Diamond and Related Materials最新文献_第5页

Effects of twin thickness, strain rate, and temperature on the mechanical properties of nanotwinned diamond

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-16 DOI: 10.1016/j.diamond.2024.111793

Xiuming Liu , Yuhang Zhang , Guangchuan Zhao , Dongliang Zhang , Feixiang Tang , Jianshu Liu , Yunfei Song , Qijun Wang , Fang Dong , Sheng Liu

{"title":"Effects of twin thickness, strain rate, and temperature on the mechanical properties of nanotwinned diamond","authors":"Xiuming Liu , Yuhang Zhang , Guangchuan Zhao , Dongliang Zhang , Feixiang Tang , Jianshu Liu , Yunfei Song , Qijun Wang , Fang Dong , Sheng Liu","doi":"10.1016/j.diamond.2024.111793","DOIUrl":"10.1016/j.diamond.2024.111793","url":null,"abstract":"<div><div>Nanotwinned (NT) diamond is a superior ceramic material known for its extreme hardness and strength. Both intrinsic and extrinsic factors strongly affect the mechanical properties of NT diamond. Here, we perform molecular dynamics (MD) simulations to study the mechanical properties of NT diamond under uniaxial tension, emphasizing the effects of twin thickness, strain rate, and temperature. The structural evolution, crack initiation and propagation, and scaling laws of strength and toughness are studied. Our findings reveal that a higher number of branching cracks enhance the mechanical properties of NT diamond, particularly when compared to single-crystal diamond. The presence of twin structures alters the orientation of diamond atoms, changing the direction of crack propagation and resulting in increased branching cracks upon fracture. Within constrained geometries, a “thinner is stronger” trend is observed concerning twin thickness. Our quantitative analysis further shows that mechanical properties decline with decreasing strain rates and increasing temperatures. This strain rate effect is attributed to the relaxation of residual stress, where the released energy compensates for the formation of new surfaces. We also provide a predictive model for the mechanical properties of NT diamond, offering valuable insights for the development of high-performance NT superhard materials.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111793"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748052","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

High-temperature tribological behaviors of polycrystalline diamond under water-based drilling fluid environments 聚晶金刚石在水基钻井液环境下的高温摩擦学行为

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-16 DOI: 10.1016/j.diamond.2024.111785

Yu-jie Guo , Ding-shun She , Wen Yue , Jin-hua Wang , Hai-bo Liang , Ren Wang , Lei Cui

{"title":"High-temperature tribological behaviors of polycrystalline diamond under water-based drilling fluid environments","authors":"Yu-jie Guo , Ding-shun She , Wen Yue , Jin-hua Wang , Hai-bo Liang , Ren Wang , Lei Cui","doi":"10.1016/j.diamond.2024.111785","DOIUrl":"10.1016/j.diamond.2024.111785","url":null,"abstract":"<div><div>For purposes of investigating the high-temperature tribological behaviors of polycrystalline diamond (PCD) thrust bearings under simulated deep drilling conditions, tribological experiments have been conducted under various drilling fluid environments, including pure water-based, potassium-based, calcium-based, sodium-based, and mud drilling fluids. The linear reciprocating mode of CSM-TRN model tribo-tester has been used to reveal the lubrication mechanisms of these fluids at a working temperature of 125 °C. Experimental results demonstrate the PCD compacts tested under pure water-based drilling fluid environment show a higher friction coefficient and wear rate, compared with that tested under potassium-based, calcium-based, sodium-based and mud drilling fluids. The high coverage of the graphitization tribo-chemical films can hinder the oxidization and exfoliation of the PCD, which finally leads to the wear rates under potassium-based, calcium-based, sodium-based and mud drilling fluids are lower than that under pure water-based drilling fluid. Compared with that calcium-based, sodium-based and mud drilling fluids, the PCD compacts tested under potassium-based drilling fluid environment exhibit a low friction coefficient of 0.073 and a low wear rate of 3.15×10<sup>−2</sup> mg/N·m resulting from the synergistic effect of low viscosity of drilling fluid, a smooth worn surface and the lubrication of graphitization tribo-chemical films.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111785"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702818","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

