Antimicrobial properties of pristine and Pt-modified titania P25 in rotating magnetic field conditions

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dc.contributor.authorPaszkiewicz, Oliwia
dc.contributor.authorWang, Kunlei
dc.contributor.authorRakoczy, Rafał
dc.contributor.authorKordas, Marian
dc.contributor.authorLeniec, Grzegorz
dc.contributor.authorKowalska, Ewa
dc.contributor.authorMarkowska-Szczupak, Agata
dc.contributor.organizationDepartment of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Piastow 42, Szczecin 71-065, Polandpl_PL
dc.contributor.organizationInstitute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japanpl_PL
dc.contributor.organizationInstitute of Physics, Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, al. Piastow 48, Szczecin 70-311, Polandpl_PL
dc.contributor.organizationDepartment of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Piastow 42, Szczecin 71-065, Poland
dc.contributor.organizationInstitute of Physics, Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, al. Piastow 48, Szczecin 70-311, Poland
dc.contributor.organizationInstitute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
dc.contributor.organizationDepartment of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Piastow 42, Szczecin 71-065, Poland
dc.date.accessioned2023-03-13T11:38:38Z
dc.date.available2023-03-13T11:38:38Z
dc.date.issued2022-08-01
dc.description.abstractEffective and cheap water purification is one of the most important tasks facing humanity. Among various methods of water treatment, heterogeneous photocatalysis is probably most recommended. However, the application of artificial sources of irradiation results in high investment and operating costs. Accordingly, either vis-responsive photocatalysts or different ways of photocatalyst activation should be developed. In the present study, rotating magnetic field (RMF) has been tested to inactivate gram-positive (Staphylococcus epidermidis) and gram-negative (Escherichia coli) bacteria in the presence of pristine and Pt-modified titania P25 photocatalyst. Liquid cultures of the bacteria have been exposed to the titania and RMF (RMF frequency of 1–50 Hz, RMF magnetic induction of ca. 19.92 mT, 180 min exposure time, temperature of incubation at 37 °C). It has been found that highly active titania photocatalyst might also work in the absence of photoirradiation but under RMF. Moreover, its modification with platinum besides highly improved photocatalytic activity (tested for two model reactions of oxidative decomposition of acetic acid and anaerobic dehydrogenation of methanol under UV/vis irradiation) results in significant enhancement of antimicrobial effect under RMF. Additionally, photocatalysts with larger content of oxidized forms of platinum show higher antimicrobial activity, and thus it is proposed that platinum oxides are more active than zero-valent platinum under RMF. This study provides evidence of antimicrobial effect of titania without photoirradiation, indicating that RMF might efficiently activate photocatalyst.pl_PL
dc.description.sponsorshipNarodowe Centrum Nauki, Konkurs Preludiumpl_PL
dc.identifier.citationPaszkiewicz O., Wang K., Rakoczy R., Kordas M., Leniec G., Kowalska E., Markowska-Szczupak A. (2022). Antimicrobial properties of pristine and Pt-modified titania P25 in rotating magnetic field conditions. Chemical Engineering and Processing - Process Intensification, Vol. 178, s. 1-10, [nr art.] 109010. 10.1016/j.cep.2022.109010pl_PL
dc.identifier.doi10.1016/j.cep.2022.109010
dc.identifier.issn0255-2701
dc.identifier.project2021/41/N/ST8/00482pl_PL
dc.identifier.urihttps://hdl.handle.net/20.500.12539/1688
dc.language.isoenpl_PL
dc.page.number1-10, [nr art.] 109010
dc.publisherElsevier B.V.pl_PL
dc.rightsUznanie autorstwa-Użycie niekomercyjne-Bez utworów zależnych 3.0 Polska*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.sourceChemical Engineering and Processing - Process Intensificationen
dc.subjectWater disinfectionpl_PL
dc.subjectRotating magnetic fieldpl_PL
dc.subjectHeterogeneous photocatalysispl_PL
dc.subjectTitanium dioxidepl_PL
dc.subjectAntimicrobial propertiespl_PL
dc.subject.otherInżynieria chemicznapl_PL
dc.titleAntimicrobial properties of pristine and Pt-modified titania P25 in rotating magnetic field conditionspl_PL
dc.typeArticlepl_PL

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