Photoaccumulating TiO.sub.2-MoO.sub.3, TiO.sub.2-V.sub.2O.sub.5, and TiO.sub.2-WO.sub.3 Heterostructures for Self-Sterilizing Systems with the Prolonged Bactericidal Activity

The photocatalytic coatings based on the solvothermally-derived submicron particles of layered MoO.sub.3, V.sub.2O.sub.5, and WO.sub.3 with the islet TiO.sub.2 shell demonstrate excellent photoenergy storage ability accumulating the photoproduced charge, as evidenced by EPR measurements, via generat...

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Bibliographic Details
Published in:Catalysis letters 2019-05, Vol.149 (5), p.1147
Main Authors: Sviridova, T. V, SadovskaÑa, L. Yu, Konstantinova, E. A, Belyasova, N. A, Kokorin, A. I, Sviridov, D. V
Format: Article
Language:English
Subjects:
Bacteria
Escherichia coli
Hydrogen
Oxidation-reduction reactions
Technical institutes
Technology
Online Access:Get full text
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Summary:The photocatalytic coatings based on the solvothermally-derived submicron particles of layered MoO.sub.3, V.sub.2O.sub.5, and WO.sub.3 with the islet TiO.sub.2 shell demonstrate excellent photoenergy storage ability accumulating the photoproduced charge, as evidenced by EPR measurements, via generation of hydrogen bronzes and Ti.sup.3+ states, which exhibit gradual oxidation in air conditions yielding peroxide. This continuous production of long-lived oxidation agent imparts bactericidal activity to the pre-exposed photocatalysts which retains for unprecedentedly long time (depending on the photocatalyst, the survival ratio below 0.5 is observed for E. coli bacteria for 10-12 h after exposure).
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-019-02706-w