Electrodeposition for antibacterial nickel-oxide-based coatings

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

9 Scopus Citations
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Author(s)

  • Yan Yan Xi
  • Bing Qiang Huang
  • Aleksandra B. Djurišić
  • Charis M.N. Chan
  • Frederick C.C. Leung
  • Wai Kin Chan

Detail(s)

Original languageEnglish
Pages (from-to)6527-6530
Journal / PublicationThin Solid Films
Volume517
Issue number24
Publication statusPublished - 30 Oct 2009

Abstract

Nickel-oxide-based films exhibiting antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive bacteria (Bacillus atrophaeus) have been fabricated by electrodeposition from aqueous solutions. However, after annealing of the films, no antibacterial activity has been observed. As-deposited films were found to consist of a mixture of nickel-oxide hydroxide and nickel hydroxide, while annealing resulted in the conversion of the films into pure NiO. Also, annealed films exhibited no production of H2O2, unlike as-deposited films. Thus, antibacterial activity of as-deposited films is related to the presence of nickel-oxide hydroxide/nickel hydroxide which results in the production of reactive oxygen species and antibacterial activity. © 2009 Elsevier B.V. All rights reserved.

Research Area(s)

  • Bactericidal coatings, Electrodeposition, Oxides, Scanning electron microscopy, X-ray diffraction

Citation Format(s)

Electrodeposition for antibacterial nickel-oxide-based coatings. / Xi, Yan Yan; Huang, Bing Qiang; Djurišić, Aleksandra B.; Chan, Charis M.N.; Leung, Frederick C.C.; Chan, Wai Kin; Au, Doris T.W.

In: Thin Solid Films, Vol. 517, No. 24, 30.10.2009, p. 6527-6530.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal