Diamond and Related Materials最新文献_第5页

Rational design of Ag-CuFe2O4/rGO heterojunction nanocomposite for efficient organic azo-dye degradation and mechanistic pathways toward Environmental Remediation Ag-CuFe2O4/氧化石墨烯异质结纳米复合材料的合理设计及其对有机偶氮染料的高效降解和环境修复的机理途径

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-31 DOI: 10.1016/j.diamond.2026.113386

Sorapong Pavasupree , Paramasivam Shanmugam , Ranjith Rajendran , Lalitha Gnanasekaran , Supakorn Boonyuen , Thammasak Rojviroon , Orawan Rojviroon

The fashion industry today utilizes a wide variety of dyes, raising global concerns about their toxicity, carcinogenic properties, and potential for bioaccumulation. In light of these issues, researchers are increasingly focusing on a diverse range of photocatalysts for the effective remediation of dyes. In this research, the synthesis of Ag-CuFe₂O₄/rGO nanocomposites is achieved through a hydrothermal method followed by an ultrasonication method. Various analytical techniques were used to analyze the prepared samples, such as XRD, FTIR, SEM, EDS, elemental mapping, HRTEM, and UV–Vis analyses. Results indicated successful decoration of silver nanoparticles (Ag NPs) and CuFe₂O₄ on 2D reduced graphene oxide (rGO) nanosheets. The fabricated interfacial binary heterostructure demonstrated effective photocatalytic capabilities for the remedy of mixed dye pollutants when exposed to UV–visible light. Factors such as a broad range of light absorption, efficient charge separation, and swift charge transport enhanced the photocatalytic performance of these heterostructures. The optimized Ag-CuFe₂O₄/rGO nanocomposites achieved impressive degradation efficiencies of 96.27%, 97.27%, and 93.73% for Methylene blue (MB) and Rhodamine B, and MB and RhB mixed dyes, respectively. Additionally, the study explored the tentative photocatalytic mechanism, conducted scavenger experiments, and assessed the recyclability and stability of the nanocomposites. These findings highlighted that hydroxyl radical (^•OH) species significantly contribute to the photocatalytic degradation process under UV–visible light illumination. Overall, Ag-CuFe₂O₄/rGO nanocomposites demonstrate strong potential for efficiently degrading organic azo-dyes in industrial wastewater and promoting environmental cleanup.

如今，时尚行业使用了各种各样的染料，引起了全球对其毒性、致癌性和潜在生物积累的关注。鉴于这些问题，研究人员越来越关注各种光催化剂对染料的有效修复。本研究采用水热法制备Ag-CuFe2O4/还原氧化石墨烯纳米复合材料，然后采用超声法制备。采用XRD、FTIR、SEM、EDS、元素映射、HRTEM、UV-Vis等分析技术对制备的样品进行分析。结果表明，银纳米粒子（Ag NPs）和CuFe2O4成功修饰在二维还原氧化石墨烯（rGO）纳米片上。所制备的界面二元异质结构在紫外-可见光照射下对混合染料污染物表现出有效的光催化活性。广泛的光吸收、高效的电荷分离和快速的电荷传输等因素增强了这些异质结构的光催化性能。优化后的Ag-CuFe2O4/rGO纳米复合材料对亚甲基蓝（MB）和罗丹明B、MB和RhB混合染料的降解效率分别为96.27%、97.27%和93.73%。此外，本研究还初步探讨了光催化机理，进行了清除剂实验，并评估了纳米复合材料的可回收性和稳定性。这些发现表明，在紫外-可见光照射下，羟基自由基（•OH）对光催化降解过程有重要作用。总之，Ag-CuFe2O4/还原氧化石墨烯纳米复合材料在有效降解工业废水中的有机偶氮染料和促进环境净化方面具有强大的潜力。

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引用次数: 0

Detection of Escherichia coli using GMR integrated with L-histidine-linked Fe3O4/rGO magnetic nanoparticles 结合l -组氨酸连接Fe3O4/rGO磁性纳米颗粒的GMR检测大肠杆菌

