Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 4, Pages 976-980Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201608593
Keywords
heterogeneous catalysis; hydrogen evolution; organic-inorganic hybrid systems; photocatalysis; syngas
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Funding
- International Science and Business Belt Program through the Ministry of Science, ICT and Future Planning [2015K000287]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2014R1A1A1007625, NRF-2014R1A6A1030732]
- National Research Foundation of Korea [2014R1A1A1007625] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Visible-light irradiation of a ternary hybrid catalyst prepared by grafting a dye, an H-2 evolving Co-III catalyst and a CO-producing Re-I catalyst on TiO2 have been found to produce both H-2 and CO (syngas) in CO2-saturated N, N-dimethyl formamide (DMF)/water solution containing a 0.1M sacrificial electron donor. The H-2/CO ratios are effectively controlled by changing either the water content of the solvent or the molar ratio of the ReI and CoIII catalysts ranging from 1:2 to 15:1. The controlled syngas formation is discussed in terms of competitive electron flow from TiO2 to each of the CO2-reduction and hydrogen-evolving sites depending on the efficiencies of the two catalytic reaction cycles under given reaction conditions.
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