Preparation and characterization of TiO2/Fe2O3 binary mixed oxides and its photocatalytic properties

被引：221

作者：

Pal, B

Sharon, M

Nogami, G ^{[1
]}

机构：

[1] Kyushu Inst Technol, Dept Elect Engn, Tobata Ku, Kitakyushu 804, Japan

[2] Indian Inst Technol, Dept Chem, Bombay 400076, Maharashtra, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1999年 / 59卷 / 03期

关键词：

mixed oxide; iron-titania photocatalysts; photodegradation;

D O I：

10.1016/S0254-0584(99)00071-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Binary mixed oxide of Fe/Ti (1 : 1 composition) with homogeneous distribution of iron into the TiO(2) has been prepared by sol-gel impregnation using metal alkoxide precursors. The structural features of Fe/Ti mixed oxide fired at different temperatures (500, 700 and 900 degrees C) have been investigated by XRD, Mossbauer effect, FTIR, SEM, and TEM studies. Phase composition and crystallinity changes with increasing sintering temperature of the specimens. The mixed oxide exhibits excellence absorption (570-600 nm) in the visible spectral region. Photocatalytic activity of Fe/Ti oxide reduces to large extent at high sintering temperature of the sample due to the presence of increasing amount of inactive (Fe(2)TiO(5)) pseudobrookite phase. The sample sintered at 500 degrees C shows highest activity for the degradation of aqueous solution of O-Cresol. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：254 / 261

页数：8

共 25 条

[1] ELECTRON-PARAMAGNETIC RESONANCE STUDY OF TRANSITION-METAL-ION IMPREGNATED BROOKITE TITANIUM-DIOXIDE POWDERS [J].