Статья

Shape control of colloidal Mn doped ZnO nanocrystals and their visible light photocatalytic properties

Yefeng YangState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P.R. China. [email protected] [email protected]Yaguang LiState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P.R. ChinaLiping ZhuCyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, P. R. ChinaHaiping HeState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P.R. ChinaLiang HuState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P.R. ChinaJingyun HuangState Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P.R. ChinaFengchun HuNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P.R. ChinaBeibei HeNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P.R. ChinaZhizhen YeCyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, P. R. China

2013en

ABI

Аннотация

For colloidal semiconductor nanocrystals (NCs), shape control and doping as two widely applied strategies are crucial for enhancing and manipulating their functional properties. Here we report a facile and green synthetic approach for high-quality colloidal Mn doped ZnO NCs with simultaneous control over composition, shape and optical properties. Specifically, the shape of doped ZnO NCs can be finely modulated from three dimensional (3D) tetrapods to 0D spherical nanoparticles in a single reaction scheme. The growth mechanism of doped ZnO NCs with interesting shape transition is explored. Furthermore, we demonstrate the tunable optical absorption features of Mn doped ZnO NCs by varying the Mn doping levels, and the enhanced photocatalytic performance of Mn doped ZnO NCs under visible light, which can be further optimized by delicately controlling their shapes and Mn doping concentrations. Our results provide an improved understanding of the growth mechanism of doped NCs during the growth process and can be potentially extended to ZnO NCs doped with other metal ions for various applications.

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Идентификаторы

DOI: 10.1039/c3nr03160h

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar