Hierarchical WO3 hollow shells:: Dendrite, sphere, dumbbell, and their photocatalytic properties

被引：539

作者：

Chen, Di ^{[1
]}

Ye, Jinhua ^{[2
]}

机构：

[1] Natl Inst Mat Sci, Photocatalyt Mat Ctr, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050047, Japan

[2] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2008年 / 18卷 / 13期

关键词：

D O I：

10.1002/adfm.200701468

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, hierarchical WO3 hollow shells: dendrites, spheres and dumbbells have been successfully synthesized by simply calcining the acid-treated PbWO4 and SrWO4 as precursors at 500 degrees C for 2h. These hollow structures were characterized using X-ray diffraction, scanning and transmission electron microscopies, Brunauer-Emmet-Teller surface area and diffuse reflectance spectroscopy, respectively. Possible formation mechanisms for hollow WO3 shells consisted of tiny nanoplatelets were investigated in detail. Comparing with commercial WO3 particles, all the obtained hollow shells with larger BET surface areas showed enhanced photocatalytic activities for the degradation of organic contaminants under visible light irradiation.

引用

页码：1922 / 1928

页数：7

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