浓碱溶液中铜阳极产物的阴极还原行为研究 Ⅰ. Cu(Ⅰ)产物的阴极还原  

Investigation on Electro-reduction Behaviour of Copper Anodic Products in Concentrated NaOH Solutions I. Electro-reduction of Cu(I) Products

作　　者：何建波[1] 李学良[1] 林建新[1] 

机构地区：[1]合肥工业大学化工学院,合肥230009

出　　处：《化学学报》1997年第11期1103-1107,共5页Acta Chimica Sinica

摘　　要：采用特定的电势扫描程序测出了浓碱溶液中Cu(Ⅰ)阳极产物的多重还原电流峰.根据各峰之间转化或竞争的关系,提出了亚铜氧化物的吸附成相和溶解沉淀两种途径共存的形成机理.为确定各阴极峰的归属,本文采用了将阴极电流峰与XRD和XPS特征峰进行半定量对比的方法.Specific potential scan programs have been used to investigate the electro-reduction behaviour of cuprous oxides anodically formed on copper electrodes in concentrated NaOH solutions. The obtained voltammograrns exhibit 3 cathodic current peaks. The peak charges are closely related to anodic polarization potential, polarization time and potential scan rate. These cathodic peaks have been semi-quantitatively contrasted with XRD and XPS spectra to identify anodic products reduced under each cathodic peak. A complex model including adsorption-crystallization and dissolution-precipitation mechanisms for the formation of cuprous oxide is proposed.

关 键 词：氧化亚铜 阴极还原 碱性介质 铜氧极产物 

分 类 号：O646.54[理学—物理化学]