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Photocatalytic robust solar energy reduction of dinitrogen to ammonia on ultrathin MoS2
Sun, Songmei; Li, Xiaoman; Wang, Wenzhong; Zhang, Ling; Sun, Xiang
2017
发表期刊Applied Catalysis B: Environmental
ISSN09263373
卷号200页码:323-329
摘要The crux for solar N2reduction to ammonia is activating N2into its high-energy intermediate. Applying a simultaneous multi-electron reduction process could avoid intermediate generation and decrease the thermodynamic barrier. However, this process is extremely difficult from a kinetic view and experiments so far have not shown it is accessible. Here we show the first direct evidence of trion induced multi-electron N2reduction on ultrathin MoS2. By applying light induced trions, N2molecular was activated and transformed into ammonia by a simultaneous six-electron reduction process, with a high ammonia synthesis rate of 325 μmol/g h without the assistant of any organic scavengers or co-catalyst. Bulk MoS2without trions did not exhibit any activity. This demonstrates multi-electron reduction may be realized in electron-rich semiconductors with high concentration of localized electrons such as trions. The methodology of simultaneous multi-electron reduction has wide implications for reactions beyond N2reduction and for materials beyond MoS2. © 2016 Elsevier B.V.
DOI10.1016/j.apcatb.2016.07.025
EI入藏号20164102887428
EI主题词Sulfur compounds
EI分类号525.5 Energy Conversion Issues - 657.1 Solar Energy and Phenomena - 741.1 Light/Optics - 804.2 Inorganic Compounds
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25545
专题中国科学院上海硅酸盐研究所
作者单位State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
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Sun, Songmei,Li, Xiaoman,Wang, Wenzhong,et al. Photocatalytic robust solar energy reduction of dinitrogen to ammonia on ultrathin MoS2[J]. Applied Catalysis B: Environmental,2017,200:323-329.
APA Sun, Songmei,Li, Xiaoman,Wang, Wenzhong,Zhang, Ling,&Sun, Xiang.(2017).Photocatalytic robust solar energy reduction of dinitrogen to ammonia on ultrathin MoS2.Applied Catalysis B: Environmental,200,323-329.
MLA Sun, Songmei,et al."Photocatalytic robust solar energy reduction of dinitrogen to ammonia on ultrathin MoS2".Applied Catalysis B: Environmental 200(2017):323-329.
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