Diamond and Related Materials最新文献_第8页

Green manufacturing of rGO-reinforced Cu-based MMCs with optimized properties through microwave hybrid heating process 微波混合加热工艺制备性能优化的氧化石墨烯增强cu基复合材料

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-04 DOI: 10.1016/j.diamond.2025.112516

Khalid Bashir , Rajat Kumar , Dheeraj Gupta , Vivek Jain , Sandeep Bansal

{"title":"Green manufacturing of rGO-reinforced Cu-based MMCs with optimized properties through microwave hybrid heating process","authors":"Khalid Bashir , Rajat Kumar , Dheeraj Gupta , Vivek Jain , Sandeep Bansal","doi":"10.1016/j.diamond.2025.112516","DOIUrl":"10.1016/j.diamond.2025.112516","url":null,"abstract":"<div><div>This research work used a unique microwave hybrid heating (MHH) approach to Cu-based rGO metal matrix compsoites (MMC) composites. A 2.45 GHz domestic microwave, with a maximum power level of 900 W, was utilized to melt copper powder reinforced with different proportions of reduced graphene oxide (rGO) ranging from 0.5 % to 1.5 % by weight fraction. Following this, the thermal, mechanical, and metallurgical characteristics of the composite samples were examined. The average size of the raw powder particles utilized for the casting process was approximately 30 μm for copper powder and 69.8 nm for reduced graphene oxide (rGO) powder. The processing time of Cu-based rGO decreases with an increase in reinforcement material. On the developed composite casts, a variety of characterization methods were used, including Vickers' microhardness testing, porosity, density, electrical and thermal conductivity, X-ray diffraction (XRD), and scanning electron microscopy (SEM). When compared to pure Cu, the test results showed a significant increase in hardness and thermal conductivity. In rGO-based samples, the microstructural analysis showed a uniform reinforcement distribution with finely recrystallized grains that resembled polycrystalline structures and a hexagonal solidification pattern with pure Cu. The porosity decreased from 1.09 % in pure copper to 0.79 % with the addition of 1.5 % rGO, though relative density dropped due to rGO's lower density. Thermal conductivity increased to 450 W/m.K, about 2.34 times higher than pure Cu. Vickers microhardness improved to 145.75 HV, a 2.35 times increase over pure Cu (61.7 HV).</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112516"},"PeriodicalIF":4.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242411","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

Interlocking reinforced graphitic material based on nanodiamond-derived nano-onion-helical carbon nanotube anchored structure 基于纳米金刚石衍生纳米洋葱-螺旋碳纳米管锚定结构的互锁增强石墨材料

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-03 DOI: 10.1016/j.diamond.2025.112518

Qian Zhang , Jianxiong Fang , Wanru Ma , Ao Li , Qipeng Liu , Renkai Chang , Qisong Li , Shaopei Jia , Bing Liu , Yang Zhang , Yunchao Mu , Quan Huang

{"title":"Interlocking reinforced graphitic material based on nanodiamond-derived nano-onion-helical carbon nanotube anchored structure","authors":"Qian Zhang , Jianxiong Fang , Wanru Ma , Ao Li , Qipeng Liu , Renkai Chang , Qisong Li , Shaopei Jia , Bing Liu , Yang Zhang , Yunchao Mu , Quan Huang","doi":"10.1016/j.diamond.2025.112518","DOIUrl":"10.1016/j.diamond.2025.112518","url":null,"abstract":"<div><div>In this study, high-strength graphitic materials (HSGs) were successfully achieved using nanodiamonds (NDs) and helical carbon nanotubes (HCNTs) as precursors in combination with spark plasma sintering. In the sintered graphite-like block, nano-onion carbon, transformed from the high-temperature phase of NDs, distributes around the HCNTs supporting skeleton, to form an anchoring structure. The distinctive helical geometry of the carbon nanotubes effectively alleviates the internal residual stresses resulting from the volume expansion during the graphitization of NDs. Moreover, this elaborate anchoring microstructure enables the samples to withstand external forces, and the interactions among various components of the samples synergistically enhance the overall mechanical properties of the HSGs. The sample exhibits optimum performance when the content of HCNTs reaches 15 wt%. Specifically, HSG-15 exhibits nanoindentation hardness, Young's modulus, flexural strength, and compressive strength values of 2.89 GPa, 24.8 GPa, 73.6 MPa, and 445 MPa, respectively. These performance data far exceed those of commercial isotropic graphite materials, vividly demonstrating the effectiveness of the proposed preparation approach and highlighting the substantial potential of HSG-15 for applications demanding high-performance graphite.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112518"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222490","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

