IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-20 DOI: 10.1016/j.carbon.2025.120859

Xiguang Ye , Haiyu Feng , Zhongzheng Chen , Yuanyuan Zhang , Jinyi Mei , Bin Li , Xiaorong Lin

{"title":"Soft-templated fabrication of multifunctional selenium nanozymes using carbon quantum dots for sensing applications","authors":"Xiguang Ye , Haiyu Feng , Zhongzheng Chen , Yuanyuan Zhang , Jinyi Mei , Bin Li , Xiaorong Lin","doi":"10.1016/j.carbon.2025.120859","DOIUrl":"10.1016/j.carbon.2025.120859","url":null,"abstract":"<div><div>In this study, carbon quantum dots (CQDs) served as functional templates to successfully construct novel CQD-stabilized selenium nanozymes (CQDs-SeNPs) with dual fluorescence and enzyme-like activity response characteristics. The stabilization and functionalization effects of CQDs not only achieved highly dispersed SeNPs (with D<sub>H</sub> of 33.76 ± 7.72 nm and Zeta potential of −45.67 mV), but also endowed it with excellent photoluminescence properties and Hg<sup>2+</sup>-triggered oxidase-like activity. A multimodal Hg<sup>2+</sup> sensing platform was developed by synergistically combining fluorescence quenching and enzyme activity activation. The sensor demonstrates high selectivity, rapid response (<20 min), and dual-mode detection: fluorescence (0.78–12.50 μmol/L, LOD = 0.14 μmol/L) and colorimetric (25.00–50.00 μmol/L, LOD = 6.13 μmol/L), achieving a broad detection range of 0.78–50.00 μmol/L. The results of this study fully underscore the role of CQDs in enhancing nanomaterial performance and highlight the potential of selenium-based nanozymes for rapid Hg<sup>2+</sup> detection.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120859"},"PeriodicalIF":11.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Precision vacancy engineering and element refilling in S-scheme C3N5/Bi2MoO6 heterojunction for efficient photo-Fenton degradation of tetracycline S-scheme C3N5/Bi2MoO6异质结中精确空位工程和元素填充的光- fenton高效降解四环素

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-20 DOI: 10.1016/j.carbon.2025.120860

Huimin Su , Jinlong Li , Mingna Chu , Yan Zhuang , Dongxuan Guo , Shuang Meng , Dantong Zhang , Xue Yang , Yue Li , Guozhe Sui

{"title":"Precision vacancy engineering and element refilling in S-scheme C3N5/Bi2MoO6 heterojunction for efficient photo-Fenton degradation of tetracycline","authors":"Huimin Su , Jinlong Li , Mingna Chu , Yan Zhuang , Dongxuan Guo , Shuang Meng , Dantong Zhang , Xue Yang , Yue Li , Guozhe Sui","doi":"10.1016/j.carbon.2025.120860","DOIUrl":"10.1016/j.carbon.2025.120860","url":null,"abstract":"<div><div>The Fe–B(P, S)– C<sub>3</sub>N<sub>5</sub>(v)/Bi<sub>2</sub>MoO<sub>6</sub> (Fe–CN<sub>V</sub> (B, P, S)/BMO) composite was first designed as a high-efficiency photo-Fenton catalyst for tetracycline (TC) degradation. Remarkably, the optimized Fe–B–C<sub>3</sub>N<sub>5</sub>(v)/Bi<sub>2</sub>MoO<sub>6</sub> achieves 91.9 % TC degradation efficiency with a mineralization efficiency of 81.3 % within 120 min under visible light illumination with 0.02 mM H<sub>2</sub>O<sub>2</sub>, exhibiting a first-order rate constant (k) of 0.01775 min<sup>−1</sup> (R<sup>2</sup> = 0.9291) and an approximately 3-fold enhancement in photo-Fenton degradation activity compared to pristine C<sub>3</sub>N<sub>5</sub>. Combined experimental and theoretical analyses confirm that the performance improvement primarily originates from the synergistic effects of vacancy engineering, element refilling and S-scheme heterojunction construction, which significantly promote H<sub>2</sub>O<sub>2</sub> activation by enhancing charge separation and providing abundant active sites. The capture experiments revealed that the •O<sub>2</sub><sup>−</sup> and •OH are the dominant active species to induce the degradation of TC, along with a suggested decomposition pathway according to the detected main intermediates. This further confirms that charge modulation coupled with effective reactant activation can significantly enhance the degradation efficiency of TC organic pollutants. This work offers a feasible pathway for the rational design of photo-Fenton systems towards recyclable degradation of environmental contaminants.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120860"},"PeriodicalIF":11.6,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pt-loaded nitrogen/sulfur co-doped graphene aerogel microspheres prepared by airflow-assisted electrostatic spraying for methanol electrooxidation 气流辅助静电喷涂制备负载pt的氮/硫共掺杂石墨烯气凝胶微球用于甲醇电氧化

