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Electric field and photoelectrical effect bi-enhanced hydrogen evolution reaction

Nano Research 2018年第6期11卷 3205-3212页

作者： Mengyu Yan Xunbiao Zhou Xuelei Pan dunhui Wang Lixue Xia Kesong Yu Xiaobin Liao Xu Xu Liang He Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Materials Science and Engineering Department University of Washington Seattle Washington 98195-2120 USA

Molybdenum disulfide （MoS2） is an earth-abundant and low-cost hydrogen evolving electrocatalyst with the potential to replace traditional noble metal catalysts. The catalytic activity can be significantly enhanced after modification due to higher conductivity and enriched active sites. However, the underlying mechanism of the influence of the resistance of electrode material and contact resistance on the hydrogen evolution reaction （HER） process is unclear. Herein, we present a systematic study to understand the relationship between HER performance and electrode conductivity, which is bi-tuned through the electric field and photoelectrical effect. It was found that the onset overpotential consistently decreased with the increase of electrode conductivity. In addition, the reduction of the contact resistance resulted in a quicker electrochemical reaction process than enhancing the conductivity of the MoS2 nanosheet. An onset overpotential of 89 mV was achieved under 60 mW/cm^2 sunlight illumination （0.6 sun） and a simultaneous gate voltage of 3 V. These physical strategies can also be applied to other catalysts, and offer new directions to improve HER catalytic performance of semiconductor materials.

关键词： electrochemical device hydrogen evolution reaction photoelectrical effect field effect

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Hierarchically nanostructured porous TiO_2(B) with superior photocatalytic CO_2 reduction activity

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Science China Chemistry 2018年第3期61卷 344-350页

作者： Tingmin Di Jinfeng Zhang Bei Cheng Jiaguo Yu Jingsan Xu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Department of Physics Faculty of Science King Abdulaziz University School of Chemistry Physics and Mechanical Engineering Queensland University of Technology

Hierarchically nanostructured, porous TiO_2(B) microspheres were synthesized by a microwave-assisted solvothermal method combined with subsequent heat treatment in air. The materials were carefully characterized by scanning and transmission electron microscopy, X-ray diffraction, CO_2 adsorption, and a range of spectroscopies, including Raman, infrared, X-ray photoelectron and UV-Vis spectroscopy. The hierarchical TiO_2(B) particles are constructed by ultrathin nanosheets and possess large specific surface area, which provided many active sites for CO_2 adsorption as well as CO_2 conversion. The TiO_2(B)nanostructures exhibited marked photocatalytic activity for CO_2 reduction to methane and methanol. Anatase TiO_2 and P25 were used as the reference photocatalysts. Transient photocurrent measurement also proved the higher photoactivity of TiO_2(B) than that of anatase TiO_2. In-situ infrared spectrum was measured to identify the intermediates and deduce the conversion process of CO_2 under illumination over TiO_2(B) photocatalyst.

关键词： photocatalytic CO2 reduction TiO2（B） hierarchical nanostructure anatase TiO2

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Semiconductors modified gourd-shaped hollow PtNi and their directional electron and mass transfer effects

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Chemical Engineering Journal 2023年 474卷

作者： Fu-Fei Pu Yu-Xuan Xiao Xiong Yang Fei Yu Lei Xia Jiang-Bo Chen Lu Wu Jing-Jing Xie Wen-Ying Zhao Yu Liu Li-Ying Wang Jie Ying Mei-Jing Liao Kenneth I. Ozoemena Ge Tian Fazhou Wang Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & State Key Laboratory of Silicate Materials for Architectures & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao) School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China Institute of Precision Measurement Science and Technology Innovation Chinese Academy of Sciences Wuhan 430064 China School of Chemistry and Chemical Hubei University Wuhan 430062 China Molecular Sciences Institute School of Chemistry University of the Witwatersrand Johannesburg 2050 South Africa

