THERMAL AND PHOTOCHEMICAL FORMATION OF SMALL GOLD COLLOIDS IN SOL-GEL FILMS

被引：4

作者：

KATAYAMA, Y

SASAKI, M

ANDO, E

机构：

[1] Asahi Glass Co., Ltd., Kanagawa-ku, Yokohama, 221, Hazawa-cho

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 178卷

关键词：

D O I：

10.1016/0022-3093(94)90289-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The formation of small gold colloids in SiO2-TiO2 sol-gel films on soda-lime glass was investigated using ultraviolet-visible (UV-VIS) sectroscopy and electron microscopy. Conventional thermal reduction of gold ions in sol-gel films tended to form large particles due to growth or aggregation causing a hazy appearance in the high concentration range. It was found that a haze-free deep blue tinted film could be prepared by UV irradiations of the dried gel film before annealing at 500 degrees C. Colloids with a narrow size distribution were formed in this film. Sufficient photoreduction of metallic species from gold salts is a key factor for the excellent coloration.

引用

页码：227 / 232

页数：6

共 10 条

[1] NEAR-SURFACE NUCLEATION AND CRYSTALLIZATION OF AN ION-IMPLANTED LITHIA-ALUMINA-SILICA GLASS [J].