Carbon最新文献_第3页

Electrotunable superlubricity of two-dimensional ZIF-8 二维 ZIF-8 的电可调超润滑性

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-06 DOI: 10.1016/j.carbon.2024.119803

Yuxin Li , Lei Liu , Aisheng Song , Kunpeng Wang , Yuhong Liu

{"title":"Electrotunable superlubricity of two-dimensional ZIF-8","authors":"Yuxin Li , Lei Liu , Aisheng Song , Kunpeng Wang , Yuhong Liu","doi":"10.1016/j.carbon.2024.119803","DOIUrl":"10.1016/j.carbon.2024.119803","url":null,"abstract":"<div><div>Electric field control can actively, dynamically, and repeatably influence the interface friction behavior. The unique properties of two-dimensional (2D) ZIF-8 make it a promising lubricating material for electromechanical devices. The study on the electrotunable superlubricity of 2D ZIF-8 is carried out under longitudinal and transverse electric fields respectively, resulting in an order of magnitude variation in friction coefficient (μ: 0.0037–0.0124). Through the experiments and simulation, the regulation mechanism of electric fields on the lubricating properties of 2D ZIF-8 is attributed to the coupling effect of adhesion regulation and out-of-plane deformation regulation: The weakening of anchoring effect reduces the adhesion between probe and 2D ZIF-8; the tight binding of interfacial charge under longitudinal electric field as well as the increase in surface stiffness caused by lattice tension under transverse electric field, both restrain the out-of-plane deformation during friction. The electrotunable superlubricity of 2D ZIF-8 helps achieve rapid and flexible adjustment of the friction interface in electro-mechanical systems under charged conditions, illuminating the future development prospects for intelligent control.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655827","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

Tailoring hydrogen adsorption via charge transfer at bimetallic Cr0.48Ru0.52 alloy nanoparticles decorated on carbon nanofiber for enhanced hydrogen evolution catalysis 通过碳纳米纤维上装饰的双金属 Cr0.48Ru0.52 合金纳米粒子上的电荷转移定制氢吸附，以增强氢气进化催化作用

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-06 DOI: 10.1016/j.carbon.2024.119797

Dasol Jin , Jiwon Kim , Ramesh Kumar Chitumalla , Yeji Yim , In Young Kim , Joonkyung Jang , Myung Hwa Kim

{"title":"Tailoring hydrogen adsorption via charge transfer at bimetallic Cr0.48Ru0.52 alloy nanoparticles decorated on carbon nanofiber for enhanced hydrogen evolution catalysis","authors":"Dasol Jin , Jiwon Kim , Ramesh Kumar Chitumalla , Yeji Yim , In Young Kim , Joonkyung Jang , Myung Hwa Kim","doi":"10.1016/j.carbon.2024.119797","DOIUrl":"10.1016/j.carbon.2024.119797","url":null,"abstract":"<div><div>Designing and synthesizing highly efficient and stable electrocatalysts for the hydrogen evolution reaction (HER) is crucial for the practical and large-scale application of hydrogen sources. Recent research has focused on tuning the electronic structure of electrocatalysts to achieve optimal HER activity, with particular emphasis on interfacial engineering to induce electron transfer and optimize HER kinetics. In this study, as part of research into heterointerface engineering, bimetallic Cr<sub>0.48</sub>Ru<sub>0.52</sub> alloy nanoparticles decorated on carbon nanofibers (Cr<sub>0.48</sub>Ru<sub>0.52</sub>/CNFs) were fabricated through a simple electrospinning and post-calcination process to serve as an efficient alkaline HER catalyst. The Cr<sub>0.48</sub>Ru<sub>0.52</sub>/CNFs demonstrated exceptional electrocatalytic HER performance, with an overpotential of only 13 mV at −10 mA cm<sup>−2</sup> and a Tafel slope of 60.8 mV dec<sup>−1</sup>, indicating high catalytic activity compared to commercial benchmark catalysts (<em>i.e.</em>, Ru/C and Pt/C). First-principles density functional theory calculations support these results, revealing that Cr<sub>0.48</sub>Ru<sub>0.52</sub> balances proton reduction (Volmer step) and H∗ desorption (Tafel/Heyrovsky step) processes during electrocatalysis, as evidenced by the near-zero hydrogen adsorption (ΔG<sub>H∗</sub>) value (<em>ca.</em> −0.11 eV). Therefore, this study highlights that Cr<sub>0.48</sub>Ru<sub>0.52</sub>/CNFs, with noble Ru comprising only half of the total metal content, can promote optimal HER kinetics under alkaline condition.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656208","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

