Au or Ag nanoparticle-decorated 3D urchin-like TiO2 nanostructures: Synthesis, characterization, and enhanced photocatalytic activity

被引：45

作者：

Xiang, Liqin ^{[1
]}

Zhao, Xiaopeng ^{[1
]}

Shang, Chaohong ^{[1
]}

Yin, Jianbo ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Smart Mat Lab, Dept Appl Phys, Xian 710072, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 403卷

基金：

中国国家自然科学基金;

关键词：

Au or Ag nanoparticles; Urchin-like TiO2; Surface plasmon; Quenched photoluminence; Photodegradation; SILVER NANOPARTICLES; GOLD; FILMS; NANOFIBERS; PARTICLES; OXIDE; PD;

D O I：

10.1016/j.jcis.2013.04.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The semiconductors decorated with noble metals have attracted increasing attention due to their interesting physical and chemical properties. Here, 3D urchin-like hierarchical TiO2 nanostructures decorated with Au or Ag nanoparticles were prepared by wet-chemical process. The morphology and structure were characterized by different techniques. It shows that Au or Ag nanoparticles with narrow distribution are uniformly loaded on urchin-like TiO2 nanostructures, and the resulted composite nanostructures show distinct surface plasmon absorption band and quenched photoluminence compared to pure TiO2 nanostructures. Photocatalytic tests show both Au-decorated TiO2 and Ag-decorated TiO2 exhibit enhanced photocatalytic activity for photodegradation of methyl blue in water. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：22 / 28

页数：7

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