In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts

Katarzyna Kowal; Katarzyna Wysocka-Król; Marta Kopaczyńska; Ewa Dworniczek; Roman Franiczek; Magdalena Wawrzyńska; Melinda Vargová; Miroslav Zahoran; Erik Rakovský; Peter Kuš; Gustav Plesch; Andrej Plecenik; Fathima Laffir; Syed A.M. Tofail; Halina Podbielska

doi:10.1016/j.jcis.2011.06.035

In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts

Katarzyna Kowal, Katarzyna Wysocka-Król, Marta Kopaczyńska, Ewa Dworniczek, Roman Franiczek, Magdalena Wawrzyńska, Melinda Vargová, Miroslav Zahoran, Erik Rakovský, Peter Kuš, Gustav Plesch, Andrej Plecenik, Fathima Laffir, Syed A.M. Tofail, Halina Podbielska

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Photocatalytic and in situ microbial activity. of. the amorphous and annealed states of Ag-doped and un-doped titania were examined. Studies. on. their structure, morphology, composition, and the photo-absorption characteristics of these materials were performed. These. results. were correlated with the photocatalytic and microbial activity against methicillin resistant Staphylococcus aureus K324 (MRSA), methicillin susceptible S. aureus ATCC 25923 (MSSA), Escherichia coli PA 170, and yeasts Candida albicans ATCC 90028. The annealed powders containing anatase form of titania exhibited relatively higher photocatalytic activity,. corresponding. to activity against MRSA,. when exposed to UV-A radiation. In comparison, amorphous powders exhibited low photoactivity and showed poor antibacterial performance against MRSA under UV-A exposure. Doping of amorphous titania with Ag resulted in an anti-MRSA effect. without. exposure to UV radiation. In the Ag-doped crystalline anatase samples, the size of Ag primary nanocrystallites increased, which led to. the. decrease in the surface concentration of Ag. and. detriment. anti-MRSA activity.

Original language	English
Pages (from-to)	50-57
Number of pages	8
Journal	Journal of Colloid and Interface Science
Volume	362
Issue number	1
DOIs	https://doi.org/10.1016/j.jcis.2011.06.035
Publication status	Published - 1 Oct 2011

Keywords

Anatase
Antimicrobial activity
MRSA
Photocatalytic activity
Silver
Titania nanopowders

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jcis.2011.06.035

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Kowal, K., Wysocka-Król, K., Kopaczyńska, M., Dworniczek, E., Franiczek, R., Wawrzyńska, M., Vargová, M., Zahoran, M., Rakovský, E., Kuš, P., Plesch, G., Plecenik, A., Laffir, F., Tofail, S. A. M., & Podbielska, H. (2011). In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts. Journal of Colloid and Interface Science, 362(1), 50-57. https://doi.org/10.1016/j.jcis.2011.06.035

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title = "In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts",

abstract = "Photocatalytic and in situ microbial activity. of. the amorphous and annealed states of Ag-doped and un-doped titania were examined. Studies. on. their structure, morphology, composition, and the photo-absorption characteristics of these materials were performed. These. results. were correlated with the photocatalytic and microbial activity against methicillin resistant Staphylococcus aureus K324 (MRSA), methicillin susceptible S. aureus ATCC 25923 (MSSA), Escherichia coli PA 170, and yeasts Candida albicans ATCC 90028. The annealed powders containing anatase form of titania exhibited relatively higher photocatalytic activity,. corresponding. to activity against MRSA,. when exposed to UV-A radiation. In comparison, amorphous powders exhibited low photoactivity and showed poor antibacterial performance against MRSA under UV-A exposure. Doping of amorphous titania with Ag resulted in an anti-MRSA effect. without. exposure to UV radiation. In the Ag-doped crystalline anatase samples, the size of Ag primary nanocrystallites increased, which led to. the. decrease in the surface concentration of Ag. and. detriment. anti-MRSA activity.",

keywords = "Anatase, Antimicrobial activity, MRSA, Photocatalytic activity, Silver, Titania nanopowders",

author = "Katarzyna Kowal and Katarzyna Wysocka-Kr{\'o}l and Marta Kopaczy{\'n}ska and Ewa Dworniczek and Roman Franiczek and Magdalena Wawrzy{\'n}ska and Melinda Vargov{\'a} and Miroslav Zahoran and Erik Rakovsk{\'y} and Peter Ku{\v s} and Gustav Plesch and Andrej Plecenik and Fathima Laffir and Tofail, {Syed A.M.} and Halina Podbielska",

year = "2011",

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doi = "10.1016/j.jcis.2011.06.035",

