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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-0ba5cfbe-1645-4b37-b33d-46405345a234

Czasopismo

Materials Science Poland

Tytuł artykułu

Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings

Autorzy Wojcieszak, D.  Mazur, M.  Kaczmarek, D.  Poniedziałek, A.  Domanowski, P.  Szponar, B.  Czajkowska, A.  Gamian, A. 
Treść / Zawartość http://www.materialsscience.pwr.wroc.pl/
Warianty tytułu
Języki publikacji EN
Abstrakty
EN In this work, the effect of titanium dioxide (TiO2) thin film microstructure on photocatalytic and biological activity was described. The films were prepared by low-pressure and high-energy magnetron sputtering processes. The structural investigations performed by X-ray diffraction revealed that the films from both the processes were nanocrystalline. It was found that TiO2prepared by low-pressure process had the anatase structure with crystallites in size of 20 nm, while the film deposited in high-energy process had the rutile form with crystallites in size of 5 nm. The analysis of surface topography with the aid of optical profiler showed that all prepared films were homogenous and their roughness was lower than 1 nm. The wettability studies revealed hydrophilic nature of both films. The values of water contact angle obtained for anatase and rutile films were equal to 40° and 49°, respectively. Both types of the thin films were photocatalitycally active, but rutile exhibited higher decomposition rate as compared to anatase. During the photocatalytic reaction in the presence of TiO2-rutile film after 12 hours of UV-Vis irradiation 30 % of phenol was decomposed, whereas in case of TiO2-anatase it was only 10 %. Moreover, the influence of as-deposited coatings on the growth of selected microbes (Staphylococcus aureus, Escherichia coli, Candida albicans) was examined. It was found that the structural properties of TiO2had an effect on biological activity of these films.
Słowa kluczowe
EN TiO2   thin film   nanocrystalline structure   antibacterial properties   photocatalytic activity  
Wydawca Springer
Czasopismo Materials Science Poland
Rocznik 2016
Tom Vol. 34, No. 4
Strony 856--862
Opis fizyczny Bibliogr. 25 poz., rys., tab.
Twórcy
autor Wojcieszak, D.
  • Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland, damian.wojcieszak@pwr.edu.pl
autor Mazur, M.
  • Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland
autor Kaczmarek, D.
  • Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland
autor Poniedziałek, A.
  • Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, Poland
autor Domanowski, P.
  • Faculty of Mechanical Engineering, University of Technology and Life Sciences in Bydgoszcz, Kaliskiego 7,85-796 Bydgoszcz, Poland
autor Szponar, B.
  • Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wroclaw, Poland
autor Czajkowska, A.
  • Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wroclaw, Poland
autor Gamian, A.
  • Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wroclaw, Poland
Bibliografia
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Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-0ba5cfbe-1645-4b37-b33d-46405345a234
Identyfikatory
DOI 10.1515/msp-2016-0100