TY - JOUR
T1 - Antibacterial and photocatalytic activities of TiO2 nanotubes
AU - Chan, Charis May Ngor
AU - Ng, Alan Man Ching
AU - Fung, Man Kin
AU - Cheng, Hoi Sing
AU - Guo, Mu Yao
AU - Djurišić, Aleksandra B.
AU - Leung, Frederick Chi Ching
AU - Chan, Wai Kin
N1 - Funding Information:
This study is partly supported by the University Development Fund, Research Fund for the Control of Infectious Diseases grant (Ref. No. 07060602) funded by the Health, Welfare, and Food Bureau, Hong Kong Government and RGC CRF CityU6/CRF/08. The authors thank Prof. S.Y. Tong for useful discussions on the possible effects of different adsorbates and the defects on TiO2 surfaces.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - antibacterial activity
KW - nanotubes
KW - oxides
KW - photocatalysis
UR - http://www.scopus.com/inward/record.url?scp=84879667392&partnerID=8YFLogxK
U2 - 10.1080/17458080.2011.616540
DO - 10.1080/17458080.2011.616540
M3 - Article
AN - SCOPUS:84879667392
SN - 1745-8080
VL - 8
SP - 859
EP - 867
JO - Journal of Experimental Nanoscience
JF - Journal of Experimental Nanoscience
IS - 6
ER -