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One-step synthesis and visible-light-driven H2 production from water splitting of Ag quantum dots/g-C3N4 photocatalysts.
- Source :
-
Journal of Alloys & Compounds . Nov2016, Vol. 686, p628-634. 7p. - Publication Year :
- 2016
-
Abstract
- Ag quantum dots/g-C 3 N 4 (Ag QDs/g-C 3 N 4 ) photocatalysts were directly obtained via a novel one-step method. The photocatalysts were composed of Ag quantum dots with an average diameter of ca.5 nm, which were dispersed uniformly on the surface of g-C 3 N 4 nanosheets. By using methanol as sacrificial reagent, the Ag QDs/g-C 3 N 4 photocatalysts exhibited higher photoactivity for hydrogen production than the AX = 0 photocatalyst under visible-light irradiation (λ > 420 nm). Among various photocatalysts prepared, the AX = 0.5% photocatalyst showed maximum hydrogen production efficiency, which was enhanced by 4.6 times compared to AX = 0 photocatalyst. Our findings demonstrated that the coupled Ag QDs could enhance the visible light absorption and serve as g-C 3 N 4 electron acceptor for effective charge separation, and further increased it’s photocatalytic activity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 686
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 117733922
- Full Text :
- https://doi.org/10.1016/j.jallcom.2016.06.076