title: Widely Controllable Syngas Production by a Dye-Sensitized TiO2Hybrid System with ReIand CoIIICatalysts under Visible-Light Irradiation.
abstract: Visible-light irradiation of a ternary hybrid catalyst prepared by grafting a dye, an H2evolving CoIIIcatalyst and a CO-producing ReIcatalyst on TiO2have been found to produce both H2and CO (syngas) in CO2-saturated N,N-dimethyl formamide (DMF)/water solution containing a 0.1 m sacrificial electron donor. The H2/CO ratios are effectively controlled by changing either the water content of the solvent or the molar ratio of the ReIand CoIIIcatalysts ranging from 1:2 to 15:1. The controlled syngas formation is discussed in terms of competitive electron flow from TiO2to each of the CO2-reduction and hydrogen-evolving sites depending on the efficiencies of the two catalytic reaction cycles under given reaction conditions.
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 30019, South Korea.
authors.forename: Jong-Su
authors.initials: JS
authors.lastname: Lee
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 30019, South Korea.
authors.forename: Dong-Il
authors.initials: DI
authors.lastname: Won
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 30019, South Korea.
authors.forename: Won-Jo
authors.initials: WJ
authors.lastname: Jung
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 30019, South Korea.
authors.forename: Ho-Jin
authors.initials: HJ
authors.lastname: Son
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 30019, South Korea.
authors.forename: Chyongjin
authors.initials: C
authors.lastname: Pac
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong, 30019, South Korea.
authors.forename: Sang Ook
authors.initials: SO
authors.lastname: Kang
keywords: heterogeneous catalysis; hydrogen evolution; organic-inorganic hybrid systems; photocatalysis; syngas