Synthesis and Photocatalytic Sterilization Performance of SA/TiO2
The photocatalyst sorbic acid (SA)/titanium dioxide (TiO 2 ) was successfully synthesized by sol–gel method and characterized. The composite exhibited regularly spherical particles with the size of 50 nm and the specific surface area of 90.3 m 2 g −1 , furthermore, it showed mesoporous structure an...
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Published in | Journal of inorganic and organometallic polymers and materials Vol. 30; no. 9; pp. 3378 - 3387 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | The photocatalyst sorbic acid (SA)/titanium dioxide (TiO
2
) was successfully synthesized by sol–gel method and characterized. The composite exhibited regularly spherical particles with the size of 50 nm and the specific surface area of 90.3 m
2
g
−1
, furthermore, it showed mesoporous structure and significantly improved dispersion. SA was grafted on TiO
2
surface by –COOTi and TiO
2
existed as pure anatase phase in the composite. The addition of SA made the band gap of TiO
2
increased from 3.03 to 3.35 eV, which indicting that the composite exhibited a strong response to the ultraviolet light. The optimum preparation parameters of the catalyst were as follows: n(Ti):n(SA) = 1:0.05, ethanol 60 mL, glacial acetic acid 40 mL, hydrothermal temperature 180 °C, hydrothermal time 12 h. The composite could reach the 4.31 log reduction of
E. coli
, with the optimum catalyst dosage of 0.7 g L
−1
, irradiated by UV light for 60 min. SA/TiO
2
was an environmentally friendly, non-toxic and safe sterilized nanocomposite material appropriate for future bactericidal applications, providing a new way to effectively increase the dispersion of TiO
2
particles to achieve superior photocatalytic sterilization efficiency. |
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ISSN: | 1574-1443 1574-1451 |
DOI: | 10.1007/s10904-020-01491-z |