Synthesis and UV-visible-light photoactivity of noble-metal-SrTiO3 composites

被引：99

作者：

Subramanian, V

Roeder, RK

Wolf, EE ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA

[2] Univ Notre Dame, Notre Dame Radiat Lab, Notre Dame, IN 46556 USA

[3] Univ Notre Dame, Dept Mech & Aerosp Engn, Notre Dame, IN 46556 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2006年 / 45卷 / 07期

关键词：

D O I：

10.1021/ie050693y

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The photocatalytic activity of strontium titanate (SrTiO3) perovskite films has been examined and compared with that of commercially available titania (TiO2, Degussa P25) in the degradation of a model pollutant. Victoria Blue dye. The effects of pH, synthesis temperature, and Sr/Ti ratio in the synthesis of the perovskite were examined. SrTiO3 was prepared using Ag, Pt, or Au and characterized using optical and surface analysis methods. We found no clear evidence of substitution of the noble metal into the SrTiO3 lattice, and most metal existed as zerovalent metal deposits. Addition of Ag to SrTiO3 showed the most promising catalytic activity toward dye degradation. Degradation of the dye under UV-visible light was also observed to be enhanced only for Ag-SrTiO3.

引用

页码：2187 / 2193

页数：7

共 20 条

[1] Nanoparticles of SrTiO3 prepared by gel to crystallite conversion and their photocatalytic activity in the mineralization of phenol [J].