Synthesis of ultrafine TiO2 by citrate gel method

被引：51

作者：

Dhage, SR

Pasricha, R

Ravi, V ^{[1
]}

机构：

[1] Natl Chem Lab, Phys & Mat Chem Div, Pune 411008, Maharashtra, India

[2] Natl Chem Lab, Ctr Mat Characterizat, Pune 411008, Maharashtra, India

来源：

MATERIALS RESEARCH BULLETIN | 2003年 / 38卷 / 11-12期

关键词：

ceramics; oxides; chemical synthesis; thermogravimetric analysis (TGA); X-ray diffraction;

D O I：

10.1016/S0025-5408(03)00180-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A gel was formed when a mixture of TiOCl2 and citric acid is heated on a water bath. An ultrafine powder of TiO2 in the anatase phase is formed, when the gel was decomposed at 623 K. The anatase phase is converted into rutile phase on annealing at higher temperatures >773 K. These powders are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and surface area measurements. The average particle size obtained for anatase phase is 3.5 nm whereas it is 45 urn for rutile phase. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1623 / 1628

页数：6

共 18 条

[1] PHOTOCATALYTIC HYDROGENATION OF CH3CCH WITH H2O ON SMALL-PARTICLE TIO2 - SIZE QUANTIZATION EFFECTS AND REACTION INTERMEDIATES [J].