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-17 DOI: 10.1016/j.carbon.2025.120845

Jie Liu , Zhishuai Tian , Yifan Cai , Bowen Huang , Xili Lu , Marino Lavorgna , Hesheng Xia

{"title":"Pt-loaded nitrogen/sulfur co-doped graphene aerogel microspheres prepared by airflow-assisted electrostatic spraying for methanol electrooxidation","authors":"Jie Liu , Zhishuai Tian , Yifan Cai , Bowen Huang , Xili Lu , Marino Lavorgna , Hesheng Xia","doi":"10.1016/j.carbon.2025.120845","DOIUrl":"10.1016/j.carbon.2025.120845","url":null,"abstract":"<div><div>The Pt-loaded nitrogen and sulfur co-doped graphene composite aerogel microspheres (Pt/NS-GAMs) are created through air-assisted electrostatic spraying of an aqueous dispersion of graphene oxide and <span>l</span>-cysteine, followed by freezing, freeze-drying, high-temperature carbonization, doping, and platinum (Pt) loading through a solvothermal reduction reaction. The Pt/NS-GAMs have an average microsphere size of 59.24 μm and a specific surface area of 331.36 m<sup>2</sup> g<sup>−1</sup>. The formation of the hierarchical and interconnected pores in the small aerogel microspheres facilitates the Pt loading and dispersion. The N/S co-doping enhances the interaction between Pt and graphene, suppresses the agglomeration of Pt, promotes their uniform distribution and the formation of smaller size Pt nanoparticles (Pt NPs), and also improves the electrode's charge transfer capability. Furthermore, the N/S co-doping can increase the proportion of highly active Pt(111) crystal planes and modulate the Pt electronic structure. Consequently, the Pt/NS-GAMs electrode exhibits excellent electrocatalytic methanol oxidation performance with a mass activity of up to 1459.74 mA·mg<sup>−1</sup><sub>Pt</sub>, which is 4.35 times higher than that of commercial Pt/C electrodes. The Pt/NS-GAMs electrode also demonstrates long-term electrocatalytic stability. The role of the formed pyrrolic-N and thiophenic-S by N/S-doping in tuning the Pt's electronic structure and its subsequent impact on the electrocatalytic reaction (MOR) on the Pt surface is disclosed by DFT theoretical calculations. The N and S co-doped structure lowers the energy of the Pt d-band centre, and weakens the adsorption strength of CO on the Pt active site by sacrificing partial electron transfer.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120845"},"PeriodicalIF":11.6,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Nano-FTIR identification of functionalization in two-photon oxidized graphene 双光子氧化石墨烯官能化的纳米ftir鉴定

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-17 DOI: 10.1016/j.carbon.2025.120851

Gour Mohan Das , Eero Hulkko , Aleksei Emelianov , Marc Garriga Santiveri , Pasi Myllyperkiö , Andreas Johansson , Mika Pettersson

