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Tuning Activities of K1.9Na0.1Ta2O6 center dot 2H(2)O Nanocrystals in Photocatalysis by Controlling Exposed Facets
Li, Yingxuan; Chen, Shuai; He, Hongquan; Zhang, Ying; Wang, Chuanyi
2013
发表期刊ACS APPLIED MATERIALS & INTERFACES
ISSN19448244
卷号5期号:20页码:10260-10265
摘要Morphology-controlled synthesis of tantalates is a major challenge in the field of material science. Herein, an innovative strategy has been developed for controllably synthesizing K1.9Na0.1Ta2O 6·2H2O (KNTO) nanocrystals shaped as octahedra and nanosheets without using any capping agents. The obtained nanocrystals show high activity in photocatalytic H2 evolution from CH3OH/H 2O solution, and their performance closely depends on the exposed facets, in which the {111}-facet-bounded nanooctahedra exhibit more than 3 times higher activity than the nanosheets dominated with {101} facets. The influence of surface atomic structure and electronic band structure on the photocatalytic properties of the KNTO nanocrystals is systematically studied. This is the first report for the facet controllable synthesis of tantalate materials with highly regular shapes. The present approach is anticipated as a general strategy for controllable synthesis of tantalate materials and also provides feasibility for rational design and activity optimization of shape-controlled photocatalysts for H2 production.
关键词K1.9na0.1ta2o6 Center Dot 2h(2)o Nanooctahedra Nanosheets Photocatalytic H-2 Evolution Exposed Facets Surface Structure
DOI10.1021/am403025q
收录类别SCI
WOS记录号WOS:000326212900054
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文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/3863
专题环境科学与技术研究室
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Li, Yingxuan,Chen, Shuai,He, Hongquan,et al. Tuning Activities of K1.9Na0.1Ta2O6 center dot 2H(2)O Nanocrystals in Photocatalysis by Controlling Exposed Facets[J]. ACS APPLIED MATERIALS & INTERFACES,2013,5(20):10260-10265.
APA Li, Yingxuan,Chen, Shuai,He, Hongquan,Zhang, Ying,&Wang, Chuanyi.(2013).Tuning Activities of K1.9Na0.1Ta2O6 center dot 2H(2)O Nanocrystals in Photocatalysis by Controlling Exposed Facets.ACS APPLIED MATERIALS & INTERFACES,5(20),10260-10265.
MLA Li, Yingxuan,et al."Tuning Activities of K1.9Na0.1Ta2O6 center dot 2H(2)O Nanocrystals in Photocatalysis by Controlling Exposed Facets".ACS APPLIED MATERIALS & INTERFACES 5.20(2013):10260-10265.
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