Pub Date : 2024-08-26DOI: 10.1557/s43578-024-01419-0
Avinash Kant Kaushal, Annu Kumar Lakshya, Anirban Chowdhury
Stabilization mechanisms involving doped zirconia systems have been discussed over the last 60 years. The primary objective of this work is to provide scientific clarifications regarding the relevance of Garvie factor for important doped zirconia systems. With the commercially popular compositions of yttria-stabilized zirconia (YSZ) systems, our results illustrate no relevance of a Garvie criterion for YSZ systems (for yttria doping ≥ 2.5 mol.%). The same was found to be true for ceria (12–20 mol.%)-doped zirconia (CeTZP) systems. The Garvie criterion seems to be strongly system dependent as it was found to be valid for tetragonal CaO-doped (3–4 mol.%) zirconia (CaSZ) systems. Contrary to a ‘consolidation factor’ that was credited for stabilization of tetragonal CaSZ ceramic, an opposite trend (between grain and particle size) was observed for YSZ and CeTZP systems. This was explained in terms of their possible difference and crossover between their respective surface and grain boundary diffusion parameters.
{"title":"Revisiting the validity of the ‘Garvie criterion’ for the stabilization of doped tetragonal zirconia systems","authors":"Avinash Kant Kaushal, Annu Kumar Lakshya, Anirban Chowdhury","doi":"10.1557/s43578-024-01419-0","DOIUrl":"https://doi.org/10.1557/s43578-024-01419-0","url":null,"abstract":"<p>Stabilization mechanisms involving doped zirconia systems have been discussed over the last 60 years. The primary objective of this work is to provide scientific clarifications regarding the relevance of Garvie factor for important doped zirconia systems. With the commercially popular compositions of yttria-stabilized zirconia (YSZ) systems, our results illustrate no relevance of a Garvie criterion for YSZ systems (for yttria doping ≥ 2.5 mol.%). The same was found to be true for ceria (12–20 mol.%)-doped zirconia (CeTZP) systems. The Garvie criterion seems to be strongly system dependent as it was found to be valid for tetragonal CaO-doped (3–4 mol.%) zirconia (CaSZ) systems. Contrary to a ‘consolidation factor’ that was credited for stabilization of tetragonal CaSZ ceramic, an opposite trend (between grain and particle size) was observed for YSZ and CeTZP systems. This was explained in terms of their possible difference and crossover between their respective surface and grain boundary diffusion parameters.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"49 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-26DOI: 10.1557/s43578-024-01423-4
Qing Chen
Soft actuators are widely employed in soft robotics, wearable sensors, and human–machine interfaces. Being assembled upon stimuli-responsive materials, the state-of-the-art soft actuators are presumed to not only perform complex robotic tasks, but also to be repaired after mechanical damage or long-term usage. Although meeting these requirements could be a challenge for actuators based on traditional thermosetting/thermoplastic elastomers, soft actuators built on restructurable materials can be an alternative, since both the actuation and healing functions rely on the stimuli-responsive structural rearrangement of these materials. Specifically, self-healing polymers have been demonstrated to be promising candidates for assembling restructurable actuators. This paper summarizes the reprogramming pathways of stimuli-responsive actuators; reviews the design strategies for constructing reprogrammable mono-layered actuators with the various types of dynamic polymer networks, especially with self-healing polymers; the design strategies for assembling bi- or multi-layered actuators with tailored interfacial structure, and proposes the outlook for the development of restructurable actuators.
