Facile Synthesis of Hierarchical Hollow Mesoporous Ag/WO3 Spheres with High Photocatalytic Performance

被引：16

作者：

Liu, Baixiong ^{[1
,2
]}

Wang, Jinshu ^{[1
]}

Li, Hongyi ^{[1
]}

Wu, Junshu ^{[1
]}

Zhou, Meiling ^{[1
]}

Zuo, Tieyong ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] Jiangxi Univ Sci & Technol, Inst Res & Engn, Ganzhou 341000, Jiangxi, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 06期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Mesoporous; Hollow Sphere; WO3; Doping; Photocatalysis; TIO2; DEGRADATION; ZNO; FILMS; WO3; COMPOSITES; DEPOSITION; PARTICLES; OXIDATION; GROWTH;

D O I：

10.1166/jnn.2013.7469

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hollow mesoporous tungsten trioxide spheres (HMTTS) have been synthesized by spray drying method combined with proper calcination and Ag/HMTTS are prepared on the basis of a silver mirror reaction. HMTTS are composed of nanoparticles with diameter of 20-70 nm. The accumulation of nanoparticles generates pores with the mean pore size of about 45 nm. The formation mechanism of hollow mesoporous structure is studied in this work. Ag in WO3 narrows the band gap and derceases the recombination possibility of the photogenerated electron hole pairs, which enhance photocatalytic activity of Ag/WO3 composites. The degradation rate of methylene blue is 98.16% under UV light illumination for 75 min and 49.07% under visible light irradiation for 150 min by Ag/WO3 composites.

引用

页码：4117 / 4122

页数：6

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