Multifunctional molecular precursor with tunable nano-microarchitecture enables exceptional electromagnetic waves absorption 具有可调纳米微结构的多功能分子前体可实现卓越的电磁波吸收能力

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-06 DOI: 10.1016/j.carbon.2024.119804

Menghao Chen , Bo Liang , Xian He , Wei Tan , Hang Xiao , Wenjie Yang , Jianghuai Hu , Ke Zeng , Gang Yang

{"title":"Multifunctional molecular precursor with tunable nano-microarchitecture enables exceptional electromagnetic waves absorption","authors":"Menghao Chen , Bo Liang , Xian He , Wei Tan , Hang Xiao , Wenjie Yang , Jianghuai Hu , Ke Zeng , Gang Yang","doi":"10.1016/j.carbon.2024.119804","DOIUrl":"10.1016/j.carbon.2024.119804","url":null,"abstract":"<div><div>Multi-component carbon is a promising candidate for electromagnetic wave (EMW) absorption materials. However, complex and non-green preparation process with low atomic utilization efficiency compromises the merits of carbon materials. Additionally, enhancing the electromagnetic wave absorption (EMWA) is highly desirable. To face the challenge, a multifunctional molecular precursor (DQSDCI) has been developed, characterized by high atom utilization efficiency (high char yield), abundant in-situ nitrogen doping, multi-sites for composite of nano-materials (e.g. CNT) or metal ion (e.g. iron) and green preparation (water solubility). The multi-component carbons derived from DQSDCI, featuring adjustable nanostructures (nanoribbons or nanosheets) and modifiable porosity, demonstrate outstanding EMWA. The multicomponent carbon of DQSDCI, iron and CNT (DQSDCI-Fe-CNT-700) demonstrated a minimum reflection loss (RL<sub>min</sub>) of −69.57 dB and a maximum effective absorption bandwidth (EAB<sub>max</sub>) of 5.7 GHz at about 2 mm thickness, covering a wide frequency range (4–18 GHz) by controlling the thickness between 1 and 5 mm. Moreover, simulation results indicated that the derived nanosheet is very promising application for aircraft stealth in a monostatic radar system. Abundant in-situ N doping, uniform distribution of MWCNT and ferromagnetic nanoparticles, hierarchical pore structures and various heterogeneous interfaces can synergistically improve the EMW attenuation ability by forming optimal impedance matching and multi-polarization loss.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656206","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

Disordering of graphene nanoplatelet, carbon nanotube and C60 fullerene under shear stress 石墨烯纳米板、碳纳米管和 C60 富勒烯在剪切应力作用下的无序化

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-05 DOI: 10.1016/j.carbon.2024.119802

Yi Yang , Mingzhi Yuan , Chao Qian , Chengyu Li , Yanping Yang , Xueyan Du , Hongliang Dong , Bin Chen

{"title":"Disordering of graphene nanoplatelet, carbon nanotube and C60 fullerene under shear stress","authors":"Yi Yang , Mingzhi Yuan , Chao Qian , Chengyu Li , Yanping Yang , Xueyan Du , Hongliang Dong , Bin Chen","doi":"10.1016/j.carbon.2024.119802","DOIUrl":"10.1016/j.carbon.2024.119802","url":null,"abstract":"<div><div>Carbon nanomaterials typically possess excellent mechanical properties, enabling them to withstand extreme physical environments. However, the response of different nanostructures under shear stress has not yet been experimentally investigated. In this study, we employ the rotational diamond anvil cell to apply pressure and shear to three carbon nanomaterials–graphene nanoplatelet, multi-wall carbon nanotube and C<sub>60</sub> fullerene–and investigate their structure evolution using Raman spectroscopy and electron microscopy. Detailed analysis revealed that the materials exhibit distinct changes in their intrinsic structure. Specifically, defects and lattice distortion were introduced into graphene nanoplatelet, carbon nanotube broke down into curly graphene fragments, and C<sub>60</sub> completely transformed into amorphous carbon. The most compelling discovery is the remarkably high degree of amorphization process in C<sub>60</sub> at room temperature, accompanied by an sp<sup>3</sup> hybridization fraction reaching 20.84 %. Our results underscore the profound impact of shear stress on the stability of carbon-based nanomaterials, provide new insights into their mechanical behavior and potential limitation in practical application, and offer a strategy for regulating these materials which have the strongest covalent bonds.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656210","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

