Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 30, Issue 3, Pages 447-451Publisher
JOURNAL WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-015-1169-7
Keywords
doped TiO2; polyurethane; hybrid film; photocatalytic activity; antibacterial
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Funding
- National Natural Science Foundation of China [51208141]
- Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [QA201206]
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The waterborne polyurethane/doped TiO2 nanoparticle hybrid films were prepared. Nd, I doped TiO2 was prepared with a 50 nm particle size firstly. The hybrid film was prepared by mixing doped TiO2 with waterborne polyurethane, followed by heat treatment. The presence and nanometric distribution of doped TiO2 nanoparticles in prepared membranes is evident according to SEM images. The photocatalytic activities of doped TiO2 were significantly enhanced compared with pure TiO2 powders. After the hybrid film fabrication, the photocatalytic activities were almost the same as the pure catalysts with k(MB) of 0.046. In the antibacterial testing, the hybrid films can inhibit E. coli growth. A significant decrease in membrane fluidity and increase of permeability of E. coli were observed.
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