Synthesis, characterization, and photocatalytic activities of titanate nanotubes surface-decorated by zinc oxide nanoparticles

被引：93

作者：

Wang, Li Shi ^{[1
]}

Xiao, Ming Wei ^{[2
]}

Huang, Xin Jian ^{[1
]}

Wu, Yan Dan ^{[2
]}

机构：

[1] S China Univ Technol, Coll Chem Sci, Guangzhou 510640, Guangdong, Peoples R China

[2] S China Univ Technol, Coll Environm Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 161卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Titanate nanotube; Zinc oxide; Photocatalysis; Recycle use; TIO2; NANOTUBES; HYDROTHERMAL CONDITIONS; OPTICAL-PROPERTIES; TITANIUM-DIOXIDE; METHYL-ORANGE; ZNO; DEGRADATION; WATER; PENTACHLOROPHENOL; NANOSTRUCTURES;

D O I：

10.1016/j.jhazmat.2008.03.080

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Nanoscaled zinc oxide (ZnO) particles with different amounts are coated on titanate nanotubes (TNTs) by a facile chemical method at room temperature. The characterizations of XPS, TEM, XRD and UV-vis spectra confirm that pure hexagonal wurtzite ZnO nanoparticles with an average size of about 9 nm are distributed on the surfaces of TNTs evenly and attached strongly. The photocatalytic activities of the ZnO-TNTs nanocomposite are superior to those of P25, ZnO, TNTs and ZnO-anatase TiO(2) (TNP) nanocomposite in the oxidation of rhodamine B Under UV light irradiation. A comparison of the photocatalytic activities between different catalysts is discussed. Furthermore, we also find that the ZnO-TNT nanocomposite shows very favorable recycle Use potential, because they have a high sedimentation rate and their photocatalyric activity is only slightly decreased even after five times of repeated uses. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：49 / 54

页数：6

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