Covalent Attachment of a Rhenium Bipyridyl CO2 Reduction Catalyst to Rutile TiO2

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• 作者：Chantelle L. Anfuso ; Robert C. Snoeberger ; III ; Allen M. Ricks ; Weimin Liu ; Dequan Xiao ; Victor S. Batista ; Tianquan Lian
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：May 11, 2011
• 年：2011
• 卷：133
• 期：18
• 页码：6922-6925
• 全文大小：750K
• 年卷期：v.133,no.18(May 11, 2011)
• ISSN：1520-5126

文摘

We have characterized the covalent binding of the CO₂ reduction electrocatalyst ReC0A (Re(CO)₃Cl(dcbpy) (dcbpy =4,4鈥?dicarboxy-2,2鈥?bipyridine)) to the TiO₂ rutile (001) surface. The analysis based on sum frequency generation (SFG) spectroscopy and density functional theory (DFT) calculations indicates that ReC0A binds to TiO₂ through the carboxylate groups in bidentate or tridentate linkage motifs. The adsorbed complex has the dcbpy moiety nearly perpendicular to the TiO₂ surface and the Re exposed to the solution in a configuration suitable for catalysis.