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Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

Frontiers of Chemical Science and Engineering 2023年第11期17卷 1623-1648页

作者： Sijia Xing Sixiang Zhai Lei Chen Huabin Yang Zhong-Yong Yuan School of materials Science and Engineering Smart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China Key Laboratory of Advanced Energy materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Direct dehydrogenation with high selectivity and oxidative dehydrogenation with low thermal limit has been regarded as promising methods to solve the increasing demands of light olefins and *** catalysts have shown remarkable performance for these reactions,such as Pt,CrOx,Co,ZrOx,Zn and *** with metal-based catalysts,carbon materials with stable structure,rich pore texture and large surface area,are ideal platforms as the catalysts and the supports for dehydrogenation *** this review,carbon materials applied in direct dehydrogenation and oxidative dehydrogenation reactions including ordered mesoporous carbon,carbon nanodiamond,carbon nanotubes,graphene and activated carbon,are summarized.A general introduction to the dehydrogenation mechanism and active sites of carbon catalysts is briefly presented to provide a deep understanding of the carbon-based materials used in dehydrogenation *** unique structure of each carbon material is presented,and the diversified synthesis methods of carbon catalysts are *** approaches for promoting the catalytic activity of carbon catalysts are elaborated with respect to preparation method optimization,suitable structure design and heteroatom *** regeneration mechanism of carbon-based catalysts is discussed for providing guidance on catalytic performance *** addition,carbon materials as the support of metal-based catalysts contribute to exploiting the excellent catalytic performance of catalysts due to superior structural *** the end,the challenges in current research and strategies for future improvements are proposed.

关键词： carbon materials dehydrogenation active sites mechanism catalytic performance support

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Recent advances in carbon-based materials for electrochemical CO_(2) reduction reaction

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Chinese Chemical Letters 2022年第5期33卷 2270-2280页

作者： Zengqiang Gao Junjun Li Zhicheng Zhang Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of Science&Collaborative Innovation Center of Chemical Science and EngineeringTianjin UniversityTianjin 300072China

The increase of atmospheric CO_(2)concentration has caused many environmental ***-cal CO_(2)reduction reaction(CO_(2)RR)has been considered as a promising strategy to mitigate these *** electrocatalysts with a low overpotential,high Faradaic efficiency,and excellent selectivity are of great significance for the CO_(2)***-based materials including metal-free carbon catalysts and metal-based carbon catalysts have shown great potential in the CO_(2)RR,owing to the tailorable porous structures,abundant natural resources,resistance to acids and bases,high-temperature stability,and en-vironmental *** this review,various carbon materials including graphene,carbon nanotubes,quantum dots,porous carbon,and MOF-derived catalysts,etc.,for the CO_(2)RR have been ***,recent progress in terms of the mechanism and pathway of CO_(2)conversion has been com-prehensively ***,the opportunities and challenges of carbon-based electrocatalysts for the CO_(2)RR are proposed.

关键词： CO_(2)reduction Electrocatalysis carbon materials Chemicals and fuels Single-atom catalysts

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Advanced carbon-based materials for Na,K,and Zn ion hybrid capacitors

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Rare Metals 2023年第3期42卷 719-739页

作者： Jian Zhou Hong-Yu Hu Hong-Qiang Li Zhi-Peng Chen Chang-Zhou Yuan Xiao-Jun He School of Chemistry and Chemical Engineering Anhui University of TechnologyMaanshan 243002China School of Material Science and Engineering University of JinanJinan250022China

Developing electrochemical energy storage devices with high energy and power densities,long cycling life,as well as low cost is of great *** metal-ion capacitors(MICs),commonly consisting of high energy battery-type anodes and high power capacitor-type cathodes,have become a trade-off between batteries and *** efforts have been devoted to searching for high-performance electrode materials due to poor rate capability of anodes,low capacity of cathodes,and interior sluggish kinetic *** materials with large surface area,good electrical conductivity and stability have been considered to be ideal candidates for electrodes of *** this review,the advanced carbon materials directly as cathodes and anodes of MICs are systematically ***,the key structural/chemical factors including the structure engineering,porous characteristics,and heteroatom incorporation for improving electrochemical performance of carbon materials are ***,the challenges and opportunities for future research on carbon materials in MICs are also proposed.

关键词： Metal-ion capacitor(MIC) carbon materials Electrodes Structural/chemical factors Electrochemical performance

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Quantitative analysis of microstructure of carbon materials by HRTEM

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Transactions of Nonferrous Metals Society of China 2006年第S2期 796-803页

作者： YANG Jun-he, CHENG Shu-hui, WANG Xia, ZHANG Zhuo, LIU Xiao-rong, TANG Guo-hua Department of materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235, China School of Chemical Engineering, East China University of Science and Technology, Shanghai 200000, China

