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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 335-336Photocatalytic Degradation of Methylene Blue over...

Photocatalytic Degradation of Methylene Blue over Co-Ag₃VO₄ under Visible Light Irradiation

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Abstract:

In order to improve the photocatalytic activity, Co was successfully loaded into Ag₃VO₄ by using impregnation process. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS) and diffuse reflectance spectroscopy (DRS). The XRD and SEM–EDS analyses revealed that Co ion was dispersed on Ag₃VO₄. The DRS results indicated that the absorption edge of the Co–Ag₃VO₄ catalyst shifted to longer wavelength. The enhanced photocatalytic activity of Co–Ag₃VO₄ for Methylene Blue(MB) dye degradation under visible light irradiation was due to its wider absorption edge and higher separation rate of photo-generated electron and holes. In the experimental conditions, it is demonstrated that the MB was effectively degraded by more than 95% within 40 min when the Co–Ag₃VO₄ catalyst was calcined at 300°C with 1 wt.% Co content.

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Advanced Materials and Structures

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Periodical:

Advanced Materials Research (Volumes 335-336)

Pages:

1385-1390

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.335-336.1385

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Online since:

September 2011

Authors:

Shuo Wiei Zhao, Hui Xu, Hua Ming Li, Yuan Guo Xu

Keywords:

Co-Ag₃VO₄, Methylene Blue (MB), Photocatalytic, Visible Light

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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