Abstract
Abstract Highly efficient visible-NIR photocatalytic activity of Ag-RGO@{010}BiVO4/RGO@{110}BiVO4 photocatalysts are successfully synthesized via an in situ photoreduction method. The transverse electric TE mode accompanied by surface plasmon collective excitations of RGO compel photocatalyst to absorb NIR light. Significantly, the degradation rate of 15%Ag-RGO@{010}BiVO4/RGO@{110}BiVO4 photocatalysts can reach the highest 98.3% and 66.1%, and the mineralization yield can reach to 97.22% and 74.25% within 90 min under visible and 180 min NIR irradiation, respectively. The extraordinary visible and NIR photocatalytic activity is attributed to resonance effect of local electric field formed by transverse electric TE mode of RGO and local magnetic field formed by transverse magnetic TM of plasmonic Ag can accelerate carrier separation, and energetic carriers induce by SPR effect of plasmonic Ag nanoparticles can directly oxidize organic pollutants to small molecules. The as-synthesized Ag-RGO@{010}BiVO4/RGO@{110}BiVO4 hybrid photocatalysts exhibit excellent wide-spectrum response to wavelengths ranging from visible to near-infrared (NIR), indicating its potential for effective utilization of solar energy.
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