SYNTHESIS AND CHARACTERIZATION OF MONODISPERSED ZNS - AG COLLOIDS

被引:8
作者
CHOU, KS
WU, TH
机构
[1] Institute of Chemical Engineering, National Tsing Hua University, Hsinchu
关键词
D O I
10.1016/0021-9797(91)90068-J
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The homogeneous coprecipitation of ZnS:Ag2S via the hydrolysis of thioacetamide (TAA) was investigated. The effects of silver content and the gas/liquid interfacial area per unit liquid volume on particle size and particle number concentration were specifically studied. In general, the resulting precipitates are spherical and have narrow size distributions. Particle growth rate was found to be dependent on silver content. On the other hand, particle number concentration increases with increasing gas-liquid contact area per unit liquid volume. We also observed that the spherical precipitates were actually composed of very small spherical crystallites or fibers, depending on the TAA/[Zn2+] ratio. A formation mechanism corresponding to our observation was therefore proposed. © 1991.
引用
收藏
页码:378 / 384
页数:7
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