The main object of the present research is to make a quantitative evaluation on the microstructure of carbon materials in terms of microcrystal. The digitized images acquired from finely pulverized carbon materials under HRTEM at a high magnification were processed by the image processing software so as to extract the fringes of (002) lattice of graphite crystal from the background image, and an FFT-IFFT filtering operation was performed followed by processes as binarization for the image and skeletonization for the fringes. A set of geometrical parameters including position, length and orientation was set up for every lattice fringe by calculating the binarized image. Then, the above obtained fringe parameters were put into an algorithm, which was especially developed for such fringe images so as to find fringes that could be regarded as those belonged to one single graphite microcrystal. The fringe was subjected sequentially to comparing procedures with every other fringe on aspects as parallelism, relative position and spacing, and the above comparisons were repeated till the last fringe. Eventually, the microcrystal size, its stacking number, and the distribution of the microcrystal in the whole sample, as well as other related structure information of such microcrystal in carbon materials were statistically calculated. Such microstructure information at nanometer level may contribute greatly to the interpretation of the properties of carbon materials and a better correlation with the same macrostructure.

关键词： carbon materials microcrystal digitized images quantitative analysis HRTEM

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High-Strength carbon materials and Elastomers on the Basis of carbon-Silicon Nanocomposites

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Journal of Environmental Science and Engineering(A) 2012年第12期1卷 1346-1355页

作者： Yuriy Sukhamikov Abdurasul Zharmenov Anatoly Savchenko Sandzar Dzhusupov Sergey Lavrukhin The National Center for Mineral Raw materials Complex Processing 67 Almaty 050036 Kazakhstan carbon materials Production Department "Aviauglerod" JSC Moscow 111123 Russia

The processes for obtaining C-SiO2 and C-βSiC nanocomposites from the rice hulls have been studied. On the basis of these composites, some carbon materials and rubber products with the increased physical and mechanical properties have been obtained. The tensile strength of the carbon products with C-SiO2 is 92-96 MPa and with C-βSiC： 112-118 MPa in comparison with 70-80 MPa for standard products from artificial graphite. Nominal strength and resistance to tensile strain of the carbon material with C-SiO2 increase by 15%-20% as compared to the carbon material with carbon black.

关键词： Rice hulls nanocomposites filler for elastomers carbon materials

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Sodium-ion capacitors with superior energy-power performance by using carbon-based materials in both electrodes

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Progress in Natural Science:materials International 2020年第1期30卷 13-19页

作者： Hongwei Zhang Mingxiang Hu Zheng-Hong Huang Feiyu Kang Ruitao Lv State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua University Key Laboratory of Advanced materials (MOE) School of Materials Science and EngineeringTsinghua University

Na-ion capacitors(NICs) are promising energy storage devices in virtue of their merits in combining the high energy densities of secondary batteries and the high power densities of ***,it is still very challenging to achieve a balanced energy-power performance in NIC device due to the kinetic imbalance between the battery-type anode and the capacitive-type *** this work,an NIC device based on carbon materials for both anode and cathode has been ***-prepared(polyimide/graphene oxide)-derived carbon(PIGC) anode material shows excellent rate capability,which can deliver a specific capacity of 110 mAh g-1at high current densities of 5 A *** addition,the N,B co-doped expanded reduced graphite oxide(NBEG)cathode demonstrates a high specific capacitance of 328 F *** to the improved rate capability of PIGC anode and specific capacitance of NBEG cathode,the imbalance on the energy and power densities between anode and cathode is well ***-assembled PIGC//NBEG device can deliver an energy density of 55 W h kg-1even at a high power density of 9500 W *** energy-power properties of PIGC//NBEG are superior to many state-of-the-art NIC devices that using carbon or non-carbon based *** work offers not only a promising device configuration with superior energy-power properties,but also a guidance for the design strategies on electrode materials for high-throughput energy storage systems.

关键词： carbon materials Doping Porous structure Sodium ion capacitors Energy storage

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Research Progress of carbon-Silicone Composite materials

Expert Review of Chinese Chemical

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Expert Review of Chinese Chemical 2024年第2期2卷 1-7页

作者： Beibei Liu Rongjie Kan College of Chemistry and Chemical Engineering Nantong University Shenyang Institute of Chemical Technology

Silicone is a kind of polymer material with high cross-linked structure,which is com-posed by Si-O-Si main *** to the special molecular chain structure,silicone mate-rials are characterized by oxidation resistance,aging resistance,high and low temperature resistance and chemical corrosion ***,silicone materials have process-able properties,simple forming process,good mechanical property,non-toxic and ***,silicone has been widely concerned by researchers at home and *** this paper,the main research progress and application directions of carbon-silicone composite at home and abroad in recent years are reviewed.

