Boosting the catalytic activity of a step-scheme In_(2)O_(3)/ZnIn_(2)S_(4) hybrid system for the photofixation of nitrogen

作     者：Jin Zhang Zi-Hao Pan Ying Yang Peng-Fei Wang Chen-Yang Pei Wei Chen Guo-Bo Huang 张锦;潘梓豪;杨颖;王鹏飞;裴晨阳;陈伟;黄国波

作者机构：School of Pharmaceutical and Materials EngineeringTaizhou UniversityTaizhou 318000ZhejiangChina 

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：265-275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] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：大学生创新创业项目 中国博士后基金(2020M673228) 浙江省重点研发计划项目(2020C04004,2021C03007) 

主　　题：In_(2)O_(3) ZnIn_(2)S_(4) Step-scheme Nitrogen photofixation 

摘      要：In this study,a step-scheme photocatalytic system comprising one-dimensional In_(2)O_(3)nanorods and two-dimensional ZnIn_(2)S_(4)nanosheets was developed for the catalytic photofixation of *** effects of the combination of In_(2)O_(3)with ZnIn_(2)S_(4)on the crystallinity,microstructure,optical absorption,and charge transfer behavior of the In_(2)O_(3)/ZnIn_(2)S_(4)hybrid photocatalysts were *** from the synergistic effects of the photogenerated vacancies and a step-scheme charge separation mechanism,the In_(2)O_(3)/ZnIn_(2)S_(4)hybrid photocatalyst exhibited significantly enhanced catalytic activity compared to those of bare In_(2)O_(3)and pure ZnIn_(2)S_(4),and an optimized 50 wt%In_(2)O_(3)/ZnIn_(2)S_(4)hybrid sample was found to exhibit superior catalytic activity for the photofixation of N2,fixing 18.1±0.77 mg·L-1 of ammonia after exposure to simulated sunlight for 2 ***,the results of trapping experiments and electron paramagnetic resonance investigation to identify the active species confirmed that the catalytic nitrogen photofixation performance was highly correlated with the presence of·CO_(2)-radicals rather than photogenerated electrons,especially when methanol was used as a hole *** summary,the reported In_(2)O_(3)/ZnIn_(2)S_(4)hybrid photocatalysts exhibit both stability and high activity for the photofixation of N_(2),making them promising catalysts for sunlight-driven artificial N_(2)fixation.