Viscoelastic and thermal properties of unzipped multiwalled carbon nanotubes reinforced polyamide-6 composites 未拉链多壁碳纳米管增强聚酰胺-6 复合材料的粘弹性和热性能

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-16 DOI: 10.1016/j.diamond.2024.111766

Sangita Tripathy , Gaurav Singh Chauhan , Jeevan Jyoti , Sushant Sharma , Sanjay R. Dhakate , Bhanu Pratap Singh

{"title":"Viscoelastic and thermal properties of unzipped multiwalled carbon nanotubes reinforced polyamide-6 composites","authors":"Sangita Tripathy , Gaurav Singh Chauhan , Jeevan Jyoti , Sushant Sharma , Sanjay R. Dhakate , Bhanu Pratap Singh","doi":"10.1016/j.diamond.2024.111766","DOIUrl":"10.1016/j.diamond.2024.111766","url":null,"abstract":"<div><div>The excellent reinforcing capability of carbon nanofillers along with increasing demand for advanced polymer composites in automobiles, aircraft, and defense sectors motivate the research community to explore detailed mechanical, thermal, and electrical properties of carbon-based polymer nanocomposites for various applications. In this work, 0.1 to 7 parts per hundred ratios (phr) of multiwalled carbon nanotubes (MWCNTs) and unzipped MWCNTs (referred to as graphene oxide nanoribbons (GONRs)) were individually reinforced into polyamide-6 (PA6) matrix by twin-screw extrusion and standard sized specimens were prepared by the injection molding process. The interaction among PA6 and nanofillers were analyzed using Raman and FTIR spectroscopy. The oscillatory rheometry measurement at 0.1 rad/s angular frequency showed a 110.7 % rise in storage modulus and a 12.6 % rise in loss modulus for 0.1 phr GONRs reinforcements. Both the values raised by 100 % and 12.5 %, respectively for similar amounts of MWCNTs reinforcements. The thermo-gravimetric analysis (TGA) indicated the optimum thermal stability at 1 phr of GONRs content compared to the increasing stability with increasing MWCNTs content within PA6. The differential scanning calorimetry (DSC) curves indicated the optimum reinforcing capacity of GONRs at 0.5–3 phr reinforcements, as compared to those increasing for increasing MWCNTs content. An optimum reinforcing capacity at lower amounts of GONRs as compared to MWCNTs was confirmed from shifting trends of intensity peaks in Raman and FTIR spectra curves of the composites. It was attributed to high surface area and functional groups along the edges of GONRs. Altogether, the GONRs/PA6 composites possess excellent potential for applications in automotive and aerospace components, ballistics equipments, electronics, biomedicals, sensors, etc., requiring high mechanical and thermal stability.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111766"},"PeriodicalIF":4.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721853","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

A study of the friction and thermal properties of epoxy composites synergistically reinforced by open-celled Cu foams and carboxylated CNTs 开胞铜泡沫和羧基碳纳米管协同增强环氧树脂复合材料的摩擦和热性能研究

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-15 DOI: 10.1016/j.diamond.2024.111791

Luqiang Li , Hongqu Jiang , Yuan Luo , Haijun Wu , Qi Zhao , Xingxia Yang , Caiju Li , Jianhong Yi , Yichun Liu