{"title":"Nano-FTIR identification of functionalization in two-photon oxidized graphene","authors":"Gour Mohan Das , Eero Hulkko , Aleksei Emelianov , Marc Garriga Santiveri , Pasi Myllyperkiö , Andreas Johansson , Mika Pettersson","doi":"10.1016/j.carbon.2025.120851","DOIUrl":"10.1016/j.carbon.2025.120851","url":null,"abstract":"<div><div>Graphene oxide (GO) plays an important role in next-generation electronic, photonic, and sensing technologies due to its tunable chemical functionality and unique electronic properties. However, characterizing the spatial and chemical heterogeneity of GO at the nanoscale remains a persistent challenge, due to the limitations of conventional spectroscopy in resolving localized functional groups. This is especially true for GO modified by femtosecond laser-induced two-photon oxidation (TPO), which creates spatially confined chemical environments that bulk techniques struggle to resolve. Herein, we employ Fourier transform infrared nanospectroscopy (nano-FTIR) to achieve highly localized, nanoscale chemical characterization of two-photon produced GO. Using tip-enhanced spectroscopy, we resolve the vibrational fingerprints of key functional groups with sub-diffraction spatial resolution. Nano-FTIR analysis reveals that epoxide groups dominate the oxidation, with a strong vibrational feature consistently appearing near 1225 cm<sup>−1</sup>. Laser writing parameters are systematically varied to understand dose-dependent oxidation behavior. The resulting chemical contrasts are validated by Raman spectroscopy, AFM topography, and comparison with commercial GO. Our findings demonstrate that nano-FTIR not only maps chemical heterogeneity with unprecedented precision but also reveals nonlinear oxidation dynamics. This work highlights the utility of nano-FTIR as a powerful non-destructive tool for spatially resolved chemical analysis of laser-induced graphene or other 2D-materials.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120851"},"PeriodicalIF":11.6,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic effects of surface chemistry and porosity in vanadium redox reactions: from smooth thin films to high surface area carbon electrodes 钒氧化还原反应中表面化学和孔隙度的协同效应：从光滑薄膜到高表面积碳电极

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-17 DOI: 10.1016/j.carbon.2025.120853

Maida A. Costa de Oliveira , Runbo Zhang , Christian Schröder , Filippo Pota , Marc Brunet Cabré , Kim McKelvey , Paula E. Colavita

{"title":"Synergistic effects of surface chemistry and porosity in vanadium redox reactions: from smooth thin films to high surface area carbon electrodes","authors":"Maida A. Costa de Oliveira , Runbo Zhang , Christian Schröder , Filippo Pota , Marc Brunet Cabré , Kim McKelvey , Paula E. Colavita","doi":"10.1016/j.carbon.2025.120853","DOIUrl":"10.1016/j.carbon.2025.120853","url":null,"abstract":"<div><div>Vanadium redox flow batteries (VRFB) are promising devices for energy storage. However, sluggish kinetics at conventional porous carbon electrodes can limit efficiency, thus prompting interest in N-functionalization for improving performance. Herein synergistic impacts of changes in wettability and chemical reactivity arising from surface pyridinic-N functionalities are investigated. First, fabrication of model carbon electrodes with smooth topography and disk geometry, grafted with pyridyl groups at varying coverage is reported. These are used to unambiguously determine the impact of pyridinic-N sites on the intrinsic activity of carbon surfaces towards VO<sub>2</sub><sup>+</sup>/VO<sup>2+</sup> reactions. Combined voltammetry and finite element simulations provided estimates of heterogeneous charge-transfer constants, <em>k</em><sup><em>0</em></sup><em>,</em> which increase by up to 50-fold upon pyridyl grafting. Pyridyl groups also increase wettability however this is not sufficient to improve charge-transfer kinetics at carbon: indeed, treatments that increase hydrophilicity without grafting pyridyl groups yield no change in <em>k</em><sup><em>0</em></sup>. The impact of pyridyl grafting at porous carbon collectors is then investigated using voltammetry and VRFB tests. Results indicate that wettability changes overwhelmingly determine the response and obscure the effects of pyridinic-N on intrinsic activity. All surface treatments that increase wettability lead to comparable responses, thus evidencing key challenges in applying chemical design principles to complex carbon electrode architectures.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120853"},"PeriodicalIF":11.6,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Elucidating the roles of carbon black in filler- and rubber-filler interactions using synchrotron Nano-CT and STXM 利用同步加速器纳米ct和STXM研究炭黑在填料和橡胶填料相互作用中的作用

