Structure and properties of TiO2-SiO2 prepared by sol-gel method in the presence of tartaric acid

被引：40

作者：

Izutsu, H

Nair, PK

Maeda, K

Kiyozumi, Y

Mizukami, F

机构：

[1] NATL INST MAT & CHEM RES,TSUKUBA,IBARAKI 305,JAPAN

[2] TAKI CHEM CO LTD,KAKOGAWA,HYOGO 67501,JAPAN

来源：

MATERIALS RESEARCH BULLETIN | 1997年 / 32卷 / 09期

关键词：

composites; oxides; sol-gel chemistry; Raman spectroscopy;

D O I：

10.1016/S0025-5408(97)00106-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Structure and textural properties of TiO2-SiO2 (Ti/Si = 0.2) composites prepared by sol-gel process in the presence of tartaric acid have been investigated. The specific surface areas of the TiO2-SiO2 gels calcined at 400 degrees C varied from ca. 250 m(2)/g to ca. 750 m(2)/g depending on the amount of tartaric acid used. After calcination at 800 degrees C, TiO2 in the composite started to crystallize to anatase phase. However, the intensity of the X-ray diffraction peak of anatase crystallite was different between the composites. Infrared and Raman spectra suggest that the Ti-O-Si bond is present in the TiO2-SiO2 in a wide calcination temperature range. Total acid amount in the calcined TiO2-SiO2 samples was proportional to the BET surface area. (C) 1997 Elsevier Science Ltd.

引用

页码：1303 / 1311

页数：9

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