Mesoporous Au/TiO2 Nanocomposite Microspheres for Visible-Light Photocatalysis

被引：49

作者：

Wang, Guannan ^{[1
]}

Wang, Xiaofei ^{[1
]}

Liu, Junfeng ^{[1
]}

Sun, Xiaoming ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2012年 / 18卷 / 17期

基金：

北京市自然科学基金;

关键词：

composite materials; gold; mesoporous materials; photochemistry; titanium; GOLD NANOPARTICLES; COLLOIDAL SPHERES; HIGHLY EFFICIENT; TIO2; TITANIA; WATER;

D O I：

10.1002/chem.201101410

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mesoporous Au/TiO2 nanocomposite microspheres have been synthesized by using a microemulsion-based bottom-up self-assembly (EBS) process starting from monodisperse gold and titania nanocrystals as building blocks. The microspheres had large surface areas (above 270 m2?g-1) and open mesopores (about 5 nm), which led to the adsorption-driven concentration of organic molecules in the vicinity of the microspheres. Au nanoparticles, which were stably confined within the microspheres, enhanced the absorption over the broad UV/Vis/NIR spectroscopic range, owing to their strong surface plasmon resonance (SPR); as a result, the Au nanoparticles promoted the visible-light photo-induced degradation of organic compounds.

引用

页码：5361 / 5366

页数：6

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