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-31 DOI: 10.1016/j.diamond.2026.113376

Layyinatus Shifa , Zurnansyah , Emi Kurnia Sari , Nurul Imani Istiqomah , Mercuryta Dewi Noviastuti , Nugraheni Puspita Rini , Julia Angel , Tri Marji Atmono , Kohji Nakamura , Edi Suharyadi

Escherichia coli (E. coli) has been successfully detected using a giant magnetoresistance (GMR) chip as a transducer, employed with Fe₃O₄ and Fe₃O₄/reduced graphene oxide (rGO) nanoparticles as magnetic nanotag labels and L-Histidine (L-His) as a linker. The E. coli concentration was varied to investigate how different levels of E. coli affect the voltage signal generated by the GMR sensor. The nanoparticles were fabricated through a hybrid approach that employs a green synthesis method using plant extracts. The nanoparticles exhibit superparamagnetic behavior, which influences the detection quality of the labels. The result shows that the higher E. coli concentration results in a more substantial increase in the voltage signal. For the Fe₃O₄/rGO-His label, the voltage is 0.075, 0.131, and 0.173 V for E. coli variations of 1:1000, 1:100, and 1:10, respectively. The signal for Fe₃O₄/rGO-His label is more significant than that of Fe₃O₄-His due to the contribution of rGO which increases the binding of L-His and E. coli. Moreover, the result of the relative standard deviation shows an increase from 0.26% to 6.1% for Fe₃O₄-His and from 0.69% to 5.1% for Fe₃O₄/rGO-His, indicating an acceptable level of reproducibility in the sensor's detection.

利用巨磁电阻（GMR）芯片作为传感器，以Fe3O4和Fe3O4/还原氧化石墨烯（rGO）纳米颗粒作为磁性纳米标签，l -组氨酸（L-His）作为连接剂，成功检测出大肠杆菌（E. coli）。改变大肠杆菌浓度，研究不同水平的大肠杆菌如何影响GMR传感器产生的电压信号。纳米颗粒是通过混合方法制造的，该方法采用绿色合成方法，使用植物提取物。纳米粒子表现出超顺磁性，影响了标记的检测质量。结果表明，大肠杆菌浓度越高，电压信号的增加幅度越大。对于Fe3O4/rGO-His标签，大肠杆菌1:1000、1:100和1:10变化的电压分别为0.075、0.131和0.173 V。Fe3O4/rGO- his标记的信号比Fe3O4- his的信号更显著，这是由于rGO的贡献，它增加了L-His与大肠杆菌的结合。此外，相对标准偏差的结果显示，Fe3O4- his从0.26%增加到6.1%，Fe3O4/rGO-His从0.69%增加到5.1%，表明传感器检测的再现性水平可接受。

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引用次数: 0

Design and synthesis of a PtNPs@GQDs nanocomposites and its anticancer effects on colorectal cancer PtNPs@GQDs纳米复合材料的设计与合成及其对结直肠癌的抗癌作用

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-31 DOI: 10.1016/j.diamond.2026.113389

HuiLong Xie , YongQin Wei , JiaNi Xiong , ChengYan Wang , GuoCong Guo , JieMing Xie

Platinum-based chemotherapy for colorectal cancer is limited by severe nephrotoxicity and drug resistance. To address this, we synthesized a novel platinum nanoparticle-graphene quantum dot nanostructure (PtNPs@GQDs), characterized by excellent water solubility, stability, and high catalytic/reductive activity. In vitro, PtNPs@GQDs demonstrated potent growth inhibition of colon cancer cells at low platinum concentrations (<1.6 μg Pt/mL) and significantly induced apoptosis. In vivo, PtNPs@GQDs (8.2 and 12.4 mg Pt/kg) markedly suppressed tumor growth in HT-29 xenograft mice. These findings highlight PtNPs@GQDs as a promising new chemotherapeutic agent for colorectal cancer.

