Morphology-controlled synthesis and photocatalytic properties of K1.9Na0.1Ta2O6•2H2O

被引：4

作者：

Li, Yingxuan ^{[1
]}

Ding, Xiaoling ^{[1
,2
]}

Zhao, Jie ^{[1
]}

Zhu, Yunqing ^{[1
]}

Li, Yan ^{[1
,2
]}

Deng, Wenye ^{[1
]}

Wang, Chuanyi ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Xinjiang, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2015年 / 36卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Tantalate; K1.9Na0.1Ta2O6 center dot 2H(2)O; Morphology-controlled synthesis; Hydrothermal method; Nanosphere; Photocatalysis; HYDROTHERMAL SYNTHESIS; DOPED NATAO3; TANTALUM; H-2; NANOCRYSTALS; PYROCHLORE; NANOSHEETS; POWDERS; FACETS; O-2;

D O I：

10.1016/S1872-2067(15)61018-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The controllable synthesis of tantalate K1.9Na0.1Ta2O6 center dot 2H(2)O has been successfully achieved by a two-step technique, namely, the molten salt and hydrothermal methods, at a low temperature. By simply varying the KOH concentration in the hydrothermal process, K1.9Na0.1Ta2O6 center dot 2H(2)O particles with spherical, cuboctahedral, and durian-like morphologies were synthesized. The photocatalytic activity of the obtained samples for the degradation of rhodamine B was studied under ultraviolet light, which indicates that the photocatalytic properties of the samples are highly dependent on their morphologies. The K1.9Na0.1Ta2O6 center dot 2H(2)O nanospheres, with rough surfaces and the highest specific surface area, exhibit the best performance. The present work provides a unique approach for the controlled synthesis of tantalate photocatalysts, which are difficult to achieve through other synthetic approaches. (C) 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：2164 / 2170

页数：7

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