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-17 DOI: 10.1016/j.carbon.2025.120848

Huasheng Yuan , Yuting Wang , Liang Chen , Keran Zhu , Shiping Jiang , Zhenling Luo , Jian Wang , Yesheng Zhu

{"title":"Elucidating the roles of carbon black in filler- and rubber-filler interactions using synchrotron Nano-CT and STXM","authors":"Huasheng Yuan , Yuting Wang , Liang Chen , Keran Zhu , Shiping Jiang , Zhenling Luo , Jian Wang , Yesheng Zhu","doi":"10.1016/j.carbon.2025.120848","DOIUrl":"10.1016/j.carbon.2025.120848","url":null,"abstract":"<div><div>To investigate the correlation of carbon black (CB) surface activity to filler-filler and rubber-filler interactions, the CB underwent heat treatment with high-temperature and oxidation with concentrated nitric acid. With synchrotron radiation-based X-ray Nano-CT and scanning transmission X-ray microscopy (STXM), the dispersing structures and rubber-filler interactions of CB with different surface activities in natural rubber (NR) were studied. The results showed that the heated CB with inactive surface tended to gather together in small sizes and dispersed homogeneously in NR, while the oxidized CB aggregated in big sizes and dispersed inhomogeneously in non-polar NR. Meanwhile, oxygen-containing functional groups (C–O, C<img>O) on CB surface were strongly conjugated with C–H groups from NR and induced C–H group orientations, and the more activities on the CB surface, the stronger rubber-filler interactions. With the measured stress-strain curves and the stress-bearing and strain-bearing double network models, the moduli of the CB fillers in NR were calculated. A nonlinear increase of the CB filler moduli was observed as compared to the CB content in NR. Specifically, with the CB content increasing 5 times, the CB filler moduli increased about 10 times or more. This suggest that the CB filler-filler interactions (filler network structures) are more effective in NR reinforcement than rubber-filler interactions. Thus, the modulus of the heated CB with weak rubber-filler interactions was larger than that of the oxidized CB with strong rubber-filler interactions. The insightful information provides a valuable perspective on the CB reinforcement mechanisms and the design of new rubber composites with specific properties.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120848"},"PeriodicalIF":11.6,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fluidization synthesis of silicon-nanocrystals embedded mesoporous carbon for high-performance lithium-ion batteriess 高性能锂离子电池用嵌入介孔碳的硅纳米晶流态化合成

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-17 DOI: 10.1016/j.carbon.2025.120849

Zhitao Jiang , Liao Shen , Jijun Lu , Lei Wang , Peng Lin , Yuelong Yu , Fengshuo Xi , Longyang Dai , Dongxian Zhang , Jianzhong Jiang , Wenhui Ma , Shaoyuan Li

