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Efficient photocatalytic reduction of dinitrogen to ammonia on bismuth monoxide quantum dots
Sun, Songmei1; An, Qi2; Wang, Wenzhong1; Zhang, Ling1; Liu, Jianjun1; Goddard III, William A.2
2017
发表期刊Journal of Materials Chemistry A
ISSN20507488
卷号5期号:1页码:201-209
摘要N2reduction to ammonia by solar light represents a green and sustainable ammonia synthesis approach which helps to suppress the global warming and energy crisis. However, conventional semiconductors usually suffer from low activity or poor stability, largely suppressing the application of this technology. Here, we report that bismuth monoxide (BiO) quantum dots with an average size of 2-5 nm exhibited efficient photocatalytic activity for ammonia synthesis under simulated solar light. A highly efficient ammonia synthesis rate of 1226 μmol g−1h−1is achieved without the assistance of any sacrificial agent or co-catalyst, which is about 1000 times higher than that using the traditional Fe-TiO2photocatalyst. Kinetic analysis reveals that the synergy of three low valence surface Bi(ii) species markedly enhances N2activation by electron donation, which finally resulted in the highly efficient N2photoreduction performance. This work will shed light on designing efficient and robust N2reduction photocatalysts. © The Royal Society of Chemistry.
DOI10.1039/C6TA09275F
EI入藏号20165203179238
EI主题词Bismuth compounds
EI分类号443.1 Atmospheric Properties - 525.6 Energy Policy - 714.2 Semiconductor Devices and Integrated Circuits - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804.2 Inorganic Compounds
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25467
专题中国科学院上海硅酸盐研究所
作者单位1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena; CA; 91125, United States
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Sun, Songmei,An, Qi,Wang, Wenzhong,et al. Efficient photocatalytic reduction of dinitrogen to ammonia on bismuth monoxide quantum dots[J]. Journal of Materials Chemistry A,2017,5(1):201-209.
APA Sun, Songmei,An, Qi,Wang, Wenzhong,Zhang, Ling,Liu, Jianjun,&Goddard III, William A..(2017).Efficient photocatalytic reduction of dinitrogen to ammonia on bismuth monoxide quantum dots.Journal of Materials Chemistry A,5(1),201-209.
MLA Sun, Songmei,et al."Efficient photocatalytic reduction of dinitrogen to ammonia on bismuth monoxide quantum dots".Journal of Materials Chemistry A 5.1(2017):201-209.
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