Hydrothermal growth of multi-facet anatase spheres

被引：19

作者：

Wu, Jin-Ming ^{[1
]}

Song, Xiao-Mei ^{[1
]}

Ma, Lu-Yao ^{[1
]}

Wei, Xiao-Dan ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2011年 / 319卷 / 01期

关键词：

Crystal structure; Nanostructures; Hydrothermal crystal growth; Nanomaterials; HIGH PHOTOCATALYTIC ACTIVITY; TIO2 NANOTUBE ARRAYS; DOMINANT; 001; FACETS; VISIBLE-LIGHT; THIN-FILMS; HOLLOW MICROSPHERES; DIRECT DEPOSITION; RHODAMINE-B; TITANIUM; NANORODS;

D O I：

10.1016/j.jcrysgro.2011.01.039

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Titania with various nanostructures can be synthesized by several F--mediated procedures. In this paper, we report the synthesis of a novel multi-facet microsphere consisting of etched single-crystalline anatase by simply immersing metallic Ti plates in an HF aqueous solution under hydrothermal conditions. The etched multi-facet sphere was found to grow through the nucleation and growth of truncated bipyramids on a previously precipitated one to assemble a microsphere, and its subsequent etching by HF to expose the thermodynamic stable {1 0 1} facets. The photocatalytic activity of such etched multi-facet sphere thin films was evaluated utilizing rhodamine B and sulfonic salicylic acid in water as target molecules and compared with commercial Degussa P25 titania nanoparticles. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：57 / 63

页数：7

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