Maximization of the utilization of electronic energy and enhancement of mass transfer are important goals in designing high-performance electrocatalytic PtNi nanoalloys. However, realization of such a combination of these properties into Pt based electrocatalysts remains a significant challenge. In an effort targeted at attaining these goals, we prepared several semiconductors (BiVO 4 , CdS and TiO 2 ) modified, gourd-shaped hollow PtNi nanocomposites . We observed that among members of this group, BiVO 4 modified PtNi (denoted as BiVO 4 /PtNi) displays optimal directional electron and mass transfer, which are attributed to the closeness of the work functions of BiVO 4 and PtNi, and a unique gourd-shaped, hollow structure. Moreover, BiVO 4 /PtNi displays remarkable electrocatalytic performance in the hydrogen evolution reaction, in terms of low overpotential of 23 mV to drive the current density of 10 mA cm −2 and a low Tafel slope of 40 mV dec −1 in alkaline natural seawater. Furthermore, this nanocomposite exhibits high stability during a 20-h durability test that greatly exceeds that of commercial Pt/C. The results of this investigation show that new approaches exist for designing novel nanomaterials that have superior performance as electrocatalysts or in other practical applications.

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Sulfurized Composite Interphase Enables a Highly Reversible Zn Anode

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Angewandte Chemie 2024年第7期137卷

作者： Lu Wu Dr. Hao Yuan Yongkang An Dr. Jianguo Sun Yu Liu Dr. Han Tang Wei Yang Lianmeng Cui Jinghao Li Prof. Qinyou An Prof. Yong-Wei Zhang Prof. Lin Xu Prof. Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China Institute of High Performance Computing (IHPC) Agency for Science Technology and Research (A*STAR) 1 Fusionopolis Way #16-16 Connexis Singapore 138632 Singapore Department of Materials Science and Engineering National University of Singapore Singapore 117574 Singapore Hubei Provincial Key Laboratory of Green Materials for Light Industry School of Materials and Chemical Engineering Hubei University of Technology Wuhan 430068 China Hubei Longzhong Laboratory Wuhan University of Technology (Xiangyang Demonstration Zone) Xiangyang 441000 China Zhongyu Feima New Material Technology Innovation Center (Zhengzhou) Co. Ltd. Zhengzhou 450001 China

The stability and reversibility of Zn anode can be greatly improved by in situ construction of solid electrolyte interphase (SEI) on Zn surface via a low-cost design strategy of ZnSO 4 electrolyte. However, the role of hydrogen bond acceptor -SO 3 accompanying ZnS formation during SEI reconstruction is overlooked. In this work, we have explored and revealed the new role of -SO 3 and ZnS in the in situ formed sulfide composite SEI (SCSEI) on Zn anode electrochemistry in ZnSO 4 aqueous electrolytes. Structure characterization and DFT demonstrate that the introduction of -SO 3 can not only reduce the dehydration energy of [Zn(H 2 O) 6 ] 2+ , but also enhance the stability of the ZnS/Zn interface and homogenize the ZnS/Zn interface electric field, thereby significantly improving the dynamic kinetics and uniform deposition of Zn 2+ . Owing to the synergistic effect of ZnS and -SO 3 , a high cycling stability of 1500 h with a cumulative-plated capacity of 7.5 Ah cm −2 at 10 mA cm −2 has been achieved within the symmetrical cell. Furthermore, the full cell with NH 4 V 4 O 10 cathode exhibits outstanding cyclic stability, exceeding 2000 cycles at 5 A g −1 and maintaining a Coulombic efficiency of 100 %. These new insights into anionic synergistic strategy could significantly enhance the practical application of zinc-ion batteries.

关键词： electrolyte in situ sulfurized SEI anionic synergistic zinc ion batteries

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Effect of SiC additions on microstructure evolution and mechanical properties of W-based composite prepared by arc-melting

Effect of SiC additions on microstructure evolution and mech...

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Chinese materials Conference, 2018

作者： Kang, Kejia Fan, Peng Zhang, Jian Luo, Guoqiang Shen, Qiang Zhang, Lianmeng State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

ISBN: (纸本)9783035713848

In this study, the W-Si-C multi-phase composites were fabricated by an arc melting method. With addition of SiC, the grain size of W is obviously reduced, and the small angle misorientation becomes dominate, which is beneficial for the improvement of deformability. The effects of SiC additions (from 0.5 to 3wt%) on the microstructure and mechanical properties are mainly investigated. With 1 wt% SiC addition, the flexural strength reaches the highest value. The self-generation of W5 Si3 may enhance the strength and ductility, but too much W5 Si3 exists as brittle BP (Brittle to Plastic) microstructure. The highest flexural strength is obtained at approximately 1 vol% W5 Si3. © 2019 Trans Tech Publications, Switzerland.