{"title":"Restructurable materials for soft actuators","authors":"Qing Chen","doi":"10.1557/s43578-024-01423-4","DOIUrl":"https://doi.org/10.1557/s43578-024-01423-4","url":null,"abstract":"<p>Soft actuators are widely employed in soft robotics, wearable sensors, and human–machine interfaces. Being assembled upon stimuli-responsive materials, the state-of-the-art soft actuators are presumed to not only perform complex robotic tasks, but also to be repaired after mechanical damage or long-term usage. Although meeting these requirements could be a challenge for actuators based on traditional thermosetting/thermoplastic elastomers, soft actuators built on restructurable materials can be an alternative, since both the actuation and healing functions rely on the stimuli-responsive structural rearrangement of these materials. Specifically, self-healing polymers have been demonstrated to be promising candidates for assembling restructurable actuators. This paper summarizes the reprogramming pathways of stimuli-responsive actuators; reviews the design strategies for constructing reprogrammable mono-layered actuators with the various types of dynamic polymer networks, especially with self-healing polymers; the design strategies for assembling bi- or multi-layered actuators with tailored interfacial structure, and proposes the outlook for the development of restructurable actuators.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"36 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-26DOI: 10.1557/s43578-024-01414-5
Muhammad Asim Akhtar, Jan Novak, Christian Radwansky, Aldo. R. Boccaccini
Two-faced GBR membranes were fabricated by electrophoretic deposition (EPD) using a combination of biopolymers and mesoporous bioactive glass nanoparticles (MBGNs). The membrane design was aimed at leveraging the advantageous properties of both biopolymers and MBGNs. The dense composite layer consisted of chitosan (CS) incorporating MBGNs and it was functionalized with a phytotherapeutic drug, naringin (Nar). The porous layer consisted of CS-gelatin (Gel)- MBGNs as well as copper chelated chitosan (Cu(II)-CS)-Gel-MBGNs composites. EPD was conducted in direct current mode. The antibacterial activity of the membranes as a result of the presence of Cu(II) and Nar was confirmed. The films were cytocompatible when tested with MC3T3-E1 (pre-osteoblastic) and MG-63 (osteoblast like) cell lines. However, a slight cytotoxic effect of the releasing Cu(II) ions was determined. In contrast, Nar-loaded films revealed improved cell viability. The results indicate the high potential of EPD to fabricate bilayer structures for GBR applications.
{"title":"Fabrication and characterization of multifunctional, asymmetric bilayer films based on chitosan/gelatin/mesoporous bioactive glass nanoparticles for guided bone regeneration","authors":"Muhammad Asim Akhtar, Jan Novak, Christian Radwansky, Aldo. R. Boccaccini","doi":"10.1557/s43578-024-01414-5","DOIUrl":"https://doi.org/10.1557/s43578-024-01414-5","url":null,"abstract":"<p>Two-faced GBR membranes were fabricated by electrophoretic deposition (EPD) using a combination of biopolymers and mesoporous bioactive glass nanoparticles (MBGNs). The membrane design was aimed at leveraging the advantageous properties of both biopolymers and MBGNs. The dense composite layer consisted of chitosan (CS) incorporating MBGNs and it was functionalized with a phytotherapeutic drug, naringin (Nar). The porous layer consisted of CS-gelatin (Gel)- MBGNs as well as copper chelated chitosan (Cu(II)-CS)-Gel-MBGNs composites. EPD was conducted in direct current mode. The antibacterial activity of the membranes as a result of the presence of Cu(II) and Nar was confirmed. The films were cytocompatible when tested with MC3T3-E1 (pre-osteoblastic) and MG-63 (osteoblast like) cell lines. However, a slight cytotoxic effect of the releasing Cu(II) ions was determined. In contrast, Nar-loaded films revealed improved cell viability. The results indicate the high potential of EPD to fabricate bilayer structures for GBR applications.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"3 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-22DOI: 10.1557/s43578-024-01418-1
Jae Gu Jung, Ji Soo Roh, Jong Min Roh, Ho Bum Park, Si-Hyun Do
This study investigates the identification of multi-metal precipitate (MMP) synthesized by the co-precipitation of multi-metal cations (Ca2+, Mg2+, Fe2+, and Mn2+) using NaOH in the atmospheric CO2 and MMP-suspended solution with CO2 of 1 bar at 25 °C for 2 h (CO2-MMP) to evaluate the interaction with CO2. The MMP was identified as a complex composite consisting of layered double hydroxide (LDH), metal hydroxide, metal oxides, and carbonates as minor. The CO2-MMP shows the formation of carbonized minerals and dissolved LDH and Mg(OH)2 due to reduced pH. The CO2 uptake by CO2-MMP is as much as ~ 0.029 mg/mg, indicating the involvement of Ca from both Mg-calcite/aragonite and CaFe-LDH in carbonation. Moreover, the CO2 reaction improved the BET surface area of MMP by 150%, which indicates its potential for efficient CO2 interaction. This study provides valuable insights into the precipitation of multi-metal cations and their interaction with CO2.
