Newly-modeled graphene-based ternary nanocomposite for the magnetophotocatalytic reduction of CO_(2) with electrochemical performance  

作　　者：Zambaga Otgonbayar Kwang Youn Cho Chong-Hun Jung Won-Chun Oh 

机构地区：[1]Department of Advanced Materials Science&Engineering,Hanseo University,Seosan-Si 31962,Korea [2]Korea Institutes of Ceramic Engineering and Technology,Jinju-Si 660031,Korea [3]Decommissioning Technology Research Division,Korea Atomic Energy Research Institute,Daejeon 305-600,Korea [4]Anhui International Joint Research Center for Nano Carbon-based Materials and Environmental Health,College of Materials Science and Engineering,Anhui University of Science&Technology,Huainan 232001,China

出　　处：《Frontiers of Chemical Science and Engineering》2022年第10期1438-1459,共22页化学科学与工程前沿（英文版）

摘　　要：The development of CO_(2)into hydrocarbon fuels has emerged as a green method that could help mitigate global warning.The novel structured photocatalyst is a promising material for use in a photocatalytic and magneto-electrochemical method that fosters the reduction of CO_(2)by suppressing the recombination of electron−hole pairs and effectively transferring the electrons to the surface for the chemical reaction of CO_(2)reduction.In our study,we have developed a novel-structured AgCuZnS_(2)–graphene–TiO_(2)to analyze its catalytic activity toward the selective evolution of CO_(2).The selectivity of each nanocomposite substantially enhanced the activity of the AgCuZnS_(2)–graphene–TiO_(2)ternary nanocomposite due to the successful interaction,and the selectivity of the final product was improved to a value 3 times higher than that of the pure AgCuZnS_(2)and 2 times higher than those of AgCuZnS_(2)–graphene and AgCuZnS_(2)–TiO_(2)under ultraviolet(UV)-light(λ=254 nm)irradiation in the photocatalytic process.The electrochemical CO_(2)reduction test was also conducted to analyze the efficacy of the AgCuZnS_(2)–graphene–TiO_(2)when used as a working electrode in laboratory electrochemical cells.The electrochemical process was conducted under different experimental conditions,such as various scan rates(mV·s^(–1)),under UV-light and with a 0.07 T magneticcore.The evolution of CO_(2)substantially improved under UV-light(λ=254 nm)and with 0.07 T magnetic-core treatment;these improvements were attributed to the facts that the UV-light activated the electron-transfer pathway and the magnetic core controlled the pathway of electrontransmission/prevention to protect it from chaotic electron movement.Among all tested nanocomposites,AgCuZnS_(2)–graphene–TiO_(2)absorbed the CO_(2)most strongly and showed the best ability to transfer the electron to reduce the CO_(2)to methanol.We believe that our newly-modeled ternary nanocomposite opens up new opportunities for the evolution of CO_(2)to methanol thro

关 键 词：ternary nanocomposite PHOTOCATALYTIC electrochemical CO_(2) reduction UV-LIGHT magnetic core 

分 类 号：O64[理学—物理化学]