摘要
Marcus电子转移理论的主要成果之一是预言了电子转移反应反转区的存在.从实验上验证Marcus反转区仍是一个热点问题.通过对γ-MnO_2/K_3[Fe(CN)_6]溶液界面平带电位、极化曲线的测量，计算了在极化条件下，γ-MnO_2导带的电子直接转移到溶液中氧化态物种[Fe(CN)_6]^(3-)空电子能级上的速率常数k_(et),logk_(et)对外加电位作图，观察到了Marcus反转区.从理论上也论证了在半导体/溶液界面上的直接电子转移反转区的存在.
One of the main achievements of Marcus electron-transfer theory is the predictions of the existence of normal and inverted regions.Conformation of the existence of inverted regions has been a hot point by experiments.The direct electron-transfer rate constants were worked out between conduction band and the γ-MnO_2/K_3[Fe(CN)_6] soluton interface by measuring the flat band potentials and the Tafel plots and Marcus type inverted regions were observed from logket～V(applied bias potential) curve.Furthermore,the existence of inverted regions was demonstrated theoretically in direct electron transfers between the semiconductor/electrolyte interface.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2001年第7期636-640,共5页
Acta Physico-Chimica Sinica
基金
国家自然科学基金(29963002)资助项目
