Creation and research of new bioindifferent photocatalysts that use the energy of solar radiation to purify wastewater from pollutants

This work is devoted to the study of new bioindifferent photocatalysts that use the energy of solar radiation to purify water from organic pollutants. Photocatalytic materials were obtained by a previously developed low-temperature pyrolytic synthesis. Varying the bismuth content in the percursor mi...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2021-11, Vol.895 (1), p.12024
Main Authors: Makarevich, K S, Kaminsky, O I, Zaitsev, A V, Kirichenko, E A, Krutikova, V O
Format: Article
Language:English
Subjects:
Bismuth
Bismuth oxides
Bismuth silicate
Bismuth silicon oxide
Bismuth trioxide
Catalysts
Catalytic activity
Coatings
Low temperature
Photocatalysis
Photocatalysts
Pollutants
Radiation
Silicates
Solar energy
Solar radiation
Strontium
Wastewater
Wastewater pollution
Wastewater purification
Water pollution
Water purification
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Summary:This work is devoted to the study of new bioindifferent photocatalysts that use the energy of solar radiation to purify water from organic pollutants. Photocatalytic materials were obtained by a previously developed low-temperature pyrolytic synthesis. Varying the bismuth content in the percursor mixture within 15-30 %, allows controlling the phase formation of the bismuth and strontium silicate phases. The samples obtained at 25 % bismuth in the precursor mixture (in terms of Bi 2 O 3 %, wt.) show the highest photocatalytic activity with Bi 12 SiO 2 , Bi4Si3O12 formed in the catalyst composition. Photocatalytic activity of coatings with the predominance of bismuth silicates is inferior to coatings with the predominance of strontium bismuthates, but their greater hydrolytic stability is observed.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/895/1/012024