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Vol. 27 No. 11 (2015): Vol 27 Issue 11

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Environmental Remediation of Pb(II) Solutions by Photocatalytic Reduction Using S-CeO2 Nanocomposite

https://doi.org/10.14233/ajchem.2015.19090
E.S. Baeissa
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia

Corresponding Author(s) : E.S. Baeissa

elhambaeissa@yahoo.com

Asian Journal of Chemistry, Vol. 27 No. 11 (2015): Vol 27 Issue 11

Abstract

A sol-gel method was used to prepare CeO2 and S-CeO2 nanocomposite. CeO2 and S-CeO2 nanocomposites were characterized by BET, XRD, XPS, photoluminescence, UV-visible and TEM measurements. The photocatalytic performance of CeO2 and S-CeO2 nanocomposites with respect to the photocatalytic reduction of lead under visible light irradiation was determined. The results reveal that the sulfur was well dispersed onto the surface of the ceria nanoparticles. Additionally, the surface area of the S-CeO2 nanocomposites was observed to be smaller than that of the CeO2 nanoparticles due to the blocking of some pores of the CeO2 nanoparticles by the doping of sulfur. The S-CeO2 nanocomposite (1.5 wt % as sulfur) exhibits the lowest band gap and highest photocatalytic activity for reduction of lead. The photocatalytic performance of the 1.5 wt % S-CeO2 nanocomposites was stable after the reuse of the nanoparticles for reduction of lead after five uses.

Keywords

CeO2 S doping Photocatalyst Lead reduction
Baeissa, E. (2015). Environmental Remediation of Pb(II) Solutions by Photocatalytic Reduction Using S-CeO2 Nanocomposite. Asian Journal of Chemistry, 27(11), 4071–4075. https://doi.org/10.14233/ajchem.2015.19090
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