Graphical abstract
本研究调查了在大气二氧化碳中使用 NaOH 与多金属阳离子（Ca2+、Mg2+、Fe2+ 和 Mn2+）共沉淀合成的多金属沉淀物（MMP）的鉴定，以及在 25 °C 下将 MMP 悬浮液与 1 bar 二氧化碳混合 2 小时（CO2-MMP），以评估其与二氧化碳的相互作用。经鉴定，MMP 是由层状双氢氧化物（LDH）、金属氢氧化物、金属氧化物和碳酸盐（次要成分）组成的复杂复合体。CO2-MMP 显示，由于 pH 值降低，形成了碳化矿物和溶解的 LDH 和 Mg(OH)2。CO2-MMP 对 CO2 的吸收量高达约 0.029 mg/mg，表明镁方解石/霰石和 CaFe-LDH 中的 Ca 参与了碳化过程。此外，二氧化碳反应还将 MMP 的 BET 表面积提高了 150%，这表明它具有与二氧化碳进行高效交互的潜力。这项研究为多金属阳离子的沉淀及其与二氧化碳的相互作用提供了宝贵的见解。
{"title":"CO2-induced multi-metal (Ca, Mg, Fe, Mn) precipitates and its interaction with CO2","authors":"Jae Gu Jung, Ji Soo Roh, Jong Min Roh, Ho Bum Park, Si-Hyun Do","doi":"10.1557/s43578-024-01418-1","DOIUrl":"https://doi.org/10.1557/s43578-024-01418-1","url":null,"abstract":"<p>This study investigates the identification of multi-metal precipitate (MMP) synthesized by the co-precipitation of multi-metal cations (Ca<sup>2+</sup>, Mg<sup>2+</sup>, Fe<sup>2+</sup><sub>,</sub> and Mn<sup>2+</sup>) using NaOH in the atmospheric CO<sub>2</sub> and MMP-suspended solution with CO<sub>2</sub> of 1 bar at 25 °C for 2 h (CO<sub>2</sub>-MMP) to evaluate the interaction with CO<sub>2</sub>. The MMP was identified as a complex composite consisting of layered double hydroxide (LDH), metal hydroxide, metal oxides, and carbonates as minor. The CO<sub>2</sub>-MMP shows the formation of carbonized minerals and dissolved LDH and Mg(OH)<sub>2</sub> due to reduced pH. The CO<sub>2</sub> uptake by CO<sub>2</sub>-MMP is as much as ~ 0.029 mg/mg, indicating the involvement of Ca from both Mg-calcite/aragonite and CaFe-LDH in carbonation. Moreover, the CO<sub>2</sub> reaction improved the BET surface area of MMP by 150%, which indicates its potential for efficient CO<sub>2</sub> interaction. This study provides valuable insights into the precipitation of multi-metal cations and their interaction with CO<sub>2</sub>.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"6 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The mechanical properties of Zn–0.4Mg binary alloys were improved by adding different mass fractions of Ca during the casting process. The microstructure, mechanical, electrochemical, and degradation properties of Zn–0.4Mg–nCa alloys were thoroughly investigated. The results demonstrate that the ternary alloys’ microstructure comprised matrix Zn and precipitated phases (Mg2Zn11 and CaZn13). The grain size of the ternary alloys was gradually refined with increased Ca content, and the quantity and composition of eutectic phases were altered. The tensile strength of the Zn–0.4Mg–0.4Ca alloy reached 161.12 MPa. The immersion test demonstrated that when the Ca content increased, the corrosion rate of the Zn–0.4Mg–nCa alloys gradually increased. In addition, the alloys’ corrosion mechanisms in simulated body fluids were discussed.
