Tailoring the photocatalytic activity of nanoparticulate zinc oxide by transition metal oxide doping

被引：62

作者：

Dodd, Aaron ^{[1
,3
]}

McKinley, Allan ^{[1
]}

Tsuzuki, Takuya ^{[2
]}

Saunders, Martin ^{[3
]}

机构：

[1] Univ Western Australia, Sch Biomed Biomol & Chem Sci, Crawley, WA 6009, Australia

[2] Adv Nanotechnol Ltd, Welshpool, WA 6106, Australia

[3] Univ Western Australia, Ctr Microscopy Characterisat & Anal, Crawley, WA 6009, Australia

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 114卷 / 01期

基金：

澳大利亚研究理事会;

关键词：

Oxides; Semiconductors; Chemical synthesis; OPTICAL-PROPERTIES; ZNO NANOPARTICLES; PARTICLE-SIZE; THIN-FILMS; MN; DECOMPOSITION; OXIDATION; ELECTRON;

D O I：

10.1016/j.matchemphys.2008.09.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The successful use of nanoparticulate ZnO in applications such as UV-screening agents or photocatalyst for the destruction of chemical waste requires the development of techniques for controlling its photocatalytic activity. In this study, we have investigated transition metal doping as a means of achieving this goal. Powders of ZnC, MnxZn1-xO. and CoxZn1-xO were synthesised by a three-stage process consisting of high-energy mechanical milling, heat treatment, and washing. The photocatalytic activity of these powders was evaluated using the spin-trapping technique with electron paramagnetic resonance spectroscopy. It was found that the photocatalytic activity of CoxZn1-xO progressively decreased with the doping level. In contrast, the activity of MnxZn1-xO initially increased with doping up to a level of 2 mol% and thereafter declined. These results demonstrate that doping with transition metal oxides can be used to tailor the photocataiytic properties of nanoparticulate ZnO. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：382 / 386

页数：5

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