The study on photochromism activity of Ag-TiO2 aerogel

被引：0
|
作者：
Jiang, T. [1 ]
Miao, L.
Tanemura, S.
Tanemura, M. [1 ]
Xu, G.
机构：
[1] Nagoya Inst Technol, Grad Sch Engn, Dept Environm Technol, Showa Ku, Nagoya, Aichi 4668555, Japan
来源：
TRANSACTIONS OF THE MATERIALS RESEARCH SOCIETY OF JAPAN, VOL 32, NO 3 | 2007年 / 32卷 / 03期
关键词：
Ag-TiO2; aerogels; photochromism; particle size; crystal structure; surrounding media;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ag loaded TiO2 aerogels were synthesized by sol-gel and supercritical drying methods. Anatase-TiO2 phase was obtained after post-annealed at 400 degrees C for 4 hrs in air. AIM image revealed that post-annealed sample at 400 degrees C consisted by the rod-like particles with several hundreds nanometer. The colorless sample changed to dark brown after the UV irradiation, and returned to the initial state after the white light irradiation. The absorption spectra exhibited a little red shift after the UV irradiation, which may attribute to the appearance of metal Ag particles in TiO2 matrix. Due to the poor crystal quality and no aggregation for Ag+ during post-annealed process, no big wavelength tuning had happened as speculated based on particle size and surrounding media.
引用
收藏
页码：751 / 754
页数：4
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