TiO_2悬浮体系光电化学还原金的研究  

THE PHOTOELECTROCHEMICAL REDUCTION OF GOLD USING TiO_2 SUSPENSION

作　　者：高翠琴[1] 简翠英[1] 董庆华[1] 

机构地区：[1]武汉大学化学系

出　　处：《武汉大学学报（自然科学版）》1991年第1期68-72,共5页Journal of Wuhan University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：本文研究了 Au(Ⅲ)在 TiO_2悬浮体系中的光电化学还原反应,其还原速率与光源的强度和光谱分布,TiO_2用量有关。在 TiO_2粉粒上担载催化剂和在溶液中添加空穴捕获剂,均能加速还原反应。实现了利用太阳能从含金的溶液中提取金。对 Au(Ⅲ)在 TiO_2粉粒上的光电化学法还原机理进行了讨论。The rate of photoelectrochemical reduction of gold in TiO_2 suspension was measured.The rate of reduction was related to the intensity and spectral of light source and quantity of TiO_2 powder used.Loading Pt on TiO_2 powder and addition of C_2H_5OH in suspension system made the reduction more effici- ent.The photoelectrochemical reduction of gold in dilute TiO_2 suspension irradiated with sun light has been achieved.The mechanism of photoeleectro- chemical reduction of gold was discussed.

关 键 词：金 还原 光电化学 悬浮体系 TIO2 

分 类 号：O614.123[理学—无机化学]