Enhanced visible-light photocatalytic activity and the mechanism study of WO3 nanosheets coupled with Ag3PO4 nanocrystals
Source abstract
Abstract
Abstract Highly efficient visible-light-driven Ag 3 PO 4 /WO 3 photocatalysts with different mole fractions of Ag 3 PO 4 nanocrystals have been synthesized via an in situ precipitation method. Characterization results showed the in situ growth of finely distributed Ag 3 PO 4 nanocrystals on the surface of the WO 3 nanosheets. Under visible light irradiation, the Ag 3 PO 4 /WO 3 photocatalysts exhibited enhanced photocatalytic activity compared with bare Ag 3 PO 4 or WO 3 for the degradation of methyl blue, and the highest activity was reached by the Ag 3 PO 4 /WO 3 hybrid photocatalyst with 20 at% of Ag 3 PO 4 . The observed improvement in photocatalytic activity is associated with the extended absorption in the visible light region resulting from the attached Ag 3 PO 4 nanocrystals, and the effective separation of photo-induced carriers at the Ag 3 PO 4 /WO 3 interfaces. In addition, on the basis of the quenching effects of different scavengers and estimated energy band positions, the mechanism of enhanced photocatalytic activity is proposed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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