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Vol. 26 No. 24 (2014)

Copyright (c) 2014 E.S. Baeissa

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Improvement Photocatalytic Activity of Ag2S Nanoparticles by Gold Doping

https://doi.org/10.14233/ajchem.2014.17647
E.S. Baeissa
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203 Jeddah 21589, Saudi Arabia Corresponding author: Fax: +96 62 6952292; Tel: +96 62 6400000; E-mail: elhambaeissa@gmail.com

Corresponding Author(s) : E.S. Baeissa

Asian Journal of Chemistry, Vol. 26 No. 24 (2014)

Abstract

Hydrothermal method was used to prepare Ag2S nanoparticles, photoassisted deposition method was used to doped gold into Ag2S nanoparticles. The obtained nanoparticles are characterized by X-ray photoelectron spectroscopy, photoluminescence emission spectra, ultraviolet and visible spectroscopy, surface area measurement, X-ray diffraction and transmission electron microscopy. The photocatalytic removal of cyanide under visible light was used to measure photocatalytic performance of Ag2S and Au/ Ag2S nanoparticles. The results reveal that doping of gold into Ag2S cause shift absorption of Ag2S to high wavelength as shown in UV-visible spectra. XPS results confirm the presence of gold metal above surface of Ag2S nanoparticles. 0.6 wt % Au/Ag2S nanoparticle has highest photocatalytic activity and is stable after reuse for five times.

Keywords

Au loading Ag2S Visible photocatalyst Oxidation of cyanide.
Baeissa, E. (2014). Improvement Photocatalytic Activity of Ag2S Nanoparticles by Gold Doping. Asian Journal of Chemistry, 26(24), 8397–8401. https://doi.org/10.14233/ajchem.2014.17647
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