{"title":"Fluidization synthesis of silicon-nanocrystals embedded mesoporous carbon for high-performance lithium-ion batteriess","authors":"Zhitao Jiang , Liao Shen , Jijun Lu , Lei Wang , Peng Lin , Yuelong Yu , Fengshuo Xi , Longyang Dai , Dongxian Zhang , Jianzhong Jiang , Wenhui Ma , Shaoyuan Li","doi":"10.1016/j.carbon.2025.120849","DOIUrl":"10.1016/j.carbon.2025.120849","url":null,"abstract":"<div><div>Silicon carbon (Si/C) composites are widely regarded as leading anode candidates for high-energy-density power batteries in the path toward commercialization. However, the conventional preparation processes of nano-Si/carbon composites still face challenges such as severe agglomeration and uneven distribution of nano-Si, insufficient conductive interface contact, and severe volume expansion during cycling. In this work, we propose a strategy for the fabrication of Si-nanocrystal/carbon composites by sequential fluidized chemical vapor deposition (CVD) of silane (SiH<sub>4</sub>) and acetylene (C<sub>2</sub>H<sub>2</sub>) within porous carbon materials. Taking advantage of the high-temperature decomposition of SiH<sub>4</sub>, nano-sized Si-crystallites (<5 nm) are uniformly deposited inside the porous carbon matrix, which enhances the interfacial contact in Si/C composites and improving the electron/ion transport kinetics. An optimally regulated C<sub>2</sub>H<sub>2</sub>-derived carbon coating further stabilizes the electrode structure and effectively mitigates the volume expansion of Si. Meanwhile, the fluidized engineering approach strengthens the mass transfer rate during the fabrication process, thereby shortening the manufacturing time and improving the uniformity of Si-nanocrystal deposition. The as-prepared Si-nanocrystal/carbon composites, when applied as anode materials for lithium-ion batteries, exhibit excellent electrochemical performance. The composite delivers an initial coulombic efficiency (ICE) of 76 % at a current density of 0.3 A g<sup>−1</sup> and maintains a reversible capacity of 733.6 mAh g<sup>−1</sup> after 100 cycles. The effective adoption of this approach provides a novel route toward the commercialization of Si/C anode materials.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120849"},"PeriodicalIF":11.6,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

New insights into the mechanisms of biomass-derived carbon quantum dots for photocatalytic disinfection 生物质衍生的碳量子点光催化消毒机制的新见解

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-17 DOI: 10.1016/j.carbon.2025.120836

Kazumasa Yoda , Ryota Koide , Keiichiro Koizumi , Mutsuki Oikawa , Yukari Miyazaki , Lue Sun , Noriko Yoshizawa , Zheng-Ming Wang

{"title":"New insights into the mechanisms of biomass-derived carbon quantum dots for photocatalytic disinfection","authors":"Kazumasa Yoda , Ryota Koide , Keiichiro Koizumi , Mutsuki Oikawa , Yukari Miyazaki , Lue Sun , Noriko Yoshizawa , Zheng-Ming Wang","doi":"10.1016/j.carbon.2025.120836","DOIUrl":"10.1016/j.carbon.2025.120836","url":null,"abstract":"<div><div>As a potential substitute for photo-disinfection reagents in water treatment, cost-effective and eco-friendly carbon quantum dots (CQDs) have recently attracted significant interest. However, the photo-disinfection mechanism of CQDs remains insufficiently explored. In this study, we focus on two typical nitrogen-containing CQDs (NCQDs) derived from common biomass substrates, namely citric acid and sucrose, to examine their differences in disinfection mechanisms by carefully analyzing their surface chemistry, light absorption/photoluminescence properties, and reactive oxygen species (ROS) generation. Our findings reveal that the photo-disinfection effects of the two NCQDs are driven by different ROS, resulting from their distinct chemical structures. In contrast to citric acid-derived NCQDs, which generate superoxide anions (O<sub>2</sub><sup>•-</sup>) that cause self-structural changes and significant disinfection deterioration, sucrose-derived NCQDs are a more stable option for photo-disinfection, as they primarily produce singlet oxygen (<sup>1</sup>O<sub>2</sub>), which is effective in killing bacteria while exerting minimal impact on the carbon structure. Sucrose-derived NCQDs were also identified as the primary contributors to photo-disinfection in both powdered and membrane-based composites containing graphene oxide. These results highlight the importance of understanding the underlying mechanisms and considering the stability of different CQDs when evaluating their potential for photo-disinfection applications.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"246 ","pages":"Article 120836"},"PeriodicalIF":11.6,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145120716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 novel biphasic epoxy coating reinforced with composite oil microdroplets for ultra-low friction and wear 一种新型复合油微滴增强双相环氧涂层，具有超低摩擦磨损性能