Graphical abstract
通过在铸造过程中添加不同质量分数的 Ca，Zn-0.4Mg 二元合金的机械性能得到了改善。对 Zn-0.4Mg-nCa 合金的微观结构、机械、电化学和降解性能进行了深入研究。结果表明，三元合金的微观结构由基体 Zn 和析出相（Mg2Zn11 和 CaZn13）组成。随着 Ca 含量的增加，三元合金的晶粒尺寸逐渐细化，共晶相的数量和组成也发生了变化。Zn-0.4Mg-0.4Ca 合金的抗拉强度达到 161.12 兆帕。浸泡试验表明，当 Ca 含量增加时，Zn-0.4Mg-nCa 合金的腐蚀速率逐渐增加。此外，还讨论了合金在模拟体液中的腐蚀机理。 图表摘要
{"title":"Composition design and performance analysis of Zn–0.4Mg–nCa biodegradable alloys","authors":"Tianwei Fu, Lin Ma, Kaicheng Lu, Gui Wang, Huixin Shen, Tongyong Guan","doi":"10.1557/s43578-024-01409-2","DOIUrl":"https://doi.org/10.1557/s43578-024-01409-2","url":null,"abstract":"<p>The mechanical properties of Zn–0.4Mg binary alloys were improved by adding different mass fractions of Ca during the casting process. The microstructure, mechanical, electrochemical, and degradation properties of Zn–0.4Mg–nCa alloys were thoroughly investigated. The results demonstrate that the ternary alloys’ microstructure comprised matrix Zn and precipitated phases (Mg<sub>2</sub>Zn<sub>11</sub> and CaZn<sub>13</sub>). The grain size of the ternary alloys was gradually refined with increased Ca content, and the quantity and composition of eutectic phases were altered. The tensile strength of the Zn–0.4Mg–0.4Ca alloy reached 161.12 MPa. The immersion test demonstrated that when the Ca content increased, the corrosion rate of the Zn–0.4Mg–nCa alloys gradually increased. In addition, the alloys’ corrosion mechanisms in simulated body fluids were discussed.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"19 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-21DOI: 10.1557/s43578-024-01420-7
Sanjha Mangrio, Aneela Tahira, Ihsan Ali Mahar, Ahmed Ali Hulio, Muhammad Ali Bhatti, Aqeel Ahmed Shah, Umair Aftab, Anjum Zehra Naqvi, Nek Muhammad Shaikh, Ayman Nafady, Elmuez Dawi, Abd Al Karim Haj Ismail, Brigitte Vigolo, Zafar Hussain Ibupoto
A method is presented in this paper for treating NiCo2O4 nanostructures with boric acid in an environmentally friendly and cost-effective manner. Boric acid was applied to chemically prepared NiCo2O4 nanostructures for different periods of time, including 30, 60, and 120 min. A variety of analytical techniques were used to examine the morphology, crystallinity, functional groups, and optical band gaps of the crystals. This resulted in the development of an electrochemical non-enzymatic ascorbic acid sensor using NiCo2O4 nanostructures treated with boric acid. After being infused with 0.5 M boric acid for 120 min, NiCo2O4 nanostructures demonstrated excellent performance for oxidizing AA in a phosphate buffer solution of pH 7.4. There was a wide linear range for non-enzymatic detection between 0.1 and 20 mM. We determined a limit of detection of approximately 0.003 mM and a limit of quantification of approximately 0.008 mM.
