One pot synthesis of Ag nanoparticle modified ZnO microspheres in ethylene glycol medium and their enhanced photocatalytic performance

被引：56

作者：

Tian, Chungui ^{[1
]}

Li, Wei ^{[1
]}

Pan, Kai ^{[1
]}

Zhang, Qi ^{[1
]}

Tian, Guohui ^{[1
]}

Zhou, Wei ^{[1
]}

Fu, Honggang ^{[1
]}

机构：

[1] Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2010年 / 183卷 / 11期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Photocatalysis; ZnO; Ag modification; Composites; One-pot synthesis; NANO-SIZED SEMICONDUCTOR; ZINC-OXIDE; LARGE-SCALE; HETEROSTRUCTURE NANOCRYSTALS; PHOTOCORROSION INHIBITION; METAL NANOPARTICLES; TITANIUM-DIOXIDE; DEGRADATION; SHAPE; TIO2;

D O I：

10.1016/j.jssc.2010.09.020

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Ag nanoparticles (NPs) modified ZnO microspheres (Ag/ZnO microspheres) were prepared by a facile one pot strategy in ethylene glycol (EG) medium. The EG played two important roles in the synthesis: it could act as a reaction media for the formation of ZnO and reduce Ag to Ag. A series of the characterizations indicated the successful combination of Ag NPs with ZnO microspheres. It was shown that Ag modification could greatly enhance the photocatalytic efficiency of ZnO microspheres by taking the photodegradation of Rhodamine B as a model reaction. With appropriate ratio of Ag and ZnO, Ag/ZnO microspheres showed the better photocatalytic performance than commercial Degussa P-25 TiO2. Photoluminescence and surface photovoltage spectra demonstrated that Ag modification could effectively inhibit the recombination of the photoinduced electron and holes of ZnO. This is responsible for the higher photocatalytic activity of Ag/ZnO composites. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：2720 / 2725

页数：6

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