Enhanced photocatalytic activity of ZnO nanotetrapods

被引：228

作者：

Wan, Q ^{[1
]}

Wang, TH

Zhao, JC

机构：

[1] Hunan Univ, Micro Nano Technol Res Ctr, Changsha 410082, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing, Peoples R China

[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 08期

关键词：

D O I：

10.1063/1.2034092

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The photocatalytic characteristics of the tetrapod-branched ZnO nanostructures synthesized by thermal evaporation method are investigated. The fitting of absorbance maximum plot versus time indicates an exponential decay, suggesting the photodegradation of Rhodamine B catalyzed by the ZnO nanotetrapod is a pseudo first-order reaction. These results demonstrate that the photocatalytic activity of ZnO nanotetrapod is much better than that of P25 TiO2 and ZnO powders. The slow electron/hole recombine rate due to the abundant surface states, as well as the high surface-to-volume ratio will effectively enhance the photocatalytic activity of the ZnO nanotetrapod. (c) 2005 American Institute of Physics.

引用

页数：3

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