Construction of 2D/2D Z-scheme MnO_(2-x)/g-C_(3)N_(4) photocatalyst for efficient nitrogen fixation to ammonia

查看全文 作　　者：Limin [1]Yu;Zhao [1]Mo;Xianglin [1]Zhu;Jiujun [1]Deng;Fan [1]Xu;Yanhua [2]Song;Yuanbin [3]She;Huaming [1]Li;Hui [1]Xu

机构地区：[1]School of the Environment and Safety Engineering,Institute for Energy Research,Jiangsu University,Zhenjiang,212013,China;[2]School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang,212003,China;[3]State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou,310014,China

出　　处：《Green Energy & Environment》索引2021年第6卷第4期,共8页

基　　金：supported by National Natural Science Foundation of China(21776118,21808090);Natural Science Foundation of Jiangsu Province(BK20190981);Jiangsu Fund for Distinguished Young Scientists(BK20190045);China Postdoctoral Science Foundation(2019M661765);High-tech Research Key laboratory of Zhenjiang(SS2018002);A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions,the high-performance computing platform of Jiangsu University。 摘　　要：Reducing nitrogen to ammonia with solar energy has become a wide concern when it comes to photocatalysis research.It is considered to be one of the more promising alternate options for the conventional Haber-Bosch cycle.Herein,2D g-C_(3)N_(4)composites with modifying ultrathin sheet MnO_(2-x)were prepared and used as nitrogen fixation photocatalyst.With the assistance of the nature of MnO_(2-x),the generation rate of NH_(3)reached 225 mmol g^(-1)h^(-1),which is more than twice over the rate of pristine 2D g-C_(3)N_(4)(107 mmol g^(-1)h^(-1)).The presence of ultrathin sheet MnO_(2-x)shortens the gap of the carriers to the surface of photocatalyst.Thus the speed of electron transfer gets increased.Besides,the construction of Z-scheme heterojunction boosts the separation and migration of photogenerated carriers.As a result,the nitrogen reduction reaction(NRR)performance gets enhanced.The work may provide an example of promoting the NRR performance of non-metallic compound. 关键词：Nitrogen fixation Z-Scheme heterojunction g-C_(3)N_(4) Photocatalysis

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Construction of 2D/2D Z-scheme MnO_(2-x)/g-C_(3)N_(4) photocatalyst for efficient nitrogen fixation to ammonia

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