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题名: Tuning Activities of K1.9Na0.1Ta2O6 center dot 2H(2)O Nanocrystals in Photocatalysis by Controlling Exposed Facets
作者: Li, Yingxuan; Chen, Shuai; He, Hongquan; Zhang, Ying; Wang, Chuanyi
关键词: K1.9Na0.1Ta2O6 center dot 2H(2)O ; nanooctahedra ; nanosheets ; photocatalytic H-2 evolution ; exposed facets ; surface structure
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2013
DOI: 10.1021/am403025q
卷: 5, 期:20, 页:10260-10265
收录类别: SCI
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.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3863
Appears in Collections:环境科学与技术研究室_期刊论文

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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

Recommended Citation:
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.
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文件名: Tuning Activities of K1.9Na0.1Ta2O6 center dot 2H(2)O Nanocrystals in Photocatalysis by Controlling Exposed Facets .pdf
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