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-16 DOI: 10.1016/j.carbon.2025.120847

Zhongpan Zhang , Xiaoqiang Fan , Yawen Zhang , Huixian Yang , Guoshuang Hua , Xinrui Li , Yihan Zhang , Zhenbing Cai , Minhao Zhu

{"title":"A novel biphasic epoxy coating reinforced with composite oil microdroplets for ultra-low friction and wear","authors":"Zhongpan Zhang , Xiaoqiang Fan , Yawen Zhang , Huixian Yang , Guoshuang Hua , Xinrui Li , Yihan Zhang , Zhenbing Cai , Minhao Zhu","doi":"10.1016/j.carbon.2025.120847","DOIUrl":"10.1016/j.carbon.2025.120847","url":null,"abstract":"<div><div>Self-lubricating coatings based on the intrinsic properties of solid fillers often encounter numerous challenges. Rationally designed oil-solid biphasic coatings with ultra-low friction and high interfacial compatibility may offer a feasible solution. Herein, oily graphene oxide microdroplets were uniformly dispersed in epoxy resin via a micelle loading-desorption method, creating an oil-solid biphasic coating. The distinctive interfacial and tribological behavior of the biphasic coating is determined and analyzed. The interfacial lubrication state of the biphasic coating is more influenced by the viscosity–pressure effect of oil microdroplets rather than surface elastic deformation. Due to the introduction of modified graphene oxide nanosheets, the induced transition of the lubrication state, and the formation of an oil-based lubricant film, biphasic coating significantly reduced friction and wear, achieving a 92.7 % reduction in the coefficient of friction and a 40.16 % decrease in the wear rate compared to epoxy resin. The biphasic coating with excellent tribological performance proposed in this work shows huge prospects for achieving efficient lubrication (akin to human joints) in engineering components.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120847"},"PeriodicalIF":11.6,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Single-atom FeN4 sites embedded graphene-like carbon as a versatile reinforcing material for electrochemical sensing 单原子FeN4位嵌入石墨烯样碳作为电化学传感的多功能增强材料

IF 11.6 2区材料科学

Carbon Pub Date : 2025-09-15 DOI: 10.1016/j.carbon.2025.120846

Peng Zhao , Jinxin Zuo , Chaowang Huang , Meina Guo , Qiao Hu , Jing Zhang , Xiaolong Chen , Mingdong Hu

{"title":"Single-atom FeN4 sites embedded graphene-like carbon as a versatile reinforcing material for electrochemical sensing","authors":"Peng Zhao , Jinxin Zuo , Chaowang Huang , Meina Guo , Qiao Hu , Jing Zhang , Xiaolong Chen , Mingdong Hu","doi":"10.1016/j.carbon.2025.120846","DOIUrl":"10.1016/j.carbon.2025.120846","url":null,"abstract":"<div><div>Despite significant progress, electrochemical sensors still face some challenges, including the rational design of versatile sensing materials and in-depth elucidation of their sensing mechanisms. In this work, we investigated a kind of bio-inspired material, namely single-atom FeN<sub>4</sub> sites embedded graphene-like carbon (FeSA@GC), as a versatile reinforcing material for electrochemical sensing. By integrating the merits of atomically dispersed active sites with highly conductive carbon matrix, the FeSA@GC exhibited desirable catalytic activity and rapid electron-transfer kinetics. Density functional theory calculations further revealed that the FeN<sub>4</sub> active sites within FeSA@GC play a crucial role in substrate activation and catalytic turnover. As a proof-of-concept application, we developed a novel electrochemical device based on FeSA@GC and its further coupling/hybridization modification, which enabled multiplex detection of physiological biomarkers (uric acid, glucose, and pH). Our research is believed to provide a promising guidance for the rational design of versatile sensing material, and promote the application of electrochemical sensing in biomedical field.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"245 ","pages":"Article 120846"},"PeriodicalIF":11.6,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145099636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

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