Visible light photocatalytic reduction of Cr(VI) on Ag3PO4 nanoparticles

Ag3PO4 nanoparticles of ∼300 nm were synthesized by an ion-exchange reaction between AgNO3 and (NH4)2HPO4 at ambient condition. X-ray powder diffraction, scanning electron microscopy, UV−Vis diffuse reflectance spectroscopy were employed to investigate the phase structure, morphology, and optical pr...

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Bibliographic Details
Published in:Desalination and water treatment 2013-11, Vol.51 (37-39), p.7236-7240
Main Authors: Huang, Heyong, Feng, Yuying, Zhou, Jiahong, Li, Gang, Dai, Kewei
Format: Article
Language:English
Subjects:
Ag3PO4 nanoparticles
Applied sciences
Cr(VI)
Exact sciences and technology
Industrial wastewaters
Photocatalytic reduction
Pollution
Wastewaters
Water treatment and pollution
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Summary:Ag3PO4 nanoparticles of ∼300 nm were synthesized by an ion-exchange reaction between AgNO3 and (NH4)2HPO4 at ambient condition. X-ray powder diffraction, scanning electron microscopy, UV−Vis diffuse reflectance spectroscopy were employed to investigate the phase structure, morphology, and optical property of the Ag3PO4 nanoparticles. Nearly 80% of Cr(VI) ions was removed after visible-light irradiation in Ag3PO4 suspension, the excellent photocatalytic reduction performance due to the high separation efficiency of electron and hole pairs. In addition, the possible photoreduction mechanism of Cr(VI) in Ag3PO4 suspension was discussed. The system of Ag3PO4 may provide an alternative way for the efficient removal of Cr(VI) under visible-light irradiation.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2013.779598