Machine learning framework for selective and sensitive metal ion sensing with nitrogen-doped graphene quantum dots heterostructure 利用掺氮石墨烯量子点异质结构实现选择性灵敏金属离子传感的机器学习框架

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-05 DOI: 10.1016/j.carbon.2024.119800

Ruma Das , Abhirup Paria , P.K. Giri

{"title":"Machine learning framework for selective and sensitive metal ion sensing with nitrogen-doped graphene quantum dots heterostructure","authors":"Ruma Das , Abhirup Paria , P.K. Giri","doi":"10.1016/j.carbon.2024.119800","DOIUrl":"10.1016/j.carbon.2024.119800","url":null,"abstract":"<div><div>This study introduces a machine learning (ML) framework to optimize photodetector performance for sensor applications. Using the data from the fabricated photodetector with the heterostructure of nitrogen-doped graphene quantum dot and gold nanoparticles (Au@N-GQDs), various supervised ML models (more than 20 models) are trained and tested for the selection and refinement of the most effective algorithm for our work. Depending on the best-performed ML model, the optimized working wavelength of the photodetector is found for the detection of metal ions. Remarkably, the ML-based sensor shows a high level of selectivity and sensitivity in nM level towards Fe<sup>3+</sup> ions in Brahmaputra river water. A strong alignment between model predictions and experimental outcomes validates the efficacy of the proposed ML-based framework. Moreover, data visualization techniques such as heatmaps, classification algorithms, and confusion matrices are introduced to identify the trends in the database. The mechanistic insight of the sensor performance towards Fe<sup>3+</sup> ion sensing is further explained with heatmap analysis and experimental verification, which emphasizes the role of photo-induced charge transfer and Fe–O bond formation between metal ions and Au@N-GQDs due to the high electron affinity of Fe<sup>3+</sup> ions.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655825","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

Direct graphene growth on low-alloy and mild steel surfaces controlled by carbon solubility and surface microstructural transformations during chemical vapor deposition 在化学气相沉积过程中，低合金钢和低碳钢表面石墨烯的直接生长受碳溶解度和表面微结构转变的控制

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-05 DOI: 10.1016/j.carbon.2024.119801

Kaleb Hood, Nam Nguyen, Sebastian Lara, Adan Velasquez, Samuel Olson, Yi Xia, Jun Jiao

{"title":"Direct graphene growth on low-alloy and mild steel surfaces controlled by carbon solubility and surface microstructural transformations during chemical vapor deposition","authors":"Kaleb Hood, Nam Nguyen, Sebastian Lara, Adan Velasquez, Samuel Olson, Yi Xia, Jun Jiao","doi":"10.1016/j.carbon.2024.119801","DOIUrl":"10.1016/j.carbon.2024.119801","url":null,"abstract":"<div><div>This study demonstrates for the first time, graphene grown directly on the iron-rich surfaces of bulk 8620 low-alloy and 1018 mild steel by chemical vapor deposition, a key step toward developing thin graphene coatings with strong graphene-steel bonding. Low growth temperatures of 660 °C–680 °C, were used to manipulate the steel's carbon solubility, confining carbon diffusion and microstructural transformations to the surface regions, with the bulk relatively unchanged. For 1018, a growth temperature of 680 °C resulted in a multilayer graphene coating with 80 % coverage. The alloying elements in 8620 improved graphene formation by influencing the surface microstructure transformations at these growth temperatures, with graphene coverage up to 95 %. The surface microstructure for 8620 affected graphene formation, seen in growths at 660 °C where a few-layer graphene coating formed from a cementite surface layer, and for growths at 680 °C where multi-layer graphene covered a pearlite dominant surface microstructure. Contact angle measurements confirmed the hydrophobicity of the graphene coating and electrochemical testing by potentiodynamic polarization and electrochemical impedance spectroscopy confirmed the 101 mV improvement to corrosion potential and an increase in impedance up to 18.23 kΩ. These detailed results regarding the direct growth of graphene as a coating layer on highly oxidation-sensitive steel surfaces suggest that this process is achievable through manipulating carbon solubility at the steel's surface by controlling temperature, alloy composition and surface microstructure transformations. These methods could be leveraged in developing protective graphene coatings for various iron-based alloys.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655830","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

