Synthesis of TiO2nanocrystalline powder by aging at low temperature

被引：42

作者：

Seo, DS

Lee, JK

Kim, H

机构：

[1] Chosun Univ, Div Met & Mat Engn, Dept Mat Engn, Kwangju 501759, South Korea

[2] Seoul Natl Univ, Sch Mat Engn, Seoul 151742, South Korea

来源：

JOURNAL OF CRYSTAL GROWTH | 2001年 / 233卷 / 1-2期

关键词：

nanostructures; recrystallization; nanomaterials; semiconducting materials;

D O I：

10.1016/S0022-0248(01)01494-4

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Titanium hydroxide obtained from the reaction between TiOCl2 and NH4OH solutions was aged in boiling water or HCl solution at 60 degreesC for 24h, then anatase or rutile-typed TiO2 nanocrystalline powder with a large specific surface area was synthesized. The influence of the aging conditions on the crystallization, microstructure and specific surface area of the prepared TiO2 powders was investigated, It was round that the powder aged in boiling water showed the anatase phase with spherical shape and the anatase or rutile powder with different particle shape was obtained by varying molar concentration of HCL The powder aged in HCl solution showed the largest specific surface area of 250 m(2)/g. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：298 / 302

页数：5

共 13 条

[1]

BAHNEMANN D, 1991, SOLAR ENERGY MAT, V24, P594

[2] PHOTOCATALYTIC DECOMPOSITION OF CRUDE-OIL SLICKS USING TIO2 ON A FLOATING SUBSTRATE [J].