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Hexagonal wurtzite CdS has been regarded as one of the most promising semiconductor for photocatalysis. However, its water splitting performance under visible-light irradiation is seriously limited due to the high… Click to show full abstract
Hexagonal wurtzite CdS has been regarded as one of the most promising semiconductor for photocatalysis. However, its water splitting performance under visible-light irradiation is seriously limited due to the high charge carriers recombination. In order to solve this limitation, we facilely prepared a 2D hexagonal wurtzite CdS nanoplate (HWCs) with exposed (110) and (112) crystal facets via water bath strategy. The visible-light responsibility of HWCs exhibited an obvious red shift and, accordingly, the band gap was narrowed from 2.31 to 2.12 eV. Besides, HWCs showed an excellent visible-light H2 evolution rate of ca. 6214.5 μmol h-1g-1 without cocatalysts due to the enhanced charge carrier’s separation between (110) and (112) crystal facets. Finally, a possible photocatalytic mechanism for HWCs was tentatively proposed. This work would be beneficial to design and fabricate powerful mono-component photocatalyst.
Journal Title: New Journal of Chemistry
Year Published: 2021
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