Electrochemical reduction and recovery of trace gold(I) from environmentally friendly thiosulfate leaching solutions using carbon electrodes 利用碳电极从环境友好型硫代硫酸盐浸出液中电化学还原和回收痕量金（I）

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-04 DOI: 10.1016/j.carbon.2024.119799

Qizheng Weng , Weiquan Zhan , Xuan Zhang , Shaoxian Song , Zhenlong Zeng , Hnin May Lwin , José Luis Arauz-Lara , Feifei Jia

{"title":"Electrochemical reduction and recovery of trace gold(I) from environmentally friendly thiosulfate leaching solutions using carbon electrodes","authors":"Qizheng Weng , Weiquan Zhan , Xuan Zhang , Shaoxian Song , Zhenlong Zeng , Hnin May Lwin , José Luis Arauz-Lara , Feifei Jia","doi":"10.1016/j.carbon.2024.119799","DOIUrl":"10.1016/j.carbon.2024.119799","url":null,"abstract":"<div><div>Efficient recovery of Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3−</sup> at low concentrations is a key challenge for the development of environmentally friendly, cyanide-free thiosulfate leaching methods in industry. In the study, carbon materials including activated carbon (AC), graphite, and graphene were used as electrodes for electrochemical reduction and recovery (electro reduction-recovery) of trace gold(I) from thiosulfate leaching solutions (Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3−</sup>). The results demonstrated that Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3−</sup> could be efficiently recovered in the form of Au<sup>0</sup> with nearly 100 % recovery from both simulated and actual gold ore leaching solutions, significantly simplifying traditional recovery and reduction processes. Even in the presence of impurities such as cations and S<sub>2</sub>O<sub>3</sub><sup>2−</sup>, recovery remained high, around 90 %. Among the parameters studied, applied voltage was the most critical for optimizing recovery, as it enhanced ion migration and significantly improved gold reduction. The study investigated the relationship between the intrinsic properties of carbon materials and their electrochemical reduction and recovery capabilities. Rich porosity of carbon materials promoted interactions with Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3−</sup>, enhancing the electric double layer capacity, while π–π∗ satellite transitions played a dominant role in the charge transfer, thereby improving the reduction rate. This research offers new insights of the mechanisms behind the recovery of trace Au(S<sub>2</sub>O<sub>3</sub>)<sub>2</sub><sup>3−</sup> from thiosulfate leaching solutions through carbon electrodes.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655828","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

Construction of NiCo2O4/NiCoO2 co-embedded porous bio-carbon with rich heterogeneous interfaces for excellent bacteriostatic microwave radiation protection 构建具有丰富异质界面的 NiCo2O4/NiCoO2 共嵌多孔生物碳，实现优异的微波辐射抑菌防护性能

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-04 DOI: 10.1016/j.carbon.2024.119798

Ting Hu , Di Lan , Jian Wang , Xiaozhong Zhong , Guixian Bu , Pengfei Yin

{"title":"Construction of NiCo2O4/NiCoO2 co-embedded porous bio-carbon with rich heterogeneous interfaces for excellent bacteriostatic microwave radiation protection","authors":"Ting Hu , Di Lan , Jian Wang , Xiaozhong Zhong , Guixian Bu , Pengfei Yin","doi":"10.1016/j.carbon.2024.119798","DOIUrl":"10.1016/j.carbon.2024.119798","url":null,"abstract":"<div><div>To attain the stable protection against electromagnetic radiation pollution in complex bacterial environment, herein the NiCo<sub>2</sub>O<sub>4</sub> and NiCoO<sub>2</sub> co-embedded porous bio-carbon (PBC) with outstanding microwave absorption and anti-bacterial ability was successfully obtained via facile carbonization and immersion-annealing route. The component and microstructure of composites are both tightly affected by the synthetic temperature, which also influences the oxygen vacancy content and defect density within them. The strong interface polarizations from plentiful heterogeneous interfaces and dipole polarizations generated by defects and vacancies contribute greatly to the dielectric absorption, while the eddy-current loss and magnetic resonances have a certain effect as well. Under the matched impedance from magnetic-dielectric balance, the optimized absorption strength of prepared composite achieves −38.2 dB at 2.0 mm thickness with broad absorbing bandwidth of 7.01 GHz for only 2.31 mm. Moreover, the plentiful oxygen vacancies induced reactive oxygen species (ROS) together with heavy metal ions from nickel-cobalt ferrites can suppress the reproduction of Gram negative <em>Escherichia coli</em> (<em>E. coli</em>) and Gram positive <em>Staphylococcus aureus</em> (<em>S. aureus</em>) with anti-bacterial rates of 92.4 % and 93.2 %, respectively. The paper offers a novel insight to design dual-functional microwave absorber with excellent bacteriostatic performance for long-term using in complex bacterial environment.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655824","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