Effect of carbon nanotube content on the microstructure and properties of WC/ Co-based alloy by laser cladding 碳纳米管含量对激光熔覆WC/ co基合金组织和性能的影响

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-03 DOI: 10.1016/j.diamond.2025.112520

Haoqiang Zhang, Hongyuan Liu, Yin Liu, Suoxia Hou, Zhanshan Ma

{"title":"Effect of carbon nanotube content on the microstructure and properties of WC/ Co-based alloy by laser cladding","authors":"Haoqiang Zhang, Hongyuan Liu, Yin Liu, Suoxia Hou, Zhanshan Ma","doi":"10.1016/j.diamond.2025.112520","DOIUrl":"10.1016/j.diamond.2025.112520","url":null,"abstract":"<div><div>Carbon nanotubes (CNTs) have long been considered as ideal materials for reinforcing ceramic and metal matrix composite coatings. To improve the mechanical properties of WC/ Co-based coatings, a laser cladding method was employed to prepare CNTs-reinforced Co-based tungsten carbide (WC) composite coatings. The effect of CNTs content is investigated and compared to that of a CNTs-free composite sample. The results show that: the main phase composition of the composite coating is M<sub>23</sub>C<sub>6</sub>, M<sub>7</sub>C<sub>3</sub>, Cr<sub>2</sub>Fe<sub>14</sub>C, W<sub>2</sub>C and M<sub>12</sub>C. The grain refinement effect of the coating with carbon nanotubes is obvious, and the average grain size is much reduced compared to the coating without carbon nanotubes. The microhardness and wear resistance of the coating increase first and then decrease with the increase of CNTs content. When the CNTs content is 1 wt%, the average hardness of the coating reaches 507 HV<sub>0.2</sub> and the average friction coefficient decreases to 0.32. The corrosion resistance of the coating increases first and then decreases with the increase of CNTs. When the CNTs content is 1 wt%, the coating has the highest corrosion potential (E<sub>corr</sub>) of −0.271 V, the lowest corrosion current density (I<sub>corr</sub>) of 4.603 × 10<sup>−8</sup> A·cm<sup>−2</sup>, and the best corrosion resistance.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112520"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212898","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

Nitrogen-doped carbon/NiCo₂S₄ aerogel nanocomposite for solid-state supercapacitors 固态超级电容器用氮掺杂碳/NiCo₂S₄气凝胶纳米复合材料

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-03 DOI: 10.1016/j.diamond.2025.112517

Le Hong Quan , Nguyen Cong Minh , Tran Ngoc Le , Nguyen Huu Nghia , Tran Quang Ngoc , Nguyen Van Tang , Bui Thuc Minh , Nguyen Van Hoa

