Electrochemical Study of [Ni6(¥ì3-Se)2(¥ì4-Se)3(dppf)3] Cluster and Its Catalytic Activity towards the Electrochemical Reduction of Carbon Dioxide

Bulletin of the Korean chemical society

Deog-Su Park¹  Hak Myoung Lee¹  Sung-Chul Shin¹  Hyun Park¹  Yoon-Bo Shim¹  Md. Abdul Jabbar¹ 

关键词: Redox behavior of metal cluster;    Surface modification;    Electrocatalysis;    Electrochemical reduction of CO2;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The redox behavior of a [Ni₆(�?₃-Se)₂(�?₄-Se)₃(Fe(�? ⁵-C₅H₄P-Ph₂)₂)₃] (= [Ni-Se-dppf], dppf = 1,1-bis(diphenylphosphino) ferrocene) cluster was studied using platinum (Pt) and glassy carbon electrodes (GCE) in nonaqueous media. The cluster showed electrochemical activity at the potential range between +1.6 and ?1.6 V. In the negative region (0 to ?1.6 V), the cluster exhibited two-step reductions. The first step was one-electron reversible, while the second step was a five-electron quasi-reversible process. On the other hand, in the positive region (0 to +1.6 V), the first step involved one-electron quasi-reversible process. The applicability of the cluster was found towards the electrocatalytic reduction of CO₂ and was evaluated by experiments using rotating ring disc electrode (RRDE). RRDE experiments demonstrated that two electrons were involved in the electrocatalytic reduction of CO₂ to CO at the Se-Ni-dppf-modified electrode.

【 授权许可】

Unknown