{"title":"A study of the friction and thermal properties of epoxy composites synergistically reinforced by open-celled Cu foams and carboxylated CNTs","authors":"Luqiang Li , Hongqu Jiang , Yuan Luo , Haijun Wu , Qi Zhao , Xingxia Yang , Caiju Li , Jianhong Yi , Yichun Liu","doi":"10.1016/j.diamond.2024.111791","DOIUrl":"10.1016/j.diamond.2024.111791","url":null,"abstract":"<div><div>Epoxy resin (EP) plays an important role in the field of friction, but its poor thermal conductivity limits its mature development in industry. To solve this problem, open cell copper foam (Cu<sub>f</sub>) and carboxylated carbon nanotubes (C-CNTs) were incorporated into the epoxy group as co-intensifiers to improve its thermal conductivity and frictional properties. The results demonstrate that increasing the pore density of Cu<sub>f</sub>/EP composite copper foam leads to a 33.6 % reduction in wear rate and 23.2 times increase in thermal conductivity when reaching 130 Pores Per Inch (PPI). Furthermore, increasing the content of C-CNTs in Cu<sub>f</sub>®(C-CNTs/EP) composites resulted in decreased friction coefficient and wear rate; at 0.75 wt% C-CNTs content, the friction coefficient decreased by 9.5 % and the wear rate decreased by 40.6 % compared to that of the (130PPICu<sub>f</sub>)/EP composites while also achieving a 54.8 % increase in thermal conductivity.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111791"},"PeriodicalIF":4.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657858","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

CO2-converted carbon nanotubes produced from molten salt electrolytes process for application of eco-friendly sustainable anode for sodium ion batteries 利用熔盐电解质工艺生产二氧化碳转化碳纳米管，用于钠离子电池的环保型可持续阳极

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-15 DOI: 10.1016/j.diamond.2024.111790

Sukanya Pothaya , Chatwarin Poochai , Sarun Arunragsa , Phakin Chomyen , Anurat Wisitsoraat , Pimpa Limthongkul , Chakrit Sriprachuabwong

{"title":"CO2-converted carbon nanotubes produced from molten salt electrolytes process for application of eco-friendly sustainable anode for sodium ion batteries","authors":"Sukanya Pothaya , Chatwarin Poochai , Sarun Arunragsa , Phakin Chomyen , Anurat Wisitsoraat , Pimpa Limthongkul , Chakrit Sriprachuabwong","doi":"10.1016/j.diamond.2024.111790","DOIUrl":"10.1016/j.diamond.2024.111790","url":null,"abstract":"<div><div>CO<sub>2</sub>-converted carbon nanotube (CNT) has been synthesized from industrial carbon dioxide emissions using a molten salt electrochemical process for an eco-friendly sustainable anode of sodium ion batteries (SIBs). The synthesized CNT have diameters ranging from 10 to 100 nm, and they combine with hard carbon (HC) to serve as SIB anode material. The synthesized CNT has the following roles: increasing the electrical conductivity of anode material, improving charge-discharge cycle stability, and enhancing sodium ion storage. We integrate these CNT into hard carbon by varying CNT contents, denoted as HC_xCNT(M), where x represents the weight of the CNT. So, the HC_5CNT(M) anode works better in half-cell SIBs, being able to handle different charging rates and reaching a maximum specific capacity of 256.7 mAh g<sup>−1</sup> at a 0.2C-rate. This material also displayed remarkable stability, maintaining a specific capacity of 99.48 mAh g<sup>−1</sup> at 1C-rate and the capacitive retention remained at 99.1 % after 800 cycles. The CO<sub>2</sub>-converted CNT can improve electrical conductivity, specific capacity, and cycle stability, according to electrochemical analysis results. This innovative approach not only contributes to sustainable energy storage but also provides a valuable solution for reducing carbon emissions and repurposing industrial waste.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111790"},"PeriodicalIF":4.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702810","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

Facile synthesis of novel nitrogen-doped diamond with excellent microwave absorption and thermal conductive performance 轻松合成具有优异微波吸收和导热性能的新型掺氮金刚石

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-15 DOI: 10.1016/j.diamond.2024.111789

Chencheng Liu , Tong Zhu , Jing Jia , Yi Zhu , Qingyun Chen , Wei Zhang , Wenlong Zhang , Hui Song , Yuezhong Wang , Nan Jiang

