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Selective CO Production in Photoelectrochemical Reduction of CO2 with a Cobalt Chlorin Complex Adsorbed on Multiwalled Carbon Nanotubes in Water

Title
Selective CO Production in Photoelectrochemical Reduction of CO2 with a Cobalt Chlorin Complex Adsorbed on Multiwalled Carbon Nanotubes in Water
Authors
Aoi, ShokoMase, KentaroOhkubo, KeiSuenobu, TomoyoshiFukuzumi, Shunichi
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2017
Journal Title
ACS ENERGY LETTERS
ISSN
2380-8195JCR Link
Citation
vol. 2, no. 3, pp. 532 - 536
Publisher
AMER CHEMICAL SOC
Indexed
SCIE WOS
Abstract
Photoelectrochemical reduction of CO2 occurred using cobalt(II) chlorin (Co-II(Ch)) as a cathode active material adsorbed on multiwalled carbon nanotubes as a current collector in combination with a surface-modified BiVO4 photoanode with iron(III) oxide(hydroxide), FeO(OH), to produce CO with 83% Faradaic efficiency at an applied bias voltage of -1.3 V at the Co-II(Ch)-modified cathode vs the FeO(OH)/BiVO4/FTO photo anode under visible light irradiation in a CO2-saturated aqueous solution (pH 4.6). The difference in the oxidation potential of the FeO(OH)/BiVO4/FTO electrode under dark and that under light illumination was similar to 1.5 V, which was smaller than the band gap of BiVO4 (band gap energy approximate to 2.4 eV), indicating that the FeO(OH)/ BiVO4/FTO photoanode lowered the total bias that enabled simultaneous water oxidation and CO2 reduction.
DOI
10.1021/acsenergylett.6b00630
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자연과학대학 > 화학·나노과학전공 > Journal papers
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