以铂为基础的结直肠癌化疗由于严重的肾毒性和耐药性而受到限制。为了解决这个问题，我们合成了一种新型的铂纳米粒子-石墨烯量子点纳米结构（PtNPs@GQDs），具有优异的水溶性，稳定性和高催化/还原活性。在体外，PtNPs@GQDs在低铂浓度（<1.6 μg Pt/mL）下对结肠癌细胞有明显的生长抑制作用，并显著诱导细胞凋亡。在体内，PtNPs@GQDs（8.2和12.4 mg Pt/kg）显著抑制HT-29异种移植小鼠的肿瘤生长。这些发现突出了PtNPs@GQDs作为一种有前景的结直肠癌新化疗药物。

引用次数: 0

Bio-graphene oxide materials from biomass: A green, one-step synthesis via low-temperature combustion 来自生物质的生物氧化石墨烯材料：通过低温燃烧的绿色一步合成

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-31 DOI: 10.1016/j.diamond.2026.113388

Filiz BORAN , Ömer ÇAVUŞ , Erol ALVER , Merve OKUTAN

This study presents the conversion of agricultural biomass wastes into value-added graphene-derived materials, contributing to the principles of the circular economy. Locally available agricultural wastes such as rice husks, sunflower stalks, corn cobs, and spent coffee grounds were upcycled into bio-graphene oxide materials using a simple, single-step, low-temperature synthesis with ferrocene as a catalyst. The effects of combustion temperature, time, and catalyst ratio were systematically optimized to enhance product quality. Characterization of the synthesized materials was performed using XRD, Raman spectroscopy, SEM-EDX, elemental mapping, TEM, BET surface area, XPS, and ICP-OES analyses. The optimum synthesis conditions were determined as 350 °C for 15 min with a 1:2 catalyst/biomass ratio for rice husk and 400 °C for 15 min with a 1:5 ratio for the other samples. ICP-OES analysis confirmed high purities ranging from 95.55% to 98.99%. Structural characterization revealed the formation of hexagonal frameworks and layered graphene oxide/graphene structures, demonstrating that the applied approach enables an efficient and sustainable route for producing bio-graphene oxide from agricultural residues.

本研究介绍了将农业生物质废弃物转化为增值石墨烯衍生材料，为循环经济原则做出贡献。当地可利用的农业废弃物，如稻壳、向日葵茎、玉米芯和废咖啡渣，在二茂铁作为催化剂的情况下，通过简单的单步低温合成，被升级为生物氧化石墨烯材料。系统优化了燃烧温度、时间和催化剂配比对产品质量的影响。利用XRD、拉曼光谱、SEM-EDX、元素映射、TEM、BET表面积、XPS和ICP-OES分析对合成材料进行了表征。最佳合成条件为稻壳350°C反应15 min，催化剂/生物质比为1:2；其他样品400°C反应15 min，催化剂/生物质比为1:5。ICP-OES分析证实纯度为95.55% ~ 98.99%。结构表征揭示了六边形框架和层状氧化石墨烯/石墨烯结构的形成，表明该应用方法为从农业残留物中生产生物氧化石墨烯提供了有效和可持续的途径。

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引用次数: 0

Efficient machining method for multi-sheet single-crystal diamond based on self-rotation grinding motion trajectory 基于自旋磨削运动轨迹的多片单晶金刚石高效加工方法

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-30 DOI: 10.1016/j.diamond.2026.113384

Yongkang Xin , Jing Lu , Yikun Hu , Shaofeng Huang , Qiufa Luo , Congming Ke , Xipeng Xu

Diamond has emerged as an ideal substrate material for next-generation high-power semiconductor devices due to its exceptional electronic properties. While self-rotating grinding technology demonstrates high-efficiency material removal, its application is hindered by trajectory aggregation effects, which degrade surface accuracy. This study addresses this bottleneck by establishing a grinding trajectory density distribution model to systematically analyze the influence of workpiece placement (position, angle) and substrate size on trajectory uniformity. Combined with experimental investigations into diamond anisotropic removal characteristics, multi-parameter optimization enabled synchronous processing of five (100) orientation diamond substrates. The results indicate an average material removal rate of 1.75 μm/h, with a surface roughness of Sa < 0.5 nm and a surface flatness of PV < 8 nm. This achievement successfully meets the dual objectives of high quality and high efficiency.

