Publication: Estimation of the Integral Toxicity of Photocatalysts Based on Graphitic Carbon Nitride in a Luminescent Test
Дата
2022
Авторы
Chubenko, E. B.
Baglov, A. V.
Dudchik, N. V.
Drozdova, E. V.
Borisenko, V. E.
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© 2022, Pleiades Publishing, Ltd.Abstract: A ternary heterosystem consisting of crystalline graphitic carbon nitride, zinc oxide, and zinc sulfide (g-C3N4/ZnO/ZnS) was obtained by the one-stage decomposition of a mixture of thiourea and zinc acetate. The integral toxicity index of the resulting material was estimated in a luminescent test with a genetically modified Escherichia coli strain as a test object. The effect of quenching the luminescence of E. coli was noted both under exposure to UV radiation due to photocatalytic reactions on the surface of g-C3N4/ZnO/ZnS leading to the formation of highly oxidative radical ions interacting with cell membranes and without irradiation due to mechanical interactions with bacterial cells. At a 0.3 g/L concentration of g-C3N4/ZnO/ZnS in aqueous solution, the toxicity index T reached 75.6% under UV irradiation. In this case, an increase in the toxicity index T of the ternary heterosystem in a test concentration range from 0.1 to 0.3 g/L was 6 or 10–11% under UV radiation or without illumination, respectively, as compared with that of the pure graphite-like carbon nitride obtained under identical conditions.
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Estimation of the Integral Toxicity of Photocatalysts Based on Graphitic Carbon Nitride in a Luminescent Test / Chubenko, E.B. [et al.] // Kinetics and Catalysis. - 2022. - 63. - № 2. - P. 166-171. - 10.1134/S002315842202001X
URI
https://www.doi.org/10.1134/S002315842202001X
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https://openrepository.mephi.ru/handle/123456789/27921
https://www.scopus.com/record/display.uri?eid=2-s2.0-85130215371&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000796501300004
https://openrepository.mephi.ru/handle/123456789/27921