Journal
CHEMICAL COMMUNICATIONS
Volume 57, Issue 88, Pages 11637-11640Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc04942a
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Funding
- National Natural Science Foundation of China [22090030, 22090033, 22088102]
- Liaoning Revitalization Talents Program [XLYC1907078]
- Dalian Institute of Chemical Physics [DICP I202031]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB 17000000]
- CAS-TWAS Presidential fellowship
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Experimental results demonstrated that spatial charge separation can occur between the {010} and {001} facets of Bi2WO6 microplates. Further assembly of reduction and oxidation cocatalysts leads to a remarkable enhancement of photocatalytic water oxidation activity in the presence of Fe3+ ions, with reverse oxidation of Fe2+ to Fe3+ ions being completely inhibited. The driving force behind this enhancement is shown to be the difference in surface work function between the co-exposed facets, offering a feasible strategy for developing efficient photocatalysts for solar energy conversion.
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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