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Kowal, K, Wysocka-Król, K, Kopaczyńska, M, Dworniczek, E, Franiczek, R, Wawrzyńska, M, Vargová, M, Zahoran, M, Rakovský, E, Kuš, P, Plesch, G, Plecenik, A, Laffir, F , Tofail, SAM & Podbielska, H 2011, 'In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts', Journal of Colloid and Interface Science, vol. 362, no. 1, pp. 50-57. https://doi.org/10.1016/j.jcis.2011.06.035

TY - JOUR

T1 - In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts

AU - Kowal, Katarzyna

AU - Wysocka-Król, Katarzyna

AU - Kopaczyńska, Marta

AU - Dworniczek, Ewa

AU - Franiczek, Roman

AU - Wawrzyńska, Magdalena

AU - Vargová, Melinda

AU - Zahoran, Miroslav

AU - Rakovský, Erik

AU - Kuš, Peter

AU - Plesch, Gustav

AU - Plecenik, Andrej

AU - Laffir, Fathima

AU - Tofail, Syed A.M.

AU - Podbielska, Halina

PY - 2011/10/1

Y1 - 2011/10/1

N2 - Photocatalytic and in situ microbial activity. of. the amorphous and annealed states of Ag-doped and un-doped titania were examined. Studies. on. their structure, morphology, composition, and the photo-absorption characteristics of these materials were performed. These. results. were correlated with the photocatalytic and microbial activity against methicillin resistant Staphylococcus aureus K324 (MRSA), methicillin susceptible S. aureus ATCC 25923 (MSSA), Escherichia coli PA 170, and yeasts Candida albicans ATCC 90028. The annealed powders containing anatase form of titania exhibited relatively higher photocatalytic activity,. corresponding. to activity against MRSA,. when exposed to UV-A radiation. In comparison, amorphous powders exhibited low photoactivity and showed poor antibacterial performance against MRSA under UV-A exposure. Doping of amorphous titania with Ag resulted in an anti-MRSA effect. without. exposure to UV radiation. In the Ag-doped crystalline anatase samples, the size of Ag primary nanocrystallites increased, which led to. the. decrease in the surface concentration of Ag. and. detriment. anti-MRSA activity.

AB - Photocatalytic and in situ microbial activity. of. the amorphous and annealed states of Ag-doped and un-doped titania were examined. Studies. on. their structure, morphology, composition, and the photo-absorption characteristics of these materials were performed. These. results. were correlated with the photocatalytic and microbial activity against methicillin resistant Staphylococcus aureus K324 (MRSA), methicillin susceptible S. aureus ATCC 25923 (MSSA), Escherichia coli PA 170, and yeasts Candida albicans ATCC 90028. The annealed powders containing anatase form of titania exhibited relatively higher photocatalytic activity,. corresponding. to activity against MRSA,. when exposed to UV-A radiation. In comparison, amorphous powders exhibited low photoactivity and showed poor antibacterial performance against MRSA under UV-A exposure. Doping of amorphous titania with Ag resulted in an anti-MRSA effect. without. exposure to UV radiation. In the Ag-doped crystalline anatase samples, the size of Ag primary nanocrystallites increased, which led to. the. decrease in the surface concentration of Ag. and. detriment. anti-MRSA activity.

KW - Anatase

KW - Antimicrobial activity

KW - MRSA

KW - Photocatalytic activity

KW - Silver

KW - Titania nanopowders

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U2 - 10.1016/j.jcis.2011.06.035

DO - 10.1016/j.jcis.2011.06.035

M3 - Article

C2 - 21741659

AN - SCOPUS:79960847841

SN - 0021-9797

VL - 362

SP - 50

EP - 57

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 1

ER -

In situ photoexcitation of silver-doped titania nanopowders for activity against bacteria and yeasts

Abstract

Keywords

UN SDGs

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