{"title":"Nitrogen-doped carbon/NiCo₂S₄ aerogel nanocomposite for solid-state supercapacitors","authors":"Le Hong Quan , Nguyen Cong Minh , Tran Ngoc Le , Nguyen Huu Nghia , Tran Quang Ngoc , Nguyen Van Tang , Bui Thuc Minh , Nguyen Van Hoa","doi":"10.1016/j.diamond.2025.112517","DOIUrl":"10.1016/j.diamond.2025.112517","url":null,"abstract":"<div><div>The conversion of biomass into valuable carbon materials reduces environmental pollution and develops effective porous carbon electrodes for energy storage devices. This study aims to prepare a novel composite material consisting of NiCo<sub>2</sub>S<sub>4</sub> and chitosan-derived carbon (CNNA) for use in high-performance supercapacitors. The prepared CNNA composite exhibited a high specific surface area of more than 27 m<sup>2</sup>/g. The CNNA electrode delivered a high specific capacitance of 1282 F.g<sup>−1</sup> at 1.0 A.g<sup>−1</sup>, significantly surpassing that of bare NiCo<sub>2</sub>S<sub>4</sub> (340 F.g<sup>−1</sup>) under the same conditions. Electrochemical analysis revealed that the charge storage behavior involved both capacitive and diffusion-controlled contributions, with the capacitive contribution increasing at higher scan rates. Furthermore, a solid-state asymmetric supercapacitor (ACCS//CNNA) was assembled using CNNA as the positive electrode and chitosan-derived carbon aerogel (ACCS) as the negative electrode. The device achieved a specific capacitance of 199 F.g<sup>−1</sup>, an energy density of 62 Wh.kg<sup>−1</sup>, and a power density of 750 W.kg<sup>−1</sup>, and retained 90.9 % of its initial capacitance after 10,000 charge–discharge cycles. These results clearly demonstrate the synergistic effect of NiCo<sub>2</sub>S<sub>4</sub> and N-doped carbon aerogel, highlighting the potential of CNNA as a sustainable and efficient electrode material. Using chitosan in NiCo<sub>2</sub>S<sub>4</sub>/carbon composites offers advantages, including nitrogen self-doping, the formation of a uniform nanostructure, and enhanced electrochemical performance compared to composites made from other biomass sources.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112517"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231404","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

PANI/FeS2/HPBC composite with cladding structure for high specific capacitance electrode in supercapacitors 具有包层结构的聚苯胺/FeS2/HPBC复合材料用于超级电容器高比电容电极

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-03 DOI: 10.1016/j.diamond.2025.112515

Zhenchao Gu , Ji Wang , Zihan Jin , Junrong Zhang , Shuaishuai Zhang , Peng Sun , Lianke Zhang

{"title":"PANI/FeS2/HPBC composite with cladding structure for high specific capacitance electrode in supercapacitors","authors":"Zhenchao Gu , Ji Wang , Zihan Jin , Junrong Zhang , Shuaishuai Zhang , Peng Sun , Lianke Zhang","doi":"10.1016/j.diamond.2025.112515","DOIUrl":"10.1016/j.diamond.2025.112515","url":null,"abstract":"<div><div>The integration of carbon-based materials with pseudocapacitive components represents an effective strategy for developing high-performance composite electrode materials. In this study, Sunflower straw-derived carbon (HPBC) with a hollow porous structure is developed and used as a conductive substrate for composites. HPBC provides enough space for the growth of redox-active substances. Subsequently, the solution oxidation method is utilized to synthesize PANI/FeS<sub>2</sub>/HPBC composite with a cladding structure. Electrochemical characterization reveals that the HPBC framework not only improves charge transport through enhanced conductivity but also stabilizes redox-active species, whereas the synergistic redox activity of FeS<sub>2</sub> and PANI delivers exceptional pseudocapacitance. Specifically, the PANI/FeS<sub>2</sub>/HPBC composite demonstrates a superior specific capacitance of 2242.4 F g<sup>−1</sup> at 1 A g<sup>−1</sup>, along with outstanding cycling stability evidenced by 85.3 % capacitance retention at 10 A g<sup>−1</sup> after 10,000 cycles. The assembled ASC displays an exceptional energy density of 32.44 Wh kg<sup>−1</sup> while delivering a power density of 800 W kg<sup>−1</sup>. Moreover, the ASC has an impressive cycle life, sustaining 85 % capacity retention after 5000 cycles at 10 A g<sup>−1</sup>. The developed PANI/FeS<sub>2</sub>/HPBC composite demonstrates promising prospects for supercapacitor electrode materials, with the sunflower straw-derived hollow porous carbon (HPBC) serving as an excellent substrate for composite fabrication.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112515"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144222487","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

