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PLANAR PHOTOCATALYSTS WITH THE FUNCTION OF PHOTO-PRODUCED CHARGE ACCUMULATION

Abstract

It is shown that nanostructured TiO2 : MoO3 films are capable to accumulate the charges induced under UV irradiation due to the generation of reduced forms of molybdenum oxide (hydrogen bronzes). Oxidation of these reduced forms in the air condition is accompanied by the generation of reactive oxygen species, due to which TiO2 : MoO3 films retain the oxidation ability and the pathophysiological activity for a long time after irradiation completion.

About the Authors

L. Yu. SADOVSKAYA
Belarusian State University, Minsk
Belarus


T. V. SVIRIDOVA
Belarusian State University, Minsk
Belarus


T. M. YAKIMENKO
Belarusian State University, Minsk
Belarus


D. V. SVIRIDOV
Belarusian State University, Minsk
Belarus


References

1. Fujishima, A. Titanium dioxide photocatalysis / A. Fujishima, T. N. Rao, D. A. Truk // J. Photochem. Photobiol. C: Photochem. Rew. – 2000. – Vol. 1. – P. 1–21.

2. Bactericidal mode of titanium dioxide photocatalysis / Z. Huang [et al.] // J. Photochem. Photobiol. A: Chem. – 2000. – Vol. 130. – P. 163–170.

3. Photocatalytic activity of TiO2 : In2O3 nanocomposite films towards the degradation of arylmethane and azo dyes / E. V. Skorb [et al.] // J. Photochem. Photobiol. – 2008. – Vol. 193. – P. 97–103.

4. Antibacterial activity of thin-film photocatalysts based on metal-loaded TiO2 and TiO2 : In2O3 nanocomposite / E. V. Skorb [et al.] // Appl. Catal. Еnv. – 2008. – Vol. 53. – P. 222–226.

5. Generation and deactivation processes of superoxide formed on TiO2 film illuminated by very weak UV light in air or water / K. Ishibashi [et al.] // J. Phys. Chem. B. – 2000. – Vol. 104. – P. 4934–4938.

6. Sviridova, T. V. Nano- and microcrystals of molybdenum trioxide and metal-matrix composites on their basis / T. V. Sviridova, L. I. Stepanova, D. V. Sviridov // Molybdenum: Characteristics, Production and Applications / ed. by M. Ortiz [et al.]. – NY: Nova Sci. Publishers, 2012. – P. 147–179.

7. Tada, H. Dependence of TiO2 photocatalytic activity upon its film thickness / H. Tada, M. Tanaka // Langmuir. – 1997. – Vol. 13. – P. 360–364.

8. Wedland, W. Reflectance Spectroscopy / W. Wedland, H. Hecht. – NY: Intersci. Publ., 1966.


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ISSN 1561-8323 (Print)
ISSN 2524-2431 (Online)