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SSRN 2024年

作者： Wang, Shuai Yin, Jian Xiefeng, Minyu Tang, Lei Xiong, Xiang Zhang, Hongbo Wen, Qingbo Ma, Denghao Tianshan, Jinglv Zuo, Jinglv State Key Laboratory of Powder Metallurgy Central South University Changsha410083 China Aerospace Research Institute of Materials & Processing Technology Key Laboratory of Advanced Functional Composite Materials Technology Beijing100076 China Hunan Boyun New Materials CO.LTD Changsha410083 China

To satisfy the requirements for the new generation solid rocket motors on highly ablation-resistant throat materials, an idea of merging passive and active thermal protection was applied to modify carbon/carbon composites. In this study, SiC and ZrC were used as passive thermal protection materials along with the active thermal protection material Cu to modify the C/C composites. C/C-SiC-ZrC-Cu composites were prepared by two-step reactive melt infiltration, which involved the infiltration of Si/Zr followed by Cu/Ti. The Cu content of the C/C-SiC-ZrC composites was controlled by controlling the open porosity of the porous C/C-SiC-ZrC composites. Microstructure, composition and ablation resistance of the C/C-SiC-ZrC-Cu composites were investigated. The results showed that the composites with high Cu content and density exhibited excellent short-term ablation resistance under the 42kW plasma flame, with a negative linear ablation rate after 20s of ablation. The active heat dissipation of Cu during the ablation process results in a significant reduction of the thermal response temperature on the composite surface. Moreover, the generated Si-Ti-Zr-O layer could form an effective barrier to protect the matrix. © 2024, The Authors. All rights reserved.

关键词： Microstructure

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Ag-Decorated Pp Nonwoven for Excellent Catalytic Reduction of 4-Nitrophenol and Antibacterial Study

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SSRN 2023年

作者： Xiao, Shili Cheng, Hongbin Han, Niudong Bai, Zhikui Li, Zhujun Xu, Weilin School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan430200 China Key Laboratory of Eco-textiles Ministry of Education Jiangnan University Wuxi214112 China College of Textiles Guangdong Polytechnic Guangzhou528041 China

Silver particles have been frequently coated on the surface of substrates with the assistance of polydopamine due to their important catalytic and bacterial properties. However, the polydopamine layer was not compact and the resulted particles on the substrates were easy to leak during the application process, especially in the aqueous environment. For mediating this, we coated Ag particles on the surface of polypropylene (PP) nonwoven fabric by codeposition of catechol and polyethyleneimine, with subsequent crosslinking by glutaraldehyde. The formation of Ag particles on PP nonwoven fabric surface was systematically characterized using SEM, EDS and elemental mapping, TEM, FTIR, XRD and TG. Batch experiment showed that Ag@PP nonwoven fabric could effectively degrade the model pollutant 4-nitrophenol in the presence of reduction agent NaBH4 with 100% degradation efficiency. The adsorption isotherm was assessed and displayed that the sorption of 4-nitrophenol on reactive Ag@PP nonwoven fabric followed the Freundlich model. The Ag@PP nonwoven fabric was easy to be recycled and could maintained 100% degradation efficiency after six cycles. The degradation process was monitored using HPLC/MS and the possible degradation mechanism was proposed. In addition, the Ag@PP nonwoven fabric showed excellent antibacterial activity against E. coli. Overall, the material fabricated in this work would be a reusable catalyst for water purification and disinfection. © 2023, The Authors. All rights reserved.

关键词： Efficiency

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Two-Dimensional Heterostructure Nifep@Feooh Nanosheets Supported by Nickel Foam as High-Performance Oer Electrocatalyst

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SSRN 2023年

作者： Jiang, Zhigang Wang, Kuikui Chen, Mengtian Hou, Qinglong Wang, Chen Yang, Shuhan Liu, Haizhen Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Qingdao University Qingdao266071 China MOE Key Laboratory of New Processing Technology for Non-ferrous Metals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Guangxi University Guangxi Nanning530004 China

Constructing heterostructure is an efficient strategy to develop high-performance electrocatalysts. Herein, two-dimensional heterostructure NiFeP@FeOOH nanosheets supported by nickel foam are equipped by hydrothermal-phosphorization-electrodeposition processes. The findings indicate that in 1.0 M KOH alkaline solution, NiFeP@FeOOH/NF showed an OER overpotential of 235 mV at 100 mA cm-2, a Tafel slope of 75.85 mV dec-1 and worked stably at 50 mA cm-2 for 80 h. The synthesis of self-supporting heterostructure NiFeP@FeOOH nanosheets on the NF can increase the electron transfer rate, increase the specific surface region, and boost the rate at which produced bubbles are released from the electrode. Additionally, the incorporation of FeOOH into NiFeP nanosheets can provide sufficient active sites for the reaction, favor the form of intermediates containing oxygen (hydroxyl oxides), and promote water splitting. The NiFeP@FeOOH/NF electrocatalytic activity is significantly improved. This research proves the importance of constructing heterostructure and introducing FeOOH are of great significance to the study of the properties of OER electrocatalysts. © 2023, The Authors. All rights reserved.

