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Citation: HUANG Hui-Li, HUANG Miao-Liang, CAI A-Na, LIN Yu, LIN Wen-Luan. Photocatalytic Antibacterial Effect to TiO₂ Thin Film on Ceramic Plate[J]. Chinese Journal of Applied Chemistry, ;2002, 19(1): 48-52. shu

Photocatalytic Antibacterial Effect to TiO₂ Thin Film on Ceramic Plate

1.
College of Material Science and Engineering, Huaqiao University, Quanzhou 362011

Corresponding author: HUANG Hui-Li,
Received Date: 7 June 2001
Available Online: 16 October 2001
Fund Project: 福建省自然科学基金(D0010011) (D0010011)华侨大学科研基金(H9915)资助项目 (H9915)

TiO₂ and Pt/TiO₂ antibacterial thin films were prepared by sol-gel process and dip-coating method on the substrate of ordinary glazed ceramic plate. The relationship between film thickness, exposure time and antibacterial effect of the thin films on Colibacillus and Staphylococcus aureus under the irradiation of ultraviolet and sunlight was studied. TiO₂ films of about 80 nm and 55 nm thicknesses and Pt/TiO₂ films of about 50 nm thicknesses showed antibacterial efficiencies of 90% or more on Colibacillus after 30 min ultraviolet irradiation. The experimental results has also shown that the ultraviolet irradiation effect is better than Sun does in the same concentration of the film. TiO₂ film of about 55 nm thicknesses presented the best efficiency on the Staphylococcus aureus.
- titanium oxide,
- photocatalyst,
- antibacterial thin film
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Photocatalytic Antibacterial Effect to TiO2 Thin Film on Ceramic Plate

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Photocatalytic Antibacterial Effect to TiO₂ Thin Film on Ceramic Plate