【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.更多还原

【Abstract】 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.更多还原