Facile synthesis and enhanced photocatalytic properties of truncated bipyramid-shaped anatase TiO2 nanocrystals.

被引：19

作者：

Liu, Ningan ^{[1
]}

Zhao, Yunyan ^{[1
]}

Wang, Xuncai ^{[1
]}

Peng, Hongrui ^{[1
]}

Li, Guicun ^{[1
]}

机构：

[1] Qingdao Univ & Technol, Coll Mat Sci & Engn, Qingdao, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 102卷

基金：

中国国家自然科学基金;

关键词：

Crystal growth; Nanocrystals; Nanomaterials; Optical materials and properties; Semiconductors; TiO2; EXPOSED; 001; FACETS; PERCENTAGE;

D O I：

10.1016/j.matlet.2013.03.106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Truncated bipyramid-shaped anatase TiO2 nanocrystals bound by eight {101} facets and two {001} facets have been synthesized by a facile solvothermal approach with the aid of HF and H2O2. The influences of synthetic parameters, such as the volume of HF and H2O2 aqueous solution, on the sizes and shapes of the resulting TiO2 nanocrystals have been investigated. It is found that the shapes of TiO2 nanocrystals can be evolved from nanosheets to truncated nanobipyramid with decreasing the volume of HF solution in the presence of H2O2 aqueous solution. Photocatalytic measurements show that truncated bipyramidshaped TiO2 nanocrystals exhibit improved photocatalytic activity of methyl orange in comparison with commercial-grade Degussa P25 TiO2 nanoparticles due to the high exposure of (001) facets. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：53 / 55

页数：3

共 19 条

[1] Room Temperature One-Step Polyol Synthesis of Anatase TiO2 Nanotube Arrays: Photoelectrochemical Properties
Allam, Nageh K.
Grimes, Craig A.
[J]. LANGMUIR, 2009, 25 (13) : 7234 - 7240
[2] Titanium dioxide nanomaterials: Synthesis, properties, modifications, and applications
Chen, Xiaobo
Mao, Samuel S.
[J]. CHEMICAL REVIEWS, 2007, 107 (07) : 2891 - 2959
[3] Dai Y, 2009, NANO LETT, V9, P2455
[4] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE
FUJISHIMA, A
HONDA, K
[J]. NATURE, 1972, 238 (5358) : 37 - +
[5] Synthesis of Titania Nanosheets with a High Percentage of Exposed (001) Facets and Related Photocatalytic Properties
Han, Xiguang
Kuang, Qin
Jin, Mingshang
Xie, Zhaoxiong
Zheng, Lansun
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (09) : 3152 - +
[6] Growth of submicrometer-scale rectangular parallelepiped rutile TiO2 films in aqueous TiCl3 solutions under hydrothermal conditions
Hosono, E
Fujihara, S
Kakiuchi, K
Imai, H
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (25) : 7790 - 7791
[7] Self-Organized Ultrathin Oxide Nanocrystals
Huo, Ziyang
Tsung, Chia-Kuang
Huang, Wenyu
Fardy, Melissa
Yan, Ruoxue
Zhang, Xiaofeng
Li, Yadong
Yang, Peidong
[J]. NANO LETTERS, 2009, 9 (03) : 1260 - 1264
[8] Jiang L, 2009, MAT RES B, V44, P999
[9] Synthesis of submicrometer-sized hollow titania spheres with controllable shells
Li, GC
Zhang, ZK
[J]. MATERIALS LETTERS, 2004, 58 (22-23) : 2768 - 2771
[10] Tunable Photocatalytic Selectivity of Hollow TiO2 Microspheres Composed of Anatase Polyhedra with Exposed {001} Facets
Liu, Shengwei
Yu, Jiaguo
Jaroniec, Mietek
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (34) : 11914 - 11916

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