Journal
DALTON TRANSACTIONS
Volume 45, Issue 18, Pages 7720-7727Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt00530f
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Funding
- National Natural Science Foundation of China [21406054, 21376061]
- Natural Science Foundation of Hebei Province [B2015208005, B2015208010, B2016403011]
- Young Talents Program in University of Hebei Province [BJ2016022]
- Natural Science Research Project in University of Hebei Province [QN2015031]
- Science Research Foundation Project of Shijiazhuang University of Economics [BQ201522]
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Bi4O5I2 and Bi5O7I ultrathin nanosheets are prepared via a facile route at room temperature. The composition, morphology, energy bands and photocatalytic properties of the materials are investigated systematically using different characterization techniques. The results reveal that Bi4O5I2 and Bi5O7I can be easily obtained by adjusting the OH- concentration at different pH values. Both Bi4O5I2 and Bi5O7I have the morphology of ultrathin nanosheets and a high surface area. With the increase of the Bi content, the adsorption edge of the samples shifts towards a shorter wavelength and the valence band edge potential becomes more positive. Thus, they exhibit a superior photocatalytic efficiency for the degradation of phenol under visible light irradiation compared to BiOI.
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