Photocatalytic degradation of methyl red dye
Silica nanoparticles (SiO2 NPs) are active in the photocatalytic degradation of methyl red dye (MR). SiO2 NPs and SiO2 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 SiO2 NPs, SiO2 NPs coated with both Au NPs and Ag NPs, SiO2 NPs coated with Ag NPs, SiO2 NPs coated with Au NPs, Ag+-doped SiO2 N Ps to Au3+-doped SiO2 NPs.
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| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Academy of Science of South Africa
2009
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| Online Access: | http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0038-23532009000400019 |
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