Ti-Cr coating using vacuum vapor deposition technology, it proposed a simulation model by an Angular Coefficient Method (ACM), and conducts compressive strength experiments on the Ti-Cr coating of cBN particles. Using the simulation and analysis model, the effect of temperature on the formation of Ti-Cr coating during the reaction process was systematically analyzed, the molecular flow, the change of film thickness, and the deposition rate at different temperature stages was got, and verify the simulation results through experiments. The formation mechanism of Ti-Cr co-deposited coatings was derived by SEM, XRD characterization and reaction thermodynamic analysis. Experiments show that Ti-Cr co-deposited coatings are effective in increasing compressive strength, and the experimental results can be a guidance in controlling Ti/Cr amount in the coatings. In addition, it was found in experiments that by using vacuum vapor deposition technique, Ti/Cr powder mixing ratio of 1:1 provided the best compressive strength, and the compressive strength increased with higher Cr content in the coating after heating. This achievement is of significant importance for the formation of alloyed coatings on superhard materials, enhancing the wettability between the surfaces of superhard materials and their substrates under high-temperature conditions.
为了提高 cBN 颗粒涂层的抗压强度,本研究提出利用真空气相沉积技术在 cBN 颗粒表面实现钛铬(Ti-Cr)共沉积涂层。在利用真空气相沉积技术实现钛铬涂层沉积过程的基础上,提出了角度系数法(ACM)模拟模型,并对 cBN 颗粒的钛铬涂层进行了抗压强度实验。利用模拟分析模型,系统分析了反应过程中温度对 Ti-Cr 涂层形成的影响,得到了不同温度阶段的分子流动、膜厚变化和沉积速率,并通过实验验证了模拟结果。通过扫描电镜、XRD 表征和反应热力学分析,得出了 Ti-Cr 共沉积涂层的形成机理。实验表明,Ti-Cr 共沉积涂层能有效提高抗压强度,实验结果可作为控制涂层中 Ti/Cr 用量的指导。此外,实验还发现,采用真空气相沉积技术,钛/铬粉末混合比为 1:1 时,抗压强度最佳,加热后涂层中的铬含量越高,抗压强度越大。这一成果对于在超硬材料上形成合金涂层、提高超硬材料表面与其基体在高温条件下的润湿性具有重要意义。
{"title":"Enhanced compressive strength by Ti-Cr coating on cBN particle surface using vacuum vapor deposition","authors":"Yufei Jiang ,&nbsp;Lili Fang ,&nbsp;Weifei Yang","doi":"10.1016/j.diamond.2024.111762","DOIUrl":"10.1016/j.diamond.2024.111762","url":null,"abstract":"<div><div>In order to enhance compressive strength of the coating on cBN particles, this study proposes using vacuum vapor deposition to achieve a Titanium-Chromium (Ti-Cr) co-deposited coating on the surface of cBN particles. Base on deposition process of the Ti-Cr coating using vacuum vapor deposition technology, it proposed a simulation model by an Angular Coefficient Method (ACM), and conducts compressive strength experiments on the Ti-Cr coating of cBN particles. Using the simulation and analysis model, the effect of temperature on the formation of Ti-Cr coating during the reaction process was systematically analyzed, the molecular flow, the change of film thickness, and the deposition rate at different temperature stages was got, and verify the simulation results through experiments. The formation mechanism of Ti-Cr co-deposited coatings was derived by SEM, XRD characterization and reaction thermodynamic analysis. Experiments show that Ti-Cr co-deposited coatings are effective in increasing compressive strength, and the experimental results can be a guidance in controlling Ti/Cr amount in the coatings. In addition, it was found in experiments that by using vacuum vapor deposition technique, Ti/Cr powder mixing ratio of 1:1 provided the best compressive strength, and the compressive strength increased with higher Cr content in the coating after heating. This achievement is of significant importance for the formation of alloyed coatings on superhard materials, enhancing the wettability between the surfaces of superhard materials and their substrates under high-temperature conditions.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111762"},"PeriodicalIF":4.3,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improve wear resistance of C/C composites as artificial bone using diamond-like carbon coatings 利用类金刚石碳涂层提高 C/C 复合材料作为人工骨的耐磨性
IF 4.3 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS Pub Date : 2024-11-09 DOI: 10.1016/j.diamond.2024.111761
Xiang Zhang, Ling Wang, Jiahao Liang, Zhixia Cai, Chengfeng Wu, Zhoujian Tan, Jiqiao Liao
