Comprehensive investigation on robust photocatalytic hydrogen production over C_(3)N_(5)

作     者：Cong Peng Lixiao Han Jinming Huang Shengyao Wang Xiaohu Zhang Hao Chen 彭聪;韩利晓;黄金铭;汪圣尧;张晓虎;陈浩

作者机构：College of ScienceHuazhong Agricultural UniversityWuhan 430070HubeiChina 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2022年第43卷第2期

页      面：410-420页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 

基　　金：国家自然科学基金(21703075,51872107,52073110) 湖北省自然科学基金(2020CFB694) 中央高校基本科研基金(2662020LXPY005) 

主　　题：C_(3)N_(5) Photocatalysis H_(2)production In-situ DRIFTS Water adsorption 

摘      要：Carbon nitride has drawn numerous eyes in the past decade,whereas the photocatalytic performance is significantly limited by its wide band-gap(~2.7 e V for C_(3)N_(4))***,C_(3)N_(5)with narrower band-gap has been reported,however,a systematically investigation on its photoactivity for H_(2)production has not been *** present work demonstrates the synthesis of C_(3)N_(5)by thermal treatment of 3-amino-1,2,4-triazole,and the photocatalytic performance for H_(2)production of C_(3)N_(5)is investigated *** H_(2)production rate of C_(3)N_(5)is~2.2 times higher than that of C_(3)N_(4) with 1.0 wt%Pt as co-catalyst,and series of experiments are carried out to explore the behind elements accounting for the high *** the results of DRS,PL and photocurrent,it is found that C_(3)N_(5)possesses wider visible light absorption region,lower band-gap and quicker photogenerated e^(-)/h^(+)separation ***,characterizations including in-situ DRIFTS are adopted to monitor the adsorption property of H_(2)O on C_(3)N_(5),which plays a significant role in surface water reduction reaction,and higher amount of adsorbed H_(2)O molecules on C_(3)N_(5)is *** present work exhibits new insights into the high photocatalytic performance of N-rich carbon nitride catalysts.