关键词： Nanosheets

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High-efficiency electrocatalytic NO reduction to NH_(3) by nanoporous VN

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Nano Research Energy 2022年第2期1卷 201-207页

作者： Defeng Qi Fang Lv Tianran Wei Mengmeng Jin Ge Meng Shusheng Zhang Qian Liu Wenxian Liu Dui Ma Mohamed SHamdy Jun Luo Xijun Liu MOE Key Laboratory of New Processing Technology for Non-Ferrous Metals and Materials and Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured MaterialsSchool of ResourceEnvironments and MaterialsGuangxi UniversityNanning 530004China Institute for New Energy Materials and Low-Carbon Technologies Tianjin Key Lab for Photoelectric Materials&DevicesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China College of Chemistry Zhengzhou UniversityZhengzhou 450000China Institute for Advanced Study Chengdu UniversityChengdu 610106China College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014China Catalysis Research Group(CRG) Department of ChemistryCollege of ScienceKing Khalid UniversityP.O.Box 900461413 AbhaSaudi Arabia

Electrocatalytic NO reduction reaction to generate NH_(3)under ambient conditions offers an attractive alternative to the energy-extensive Haber-Bosch route;however,the challenge still lies in the development of cost-effective and high-performance ***,nanoporous VN film is first designed as a highly selective and stable electrocatalyst for catalyzing reduction of NO to NH_(3)with a maximal Faradaic efficiency of 85%and a peak yield rate of 1.05×10^(-7)mol·cm^(-2)·s^(-1)(corresponding to 5,140.8mg·h^(-1)·mg_(cat).^(-1))at-0.6 V *** hydrogen electrode in acid ***,this catalyst maintains an excellent activity with negligible current density and NH_(3)yield rate decays over 40 ***,as a proof-of-concept of Zn-NO battery,it delivers a high power density of 2.0 mW·cm^(-2)and a large NH_(3)yield rate of 0.22×10^(-7)mol·cm^(-2)·s^(-1)(corresponding to 1,077.1mg·h^(-1)·mg_(cat).^(-1)),both of which are comparable to the best-reported *** analyses confirm that the VN surface favors the activation and hydrogenation of NO by suppressing the hydrogen *** work highlights that the electrochemical NO reduction is an eco-friendly and energy-efficient strategy to produce NH_(3).

关键词： NH_(3)electrosynthesis green route nanoporous VN NO reduction reaction high-performance

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Sintering, high-temperature stability, and thermal conductivity of (Zr, Nb, Hf, Ta)(C, N) high-entropy carbonitrides

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Ceramics International 2025年

作者： Bai, Yang Liang, Yuxin Bi, Juan Cui, Baoning Lu, Zhaopeng Wang, Huangxuan You, Xixi Li, Bangsheng School of Materials Science and Engineering Harbin Institute of Technology Harbin150001 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of Technology Harbin150001 China

High-entropy carbonitrides (HECNs), a new class of high-performance ceramics, hold great potential for high-temperature structural materials and thermal protection systems due to their excellent thermal stability and properties. For its better application, it is important to optimize the sintering temperature of HECNs and deeply investigate its thermal conductivity behavior. This study systematically investigates the thermodynamic stability, formation ability, and thermal properties of (ZrHfNbTa)CxN1-x through first-principles calculations and experimental validation. Thermodynamic calculations reveal that nitrogen incorporation reduces the sintering temperature required to achieve a stable high-entropy solid solution. Experimental validation by spark plasma sintering (SPS) shows that the sintering temperature can be reduced from 1950 °C to 1700 °C. Ab initio molecular dynamics (AIMD) simulations demonstrate that HECNs retain structural integrity at 1773 K. Thermal conductivity tests show an increase with temperature, but a decrease with higher nitrogen content, which is mainly caused by the increased scattering of phonons resulting from lattice distortions. The Debye-Callaway model fitting further elucidates the underlying thermal conductivity mechanisms. In summary, nitrogen incorporation enhances the thermodynamic stability and reduces thermal conductivity of HECN ceramics, providing valuable theoretical and experimental support for their application in high-temperature structural materials and thermal protection systems. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Carbon nitride