关键词： Silicon carbide

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二维/三维异质结构的纳米级相管理以实现高效的钙钛矿太阳能电池（英文）

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Science Bulletin 2024年第18期 2853-2861页

作者：顾浩朱桉楠夏俊民李旺郑嘉豪杨涛李胜文张楠梅时良蔡永青陈石梁超邢贵川 Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing University of Posts & Telecommunications (NUPT) MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter School of Physics National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology Xi'an Jiaotong University Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Harbin Institute of Technology Institute for Electric Light Sources School of Information Science and Technology Fudan University

The stabilization of the formamidinium lead iodide （FAPbⅠ3） structure is pivotal for the development of efficient photovoltaic *** two-dimensional （2D） layers to passivate the threedimensional （3D） perovskite is essential for maintaining the a-phase of FAPb Ⅰ3and enhancing the power conversion efficiency （PCE） of perovskite solar cells （PSCs）.However,the role of bulky ligands in the phase management of 2D perovskites,crucial for the stabilization of FAPbⅠ3,has not yet been *** this study,we synthesized nanoscale 2D perovskite capping crusts with

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Tuning CoPi stability in electrochemical water oxidation via surface modification with an organic ligand shell

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International Journal of Hydrogen Energy 2024年 76卷 141-151页

作者： Khattak, Zafar A.K. Younus, Hussein A. Ahmad, Nazir Alomar, Muneerah Ullah, Habib Al-Abri, Mohammed Al-Hajri, Rashid Kao, Chih-Ming Verpoort, Francis State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China Nanotechnology Research Center Sultan Qaboos University P.O Box 33 Al Khould MuscatPC 123 Oman 6 Miklukho-Maklaya Str. Moscow117198 Russia Department of Chemistry Government College University Lahore Lahore54000 Pakistan Department of Chemistry University of Buner Swari Khyber Pakhtunkhwa Buner Pakistan Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Department of Materials Science and Engineering Chungnam National University Daejeon34134 Korea Republic of Chemistry Department Faculty of Science Fayoum University Fayoum63514 Egypt Department of Chemical and Petroleum Engineering College of Engineering Sultan Qaboos University P.O Box 33 Al Khould MuscatPC 123 Oman Institute of Environmental Engineering National Sun Yat-Sen University Kaohsiung Taiwan

In electrocatalytic applications, catalyst interface crucially influences electrochemical activity and selectivity, balancing adsorption, desorption, and transport of intermediates and electrons. Capitalizing on this fact, this study unveils a novel approach to enhance CoOx surfaces, a promising electrocatalyst for water oxidation, through organic shell functionalization via electrodeposition. Utilizing a dinuclear cobalt complex 1, resembling CoOx's structure, we crafted a modified film exhibiting remarkable stability. This film consistently delivered a current density of 2.0 mA/cm2 for oxygen evolution at 1.5 V vs. NHE, sustaining over 25 h under neutral conditions with only a minimal 5% activity reduction. Conversely, the standard CoPi catalyst underwent rapid deterioration, losing about 40% of its initial catalytic current in just 14 h. Further investigations revealed that the organic shell effectively reduces catalyst dissolution, in contrast to the severe dissolution of CoPi, directly impacting its catalytic activity. This approach offers a straightforward means to functionalize various nanostructured materials, potentially enhancing their electrochemical activities and stabilities. © 2024 Hydrogen Energy Publications LLC

关键词： Dissolution

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Author Correction: Stretchable wireless optoelectronic synergistic patches for effective wound healing

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npj Flexible Electronics 2024年第1期8卷 204-204页

作者： Qian Wang Siyuan Cai Guang Yao Liyuan Zhang Wenhao Lou Youxin Chen Qingqing Li Maowen Xie Xingyi Gan Chenzheng Zhou Taisong Pan Min Gao Kangning Zhao Zhen Cai Yuan Lin School of Materials and Energy University of Electronic Science and Technology of China Chengdu Sichuan China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu Sichuan China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen Guangdong China Medico-Engineering Cooperation on Applied Medicine Research Center University of Electronic Science and Technology of China Chengdu Sichuan China Department of Plastic Surgery Sichuan Provincial People’s Hospital University of Electronic Science and Technology of China Chengdu Sichuan China Department of Plastic and Cosmetic Surgery Xinqiao Hospital Army Medical University Chongqing China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan Hubei China

In this articleQianWang,Siyuan Cai,Guang Yao and Liyuan Zhang should have been denoted as equally contributing *** the sentence beginning‘In order to clarify the relationship between...’in this article,the sentence‘The heating performance of the OESP was stable without passing the batch,with average maximum,minimum,and mean temperatures of 33.52,30.27,and 32.37℃,respectively(Supplementary Fig.6a)’should have read‘The heating performance of the OESP was stable with average maximum,minimum,and mean temperatures of 33.52,30.27,and 32.37℃,respectively(Supplementary Fig.6a)’.The original article has been updated.

