Crystal facet modulation of Bi2WO6 microplates for spatial charge separation and inhibiting reverse reaction.
Chem Commun (Camb)
; 57(88): 11637-11640, 2021 Nov 04.
Article
em En
| MEDLINE
| ID: mdl-34668908
ABSTRACT
We experimentally demonstrated that spatial charge separation can take place between the {010} and {001} facets of Bi2WO6 microplates. Further assembly of the reduction and oxidation cocatalysts leads to a remarkable enhancement of photocatalytic water oxidation activity in the presence of Fe3+ ions while the reverse oxidation of Fe2+ to Fe3+ ions is totally inhibited. The origin of the driving force is theoretically proven to be the difference in surface work function between the co-exposed facets, which shows a feasible strategy for developing efficient photocatalysts for solar energy conversion.
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MEDLINE
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En
Ano de publicação:
2021
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Article