{"title":"Facile synthesis of novel nitrogen-doped diamond with excellent microwave absorption and thermal conductive performance","authors":"Chencheng Liu , Tong Zhu , Jing Jia , Yi Zhu , Qingyun Chen , Wei Zhang , Wenlong Zhang , Hui Song , Yuezhong Wang , Nan Jiang","doi":"10.1016/j.diamond.2024.111789","DOIUrl":"10.1016/j.diamond.2024.111789","url":null,"abstract":"<div><div>Herein, nitrogen doped polycrystalline diamond was prepared using the microwave plasma chemical vapor deposition (MPCVD) method with H<sub>2</sub>–CH<sub>4</sub>–N<sub>2</sub> gas sources to achieve excellent electromagnetic (EM) wave absorption and thermal management properties. The effect of the nitrogen content (0 to 50 ppm) on its performance was studied. The 25-ppm nitrogen doped diamond demonstrated excellent EM wave absorption performance, achieving a minimum reflection loss (RL<sub>min</sub>) of −44.8 dB at 6.7 GHz and a maximum effective absorption band (EAB) of 5.4 GHz (3.7–9.1 GHz). The superior absorption performance could be attributed to synergistic attenuation mechanisms including dipole and interface polarization, conduction loss, eddy current loss, and magnetic polarization, intensified by nitrogen vacancy centers. This multifunctional material, combining high thermal conductivity with effective low-frequency EM wave absorption, showed promise for applications in 5G communications and electronic devices.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111789"},"PeriodicalIF":4.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702993","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

Electrochemical performance of MnMoO4-decorated MWCNT nanocomposite plates for asymmetric capacitor applications 用于不对称电容器应用的 MnMoO4 装饰 MWCNT 纳米复合板的电化学性能

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-15 DOI: 10.1016/j.diamond.2024.111743

N. Jafarulla , Shanmugaiah Mathan Kumar

{"title":"Electrochemical performance of MnMoO4-decorated MWCNT nanocomposite plates for asymmetric capacitor applications","authors":"N. Jafarulla , Shanmugaiah Mathan Kumar","doi":"10.1016/j.diamond.2024.111743","DOIUrl":"10.1016/j.diamond.2024.111743","url":null,"abstract":"<div><div>To improve advanced energy storage systems, innovative and versatile electrode materials with exceptional electrochemical characteristics must be developed. In this study, we present a new and distinctive design for an electrode made of MWCNT nanowires decorated on plates like MnMoO<sub>4</sub>. The nanocomposite was fabricated using a hydrothermal method and developed for use in an asymmetric supercapacitor. Initially, the samples underwent thorough examination using spectroscopic techniques such as XRD and XPS, as well as microscopic investigation using FE-SEM. The sample provides an effective mesoporous structure, facilitates the flow of ions, enables fast electron transfer, and permits a higher concentration of MnMoO<sub>4</sub> and MWCNT active sites. The MnMoO<sub>4</sub>/MWCNT composite has a specific capacitance (C<sub>s</sub>) of 1800 F/g at 1 A g<sup>−1</sup>, demonstrating excellent durability in a three-electrode cell. The built asymmetric supercapacitors demonstrate a power density of 1062 W kg<sup>−1</sup> and an energy density of 42.48 Wh kg<sup>−1</sup>. Furthermore, the ASCs exhibit remarkable cycling stability, with about 93% capacity retention after undergoing 10,000 cycles. Therefore, the current work clearly shows its effective due to its excellent electrochemical properties, this material shows great potential to be used in storage systems for energy.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111743"},"PeriodicalIF":4.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702815","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

One-step solvothermal synthesis of hollow Fe3O4/single walled carbon nanohorns composites with excellent microwave absorption properties 一步溶热合成具有优异微波吸收特性的空心 Fe3O4/单壁碳纳米角复合材料

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-14 DOI: 10.1016/j.diamond.2024.111783

Yurong Liu , Huijie Wu , Heng Wang , Jinbiao Wang

引用次数: 0

Preparation and characterization of ball milled titanium oxide/multi walled carbon nanotube nanocomposite for supercapacitor applications 用于超级电容器的球磨氧化钛/多壁纳米碳管纳米复合材料的制备与表征

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-14 DOI: 10.1016/j.diamond.2024.111787

Hoda EL-Nagar , M.S. Abd El-sadek , Mohamed Khairy , E.M.M. Ibrahim , S. Hampel , Sahar Elnobi

