Abstract
The effect of 0.1-1 mol%Ag doping on crystallite size, morphology, photocatalytic and fungal growth suppression activities of TiO2/SnO2/SiO2 nano-composite powders were investigated. The powder was synthesized by sol-gel method and studied for physicochemical properties by XRD, spectrometric techniques, FTIR, SEM, EDX and BET. The anatase structure was formed after calcination at 500oC. Photocatalytic activities towards Penicillium expansum growth suppression correlated to the amount of sliver doped in TiO2/SnO2/SiO2 nano-composite powder under ultraviolet radiation. Ag 1.0mol% doped in TiO2/SiO2/SnO2 composite has a significant effect on antifungal behaviour. It could completely kill Penicillium expansum within one day of photacatalytic treatment under UV irradiation.
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