Graphical Abstract
本文介绍了一种用硼酸处理镍钴氧化物纳米结构的方法，该方法既环保又经济。将硼酸应用于化学制备的镍钴氧化物纳米结构中，时间分别为 30、60 和 120 分钟。使用了多种分析技术来检测晶体的形态、结晶度、官能团和光学带隙。最终，利用硼酸处理过的镍钴氧化物纳米结构开发出了一种电化学非酶抗坏血酸传感器。用 0.5 M 硼酸浸泡 120 分钟后，NiCo2O4 纳米结构在 pH 值为 7.4 的磷酸盐缓冲溶液中氧化 AA 方面表现出优异的性能。非酶检测的线性范围很宽，在 0.1 至 20 mM 之间。我们测定的检出限约为 0.003 mM，定量限约为 0.008 mM。
{"title":"Chemically treated NiCo2O4 nanostructures with boric acid for the development of high-performance electrocatalytic materials for non-enzymatic ascorbic acid sensor","authors":"Sanjha Mangrio, Aneela Tahira, Ihsan Ali Mahar, Ahmed Ali Hulio, Muhammad Ali Bhatti, Aqeel Ahmed Shah, Umair Aftab, Anjum Zehra Naqvi, Nek Muhammad Shaikh, Ayman Nafady, Elmuez Dawi, Abd Al Karim Haj Ismail, Brigitte Vigolo, Zafar Hussain Ibupoto","doi":"10.1557/s43578-024-01420-7","DOIUrl":"https://doi.org/10.1557/s43578-024-01420-7","url":null,"abstract":"<p>A method is presented in this paper for treating NiCo<sub>2</sub>O<sub>4</sub> nanostructures with boric acid in an environmentally friendly and cost-effective manner. Boric acid was applied to chemically prepared NiCo<sub>2</sub>O<sub>4</sub> nanostructures for different periods of time, including 30, 60, and 120 min. A variety of analytical techniques were used to examine the morphology, crystallinity, functional groups, and optical band gaps of the crystals. This resulted in the development of an electrochemical non-enzymatic ascorbic acid sensor using NiCo<sub>2</sub>O<sub>4</sub> nanostructures treated with boric acid. After being infused with 0.5 M boric acid for 120 min, NiCo<sub>2</sub>O<sub>4</sub> nanostructures demonstrated excellent performance for oxidizing AA in a phosphate buffer solution of pH 7.4. There was a wide linear range for non-enzymatic detection between 0.1 and 20 mM. We determined a limit of detection of approximately 0.003 mM and a limit of quantification of approximately 0.008 mM.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"283 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-20DOI: 10.1557/s43578-024-01400-x
Bogna Sztorch, Julia Głowacka, Dariusz Brząkalski, Eliza Romanczuk-Ruszuk, Bogdan Marciniec, Robert E. Przekop
In recent years, there has been a growing research interest focused on employing organosilicon compounds, including silsesquioxanes, as modifiers for different polymers. This work describes the methodology for obtaining a new nanocomposite using functionalized spherosilicates, which belong to the general group of silsesquioxane compounds. These modifiers are used as additives to polylactide to improve its properties in the context of the additive technology fused deposition modeling/fuse fabrication filament. The developed materials were characterized by better rheology compared to neat PLA. Differential scanning calorimetry analysis of the additives confirmed their reactive nature. Based on water contact angle tests, it was observed that up to 1.5% of the load, none of the additives influenced the wetting of the material surface. Microscopic images revealed visible agglomerations for the OSS-6MA-2TMOS system, while in samples with a lower share of methacrylic groups, very good dispersion of the additive in the matrix was observed. Also, the microscopic observations showed better melting of the composite layers containing additives in the 3D printing process, combined with the appropriate printing parameters, can ultimately produce more robust objects with fewer voids and discontinuities. The addition also resulted in an increase in mechanical parameters, mainly in terms of bending strength and impact strength.
{"title":"High flexural modulus of polilactide composites for 3D printing technology using multifunctional octaspherosilicates","authors":"Bogna Sztorch, Julia Głowacka, Dariusz Brząkalski, Eliza Romanczuk-Ruszuk, Bogdan Marciniec, Robert E. Przekop","doi":"10.1557/s43578-024-01400-x","DOIUrl":"https://doi.org/10.1557/s43578-024-01400-x","url":null,"abstract":"<p>In recent years, there has been a growing research interest focused on employing organosilicon compounds, including silsesquioxanes, as modifiers for different polymers. This work describes the methodology for obtaining a new nanocomposite using functionalized spherosilicates, which belong to the general group of silsesquioxane compounds. These modifiers are used as additives to polylactide to improve its properties in the context of the additive technology fused deposition modeling/fuse fabrication filament. The developed materials were characterized by better rheology compared to neat PLA. Differential scanning calorimetry analysis of the additives confirmed their reactive nature. Based on water contact angle tests, it was observed that up to 1.5% of the load, none of the additives influenced the wetting of the material surface. Microscopic images revealed visible agglomerations for the OSS-6MA-2TMOS system, while in samples with a lower share of methacrylic groups, very good dispersion of the additive in the matrix was observed. Also, the microscopic observations showed better melting of the composite layers containing additives in the 3D printing process, combined with the appropriate printing parameters, can ultimately produce more robust objects with fewer voids and discontinuities. The addition also resulted in an increase in mechanical parameters, mainly in terms of bending strength and impact strength.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"39 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-16DOI: 10.1557/s43578-024-01412-7
Muhammad Aqib Busharat, Shazia Shukrullah, Mohamed M. Makhlouf
A sol–gel technique was used to synthesize MZnFe2O4 (M = Ni, Mg, Mn) spinel ferrite composites. The post-synthesis sintering of the nanocomposites was done at 700 °C for 5 h, followed by non-thermal microwave plasma treatment for 60 min. X-ray diffraction (XRD) analysis of the nanocomposites was conducted to comprehend the cation distribution of pristine and plasma-modified nanocomposites. XRD intensity of peaks for (220), (311), (400) and (440) planes were used to determine the cations distribution using intensity ratio method. The plasma-modified nanocomposites showed a decrease in the intensity ratio of XRD peaks and an increase in the size of the crystallites. The plasma-modified ZnNiFeO4 showed a photocatalytic activity of 95% against RhB dye, ZnMgFe2O4 showed photocatalytic activity of 87%, and ZnMnFe2O4 showed a photocatalytic activity of 90%. The key drivers of high dye degradation efficiency are surface functionalization, removal of oxides and reduced band gap of the plasma-modified nanocomposites.
{"title":"Investigating cation distribution and photocatalytic response of non-thermal plasma treated MZnFe2O4(M = Ni, Mg, Mn) nanocomposite ferrites","authors":"Muhammad Aqib Busharat, Shazia Shukrullah, Mohamed M. Makhlouf","doi":"10.1557/s43578-024-01412-7","DOIUrl":"https://doi.org/10.1557/s43578-024-01412-7","url":null,"abstract":"<p>A sol–gel technique was used to synthesize MZnFe<sub>2</sub>O<sub>4</sub> (M = Ni, Mg, Mn) spinel ferrite composites. The post-synthesis sintering of the nanocomposites was done at 700 °C for 5 h, followed by non-thermal microwave plasma treatment for 60 min. X-ray diffraction (XRD) analysis of the nanocomposites was conducted to comprehend the cation distribution of pristine and plasma-modified nanocomposites. XRD intensity of peaks for (220), (311), (400) and (440) planes were used to determine the cations distribution using intensity ratio method. The plasma-modified nanocomposites showed a decrease in the intensity ratio of XRD peaks and an increase in the size of the crystallites. The plasma-modified ZnNiFeO<sub>4</sub> showed a photocatalytic activity of 95% against RhB dye, ZnMgFe<sub>2</sub>O<sub>4</sub> showed photocatalytic activity of 87%, and ZnMnFe<sub>2</sub>O<sub>4</sub> showed a photocatalytic activity of 90%. The key drivers of high dye degradation efficiency are surface functionalization, removal of oxides and reduced band gap of the plasma-modified nanocomposites.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"181 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-16DOI: 10.1557/s43578-024-01417-2
Veerakumar Chinnasamy, Nayoung You, Honghyun Cho
Developing competent energy storage materials is crucial for efficient thermal energy storage and utilization. Microencapsulated lauryl alcohol as phase change material using SiO2 shell was prepared through a novel one-pot synthesis of interfacial polycondensation using tetraethyl orthosilicate as a shell precursor. The thermal properties were analyzed through differential scanning calorimetry, which revealed that the melting and freezing points of microcapsules were 23 °C and 18.9 °C, respectively. For melting and freezing, the estimated latent heats were 90 J g−1 and 88.2 J g−1, respectively. Thermogravimetric analysis confirms that the microcapsules are stable at a higher temperature. Besides, the leak test of the developed microcapsules was performed to investigate the stability during the melting process. Moreover, the prepared microcapsules (MPCM2) show stable and excellent thermophysical properties after 500 thermal cycles, which shows that the developed microcapsule is an ideal candidate for thermal energy storage.