{"title":"Preparation and characterization of ball milled titanium oxide/multi walled carbon nanotube nanocomposite for supercapacitor applications","authors":"Hoda EL-Nagar , M.S. Abd El-sadek , Mohamed Khairy , E.M.M. Ibrahim , S. Hampel , Sahar Elnobi","doi":"10.1016/j.diamond.2024.111787","DOIUrl":"10.1016/j.diamond.2024.111787","url":null,"abstract":"<div><div>In this work, titanium oxide nanoparticles (TiO<sub>2</sub> NPs) and TiO<sub>2</sub>-Multi walled carbon nanotubes (MWCNTs) nanocomposites were prepared using the ball milling technique. The characterization of synthesized nanocomposite was done using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS), Raman spectroscopy, and transmission electron microscopy (TEM). Dielectric constant ε<sub>1</sub> (ω) and dielectric loss ε<sub>2</sub> (ω) were discussed in terms of the dielectric polarization process. The Ac conductivity was increased with increasing MWCNTs amount. The charge carrier transport mechanism was interpreted using the correlated barrier hopping model (CBH). The Impedance spectroscopy showed a non-Debye relaxation in the material. The specific capacitance was increased with increasing MWCNTs concentration. Based on these detailed results, the TiO<sub>2</sub>-MWCNTs nanocomposites displayed higher specific capacitance than TiO<sub>2</sub>. In addition, the control of the current density applied onto CV measurements and MWCNTs composition of the electrodes to enhance the capacitance will open up a new strategy for the high-performance supercapacitors.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111787"},"PeriodicalIF":4.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702812","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

Novel N-doped ZnO and O-doped g-C₃N₄ heterojunction: Enhanced photocatalytic degradation and robust electrochemical biosensing of ascorbic acid 新型 N 掺杂氧化锌和 O 掺杂 g-C₃N₄ 异质结：增强抗坏血酸的光催化降解和稳健的电化学生物传感

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2024-11-14 DOI: 10.1016/j.diamond.2024.111752

Muhammad Danish Khan , Masood ul Hassan Farooq , Iqra Fareed , Muhammad Farooq Khan , Zia Ur Rehman , Umaira Ayoub , Anwaar Ahmed , Faheem K. Butt

{"title":"Novel N-doped ZnO and O-doped g-C₃N₄ heterojunction: Enhanced photocatalytic degradation and robust electrochemical biosensing of ascorbic acid","authors":"Muhammad Danish Khan , Masood ul Hassan Farooq , Iqra Fareed , Muhammad Farooq Khan , Zia Ur Rehman , Umaira Ayoub , Anwaar Ahmed , Faheem K. Butt","doi":"10.1016/j.diamond.2024.111752","DOIUrl":"10.1016/j.diamond.2024.111752","url":null,"abstract":"<div><div>ZnO and g-C₃N₄ are known for their potential in photocatalytic degradation and electrochemical applications, but their limited band gaps and electrical conductivity hinders performance. Doping is a strategy to modify these properties. This study reports the synthesis of nitrogen-doped ZnO (N-ZnO) and oxygen-doped g-C₃N₄ (OCN) nanocomposites using an in-situ hydrothermal process. Structural and compositional analysis confirmed successful synthesis, while FESEM and HRTEM revealed N-ZnO nanorods decorating OCN sheets. Optical analysis indicated a band gap of 2.54 eV, making the material active under visible light. The nanocomposites demonstrated 90 % photodegradation of methylene blue (MB) within 20 min, with a high rate constant (k = 0.1269 min<sup>−1</sup>), facilitated by a <em>Z</em>-scheme heterojunction. The catalyst remained stable even after 5 cycles. Moreover, electrochemical biosensing of ascorbic acid (AA) showed a regression value of 0.9965 with high anodic current response and small limit of detection (LOD) value, underscoring the potential of nanocomposite material for commercial applications in both photocatalysis and diagnostics.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"151 ","pages":"Article 111752"},"PeriodicalIF":4.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657852","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