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Waste cotton fabric derived porous carbon containing Fe_(3)O_(4)/NiS nanoparticles for electrocatalytic oxygen evolution

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Journal of materials Science & technology 2020年第24期59卷 92-99页

作者： Shan Jiang Hao Shao Genyang Cao Han Li Weilin Xu Jingliang Li Jian Fang Xungai Wang Deakin University Institute for Frontier MaterialsGeelongVIC3216Australia State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan430200China College for Textile and Clothing Engineering Soochow UniversitySuzhouJiangsu215123China

Developing low-cost,active and durable electrocatalysts for oxygen evolution reaction(OER)is an urgent task for the applications such as water splitting and rechargeable metal-air ***,this work reports the fabrication of a metal and hetero atom co-doped fibrous carbon structure derived from cotton textile wastes and its use as an efficient OER *** free-standing fibrous carbon structure,fabricated with a simple two-step carbonization process,has a high specific surface area of 1796 m^2/g and a uniform distribution of Fe_(3)O_(4)/NiS nanoparticles(Fe_(3)O_(4)/NiS@CC).The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 mV at the current density of 10 mA/cm^2in a 1.0 M KOH solution,which even surpass commercial Ru O_(2)***,this ternary catalyst shows remarkable long-term stability without current density loss after continuous operation for 26 *** can be believed that the outstanding OER performance is attributed to the synergistic effect between the iron oxides and nickel sulphides,as well as the micro-meso porous carbon *** study demonstrates a new strategy to use conventional textile materials to prepare highly efficient electrocatalysts;it also provides a simple approach to turn textile waste into valuable products.

关键词： Waste cotton Porous carbon OER electrocatalyst Iron oxides Nickel sulphides

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Topological surface states in quasi-two-dimensional magnetic kagome metal EuTi_(3)Bi_(4)

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Science Bulletin 2024年第20期69卷 3192-3196页

作者： Zhicheng Jiang Tongrui Li Jian Yuan Zhengtai Liu Zhipeng Cao Soohyun Cho Mingfang Shu Yichen Yang Zhikai Li Jiayu Liu Jianyang Ding Zhonghao Liu Jishan Liu Jie Ma Zhe Sun Xiangang Wan Yanfeng Guo Dawei Shen Donglai Feng National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China e5 National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China f 6Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education) Shenyang National Laboratory for Materials ScienceSchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China g7 Institute of High-Pressure Physics and School of Physical Science and Technology Ningbo UniversityNingbo 315211China h 8ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China i9New Cornerstone Science Laboratory University of Science and Technology of ChinaHefei 230026China j 10Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China k 11National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of SciencesShanghai 200050China

In solids,the reservation of symmetries defines the types of topological invariants that classify various topological quantum materials[1–3].Among them,the time-reversal symmetry(TRS)is the most fundamental,which plays key role in topological helical edge or surface ***,breaking TRS in topological materials typically gives rise to unexpected exotic states,such as magnetic Weyl semimetals,quantum anomalous Hall insulators,and axion insulators.

关键词： topological quantum magnetic

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Intrinsic Mechanisms of Morphological Engineering and Carbon Doping for Improved Photocatalysis of 2D/2D Carbon Nitride Van Der Waals Heterojunction

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Energy & Environmental materials 2023年第3期6卷 96-106页

作者： Jinqiang Zhang Xiaoli Zhao Lin Chen Shuli Li Haijun Chen Yuezhao Zhu Shuaijun Wang Yang Liu Huayang Zhang Xiaoguang Duan Mingbo Wu Shaobin Wang Hongqi Sun School of Engineering Edith Cowan University270 Joondalup DriveJoondalupWA 6027Australia College of Chemical Engineering China University of Petroleum(East China) Qingdao 266580China Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology School of Mechanical and Power EngineeringNanjing Tech UniversityNanjing 211816China Center for Integrated Nanostructure Physics Institute for Basic Science(IBS)Sungkyunkwan UniversitySuwon 16419Republic of Korea School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide SA 5005Australia State Key Laboratory of Heavy Oil ProcessingInstitute of New EnergyCollege of Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China

