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Electro-assisted photocatalytic reduction of CO_(2) in ambient air using Ag/TNTAs at the gas-solid interface

Materials Reports(Energy) 2024年第2期4卷 71-82页

作者： Feng Yue Zhaoya Fan Cong Li Yang Meng Shuo Zhang Mengke Shi Minghua Wang Mario Berrettoni Jun Li Hongzhong Zhang Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration Zhengzhou University of Light IndustryZhengzhou450001PR China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou450052PR China Department of Chemistry University of CamerinoCamerino62032MacerataItaly

The direct conversion of atmospheric CO_(2) into fuel via photocatalysis exhibits significant practical application value in advancing the carbon *** this study,we established an electro-assisted photocatalytic system with dual compartments and interfaces,and coated Ag nanoparticles on the titanium nanotube arrays(TNTAs)by polydopamine *** the absence of sacrificial agent and alkali absorption liquid conditions,the stable,efficient and highly selective conversion of CO_(2) to CO at the gas-solid interface in ambient air was realized by photoelectric ***,with the assistance of potential,the CO formation rates reached 194.9μmol h^(−1) m^(−2) and 103.9μmol h^(−1) m^(−2) under ultraviolet and visible light irradiation,respectively;the corresponding CO_(2) conversion rates in ambient air were 30%and 16%,*** excellent catalytic effect is mainly attributed to the formation of P–N heterojunction during the catalytic process and the surface plasmon resonance ***,the introduction of solid agar electrolytes effectively inhibits the hydrogen evolution reaction and improves the electron utilization *** system promotes the development of photocatalytic technology for practical applications and provides new insights and support for the carbon cycle.

关键词： Electro-assisted photocatalytic gas-solid interface Ambient air P–N heterojunction Practical applications

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Understanding the structural evolution of Au/WO_(2.7) compounds in hydrogen atmosphere by atomic scale in situ environmental TEM

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Nano Research 2020年第11期13卷 3019-3024页

作者： Fei Hui Chong Li Yanhui Chen Chunhui Wang Jingping Huang Ang Li Wei Li Jin Zou Xiaodong Han Key Lab of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing100124China International Laboratory for Quantum Functional Materials of Henan School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450001China School of Mechanical and Mining Engineering and Centre for Microscopy and Microanalysis The University of QueenslandSt LuciaQLD4072Australia

Hydrogen energy is a resuscitated clean energy source and its sensitive detection in air is crucial due to its very low explosive *** oxide decorated with noble metal nanoparticles has been used for the enhancement of gas detection and exhibits superior *** the intrinsic mechanism of the detection and the enhancement mechanism is thus becoming a fundamental issue for the further development of novel metal/oxide compound gas-sensing ***,the correlation between the microstructural evolution,the charge transport and the complex sensing process has not yet been directly revealed and its atomic mechanism is still *** this study,an Au/WO_(2.7) compound was synthesized and exhibited a strongly enhanced gas sensitivity to many reductive gases,especially ***-corrected environmental transmission electron microscopy was used to investigate the atomic-scale microstructural evolution in situ during the reaction between H_(2) and Au/WO_(2.7) *** and sintering processes of the Au particles on the WO_(2.7) surface were observed under heating and gaseous environments,and no injection of hydrogen atoms was *** principle calculations verified the swing and sintering processes,and they can be explained by the enhancement of H2 sensitivity.

关键词： in situ environmental TEM H2 sensing Au/WO_(2.7) gas-solid interface

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