Covalent Attachment of Catalyst Molecules to Conductive Diamond: CO2 Reduction Using 鈥淪mart鈥?Electrodes

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• 作者：Shu A. Yao ; Rose E. Ruther ; Linghong Zhang ; Ryan A. Franking ; Robert J. Hamers ; John F. Berry
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：September 26, 2012
• 年：2012
• 卷：134
• 期：38
• 页码：15632-15635
• 全文大小：288K
• 年卷期：v.134,no.38(September 26, 2012)
• ISSN：1520-5126

文摘

We report here covalent attachment of a catalytically active cobalt complex onto boron-doped, p-type conductive diamond. Peripheral acetylene groups were appended on a cobalt porphyrin complex, and azide鈥揳lkyne cycloaddition was used for covalent linking to a diamond surface decorated with alkyl azides. The functionalized surface was characterized by X-ray photoelectron spectroscopy and Fourier transform IR spectroscopy, and the catalytic activity was characterized using cyclic voltammetry and FTIR. The catalyst-modified diamond surfaces were used as 鈥渟mart鈥?electrodes exhibiting good stability and electrocatalytic activity for electrochemical reduction of CO₂ to CO in acetonitrile solution.