Abstract
Zinc oxide films with three types of topographies: needle-like and hexagonal rods and flakes, were prepared by hydrothermal synthesis on stainless steel substrates to investigate their photocatalytic and antibacterial properties. The photocatalytic activity was measured with a methylene blue (MB) discoloration test, whereas a method using bioluminescent whole cell bacterial biosensors enabling the constant monitoring of the amount of living cells on the surfaces was used here to study the antibacterial properties. The results showed that photocatalytic activity was clearly influenced by the surface area, which is in turn dependent on the topography. Moreover, it was found that all the examined films decreased notably the amount of Staphylococcus aureus and Escherichia coli on the surfaces. Despite significant differences in the surface areas of the studied samples that led to different zinc dissolution rate in aqueous environment, no notable differences in antibacterial activity between the films with different morphologies could be detected. These results are presented and discussed in this paper.
| Original language | English |
|---|---|
| Pages (from-to) | 842-849 |
| Number of pages | 8 |
| Journal | Thin Solid Films |
| Volume | 616 |
| DOIs | |
| Publication status | Published - 1 Oct 2016 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Antibacterial
- Biosensor cell
- Hydrothermal synthesis
- Photocatalytic activity
- Zinc oxide
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Photocatalytic and antibacterial properties of ZnO films with different surface topographies on stainless steel substrate. / Heinonen, Saara; Kannisto, Matti; Nikkanen, Juha Pekka; Huttunen-Saarivirta, Elina; Karp, Matti; Levänen, Erkki.
In: Thin Solid Films, Vol. 616, 01.10.2016, p. 842-849.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Photocatalytic and antibacterial properties of ZnO films with different surface topographies on stainless steel substrate
AU - Heinonen, Saara
AU - Kannisto, Matti
AU - Nikkanen, Juha Pekka
AU - Huttunen-Saarivirta, Elina
AU - Karp, Matti
AU - Levänen, Erkki
PY - 2016/10/1
Y1 - 2016/10/1
N2 - Zinc oxide films with three types of topographies: needle-like and hexagonal rods and flakes, were prepared by hydrothermal synthesis on stainless steel substrates to investigate their photocatalytic and antibacterial properties. The photocatalytic activity was measured with a methylene blue (MB) discoloration test, whereas a method using bioluminescent whole cell bacterial biosensors enabling the constant monitoring of the amount of living cells on the surfaces was used here to study the antibacterial properties. The results showed that photocatalytic activity was clearly influenced by the surface area, which is in turn dependent on the topography. Moreover, it was found that all the examined films decreased notably the amount of Staphylococcus aureus and Escherichia coli on the surfaces. Despite significant differences in the surface areas of the studied samples that led to different zinc dissolution rate in aqueous environment, no notable differences in antibacterial activity between the films with different morphologies could be detected. These results are presented and discussed in this paper.
AB - Zinc oxide films with three types of topographies: needle-like and hexagonal rods and flakes, were prepared by hydrothermal synthesis on stainless steel substrates to investigate their photocatalytic and antibacterial properties. The photocatalytic activity was measured with a methylene blue (MB) discoloration test, whereas a method using bioluminescent whole cell bacterial biosensors enabling the constant monitoring of the amount of living cells on the surfaces was used here to study the antibacterial properties. The results showed that photocatalytic activity was clearly influenced by the surface area, which is in turn dependent on the topography. Moreover, it was found that all the examined films decreased notably the amount of Staphylococcus aureus and Escherichia coli on the surfaces. Despite significant differences in the surface areas of the studied samples that led to different zinc dissolution rate in aqueous environment, no notable differences in antibacterial activity between the films with different morphologies could be detected. These results are presented and discussed in this paper.
KW - Antibacterial
KW - Biosensor cell
KW - Hydrothermal synthesis
KW - Photocatalytic activity
KW - Zinc oxide
UR - http://www.scopus.com/inward/record.url?scp=84991648557&partnerID=8YFLogxK
U2 - 10.1016/j.tsf.2016.10.002
DO - 10.1016/j.tsf.2016.10.002
M3 - Article
AN - SCOPUS:84991648557
VL - 616
SP - 842
EP - 849
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
ER -