Origin of Low Photocatalytic Activity of Rutile TiO2

被引：49

作者：

Jung, Hyun Suk ^{[2
]}

Kim, Hyungtak ^{[1
]}

机构：

[1] Hongik Univ, Sch Elect & Elect Engn, Seoul 121791, South Korea

[2] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea

来源：

ELECTRONIC MATERIALS LETTERS | 2009年 / 5卷 / 02期

关键词：

Photocatalyst; Nanoparticle; Rutile; Anatase; Charge recombination; TRANSFORMATION;

D O I：

10.3365/eml.2009.06.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rutile TiO2 nanoparticles were synthesized using the colloidal sol-gel process and their photocatalytic properties were characterized in comparison with anatase TiO2 nanoparticles. The synthesized rutile nanoparticles were found to possess higher surfaces area than the anatase nanoparticles and to exhibit lower photocatalytic activities, demonstrating that rutile TiO2 has intrinsically low photocatalytic properties. The photoluminescence (PL) study suggested that the inferior photocatalytic activity of rutile nanoparticles is correlated with the intrinsic recombination of photogenerated electron-hole pairs.

引用

页码：73 / 76

页数：4