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Chemiluminescent Study of the Generation Processes of Active Oxygen Species on the Surface of Accumulating Photocatalysts TiO2:MoO3
Abstract
It has been shown using the chemiluminescence technique that in the case of TiO2:MoO3 composites, contrastingly to TiO2 photocatalysts, the process of superoxide photogeneration appears to be completely suppressed, whereas the photoelectron trapping in the MoO3 phase accompanied with the production of Mo(V) reduced states facilitates long-term generation of hydrogen peroxide that plays a role of biocide agent. It has been also shown that the TiO2:MoO3 accumulating photocatalysts are fully reversible and the cycle of photocharging followed by peroxide generation can be repeated many times.
Keywords
chemiluminescence,
hydrogen peroxide,
photocatalysis,
titanium dioxide,
molybdenum trioxide,
Fenton reaction
Supporting agencies: The work was carried out within the framework of the state research program “Chemical processes, reagents and technologies, bioregulators and bioorgchemistry” (subprogram “Chemical technologies, processes and reagents”, task 2.1.06.3, state registration No. 20211572)
About the Authors
T. V. Sviridova
Belarusian State University
Belarus
Belarus
Minsk
L. Yu. Sadovskaya
Belarusian State University
Belarus
Belarus
Minsk
D. V. Sviridov
Belarusian State University
Belarus
Belarus
Minsk
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Review
For citations:
Sviridova T.V., Sadovskaya L.Yu., Sviridov D.V. Chemiluminescent Study of the Generation Processes of Active Oxygen Species on the Surface of Accumulating Photocatalysts TiO2:MoO3. Zhurnal Prikladnoii Spektroskopii. 2024;91(5):647-651. (In Russ.)
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