Quadruple metal-based layered structure as the photocatalyst for conversion of carbon dioxide into a value added carbon monoxide with high selectivity and efficiency

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Metal-based layered structures are promising structures for use as photocatalysts, but ones that are capable of enabling a complete conversion of carbon dioxide (CO2) into a value added carbon monoxide (CO) are still limited. In this paper, a quadruple metal-based layered structure, composed of aluminium (Al), gallium (Ga), magnesium (Mg), and nickel (Ni), is reported which allows the photocatalytic conversion of CO2 into CO with a high selectivity close to 100% in the presence of water. The shifted oxidation states on the Ni and Mg ions than bivalent states lead to an increment in electronegativity for their neighboring oxygen (O) while the Ga and Al ions maintain their trivalent states, thereby enabling the O to adsorb a high amount of CO2. Furthermore, the quadruple metal-based layered structure without any use of scavengers is proven to give an approximately two-fold increase in photocatalytic activity compared to those with bi or triple metal-based structures.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2017-05
Language
English
Article Type
Article
Keywords

HYDROTALCITE-LIKE COMPOUNDS; DOUBLE HYDROXIDES; OXYGEN EVOLUTION; CO2 REDUCTION; OXIDE; WATER; CATALYST; ADSORPTION; ELECTRODES; TAKOVITE

Citation

JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.18, pp.8274 - 8279

ISSN
2050-7488
DOI
10.1039/c7ta01623a
URI
http://hdl.handle.net/10203/223903
Appears in Collection
EEW-Journal Papers(저널논문)
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