| Autor: |
Angeles Navarro M; Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain. q12esmem@uco.es.; School of Chemistry, The University of Lincoln, Green Lane, Lincoln LN6 7TS, UK. sroy@lincoln.ac.uk., Sain S; School of Chemistry, The University of Lincoln, Green Lane, Lincoln LN6 7TS, UK. sroy@lincoln.ac.uk., Wünschek M; Institute of applied Physics, TU Vienna, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria., Pichler CM; Institute of applied Physics, TU Vienna, Wiedner Hauptstraße 8-10, 1040 Vienna, Austria.; Centre of electrochemical and surface technology, Viktor Kaplan Straße 2, 2700 Wiener Neustadt, Austria., Romero-Salguero FJ; Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain. q12esmem@uco.es., Esquivel D; Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain. q12esmem@uco.es., Roy S; School of Chemistry, The University of Lincoln, Green Lane, Lincoln LN6 7TS, UK. sroy@lincoln.ac.uk. |
| Abstrakt: |
A molecular cobalt phthalocyanine (CoPc) catalyst has been integrated in an ethylene-bridged periodic mesoporous organosilica (PMO) to fabricate a hybrid material, CoPc-PMO, that catalyses CO 2 reduction to CO in a photocatalytic system using [Ru(bpy) 3 ] 2+ (bpy = 2,2'-bipyridine) as a photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1 H -benzo[ d ]imidazole (BIH) as an electron donor. CoPc-PMO displays a Co-based turnover number (TON CO ) of >6000 for CO evolution with >70% CO-selectivity after 4 h irradiation with UV-filtered simulated solar light, and a quantum yield of 1.95% at 467 nm towards CO. This system demonstrates a benchmark TON CO for immobilised CoPc-based catalysts towards visible light-driven CO 2 reduction. |
