Abstract: Photocatalysts are materials with high potential to solve the increasing environmental pollution problems and control viral growth. The most widely used photocatalyst, TiO2, can utilize only 4% of sunlight as UV light, which has limited the scope of photocatalytic applications. Creating a photocatalyst that can be applied in the visible range will broaden the application of the material. We attempted to improve the photocatalytic performance by forming a heterostructure based on TiO2/SiO2 particles with improved light scattering properties and attached Sn3O4. The amount of Sn3O4 can be adjusted simply by controlling the hydrothermal synthesis time. As the hydrothermal synthesis time increases, Sn3O4 forms micro flowers on the TiO2/SiO2 surface. The photocatalytic performance was validated by bactericidal evaluation. It was confirmed that the presence of a small amount of Sn3O4 provided the highest bactericidal activity under fluorescent light irradiation.

Key words: Photocatalyst, visible light, anti-bacteria, bactericidal.

Cite: Akihiro Yamazumi, Dang-Trang Nguyen, Kozo Taguchi, "Anti-bacterial Test of Sn3O4/TiO2/SiO2 Particles with Controlled Sn3O4 Deposition," International Journal of Materials Science and Engineering, Vol. 10, No. 4, pp. 80-87, November 2022. doi: 10.17706/ijmse.2022.10.4.80-87
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