在CdS水悬浮液中O_2光吸收的pH效应  

pH EFFECT OF O_2 PHOTOUPTAKE IN AQUEOUS SUSPENSION OF CdS

作　　者：席婵娟[1] 李庆霖[1] 金振声[1] 

机构地区：[1]中国科学院兰州化学物理研究所

出　　处：《感光科学与光化学》1994年第2期177-181,共5页Photographic Science and Photochemistry

基　　金：国家自然科学基金

摘　　要：在ＣｄＳ水悬浮液中Ｏ＿２光吸收的ｐＨ效应席婵娟，李庆霖，金振声（中国科学院兰州化学物理研究所，兰州７３００００）关键词光吸收，光腐蚀，硫化镉以ＣｄＳ为基础的光催化剂在水悬浮液中光照时，有严重的光腐蚀发生，ＣｄＳ的光腐蚀有两类￣［１，２］：直接光腐蚀，...The pH effect of photouptake of O_2 on CdS and Pt/CdS was investigated. The resultindicates that there are two types of mechanism for O_2 photouptake aqueous dispersionsof CdS and Pt/CdS. In acidic condition,O_2 photouptake proceeds continuously and canbe described with 1st order rate equation. In basic condition,O_2 photouptake ceaises afterhalf an hour irradiation,which is illustrated by following equations:Then,the surface of CdS is covered by Cd (OH)_2 and the O_2 uptake is hindered.

关 键 词：光吸收 光腐蚀 硫化镉 PH值 

分 类 号：O614.242[理学—无机化学]