关键词： carbon materials grapheme silicone composite materials

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carbon-based interface engineering and architecture design for high-performance lithium metal anodes

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carbon Energy 2024年第1期6卷 207-235页

作者： Na Zhu Yuxiang Yang Yu Li Ying Bai Junfeng Rong Chuan Wu SINOPEC Research Institute of Petroleum Processing Co. Ltd.BeijingChina Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina Yangtze Delta Region Academy of Beijing Institute of Technology JiaxingChina

Metallic lithium(Li)is considered the“Holy Grail”anode material for the nextgeneration of Li batteries with high energy density owing to the extraordinary theoretical specific capacity and the lowest negative electrochemical ***,owing to inhomogeneous Li-ion flux,Li anodes undergo uncontrollable Li deposition,leading to limited power output and practical *** materials and their composites with controllable structures and properties have received extensive attention to guide the homogeneous growth of Li to achieve high-performance Li *** this review,the correlation between the behavior of Li anode and the properties of carbon materials is ***,we review emerging strategies for rationally designing high-performance Li anodes with carbon materials,including interface engineering(stabilizing solid electrolyte interphase layer and other functionalized interfacial layer)and architecture design of host carbon(constructing three-dimension structure,preparing hollow structure,introducing lithiophilic sites,optimizing geometric effects,and compositing with Li).Based on the insights,some prospects on critical challenges and possible future research directions in this field are *** is anticipated that further innovative works on the fundamental chemistry and theoretical research of Li anodes are needed.

关键词： carbon materials dendrites hosts interfacial layers Li metal anodes

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Highly efficient electrosynthesis of H_(2)O_(2)in acidic electrolyte on metal-free heteroatoms co-doped carbon nanosheets and simultaneously promoting Fenton process

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Chinese Chemical Letters 2024年第7期35卷 514-518页

作者： Xiaodan Wang Yingnan Liu Zhibin Liu Zhongjian Li Tao Zhang Yi Cheng Lecheng Lei Bin Yang Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310058China Institute of Zhejiang University-Quzhou Quzhou 324000China Donghai Laboratory Zhoushan 316000China Ningbo Institute of materials Technology&Engineering University of Chinese Academy of SciencesNingbo 315200China School of Biological and Chemical Engineering NingboTech UniversityNingbo 315100China Zhejiang Hengyi Petrochemical Research Institute Co. Ltd.Hangzhou 310058China

Recently electrochemical synthesis of H_(2)O_(2)through oxygen reduction reaction(ORR)via 2e^(-)pathway is considered as a green and on-site ***,it still remains a big challenge for fabricating novel metal-free catalysts under acidic solutions,since it suffers from high overpotential due to the intrinsically week*OOH ***,a co-doped carbon nanosheet(O/N–C)catalyst toward regulating O and N content was synthesized for improving the selectivity and activity of H_(2)O_(2)electrosynthesis *** O/N–C exhibits outstanding 2e-ORR performance with low onset potential of 0.4 V(***)and a selectivity of 92.4%in 0.1 mol/L HClO_(4)*** in situ electrochemical impedance spectroscopy(EIS)tests reveals that the N incorporation contributes to the fast ORR *** density functional theory(DFT)calculations demonstrate that the binding strength of*OOH was optimized by the co-doping of oxygen and nitrogen at certain content,and the O/N–C–COOH site exhibits a lower theoretical overpotential for H_(2)O_(2)formation than O–C–COOH ***,the promoted kinetics for typical organic dye degradation in simultaneous electron-Fenton process on O/N–C catalyst was demonstrated particularly for broadening its environmental application.

关键词： Oxygen reduction Metal-free catalyst H_(2)O_(2)electrosynthesis N doping carbon materials

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Nanopore design of sulfur doped hollow carbon nanospheres for superior potassium-ion battery anodes

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Rare Metals 2024年第5期43卷 2103-2114页

作者： Zhen-Dong Liu Hui-Yan Feng Yu-Chen Wang Fei Wang Yue Liu Jian-Xiao Yang Yue Gu Jun Tan Chong Ye Cheng-Zhi Zhang Ji Hua Laboratory Foshan 528000China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Hunan Province Key Laboratory for Advanced carbon materials and Applied Technology College of Materials Science and EngineeringHunan UniversityChangsha 410082China

Sulfur doped carbonaceous materials are promising anodes for potassium-ion batteries because of their ability to bridge active sites and induce C/S electron coupling,resulting in increased ion storage capacitance However,the large potassium ions could cause significant volume expansion and structure collapse during operation in sulfur doped carbonaceous anodes,which lead to rapidly capacity sacrifice during long-term *** design for anchoring sulfur atom in carbon skeleton is a novel way to alleviate the structure collapse and maintain the cycling ***,this study developed a controlled nanopore and sulfur doped carbon sphere structure(S-NPHCSs).In potassium-ion batteries S-NPHCSs anode demonstrated exceptional performance with a high reversible capacity of 247 mAh·g^(–1)after 50 cycles at 0.2 A·g^(–1)and delivered a long cycle stability of 600 cycles at a high current density of 1.0 A·g^(–1).Interconnected nanopores and doped sulfur structure not only expand the accumulation space and offer ample active sites for diffusion and adsorption of potassium ions,but also build stable channels through nanopore structure to ensure the cyclic *** finding provides a fundamental theory for designing nanopore structures and introducing sulfur doped carbonaceous materials to enhance capacitive potassium storage and long cycle stability.

关键词： Nanopore carbon materials Sulfur doping Anode Potassium-ionbatteries

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