Artificial Z-Scheme Constructed with a Supramolecular Metal Complex and Semiconductor for the Photocatalytic Reduction of CO2

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• 作者：Keita Sekizawa ; Kazuhiko Maeda ; Kazunari Domen ; Kazuhide Koike ; Osamu Ishitani
• 刊名：The Journal of the American Chemical Society
• 出版年：2013
• 出版时间：March 27, 2013
• 年：2013
• 卷：135
• 期：12
• 页码：4596-4599
• 全文大小：234K
• 年卷期：v.135,no.12(March 27, 2013)
• ISSN：1520-5126

文摘

A hybrid for the visible-light-driven photocatalytic reduction of CO₂ using methanol as a reducing agent was developed by combining two different types of photocatalysts: a Ru(II) dinuclear complex (RuBLRu鈥?/b>) used for CO₂ reduction is adsorbed onto Ag-loaded TaON (Ag/TaON) for methanol oxidation. Isotope experiments clearly showed that this hybrid photocatalyst mainly produced HCOOH (TN = 41 for 9 h irradiation) from CO₂ and HCHO from methanol. Therefore, it converted light energy into chemical energy (螖G掳 = +83.0 kJ/mol). Photocatalytic reaction proceeds by the stepwise excitation of Ag/TaON and the Ru dinuclear complex on Ag/TaON, similar to the photosynthesis Z-scheme.