Two-functional direct current sputtered silver-containing titanium dioxide thin films

J. Musil, M. Louda, R. Cerstvy, P. Baroch, I. B. Ditta, A. Steele, H. A. Foster

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The article reports on structure, mechanical, optical, photocatalytic and biocidal properties of Ti-Ag-O films. The Ti-Ag-O films were reactively sputter-deposited from a composed Ti/Ag target at different partial pressures of oxygen $$ pO 2 on unheated glass substrate held on floating potential U fl. It was found that addition of ∼2 at.% of Ag into TiO 2 film has no negative influence on UV-induced hydrophilicity of TiO 2 film. Thick (∼1,500 nm) TiO 2/Ag films containing (200) anatase phase exhibit the best hydrophilicity with water droplet contact angle (WDCA) lower than 10° after UV irradiation for 20 min. Thick (∼1,500 nm) TiO 2/Ag films exhibited a better UV-induced hydrophilicity compared to that of thinner (∼700 nm) TiO2/Ag films. Further it was found that hydrophilic TiO 2/Ag films exhibit a strong biocidal effect under both the visible light and the UV irradiation with 100% killing efficiency of Escherichia coli ATCC 10536 after UV irradiation for 20 min. Reported results show that single layer of TiO 2 with Ag distributed in its whole volume exhibits, after UV irradiation, simultaneously two functions: (1) excellent hydrophilicity with WDCA < 10° and (2) strong power to kill E. coli even under visible light due to direct toxicity of Ag.

Original languageEnglish
Pages (from-to)313-320
Number of pages8
JournalNanoscale Research Letters
Volume4
Issue number4
DOIs
Publication statusPublished - 1 Apr 2009

Fingerprint

Silver
titanium oxides
Titanium dioxide
direct current
silver
Thin films
Hydrophilicity
thin films
Irradiation
irradiation
Escherichia coli
Contact angle
titanium dioxide
Water
Escherichia
toxicity
anatase
Partial pressure
floating
water

Keywords

  • Ag addition
  • Biocidal activity
  • Hydrophilicity
  • Mechanical properties
  • Sputtering
  • TiO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Two-functional direct current sputtered silver-containing titanium dioxide thin films. / Musil, J.; Louda, M.; Cerstvy, R.; Baroch, P.; Ditta, I. B.; Steele, A.; Foster, H. A.

In: Nanoscale Research Letters, Vol. 4, No. 4, 01.04.2009, p. 313-320.

Research output: Contribution to journalArticle

Musil, J, Louda, M, Cerstvy, R, Baroch, P, Ditta, IB, Steele, A & Foster, HA 2009, 'Two-functional direct current sputtered silver-containing titanium dioxide thin films', Nanoscale Research Letters, vol. 4, no. 4, pp. 313-320. https://doi.org/10.1007/s11671-008-9244-z
Musil, J. ; Louda, M. ; Cerstvy, R. ; Baroch, P. ; Ditta, I. B. ; Steele, A. ; Foster, H. A. / Two-functional direct current sputtered silver-containing titanium dioxide thin films. In: Nanoscale Research Letters. 2009 ; Vol. 4, No. 4. pp. 313-320.
@article{7fdf459dd71c46a0b7841310213b33aa,
title = "Two-functional direct current sputtered silver-containing titanium dioxide thin films",
abstract = "The article reports on structure, mechanical, optical, photocatalytic and biocidal properties of Ti-Ag-O films. The Ti-Ag-O films were reactively sputter-deposited from a composed Ti/Ag target at different partial pressures of oxygen $$ pO 2 on unheated glass substrate held on floating potential U fl. It was found that addition of ∼2 at.{\%} of Ag into TiO 2 film has no negative influence on UV-induced hydrophilicity of TiO 2 film. Thick (∼1,500 nm) TiO 2/Ag films containing (200) anatase phase exhibit the best hydrophilicity with water droplet contact angle (WDCA) lower than 10° after UV irradiation for 20 min. Thick (∼1,500 nm) TiO 2/Ag films exhibited a better UV-induced hydrophilicity compared to that of thinner (∼700 nm) TiO2/Ag films. Further it was found that hydrophilic TiO 2/Ag films exhibit a strong biocidal effect under both the visible light and the UV irradiation with 100{\%} killing efficiency of Escherichia coli ATCC 10536 after UV irradiation for 20 min. Reported results show that single layer of TiO 2 with Ag distributed in its whole volume exhibits, after UV irradiation, simultaneously two functions: (1) excellent hydrophilicity with WDCA < 10° and (2) strong power to kill E. coli even under visible light due to direct toxicity of Ag.",
keywords = "Ag addition, Biocidal activity, Hydrophilicity, Mechanical properties, Sputtering, TiO",
author = "J. Musil and M. Louda and R. Cerstvy and P. Baroch and Ditta, {I. B.} and A. Steele and Foster, {H. A.}",
year = "2009",
month = "4",
day = "1",
doi = "10.1007/s11671-008-9244-z",
language = "English",
volume = "4",
pages = "313--320",
journal = "Nanoscale Research Letters",
issn = "1931-7573",
publisher = "Springer New York",
number = "4",