In this study, diamond-like carbon (DLC) coatings and silicon-doped diamond-like (Si-DLC) coatings were prepared on the surface of C/C composites by a combination of plasma-enhanced chemical vapor deposition (PECVD) and magnetron sputtering processes. The film composition, microstructure and atomic bond structure were characterized using X-ray photoelectron spectroscopy, field-emission scanning electron microscopy and Raman spectroscopy. The mechanical properties and friction behavior related to the Si element were investigated using nanoindentation and HT-1000 high temperature friction and wear tester. The biocompatibility of the materials was also evaluated by the MG-63 proliferation test. The results indicate that Si elements were successfully incorporated into the DLC films, bonding with C and O atoms, which altered the thermal stability and microstructure of the coatings, reduced the internal stress of the films, and increased disorder. Compared to C/C composites, all coated layers exhibited lower coefficients of friction, with the formation of transfer layers and graphitization induced by friction contributing to the excellent tribological performance. Both coatings showed no cytotoxicity and demonstrated good biocompatibility. Both coatings are effective in reducing wear and chip losses in C/C composites when used as artificial bones. This work suggests that diamond-like carbon coated C/C composites can be excellent structural materials for human body in biomedical science.
本研究结合等离子体增强化学气相沉积(PECVD)和磁控溅射工艺,在 C/C 复合材料表面制备了类金刚石碳(DLC)涂层和掺硅类金刚石(Si-DLC)涂层。利用 X 射线光电子能谱、场发射扫描电子显微镜和拉曼光谱对薄膜的成分、微观结构和原子键结构进行了表征。使用纳米压痕法和 HT-1000 高温摩擦磨损测试仪研究了与硅元素有关的机械性能和摩擦行为。此外,还通过 MG-63 增殖试验评估了材料的生物相容性。结果表明,硅元素成功地融入了 DLC 薄膜,与 C 原子和 O 原子结合,改变了涂层的热稳定性和微观结构,降低了薄膜的内应力,增加了无序性。与 C/C 复合材料相比,所有涂层的摩擦系数都较低,摩擦引起的转移层和石墨化的形成造就了卓越的摩擦学性能。两种涂层都没有细胞毒性,具有良好的生物相容性。在用作人工骨骼时,这两种涂层都能有效减少 C/C 复合材料的磨损和切屑损失。这项研究表明,类金刚石碳涂层的 C/C 复合材料可以成为生物医学领域中极佳的人体结构材料。
{"title":"Improve wear resistance of C/C composites as artificial bone using diamond-like carbon coatings","authors":"Xiang Zhang,&nbsp;Ling Wang,&nbsp;Jiahao Liang,&nbsp;Zhixia Cai,&nbsp;Chengfeng Wu,&nbsp;Zhoujian Tan,&nbsp;Jiqiao Liao","doi":"10.1016/j.diamond.2024.111761","DOIUrl":"10.1016/j.diamond.2024.111761","url":null,"abstract":"<div><div>In this study, diamond-like carbon (DLC) coatings and silicon-doped diamond-like (Si-DLC) coatings were prepared on the surface of C/C composites by a combination of plasma-enhanced chemical vapor deposition (PECVD) and magnetron sputtering processes. The film composition, microstructure and atomic bond structure were characterized using X-ray photoelectron spectroscopy, field-emission scanning electron microscopy and Raman spectroscopy. The mechanical properties and friction behavior related to the Si element were investigated using nanoindentation and HT-1000 high temperature friction and wear tester. The biocompatibility of the materials was also evaluated by the MG-63 proliferation test. The results indicate that Si elements were successfully incorporated into the DLC films, bonding with C and O atoms, which altered the thermal stability and microstructure of the coatings, reduced the internal stress of the films, and increased disorder. Compared to C/C composites, all coated layers exhibited lower coefficients of friction, with the formation of transfer layers and graphitization induced by friction contributing to the excellent tribological performance. Both coatings showed no cytotoxicity and demonstrated good biocompatibility. Both coatings are effective in reducing wear and chip losses in C/C composites when used as artificial bones. This work suggests that diamond-like carbon coated C/C composites can be excellent structural materials for human body in biomedical science.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"150 ","pages":"Article 111761"},"PeriodicalIF":4.3,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Diamond and Related Materials
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1