Photocatalytic degradation of methyl red dye

Faculty Science Year: 2009
Type of Publication: Article Pages: 299-303
Authors:
Mahmoud, M. A, Poncheri, A, Badr, Y, El Wahed, M. G. Abd
Journal: SOUTH AFRICAN JOURNAL OF SCIENCE ACAD SCIENCE SOUTH AFRICA A S S AF Volume: 105
Research Area: Science \& Technology - Other Topics ISSN ISI:000270376500017
Keywords : silica nanoparticles, photocatalysis, photo-degradation, gold, silver    
Abstract:
Silica nanoparticles (SiO(2) NPs) are active in the photocatalytic degradation of methyl red dye (MR). SiO(2) NPs and SiO(2) NPs that have been doped with either silver (Ag NPs) and/or gold nanoparticles (Au NPs) were prepared. The particle size and morphology of the catalysts were assessed by transmission electron microscopy (TEM) imaging. The rate of photocatalytic degradation of MR was found to increase from SiO(2), NPs, SiO(2) NPs coated with both Au NPs and Ag NPs, SiO(2) NPs coated with Ag NPs, SiO(2) NPs coated with Au NPs, Ag(+)-doped SiO(2) NPs to Au(3+)-doped SiO(2) NPs.
    
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