关键词： wound healing batch

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Facile preparation of pristine graphene using urea/glycerol as efficient stripping agents

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Nano Research 2018年第2期11卷 820-830页

作者： Jianping Chen Weili Shi Zhaodongfang Gao Tao Wang Shan Wang Lijie Dong Quanling Yang Chuanxi Xiong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering Wuhan University of Technology Wuhan China National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials Henan University Kaifeng China

Large-scale exfoliation of defect-free and few-layer graphene by an inexpensive and environmentally-friendly route has been a significant challenge for a long time. Here we show that high-quality, few-layer graphene with high stability and low defect content can be obtained from natural graphite via a simple stirring process in urea/glycerol, with yields of up to 12 wt.%. We also demonstrate that this facile method can be applied to the exfoliation of other two-dimensional materials, such as molybdenum disulfide and boron nitride. The as-prepared graphene was further composited with polyvinylidene fluoride （PVDF） and the composite exhibited a low percolation threshold of 0.05 vol.%. The incorporation of low （4.5 vol.%） graphene amounts led to a significant increase in the thermal conductivity of the graphene-PVDF composites.

关键词： urea/glyceroLpristine graphene thermal conductivity graphene-basedcomposite

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Al-based metal-organic frameworks with densely hydroxyl-functionalized surface for one-step ethylene purification

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Separation and Purification technology 2025年 375卷

作者： Li, Zheng Zeng, Yilu Wu, Zeng Wang, Hao Liu, Ying Wang, Taohong Chen, Jingwen Chang, Ganggang Bao, Zongbi School of Chemistry Chemical Engineering and Life Science & State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Wuhan430070 China Key Laboratory of Biomass Chemical Engineering of the Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou310027 China Co. Ltd. No. 19 Qiema North Road High-tech Zone Hebei Province Shijiazhuang City China School of Chemistry and Chemical Engineering Nanchang University Nanchang330031 China

Separating C2H6 from C2H6/C2H4 mixture holds significant importance in chemical manufacturing processes, yet remains technically demanding with substantial energy requirements. Metal-organic frameworks (MOFs), featuring tailorable pore sizes and functionalities, are highly effective in separating these mixtures. However, the lack of specially designed adsorption sites in C2H6-selective MOFs leads to weak interactions with C2H6 molecules, limiting their selectivity and productivity for C2H4. In addition, the traditional synthesis method yields MOF material as crystalline powder, causing dust and pressure drop in fixed beds, which hinder further applications. Actually, hydrogen bonds can function as highly efficient adsorption sites for gases, significantly enhancing the intermolecular hydrogen bonding interactions. Therefore, we proposed a "hydroxyl gradient regulation" strategy to successfully prepare the CAU-1 isomorphs employing organic linkers with varying number of hydroxyl functional groups, and their C2H6/C2H4 separation properties were investigated. Gas adsorption experiments and theoretical calculations confirmed that the obvious C2H6 selective adsorption of all CAU-1 isomorphs, among which CAU-1-(OH)2 exhibited moderate-high C2H6 uptake (3.61 mmol g−1) and selectivity (2) of C2H6/C2H4 (50:50, v:v) at 298 K and 1 bar, exceeding many previously reported materials. These outstanding results can be attributed to the favorable pore environments within the MOF, greatly strengthening the interactions with C2H6 through the incorporation of specific functional groups in the confined space. The precise binding sites for C2H6 were distinctly identified through density functional theory (DFT). Additionally, by using eco-friendly carboxymethyl cellulose (CMC) binder, the robust CAU-1-(OH)2@CMC maintained the excellent properties of one-step C2H4 purification (>99.9 %) during breakthrough tests, enhancing its industrial separation potential of C2H6/C2H4. © 2025 Elsevier

关键词： Binding sites

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