Improving the visible-light photocatalytic activity of SnOx center dot SiO2 glass systems by introducing SnOx nanoparticles

摘要

Tin silicate glass without SnOx nanoparticles (SiO2 center dot SnOx), a silica glass containing only SnOx nanoparticles (SiO2 center dot SnOxNP) and the improved product, which combines the tin silicate glass with SnOx nanoparticles (SiO2 center dot SnOx center dot SnOxNP) was prepared. For the structural analysis Sn-119 Mossbauer spectroscopy and X-ray diffraction were applied. The Sn-119 Mossbauer spectra showed that the SiO2 center dot SnOx center dot SnOxNP sample had the largest Sn-II content (12.0%). It also had an outstanding methylene blue degradation with the first-order rate value with (18 +/- 2) x 10(-3) min(-1) with visible light irradiation.