金刚石由于其优异的电子性能，已成为下一代大功率半导体器件的理想基板材料。虽然自旋磨削技术具有高效的材料去除效果，但其应用受到轨迹聚集效应的阻碍，从而降低了表面精度。本文通过建立磨削轨迹密度分布模型，系统分析工件放置（位置、角度）和基体尺寸对轨迹均匀性的影响，解决了这一瓶颈问题。结合对金刚石各向异性去除特性的实验研究，多参数优化实现了五（100）取向金刚石基板的同步加工。结果表明，材料的平均去除率为1.75 μm/h，表面粗糙度为Sa <； 0.5 nm，表面平整度为PV <； 8 nm。这一成果成功地实现了高质量和高效率的双重目标。

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引用次数: 0

Synergistic photoelectrochemical polishing of polycrystalline diamond for high-efficiency atomic-level finishing 聚晶金刚石的协同光电抛光，实现高效原子级精加工

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-29 DOI: 10.1016/j.diamond.2026.113381

Qingjie Zheng, Jiaxin Yu, Liwei Ou, Tao He, Xianwen Zheng

Polycrystalline diamond (PCD), known for its exceptional thermal conductivity, is an ideal material for heat dissipation in semiconductor devices. However, its extreme hardness and chemical inertness pose significant challenges in achieving high efficiency and superior surface quality. To address this, this study introduces an innovative approach: Ultraviolet-assisted Photoelectrochemical Chemical Mechanical Polishing (UV-PECMP) using boron-doped diamond (BDD). Under UV illumination, the BDD electrode generates a synergistic effect, enabling continuous and efficient production of high-concentration hydroxyl radicals. These radicals induce uniform and effective chemical oxidation on the PCD surface, which complements mechanical abrasion to facilitate material removal. The feasibility of this method is systematically evaluated through hydroxyl radical trapping tests, oxidation experiments, and polishing trials. Experimental results confirm that the proposed technique enables stable and efficient generation of ·OH, leading to effective surface oxidation of PCD. Combined with mechanical action, this method achieves an ultra-smooth surface with roughness values as low as Sa = 1.43 nm, Sz = 40.35 nm, and a high material removal rate (MRR = 690.8 nm/h). This work demonstrates the feasibility of the proposed method and provides a novel solution for ultra-precision machining of diamond materials.

聚晶金刚石（PCD）以其优异的导热性而闻名，是半导体器件中理想的散热材料。然而，其极高的硬度和化学惰性给实现高效率和高表面质量带来了重大挑战。为了解决这个问题，本研究引入了一种创新的方法：使用掺硼金刚石（BDD）进行紫外辅助光电化学机械抛光（UV-PECMP）。在紫外线照射下，BDD电极产生协同效应，使高浓度羟基自由基能够持续有效地产生。这些自由基在PCD表面诱导均匀有效的化学氧化，补充了机械磨损，促进了材料的去除。通过羟基自由基捕获试验、氧化实验和抛光试验，系统地评价了该方法的可行性。实验结果证实，该技术能够稳定高效地生成·OH，从而有效地氧化PCD表面。结合机械作用，该方法获得了超光滑表面，粗糙度值低至Sa = 1.43 nm, Sz = 40.35 nm，材料去除率高（MRR = 690.8 nm/h）。这一工作证明了该方法的可行性，为金刚石材料的超精密加工提供了一种新的解决方案。

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引用次数: 0

Influence of sliding angle on friction reduction of surface-textured amorphous carbon films and its relationship with textured shape 滑动角对表面织构非晶碳膜摩擦减量的影响及其与织构形状的关系