Performance evaluation of DLC coated tools in high-speed micromilling of carbon fibre reinforced plastic DLC涂层刀具高速微铣削碳纤维增强塑料的性能评价

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-03 DOI: 10.1016/j.diamond.2025.112505

Shaik Mushraf Parvez , Rohit Kumar , Praveen Kumar , Venkataramana Bonu , Harish C. Barshilia , Rinku Kumar Mittal

{"title":"Performance evaluation of DLC coated tools in high-speed micromilling of carbon fibre reinforced plastic","authors":"Shaik Mushraf Parvez , Rohit Kumar , Praveen Kumar , Venkataramana Bonu , Harish C. Barshilia , Rinku Kumar Mittal","doi":"10.1016/j.diamond.2025.112505","DOIUrl":"10.1016/j.diamond.2025.112505","url":null,"abstract":"<div><div>Carbon fibre reinforced plastic (CFRP) is highly desirable for applications in strategic sectors such as aerospace, defence, etc., because of its high tensile strength, stiffness, lightweight nature, low thermal expansion, and high modulus of elasticity. The demand for miniature complex 3D features in CFRP composites is also gradually increasing. Micromilling is one of the micromachining processes that can create microfeatures on CFRP components with high material removal rates and surface finish. However, challenges like non-homogeneous structure and abrasive nature of the CFRP composites can lead to issues such as fibre delamination and tool wear. The localized heat buildup in the machining zone caused by the low thermal diffusivity of CFRP can also result in accelerated tool wear. There is a lack of research work in the area of micromilling of CFRP, which is essential for strategic sectors such as aerospace, semiconductor, defence, etc. Therefore, this study investigates the micromachinability of CFRP composites using high-speed micromilling with diamond-like carbon (DLC) coated tools. Experiments were conducted using uncoated and DLC coated tungsten carbide endmills at different feeds per flute and spindle speeds. The critical cutting zone and behavior of fibre delamination in CFRP were analyzed. Lower fibre delamination and lower cutting forces were observed for DLC coated tools. The DLC coated tools exhibited better surface quality and superior machining performance. Delamination of the coating at the rake face on the DLC coated tool was observed with an increase in feed per flute.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112505"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231402","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

Green synthesis of g-C3N4/CeO2 nanocomposites for enhanced photocatalytic degradation of organic dye under simulated sunlight 模拟阳光下g-C3N4/CeO2纳米复合材料增强光催化降解有机染料的绿色合成

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-02 DOI: 10.1016/j.diamond.2025.112484

Quang Dinh Ho , Van Duy Lai , Quynh Anh Nguyen , Dinh Ngo Vu , Thi Khanh Lam Dang , Duc D. La

{"title":"Green synthesis of g-C3N4/CeO2 nanocomposites for enhanced photocatalytic degradation of organic dye under simulated sunlight","authors":"Quang Dinh Ho , Van Duy Lai , Quynh Anh Nguyen , Dinh Ngo Vu , Thi Khanh Lam Dang , Duc D. La","doi":"10.1016/j.diamond.2025.112484","DOIUrl":"10.1016/j.diamond.2025.112484","url":null,"abstract":"<div><div>This study investigates the synthesis and photocatalytic efficiency of g-C<sub>3</sub>N<sub>4</sub>/CeO<sub>2</sub> nanocomposites for Methylene Blue (MB) degradation under simulated sunlight. Using Cleistocalyx operculatus leaf extract as a green reducing agent, the nanocomposites were successfully synthesized. The g-C<sub>3</sub>N<sub>4</sub>/CeO<sub>2</sub> (1:4) composite demonstrated a high surface area (130.54 m<sup>2</sup>/g) and a band gap of 2.49 eV, enhancing light absorption. Photocatalytic tests revealed that it achieved 95.70 % MB degradation, surpassing pure g-C<sub>3</sub>N<sub>4</sub> (68.90 %) and CeO<sub>2</sub> (72.12 %). The degradation followed pseudo-first-order kinetics, with a rate constant 6.08 times higher than CeO<sub>2</sub> and 4.57 times higher than g-C<sub>3</sub>N<sub>4</sub>. This remarkable efficiency is attributed to the composite's large surface area, improved charge separation, and synergistic interaction between g-C<sub>3</sub>N<sub>4</sub> and CeO<sub>2</sub>. These findings highlight the potential of g-C<sub>3</sub>N<sub>4</sub>/CeO<sub>2</sub> nanocomposites as efficient, sustainable photocatalysts for organic dye degradation in wastewater treatment.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112484"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231406","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

