Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 46, Pages 15076-15080Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201808104
Keywords
Fe2O3; heterostructures; metal-organic compounds; TiO2; water oxidation
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Funding
- National Research Foundation (NRF) of Singapore via the NRF investigatorship [NRF-NRFI2016-04]
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Designing advanced structures for heterojunction photocatalysts is an effective approach to enhance their performance toward solar-energy conversion. Herein we develop a facile synthetic strategy for the fabrication of Fe2O3-TiO2 microdumbbells. With the assistance of preferentially adsorbed hexadecylamine molecules, amorphous TiO2 nanospheres with tunable size are grown at the two ends of Fe-based metal-organic compound microrods. Subsequent annealing of the hybrid obtained leads to the formation of a novel heterostructured Fe2O3-TiO2 microdumbbell photocatalyst. Owing to the heterojunction formed and the unique structure, Fe2O3-TiO2 microdumbbells with optimized composition and morphology show enhanced performance for photoelectrochemical water oxidation, compared to monophasic Fe2O3 and TiO2 materials as well as physical mixtures thereof.
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