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-29 DOI: 10.1016/j.diamond.2026.113373

Xiang Lu , Naizhou Du , Xiaowei Li , Xubing Wei , Jiahao Dong , Junjie Lu , Kai Chen , Hao Li , Chengyuan Liu , Aiping Lin , Wei Liu

The combination of surface texturing technology and amorphous carbon (a-C) solid lubricating films has garnered significant attention due to their potential to enhance friction performance across various environments. However, the effect of sliding angles on the friction reduction of textured a-C films remains insufficiently studied. Particularly, the current experimental characterization techniques are still constrained in in-situ monitoring of interfacial physicochemical interactions and microstructural evolution during friction processes, resulting in incomplete elucidation of the underlying mechanisms. Herein, using reactive molecular dynamics simulations, the role of sliding angle in friction reduction of surface circular-textured a-C films was systematically investigated, and its dependence on textured shape was also considered by comparing with the rectangular-textured case. Results indicate that the tribological performance is highly dependent on the sliding angle. The friction coefficient exhibits an initial decrease followed by an increase with increasing sliding angle from 0° to 90°, with the optimal frictional behavior observed at a sliding angle of 60°. This performance is primarily governed by the combined effects of interfacial crosslinking and passivation degrees. Furthermore, the a-C films with different textured shapes exhibit a similar trend in friction behavior with respect to sliding angle. But the differences in friction response between the two geometries are predominantly governed by alternating contributions from interfacial crosslinking and the reduction of unsaturated bonds. These results elucidate the friction-reduction mechanisms of surface-textured a-C films under varying sliding angles, providing theoretical guidance for texture design optimization and operational parameter selection in engineering applications.

表面织构技术和非晶碳（a-C）固体润滑膜的结合由于其在各种环境下提高摩擦性能的潜力而引起了极大的关注。然而，滑动角对织构a-C薄膜摩擦减量的影响研究尚不充分。特别是，目前的实验表征技术仍然局限于对摩擦过程中界面物理化学相互作用和微观结构演变的原位监测，导致对潜在机制的不完全阐明。本文采用反应分子动力学模拟的方法，系统研究了滑动角对表面圆形织构a-C膜摩擦减量的影响，并通过与矩形织构的对比，考虑了滑动角对表面圆形织构a-C膜摩擦减量的依赖关系。结果表明，摩擦磨损性能与滑动角密切相关。从0°到90°，随着滑动角的增大，摩擦系数呈现先减小后增大的趋势，在60°滑动角时摩擦性能最佳。这种性能主要受界面交联和钝化程度的综合影响。此外，不同织构形状的a- c薄膜的摩擦行为随滑动角的变化趋势相似。但两种几何结构之间的摩擦响应差异主要是由界面交联和不饱和键的减少交替贡献决定的。这些结果阐明了不同滑动角下表面织构a-C膜的减摩机理，为工程应用中织构优化设计和操作参数选择提供了理论指导。

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引用次数: 0

Enhanced electrochemical performance and internal resistance dynamics of Zn-MOF-74/rGO composite cathode for aqueous zinc-ion batteries 锌- mof -74/氧化石墨烯复合阴极的电化学性能和内阻动力学研究

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-29 DOI: 10.1016/j.diamond.2026.113380

