Preparation of size-controlled TiO2 nanoparticles and derivation of optically transparent photocatalytic films

被引：263

作者：

Chae, SY ^{[1
]}

Park, MK ^{[1
]}

Lee, SK ^{[1
]}

Kim, TY ^{[1
]}

Kim, SK ^{[1
]}

Lee, WI ^{[1
]}

机构：

[1] Inha Univ, Dept Chem, Inchon 402751, South Korea

来源：

CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 17期

关键词：

D O I：

10.1021/cm030171d

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：

TiO2 nanoparticles were prepared by hydrothermal reaction of titanium alkoxide stabilized in acidic ethanol/water solution. The sizes of particles have been controlled to the range of 7-25 nm by adjusting the concentration of Ti precursor and the composition of the solvent system. The TiO2 samples synthesized under this acidic ethanol/water environment were mainly primary particles in anatase phase without secondary structure. The suspension of as-prepared 7-nm-sized TiO2 nanoparticles demonstrates long-term stability, and has been applied successfully for the fabrication of ultra-transparent particulate TiO2 films. The photocatalytic efficiency of TiO2 films prepared from the 7-nm-sized nanoparticles was 1.6 times of that of films derived from Degussa P25 in decomposing gaseous 2-propanol.

引用

页码：3326 / 3331

页数：6

共 30 条

[1] ELECTRON-SPIN-RESONANCE EVIDENCE FOR THE PHOTO-FORMATION OF N2O- AND THE ELECTRON-TRANSFER FROM IT TO O2 AT 77-K ON TITANIUM-OXIDE GRAFTED ONTO POROUS VYCOR GLASS [J].