Non-metal inducing charge rearrangement in carbon nitride to promote photocatalytic hydrogen production  

作　　者：Guanyu Wu Zhiyu He Qiuheng Wang Haibo Wang Zeyu Wang Peipei Sun Zhao Mo Huanzhi Liu Hui Xu 

机构地区：[1]School of the Environment and Safety Engineering,School of Materials Science&Engineering,Jiangsu University,Zhenjiang 212013,China [2]Jiangsu Vocational College of Electronics and Information,Huaian 223003,China [3]College of Chemical Engineering and Environment,China University of Petroleum,Beijing 102249,China [4]Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou University of Science and Technology,Suzhou 215009,China

出　　处：《Journal of Materials Science & Technology》2024年第28期1-8,共8页材料科学技术(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.22208129,22378174);the Huaian City Science and Technology Plan Project(No.HAG202303).

摘　　要：Photocatalytic hydrogen production technology offers a means of converting solar energy into chemical energy contained in hydrogen for human consumption.However,traditional photocatalysts restrict the progress of photocatalytic technology owing to the straightforward complexation of carriers and lack of active sites.Thus,in this work,the number of active sites and carrier separation efficiency have been significantly improved by non-metallic modification and modulation of the geometry of carbon nitride.It has been demonstrated that oxygen doping enhances the energy band structure of benzene-substituted Odoped g-CN nanotubes(BOCN).Oxygen,in conjunction with the benzene ring,creates redox energy level positions that are spatially separated.One-dimensional tubular structures synthesised by supramolecular self-assembly have a thin-walled structure capable of exposing more active sites.Additionally,the adsorption equilibrium of H+on the catalyst is further enhanced.The in-depth analysis of each component through experiments and theoretical calculations contributes to a reasonable photocatalytic mechanism for decomposing aquatic hydrogen.

关 键 词：Carbon nitride PHOTOCATALYSIS Hydrogen evolution Charge separation 

分 类 号：O64[理学—物理化学]