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Synthesis and characterization of Ag/AgCl–activated carbon composites for enhanced visible light photocatalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
45409 46410 2014 11 PDF Available
Title
Synthesis and characterization of Ag/AgCl–activated carbon composites for enhanced visible light photocatalysis
Abstract

•Ag/AgCl–AC composites were synthesized by deposition-precipitation-photoreduction.•The composites were photocatalytically active for MO and phenol degradation under visible light.•A mechanism was proposed based on the roles of Ag, AgCl, and AC.

An adsorptive photocatalyst composite based on Ag/AgCl and activated carbon was proposed and investigated. The prepared composite was synthesized using impregnation-precipitation-photoreduction, and characterized by X-ray diffraction, transmission and scanning electron microscopies, X-ray photoelectron spectroscopy, N2 sorption, and ultraviolet–visible diffuse reflectance spectrophotometry. The photoactivity of the composite was studied for the degradation of methyl orange and phenol under visible light. A mechanism for synergistic adsorption and photocatalysis by Ag/AgCl–AC was proposed, where the silver acts as the electron/hole generator, and polarization of the photoinduced charges relative to AgCl facilitates electron–hole separation, while the AC works to concentrate the pollutant around the active sites.

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Keywords
Plasmon photocatalyst; Ag/AgCl; Visible light photocatalysis; Activated carbon
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Synthesis and characterization of Ag/AgCl–activated carbon composites for enhanced visible light photocatalysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 144, January 2014, Pages 702–712
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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