Antibacterial and photocatalytic activities of TiO2 nanotubes

Charis May Ngor Chan, Alan Man Ching Ng, Man Kin Fung, Hoi Sing Cheng, Mu Yao Guo, Aleksandra B. Djurišić, Frederick Chi Ching Leung, Wai Kin Chan

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


TiO2 nanotubes have been prepared by anodisation of titanium foil and their antibacterial activities have been tested against Gram-positive bacteria (Bacillus atrophaeus) while photocatalytic activity was tested for the degradation of the methyl orange dye. We found that the annealing temperature strongly affected antibacterial activity and photocatalytic dye degradation, as well as the production of reactive oxygen species under illumination. However, different trends were observed for dye degradation and antibacterial activity dependence on the annealing temperature. The relationship between annealing conditions, crystal structure, reactive oxygen species generation, dye degradation and antibacterial activity is discussed.

Original languageEnglish
Pages (from-to)859-867
Number of pages9
JournalJournal of Experimental Nanoscience
Issue number6
Publication statusPublished - 2013
Externally publishedYes


  • antibacterial activity
  • nanotubes
  • oxides
  • photocatalysis


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