{"title":"Development and thermophysical investigation of stable fatty alcohol/SiO2 phase change material microcapsules through interfacial polycondensation","authors":"Veerakumar Chinnasamy, Nayoung You, Honghyun Cho","doi":"10.1557/s43578-024-01417-2","DOIUrl":"https://doi.org/10.1557/s43578-024-01417-2","url":null,"abstract":"<p>Developing competent energy storage materials is crucial for efficient thermal energy storage and utilization. Microencapsulated lauryl alcohol as phase change material using SiO<sub>2</sub> shell was prepared through a novel one-pot synthesis of interfacial polycondensation using tetraethyl orthosilicate as a shell precursor. The thermal properties were analyzed through differential scanning calorimetry, which revealed that the melting and freezing points of microcapsules were 23 °C and 18.9 °C, respectively. For melting and freezing, the estimated latent heats were 90 J g<sup>−1</sup> and 88.2 J g<sup>−1</sup>, respectively. Thermogravimetric analysis confirms that the microcapsules are stable at a higher temperature. Besides, the leak test of the developed microcapsules was performed to investigate the stability during the melting process. Moreover, the prepared microcapsules (MPCM2) show stable and excellent thermophysical properties after 500 thermal cycles, which shows that the developed microcapsule is an ideal candidate for thermal energy storage.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"34 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-16DOI: 10.1557/s43578-024-01410-9
Latifah Hamad Khalid Alfhaid, A. F. Qasrawi, Amjad Salamah M. Aljaloud
Herein, thin films of Nb2O5 are deposited onto semitransparent indium and glass substrates using the sputtering technique. Optical analyses revealed significant improvement in light absorption, displaying a maximum enhancement of 1900% at an incident photon energy of 2.29 eV. The dielectric constant of Nb2O5 is increased by 289% after coating onto indium substrates. In addition it increased the values of terahertz cutoff frequency making the In/Nb2O5 interfaces promising for use as optical band filters adequate for terahertz technology. On the other hand the experimentally designed In/Nb2O5/Ag antennas were tested in the frequency domain of 0.01–1.80 GHz. The antennas exhibited excellent performance across the quad-band range. The four lower bandstop edges of the AC transmission line are centered at 0.67 GHz, 1.19 GHz, 1.42 GHz, and 1.65 GHz. Additionally, the MIM antenna demonstrated a negative capacitance effect beneficial for canceling passive antenna modes, thereby resulting in high transmission rates with minimal power loss.
{"title":"In/Nb2O5 interfaces designed as enhanced broadband light absorbers, terahertz optical filters and quad band antennas","authors":"Latifah Hamad Khalid Alfhaid, A. F. Qasrawi, Amjad Salamah M. Aljaloud","doi":"10.1557/s43578-024-01410-9","DOIUrl":"https://doi.org/10.1557/s43578-024-01410-9","url":null,"abstract":"<p>Herein, thin films of Nb2O5 are deposited onto semitransparent indium and glass substrates using the sputtering technique. Optical analyses revealed significant improvement in light absorption, displaying a maximum enhancement of 1900% at an incident photon energy of 2.29 eV. The dielectric constant of Nb<sub>2</sub>O<sub>5</sub> is increased by 289% after coating onto indium substrates. In addition it increased the values of terahertz cutoff frequency making the In/Nb<sub>2</sub>O<sub>5</sub> interfaces promising for use as optical band filters adequate for terahertz technology. On the other hand the experimentally designed In/Nb<sub>2</sub>O<sub>5</sub>/Ag antennas were tested in the frequency domain of 0.01–1.80 GHz. The antennas exhibited excellent performance across the quad-band range. The four lower bandstop edges of the AC transmission line are centered at 0.67 GHz, 1.19 GHz, 1.42 GHz, and 1.65 GHz. Additionally, the MIM antenna demonstrated a negative capacitance effect beneficial for canceling passive antenna modes, thereby resulting in high transmission rates with minimal power loss.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"4 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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