Preparation and characterization of Ag@AgCl-doped fly ash cenospheres for photocatalytic applications

Preparation and characterization of Ag@AgCl-doped fly ash cenospheres for photocatalytic... A plasmonic photocatalyst composite based on Ag@AgCl and fly ash cenospheres was successfully prepared through a two-step method. X-ray diffraction analysis, scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy, and diffuse reflectance ultraviolet–visible spectroscopy were used to determine the structure and optical properties of the Ag@AgCl-doped fly ash cenospheres (denoted Ag@AgCl/FAC). SEM micrographs showed that Ag@AgCl was well deposited on the surface of the fly ash cenospheres. Photocatalytic experiment results showed that the degradation ratio increased with increasing dosage of Ag@AgCl/fly ash cenospheres; proper concentration of pollutant was important for the photocatalytic reaction for given amount of catalyst. Moreover, improved degradation of rhodamine B was observed at acidic conditions under visible-light irradiation. This excellent catalytic ability is mainly attributed to the formation of Ag nanoparticles on the surface of the fly ash cenospheres and the high separation efficiency of photoelectron–hole pairs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Preparation and characterization of Ag@AgCl-doped fly ash cenospheres for photocatalytic applications

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2647-z
Publisher site
See Article on Publisher Site

Abstract

A plasmonic photocatalyst composite based on Ag@AgCl and fly ash cenospheres was successfully prepared through a two-step method. X-ray diffraction analysis, scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy, and diffuse reflectance ultraviolet–visible spectroscopy were used to determine the structure and optical properties of the Ag@AgCl-doped fly ash cenospheres (denoted Ag@AgCl/FAC). SEM micrographs showed that Ag@AgCl was well deposited on the surface of the fly ash cenospheres. Photocatalytic experiment results showed that the degradation ratio increased with increasing dosage of Ag@AgCl/fly ash cenospheres; proper concentration of pollutant was important for the photocatalytic reaction for given amount of catalyst. Moreover, improved degradation of rhodamine B was observed at acidic conditions under visible-light irradiation. This excellent catalytic ability is mainly attributed to the formation of Ag nanoparticles on the surface of the fly ash cenospheres and the high separation efficiency of photoelectron–hole pairs.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jul 20, 2016

References

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