Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings
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...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Sciendo
2016-12-01
|
Series: | Materials Science-Poland |
Subjects: | |
Online Access: | https://doi.org/10.1515/msp-2016-0100 |
id |
doaj-b95a8a32b03a48fa88a7c6ebcbfe0392 |
---|---|
record_format |
Article |
spelling |
doaj-b95a8a32b03a48fa88a7c6ebcbfe03922021-09-06T19:20:26ZengSciendoMaterials Science-Poland2083-134X2016-12-0134485686210.1515/msp-2016-0100Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatingsWojcieszak Damian0Mazur Michał1Kaczmarek Danuta2Poniedziałek Agata3Domanowski Piotr4Szponar Bogumiła5Czajkowska Aleksandra6Gamian Andrzej7Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, PolandFaculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, PolandFaculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, PolandFaculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Janiszewskiego 11/17, 50-372 Wroclaw, PolandFaculty of Mechanical Engineering, University of Technology and Life Sciences in Bydgoszcz, Kaliskiego 7, 85-796 Bydgoszcz, PolandInstitute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wroclaw, PolandInstitute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wroclaw, PolandInstitute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114 Wroclaw, PolandIn 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 TiO2 prepared 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 TiO2 had an effect on biological activity of these films.https://doi.org/10.1515/msp-2016-0100tio2thin filmnanocrystalline structureantibacterial propertiesphotocatalytic activity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wojcieszak Damian Mazur Michał Kaczmarek Danuta Poniedziałek Agata Domanowski Piotr Szponar Bogumiła Czajkowska Aleksandra Gamian Andrzej |
spellingShingle |
Wojcieszak Damian Mazur Michał Kaczmarek Danuta Poniedziałek Agata Domanowski Piotr Szponar Bogumiła Czajkowska Aleksandra Gamian Andrzej Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings Materials Science-Poland tio2 thin film nanocrystalline structure antibacterial properties photocatalytic activity |
author_facet |
Wojcieszak Damian Mazur Michał Kaczmarek Danuta Poniedziałek Agata Domanowski Piotr Szponar Bogumiła Czajkowska Aleksandra Gamian Andrzej |
author_sort |
Wojcieszak Damian |
title |
Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings |
title_short |
Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings |
title_full |
Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings |
title_fullStr |
Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings |
title_full_unstemmed |
Effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings |
title_sort |
effect of the structure on biological and photocatalytic activity of transparent titania thin-film coatings |
publisher |
Sciendo |
series |
Materials Science-Poland |
issn |
2083-134X |
publishDate |
2016-12-01 |
description |
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 TiO2 prepared 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 TiO2 had an effect on biological activity of these films. |
topic |
tio2 thin film nanocrystalline structure antibacterial properties photocatalytic activity |
url |
https://doi.org/10.1515/msp-2016-0100 |
work_keys_str_mv |
AT wojcieszakdamian effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT mazurmichał effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT kaczmarekdanuta effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT poniedziałekagata effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT domanowskipiotr effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT szponarbogumiła effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT czajkowskaaleksandra effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings AT gamianandrzej effectofthestructureonbiologicalandphotocatalyticactivityoftransparenttitaniathinfilmcoatings |
_version_ |
1717776851479298048 |