Pulsed plasma vapour deposition of carbon materials: Advantages and challenges 碳材料的脉冲等离子气相沉积：优势与挑战

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-02 DOI: 10.1016/j.carbon.2024.119772

Carles Corbella , Asim Aijaz , Tomas Kubart , Li Lin , Sabine Portal , Michael Keidar

{"title":"Pulsed plasma vapour deposition of carbon materials: Advantages and challenges","authors":"Carles Corbella , Asim Aijaz , Tomas Kubart , Li Lin , Sabine Portal , Michael Keidar","doi":"10.1016/j.carbon.2024.119772","DOIUrl":"10.1016/j.carbon.2024.119772","url":null,"abstract":"<div><div>Here, we review the benefits of low-temperature pulsed plasma technology on the synthesis of amorphous and diamond-like carbon (DLC) films, nanocrystalline diamond (NCD) films, and carbon nanomaterials, such as graphene and carbon nanotubes. Physical and chemical vapour depositions of strong carbon materials are dominated in industry by magnetron sputtering and vacuum arc. At research stage, carbon deposition can be accomplished by many techniques involving pulsed discharges in vacuum or atmospheric pressure. Either by pulsed-DC glow discharge, high-power impulse magnetron sputtering (HiPIMS), filtered cathodic vacuum arc (FCVA), or anodic arc discharge, the structural and mechanical properties of carbon-based samples can be tailored by adequately adjusting “plasma knobs”, namely peak power, pulse duration, and duty cycle. Milestones such as tuning surface properties via ion bombardment, enhancing plasma ionisation through energetic pulses, and stabilization of plasma processes for industrial implementation, are discussed. Also, pulsed plasma technology arises as an excellent laboratory to train machine learning algorithms thanks to the large variety of material properties. In conclusion, nonequilibrium plasmas operated with pulsed power provide exciting opportunities for (1) fabrication of new carbon architectures with desired functional properties for many applications, and (2) advancing our knowledge on carbon plasma chemistry via artificial intelligence resources.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655833","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

Shape-tunable vanadium selenide/reduced graphene oxide composites with excellent electromagnetic wave absorption performance 具有优异电磁波吸收性能的形状可调硒化钒/还原氧化石墨烯复合材料

IF 10.5 2区材料科学

Carbon Pub Date : 2024-11-02 DOI: 10.1016/j.carbon.2024.119795

Guansheng Ma , Yuhao Liu , Kaili Zhang , Guangyu Qin , Yuefeng Yan , Tao Zhang , Xiaoxiao Huang

{"title":"Shape-tunable vanadium selenide/reduced graphene oxide composites with excellent electromagnetic wave absorption performance","authors":"Guansheng Ma , Yuhao Liu , Kaili Zhang , Guangyu Qin , Yuefeng Yan , Tao Zhang , Xiaoxiao Huang","doi":"10.1016/j.carbon.2024.119795","DOIUrl":"10.1016/j.carbon.2024.119795","url":null,"abstract":"<div><div>The tunable energy gap and distinctive layered configuration of transition metal dichalcogenides (TMDs) has sparked considerable interest in their capabilities for electromagnetic wave absorption. As a significant TMD, vanadium selenide (VSe<sub>2</sub>) is characterized by a superior electrical conductivity (1 × 10<sup>−3</sup> S/m) and an expanded interlayer distance, which are advantageous for electromagnetic wave absorption performance. Nevertheless, the current research on VSe<sub>2</sub> in electromagnetic wave absorption is relatively limited. In this study, flower-like VSe<sub>2</sub> and shape-tunable VSe<sub>2</sub>/reduced graphene oxide (rGO) composites were fabricated via a simple solvothermal method, and the effect of their morphology on electromagnetic wave absorption performances was investigated. The VSe<sub>2</sub>/rGO composites exhibited remarkable electromagnetic wave absorption properties at a thickness of 2.01 mm, with a reflection loss value (RL) of up to −79.50 dB, and an effective absorption bandwidth (EAB) of 5.2 GHz (1.45 mm). This research has identified a novel approach to the study of TMDs in the field of electromagnetic wave absorption.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655840","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