Journal
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
Volume 97, Issue 12, Pages 5565-5573Publisher
SPRINGER
DOI: 10.1007/s00253-013-4889-7
Keywords
Photocatalysis; Antibacterial activity; ZnO; TiO2
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Funding
- RGC CRF [CityU6/CRF/08]
- Strategic Research Theme, University Development Fund
- University of Hong Kong
- National Natural Science Foundation of China [NSFC 11204185]
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We studied antibacterial and photocatalytic activity of anatase TiO2 and ZnO in phosphate buffer and saline solution. We found that the different anions in the suspension medium (chloride and phosphate) significantly affected the following suspension properties: the stability of nanoparticle suspension, the release of metal ions from the nanoparticles, and the production of the reactive oxygen species by the nanoparticles. As a result, antibacterial activity and photocatalytic dye degradation were also affected. However, the effect of the suspension medium was different for ZnO and TiO2. Obtained results are discussed.
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