Abdulhadi H. Al-Marri

The development of high-performance aqueous zinc-ion batteries (AZIBs) requires cathode materials capable of combining fast Zn²⁺ transport, high electronic conductivity, and long-term structural stability. In this work, we report a Zn-MOF-74/rGO composite synthesized through a facile in-situ hydrothermal route, in which reduced graphene oxide (rGO) forms a conductive and mechanically robust framework within the MOF matrix. Structural analyses confirm that the incorporation of rGO preserves the crystalline integrity of the MOF-74 framework while significantly improving its textural properties and thermal stability. The resulting hybrid exhibits a high specific surface area (≈950 m² g⁻¹) and a hierarchical porous network that facilitates rapid Zn²⁺ diffusion. Electrochemical measurements reveal a remarkable enhancement in charge-storage performance: the composite delivers 291 mAh g⁻¹, superior rate capability, and excellent cycling stability with 94% capacity retention after 1000 cycles at 2.0 A g⁻¹. Dynamic charge internal resistance (DCIR) analysis further demonstrates reduced polarization and improved interfacial kinetics, confirming the key role of rGO in lowering internal resistance under various operating conditions. The synergistic interplay between the MOF-74 framework and the rGO network enables fast electrochemical kinetics, enhanced electronic pathways, and robust structural durability. This study provides new insights into DCIR evolution in MOF-based electrodes and highlights a promising strategy for designing next-generation high-power AZIBs.

高性能水性锌离子电池（azib）的发展需要能够结合Zn2+快速输运、高电子导电性和长期结构稳定性的正极材料。在这项工作中，我们报道了一种通过简单的原位水热方法合成的Zn-MOF-74/rGO复合材料，其中还原的氧化石墨烯（rGO）在MOF基体内形成导电且机械坚固的框架。结构分析证实，rGO的加入保留了MOF-74框架的结晶完整性，同时显著改善了其结构性能和热稳定性。所得到的杂化材料具有高比表面积（≈950 m2 g−1）和分层多孔网络，有利于Zn2+的快速扩散。电化学测量显示电荷存储性能显著增强：复合材料提供291 mAh g - 1，优越的倍率能力和出色的循环稳定性，在2.0 ag - 1下循环1000次后容量保持94%。动态电荷内阻（DCIR）分析进一步证明了极化降低和界面动力学改善，证实了还原氧化石墨烯在各种操作条件下降低内阻的关键作用。MOF-74框架和氧化石墨烯网络之间的协同相互作用可以实现快速的电化学动力学，增强的电子路径和坚固的结构耐久性。该研究为mof电极的DCIR演变提供了新的见解，并强调了设计下一代高功率azib的有前途的策略。

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引用次数: 0

Three-dimensional sp2-carbon allotropes with narrow electronic bandgaps and high carrier mobility 具有窄电子带隙和高载流子迁移率的三维sp2-碳同素异形体

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-29 DOI: 10.1016/j.diamond.2026.113379

Yuan Tang , Wenyuan Zhang , Xiao Wang , Shuai Chen , Lu Shi , Julong He , Meng Hu

Carbon materials with narrow electronic band gaps exhibit great potential for flexible electronics and photodetection owing to their excellent carrier transport properties, tunable electronic structures, and outstanding thermal stability. However, both experimentally and theoretically accessible carbons with narrow band gaps are largely restricted to low-dimensional forms. The theoretical prediction of three-dimensional (3D) carbon allotropes that combine distinctive topologies and outstanding electronic properties remains a challenge. In this work, we employed a state-of-the-art structure-prediction approach to construct and screen two novel 3D all-sp² 3D carbon allotropes, T-C₁₆ and O-C₂₄. Their structural, mechanical, electronic, and optical properties were systematically investigated using first-principles calculations, and the modulation of their electronic characteristics under uniaxial strain was further analyzed. T-C₁₆ and O-C₂₄ are narrow band gap semiconductors with gap values of 0.02 eV and 0.27 eV, respectively. Notably, their band gaps can be tuned continuously under uniaxial strain, eventually reaching a metallic state. In addition, their extremely low effective masses, high room-temperature electron mobilities comparable to that of black phosphorene, and strong ultraviolet absorption indicate these carbons hold substantial promise for applications in flexible electronics, strain-engineered devices, and advanced photodetection.