Low-leakage-current and improved thermal stability of normally-OFF hydrogen-terminated diamond FET via boron nitride passivation 通过氮化硼钝化的低漏电流和改善的常关氢端金刚石场效应管热稳定性

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-02 DOI: 10.1016/j.diamond.2025.112504

Mingyang Yang , Youwang Hu , Yongxin Duan , Yi Shen , Xiaoyan Sun , Kazuhito Nishimura , Yuehang Xu , Kuan W.A. Chee , Liangchao Guo , Nan Jiang , Qilong Yuan

{"title":"Low-leakage-current and improved thermal stability of normally-OFF hydrogen-terminated diamond FET via boron nitride passivation","authors":"Mingyang Yang , Youwang Hu , Yongxin Duan , Yi Shen , Xiaoyan Sun , Kazuhito Nishimura , Yuehang Xu , Kuan W.A. Chee , Liangchao Guo , Nan Jiang , Qilong Yuan","doi":"10.1016/j.diamond.2025.112504","DOIUrl":"10.1016/j.diamond.2025.112504","url":null,"abstract":"<div><div>Normally-OFF hydrogen-terminated diamond (H-diamond) field-effect transistor (FET) with low leakage current is highly desirable for energy-saving switching applications. Metal/H-diamond FET with Schottky gate exhibits potential application advantages, owing to its excellent switching speed and small subthreshold swing. However, a lower interface barrier height (Schottky junction) typically results in high leakage current and poor thermal stability. In this work, a normally-OFF H-diamond metal/insulator/semiconductor-metal/semiconductor hybrid gate FET (MIS-MES HGFET) was achieved by nano‑boron nitride (nano-BN) passivation at the Al/H-diamond interface to reduce leakage currents. The results achieved a low OFF-state drain-source current density of ∼10<sup>−9</sup> mA/mm. And the gate leakage current was suppressed by up to 6 orders of magnitude compared to FETs without nano-BN passivation. An ON/OFF ratio of 3.3 × 10<sup>9</sup> was also obtained for devices with a gate length of 4 μm, the subthreshold swing is 102 mV/dec, and the maximum drain current density is −8.6 mA/mm. Encouragingly, this FET still exhibited improved thermal stability at high temperatures. At 450 K, the device maintained an ON/OFF ratio of ∼1 × 10<sup>9</sup> and low leakage currents of ∼10<sup>−9</sup> mA/mm for both gate and OFF-state drain-source. In contrast, the counterpart device without nano-BN passivation failed at only 425 K. Such improvements can be attributed to the excellent passivation and insulating properties of BN, which not only enhance the Schottky barrier height at the Al/H-diamond interface but also serve as a gate insulator to effectively suppress tunneling-induced leakage current. Results of this work can promote the development of diamond FETs for energy-saving and high-temperature applications.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112504"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203012","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

Two-dimensional hexagonal boron nitride (h-BN) decorated on CeO2 heterojunction nanocomposite for improved photocatalysis degradation and antibacterial application 二维六方氮化硼（h-BN）修饰在CeO2异质结纳米复合材料上改善光催化降解和抗菌应用

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-02 DOI: 10.1016/j.diamond.2025.112494

