Robust Binding between Carbon Nitride Nanosheets and a Binuclear Ruthenium(II) Complex Enabling Durable, Selective CO2 Reduction under Visible Light in Aqueous Solution. Issue 17 (7th April 2017)

• Record Type: Journal Article
• Authors: Kuriki, Ryo; Yamamoto, Muneaki; Higuchi, Kimitaka; Yamamoto, Yuta; Akatsuka, Masato; Lu, Daling; Yagi, Shinya; Yoshida, Tomoko; Ishitani, Osamu; Maeda, Kazuhiko
• Is Part Of: Angewandte Chemie international edition. Volume 56:Issue 17(2017)
• Page Start: 4867
• Page End: 4871
• Publication Date: 2017-04-07
• Subjects: artificial photosynthesis -- carbon nitride -- CO2 fixation -- formate -- heterogeneous photocatalysis; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201701627
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: Carbon nitride nanosheets (NS‐C3 N4 ) were found to undergo robust binding with a binuclear ruthenium(II) complex (RuRu′ ) even in basic aqueous solution. A hybrid material consisting of NS‐C3 N4 (further modified with nanoparticulate Ag) andRuRu ′ promoted the photocatalytic reduction of CO2 to formate in aqueous media, in conjunction with high selectivity (approximately 98 %) and a good turnover number (>2000 with respect to the loaded Ru complex). These represent the highest values yet reported for a powder‐based photocatalytic system during CO2 reduction under visible light in an aqueous environment. We also assessed the desorption ofRuRu ′ from the Ag/C3 N4 surface, a factor that can contribute to a loss of activity. It was determined that desorption is not induced by salt additives, pH changes, or photoirradiation, which partly explains the high photocatalytic performance of this material. Abstract : Fixed to fix : Carbon nitride nanosheets bind strongly with a binuclear ruthenium(II) complex even in basic aqueous solution, enabling durable, selective CO2 reduction into formate under visible light.