具有窄电子带隙的碳材料由于其优异的载流子输运特性、可调谐的电子结构和出色的热稳定性，在柔性电子和光探测方面表现出巨大的潜力。然而，在实验和理论上，具有窄带隙的可接近的碳在很大程度上局限于低维形式。结合独特的拓扑结构和杰出的电子特性的三维（3D）碳同素异形体的理论预测仍然是一个挑战。在这项工作中，我们采用了最先进的结构预测方法来构建和筛选两个新的3D全sp2 3D碳同素异形体T-C16和O-C24。利用第一性原理计算系统地研究了它们的结构、力学、电子和光学性质，并进一步分析了它们的电子特性在单轴应变下的调制。T-C16和O-C24是窄带隙半导体，隙值分别为0.02 eV和0.27 eV。值得注意的是，它们的带隙可以在单轴应变下连续调谐，最终达到金属状态。此外，它们极低的有效质量、与黑磷烯相当的高室温电子迁移率以及强紫外吸收表明，这些碳在柔性电子、应变工程设备和先进的光探测方面具有巨大的应用前景。

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引用次数: 0

Sustainable fabrication of hard carbon from longan seeds: Role of thermal treatment in tuning sodium-ion storage behavior 龙眼种子可持续制备硬碳：热处理在调节钠离子储存行为中的作用

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-28 DOI: 10.1016/j.diamond.2026.113377

Dongsheng Li , Jiajia Li , Chun Li , Yuju Zhao , Chao Ma , Yanting Hu , Xu Feng , Junqiang Niu , Shanshan Yao

Owing to the elemental abundance and cost-effectiveness of sodium, sodium-ion batteries (SIBs) have emerged as an attractive candidate for large-scale energy storage systems. However, the fabrication of high-performance anode materials remains a critical challenge. Among various options, biomass-derived hard carbon has gained significant research interest due to its environmental friendliness, renewability, and tunable microstructure. Herein, the present research focuses on longan seeds-derived hard carbon (LSHC), specifically studying the correlation between its pyrolysis temperature and the microstructure and electrochemical performance. The data indicate that elevating the thermal treatment temperature led to a higher degree of graphitization (structural order) in HC, accompanied by a decline in surface defects and a growth in closed pore volume. A lower defect density led to the suppression of the solid electrolyte interphase (SEI) film formation, while a greater volume of closed pores was responsible for improving the capacity in the plateau region. Moreover, the correlation between pore structure regulation, ion transport dynamics, and electrochemical properties was systematically studied. Longan seeds-derived HC prepared at 1300 °C exhibits a remarkable reversible specific capacity of 287.4 mAh g⁻¹, and demonstrates outstanding cycling stability with 82.1% capacity retention (236 mAh g⁻¹) after 500 cycles at 2C. Even at a higher current density, the HC exhibits specific discharge capacity of 208 mAh g⁻¹ at 4C. This work supports regulating the microstructure for biomass-derived hard carbon for tuning sodium ion storage behaviors, which contributes to the sustainable development of biomass resources.

由于钠的元素丰度和成本效益，钠离子电池（SIBs）已成为大规模储能系统的一个有吸引力的候选者。然而，高性能阳极材料的制造仍然是一个关键的挑战。在各种选择中，生物质衍生的硬碳由于其环境友好性，可再生性和可调节的微观结构而获得了重要的研究兴趣。本文以龙眼籽衍生硬碳（LSHC）为研究对象，研究其热解温度与微观结构和电化学性能的关系。结果表明，热处理温度的升高使HC的石墨化程度（结构有序度）提高，表面缺陷减少，闭孔体积增大。较低的缺陷密度抑制了固体电解质间相（SEI）膜的形成，而较大体积的封闭孔隙则提高了高原区域的容量。此外，还系统地研究了孔隙结构调节、离子传递动力学和电化学性能之间的关系。在1300°C下制备的龙眼种子衍生的HC具有287.4 mAh g−1的可逆比容量，并且在2C下循环500次后具有82.1%的容量保持率（236 mAh g−1）。即使在更高的电流密度下，HC在4C时也显示出208 mAh g−1的比放电容量。本研究支持通过调控生物质源硬碳的微观结构来调控钠离子的储存行为，从而促进生物质资源的可持续发展。

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引用次数: 0