}

TY - JOUR

T1 - Two-functional direct current sputtered silver-containing titanium dioxide thin films

AU - Musil, J.

AU - Louda, M.

AU - Cerstvy, R.

AU - Baroch, P.

AU - Ditta, I. B.

AU - Steele, A.

AU - Foster, H. A.

PY - 2009/4/1

Y1 - 2009/4/1

N2 - The article reports on structure, mechanical, optical, photocatalytic and biocidal properties of Ti-Ag-O films. The Ti-Ag-O films were reactively sputter-deposited from a composed Ti/Ag target at different partial pressures of oxygen $$ pO 2 on unheated glass substrate held on floating potential U fl. It was found that addition of ∼2 at.% of Ag into TiO 2 film has no negative influence on UV-induced hydrophilicity of TiO 2 film. Thick (∼1,500 nm) TiO 2/Ag films containing (200) anatase phase exhibit the best hydrophilicity with water droplet contact angle (WDCA) lower than 10° after UV irradiation for 20 min. Thick (∼1,500 nm) TiO 2/Ag films exhibited a better UV-induced hydrophilicity compared to that of thinner (∼700 nm) TiO2/Ag films. Further it was found that hydrophilic TiO 2/Ag films exhibit a strong biocidal effect under both the visible light and the UV irradiation with 100% killing efficiency of Escherichia coli ATCC 10536 after UV irradiation for 20 min. Reported results show that single layer of TiO 2 with Ag distributed in its whole volume exhibits, after UV irradiation, simultaneously two functions: (1) excellent hydrophilicity with WDCA < 10° and (2) strong power to kill E. coli even under visible light due to direct toxicity of Ag.

AB - The article reports on structure, mechanical, optical, photocatalytic and biocidal properties of Ti-Ag-O films. The Ti-Ag-O films were reactively sputter-deposited from a composed Ti/Ag target at different partial pressures of oxygen $$ pO 2 on unheated glass substrate held on floating potential U fl. It was found that addition of ∼2 at.% of Ag into TiO 2 film has no negative influence on UV-induced hydrophilicity of TiO 2 film. Thick (∼1,500 nm) TiO 2/Ag films containing (200) anatase phase exhibit the best hydrophilicity with water droplet contact angle (WDCA) lower than 10° after UV irradiation for 20 min. Thick (∼1,500 nm) TiO 2/Ag films exhibited a better UV-induced hydrophilicity compared to that of thinner (∼700 nm) TiO2/Ag films. Further it was found that hydrophilic TiO 2/Ag films exhibit a strong biocidal effect under both the visible light and the UV irradiation with 100% killing efficiency of Escherichia coli ATCC 10536 after UV irradiation for 20 min. Reported results show that single layer of TiO 2 with Ag distributed in its whole volume exhibits, after UV irradiation, simultaneously two functions: (1) excellent hydrophilicity with WDCA < 10° and (2) strong power to kill E. coli even under visible light due to direct toxicity of Ag.

KW - Ag addition

KW - Biocidal activity

KW - Hydrophilicity

KW - Mechanical properties

KW - Sputtering

KW - TiO

UR - http://www.scopus.com/inward/record.url?scp=59849085304&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=59849085304&partnerID=8YFLogxK

U2 - 10.1007/s11671-008-9244-z

DO - 10.1007/s11671-008-9244-z

M3 - Article

AN - SCOPUS:59849085304

VL - 4

SP - 313

EP - 320

JO - Nanoscale Research Letters

JF - Nanoscale Research Letters

SN - 1931-7573

IS - 4

ER -