Apatite formation on TiO2 in simulated body fluid

被引：187

作者：

Kasuga, T ^{[1
]}

Kondo, H ^{[1
]}

Nogami, M ^{[1
]}

机构：

[1] Nagoya Inst Technol, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

JOURNAL OF CRYSTAL GROWTH | 2002年 / 235卷 / 1-4期

基金：

日本学术振兴会;

关键词：

biomaterials; growth from solutions; natural crystal growth; calcium compounds; phosphates; titanium compounds;

D O I：

10.1016/S0022-0248(01)01782-1

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

When compacts of the TiO2 powders having high photocatalytic activities were fight-illuminated beforehand in simulated body fluid (SBF) from an Hg lamp and subsequently held at 37degreesC, bonelike apatite crystals were formed on the surfaces. Color of the compacts was turned into bluey violet by the illumination, showing generation of Ti3+ and negative charging of the surface. X-ray photoelectron spectroscopic analysis showed that basic Ti-OH groups, which induce the apatite nucleation, is formed abundantly at the negatively charged surface of TiO2 by the light-illumination in SBF. This finding indicates that we are able to prepare novel bioactive materials controlled by photoexcitation of TiO2. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：235 / 240

页数：6

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