Van der Waals(VDW)heterojunctions in a 2D/2D contact provide the highest area for the separation and transfer of charge *** this work,a top-down strategy with a gas erosion process was employed to fabricate a 2D/2D carbon nitride VDW heterojunction in carbon nitride(g-C_(3)N_(4))with carbon-rich carbon *** created 2D semiconducting channel in the VDW structure exhibits enhanced electric field exposure and radiation absorption,which facilitates the separation of the charge carriers and their ***,compared with bulk g-C_(3)N_(4)and its nanosheets,the photocatalytic performance of the fabricated carbon nitride VDW heterojunction in the water splitting reaction to hydrogen is improved by 8.6 and 3.3 times,respectively,while maintaining satisfactory ***,the finite element method(FEM)was employed to evaluate and clarify the contributions of the formation of VDW heterojunction to enhanced photocatalysis,in agreement quantitatively with experimental *** study provides a new and effective strategy for the modification and more insights to performance improvement on polymeric semiconductors in photocatalysis and energy conversion.

关键词： carbon nitride Van der Waals heterojunctions enhanced electric field exposure improved radiation absorption photocatalytic water splitting promoted dynamics of charge carriers

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Fullerenes for rechargeable battery applications:Recent developments and future perspectives

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Journal of Energy Chemistry 2021年第4期30卷 70-79页

作者： Zhipeng Jiang Yuming Zhao Xing Lu Jia Xie State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina Shenzhen Power Supply Bureau Co. Ltd.Shenzhen 518000GuangdongChina

The development of high-performance batteries is inseparable from the exploration of new *** them,fullerene C60 as an allotrope of carbon has many unique properties that are beneficial for battery applications,including precise structure,controllable derivatization,good solubility,and rich redox *** this review,we summarize the recent progress of fullerene-based materials in the field of rechargeable batteries and the key issues that need to be solved in the future application of *** hope this review can provide guidance and stimulate research about the applications of fullerenes in the field of energy storage.

关键词： Batteries Fullerene Carbon materials Energy storage

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Defect-modulated and heteroatom-functionalized Ti_(3−x)C_(2)T_(y)MXene 3D nanocavities induce growth of MoSe_(2)nanoflakes toward electrocatalytic hydrogen evolution in all pH electrolytes

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Nano Research 2024年第7期17卷 6294-6304页

作者： Ming Du Xianzhi Yang Jian Zhang Wei Chen Huajie Huang Xinbao Zhu Xing’ao Li State Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Centre for Advanced Materials(SICAM)Nanjing University of Posts and Telecommunications(NJUPT)Nanjing 210023China College of Electronic and Optical Engineering and College of Flexible Electronics Nanjing University of Posts and Telecommunications(NJUPT) Nanjing 210023China New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts and Telecommunications(NJUPT)Nanjing 210023China College of Pharmaceutical and Chemical Engineering Taizhou UniversityJiaojiang 318000China College of Mechanics and Materials Hohai UniversityNanjing 210098China College of Chemical Engineering Nanjing Forestry UniversityNanjing 210037China

Reducing kinetic energy barriers and developing accessible active sites are critical to deliver high hydrogen evolution reaction(HER)*** this paper,we synthesized defect-modulated and heteroatom(boron)-functionalized three-dimensional(3D)bowl-shaped Ti_(3−x)C_(2)T_(y)MXene(B-TCT)nanocavities coupled with the vertical growth of MoSe_(2)*** B-TCT@MoSe_(2)nanohybrids catalyst delivers the overpotentials of 49.9,52.7,and 67.8 mV to reach a HER current density of 10 mA·cm^(−2)under acidic,alkaline,and neutral conditions,*** outstanding HER activity is predominantly attributed to the heteroatom functionalization,self-adapting Ti vacancy(VTi)defect modulation,and spatial configuration design in the 3D B-TCT nanocavity,which synergistically regulate the electronic structure,activate the basal plane/edge unsaturated sites,and reduce the reaction energy *** and theoretical calculations demonstrate that strong heterogeneous interfacial bonding interactions between B-TCT and MoSe_(2)can dramatically reduce the free energy of hydrogen adsorption and facilitate efficient interfacial charge migration,thus essentially improving the HER *** used this 3D porous nanohybrid system assembled by defectrich lamellar structures to elucidate the advantageous synergistic effects of multiple mechanisms among defect structure,heteroatom functionalization,and interfacial coupling,which provided important insights for the development of efficient hybridtype catalysts.

关键词： electrocatalytic H_(2)evolution three-dimensional(3D)MXene nanocavity MoSe_(2)nanoflake self-adapting Ti vacancy defect heteroatom-functionalized interfacial interaction

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