Improving the visible-light photocatalytic activity of SnOx·SiO2 glass systems by introducing SnOx nanoparticles
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Tin silicate glass without SnOx nanoparticles (SiO2·SnOx), a silica glass containing only SnOx nanoparticles (SiO2·SnOxNP) and the improved product, which combines the tin silicate glass with SnOx nanoparticles (SiO2·SnOx·SnOxNP) was prepared. For the structural analysis 119Sn Mössbauer spectroscopy and X-ray diffraction were applied. The 119Sn Mössbauer spectra showed that the SiO2·SnOx·SnOxNP sample had the largest SnII content (12.0%). It also had an outstanding methylene blue degradation with the first-order rate value with (18 ± 2) × 10−3 min−1 with visible light irradiation.
KeywordsNanostructured materials Ceramics Catalysis Sol–gel processes Mössbauer spectroscopy
The authors would like to express their gratitude for the financial supports by Grant-in-Aid for Scientific Research (KAKENHI, No. 26630321), Priority allocation of research funds at the discretion of the President of Tokyo Metropolitan University and also by the Japan-Hungary Bilateral program (TÉT 12 JP-1-2014-0025).
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