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An enhancement in the photocatalytic activity of TiO 2 by the use of Pd: The question of layer sequence in the resulting hierarchical structure

Rezaeian Delouei, M ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1007/s11998-010-9274-1
  3. Publisher: 2011
  4. Abstract:
  5. TiO 2 and Pd-modified TiO 2 photocatalysts were prepared by sol-gel method. X-ray diffraction (XRD) data showed that the presence of Pd in TiO 2 catalyst decreases the crystalline size of TiO 2 and stabilizes anatase phase. The study of the photocatalytic activity of the films via Linear Sweep Voltametry (LSV) plots and antibacterial test against Escherichia coli ATCC 25922-a gram negative bacterium-showed that Pd increases the photocatalytic activity of the coatings. Besides, the sequence of layer deposition (TiO 2 and Pd-modified TiO 2) influences the photocatalytic properties. In other words, more photocatalytic activity is obtained when Pd-modified layer is deposited first
  6. Keywords:
  7. Photocatalytic activity ; Antibacterial tests ; E. coli ; Pd ; Escherichia coli ; Gels ; Oxides ; Sol-gel process ; Sol-gels ; Sols ; Titanium ; Titanium dioxide ; X ray diffraction ; Photocatalysts
  8. Source: Journal of Coatings Technology Research ; Volume 8, Issue 1 , January , 2011 , Pages 75-81 ; 15470091 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs11998-010-9274-1