Gunasekar Vijay , S. Shek Dhavud , Shen-Ming Chen , Z. Mohamed Riyas , Murugan Sethupathi , K. Raja Ramalingam , M. Sivakami

{"title":"Two-dimensional hexagonal boron nitride (h-BN) decorated on CeO2 heterojunction nanocomposite for improved photocatalysis degradation and antibacterial application","authors":"Gunasekar Vijay , S. Shek Dhavud , Shen-Ming Chen , Z. Mohamed Riyas , Murugan Sethupathi , K. Raja Ramalingam , M. Sivakami","doi":"10.1016/j.diamond.2025.112494","DOIUrl":"10.1016/j.diamond.2025.112494","url":null,"abstract":"<div><div>Two-dimensional (2D) materials have demonstrated remarkable capabilities as photocatalysts compared to their bulk versions. This research work meticulously describes the CeO<sub>2</sub>-h-BN heterojunction nanocomposites prepared via the liquid phase exfoliation method. The findings from the physicochemical analysis indicate the formation of a nanocomposite phase, accompanied by assessments of vibrational, optical, and surface elemental mapping. The photocatalytic properties of the prepared CeO<sub>2</sub>-h-BN nanocomposite were examined through the photodegradation of the organic dye methylene blue when exposed to UV–visible light. The photocatalysis measurements of CeO<sub>2</sub>, 58 % h-BN 49 %, compared to CeO<sub>2</sub>-h-BN nanocomposites exhibited outstanding efficiency in dye degradation, achieving an impressive maximum of 93 % after exposure to visible light for 140 min. Additionally, CeO<sub>2</sub>-hBN nanocomposites show antibacterial properties against both Gram-positive and Gram-negative bacteria. These results highlight the promising possibilities of CeO<sub>2</sub>-hBN nanocomposites for numerous applications, warranting further research and exploration.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112494"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144203014","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

Enhancing pseudocapacitive behavior of CoFe-LDH through MWCNTs conductive network: a strategy for ultra-stable supercapacitors 通过MWCNTs导电网络增强钴- ldh的赝电容行为：一种超稳定超级电容器的策略

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-06-02 DOI: 10.1016/j.diamond.2025.112499

Qihui Niu , Suna Zhang , Lijun Wang , Yongmin Qiao , Jianguang Xu , Jing Li , Wenqin Li , Yong Zhu , Yang Li , Huaqing Xie

{"title":"Enhancing pseudocapacitive behavior of CoFe-LDH through MWCNTs conductive network: a strategy for ultra-stable supercapacitors","authors":"Qihui Niu , Suna Zhang , Lijun Wang , Yongmin Qiao , Jianguang Xu , Jing Li , Wenqin Li , Yong Zhu , Yang Li , Huaqing Xie","doi":"10.1016/j.diamond.2025.112499","DOIUrl":"10.1016/j.diamond.2025.112499","url":null,"abstract":"<div><div>Layered double hydroxide (LDH) holds a prospective position in the realm of electrode materials for supercapacitors, due to its distinctive layered structure. However, its inherent low conductivity hinders its possible utilization in supercapacitors. In this study, we synthesized CoFe-LDH nanosheets and introduced multi-walled carbon nanotubes (MWCNTs) to construct MWCNTs wrapped CoFe-LDH nanocomposites. The results show that the CoFe-LDH/MWCNTs nanocomposite has a specific capacitance of 752.5 F/g under a current density of 1 A/g. The potential electrochemical capability of the CoFe-LDH/MWCNTs nanocomposite is excited via the construction of the conductive network of MWCNTs. High energy density (71 Wh/kg) and power density (9800 W/kg) are generated in an asymmetric supercapacitor with CoFe-LDH/MWCNTs nanocomposite as electrochemical active material, showing excellent cycle stability of 88.9 % capacitance remaining even after 10,000 cycles. These results indicate that MWCNTs wrapped CoFe-LDH composites are promising candidates for high performance supercapacitors.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112499"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196114","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}

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