Selective Formic Acid Production via CO2 Reduction with Visible Light Using a Hybrid of a Perovskite Tantalum Oxynitride and a Binuclear Ruthenium(II) Complex

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• 作者：Fumiaki Yoshitomi ; Keita Sekizawa ; Kazuhiko Maeda ; Osamu Ishitani
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：June 17, 2015
• 年：2015
• 卷：7
• 期：23
• 页码：13092-13097
• 全文大小：321K
• ISSN：1944-8252

文摘

A hybrid material consisting of CaTaO₂N (a perovskite oxynitride semiconductor having a band gap of 2.5 eV) and a binuclear Ru(II) complex photocatalytically produced HCOOH via CO₂ reduction with high selectivity (>99%) under visible light (位 > 400 nm). Results of photocatalytic reactions, spectroscopic measurements, and electron microscopy observations indicated that the reaction was driven according to a two-step photoexcitation of CaTaO₂N and the Ru photosensitizer unit, where Ag nanoparticles loaded on CaTaO₂N with optimal distribution mediated interfacial electron transfer due to reductive quenching.