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Micro arc oxidation of nano-crystalline Ag-doped TiO2 semiconductors

Bayati, M. R ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1016/j.matlet.2010.12.006
  3. Publisher: 2011
  4. Abstract:
  5. Simple synthesis of silver doped TiO2 nanostructured layers by micro arc oxidation process is reported for the first time. The layers consisted of anatase and rutile phases whose characteristic XRD-peaks shifted toward lower diffraction angles when compared to the pure micro arc oxidized TiO 2 layers. Silver-doping was confirmed by XPS technique. The anatase phase crystalline size was determined as 27.6 and 21.8 nm for the layers grown under the voltages of 350 and 500 V. Employing a UV-Vis spectrophotometer, a red shift in the absorption edge of the layers was observed when silver was incorporated into the titania lattice
  6. Keywords:
  7. Absorption edges ; Anatase phase ; Crystalline size ; Diffraction angle ; Doped-TiO ; Doping ; Microarc ; Microarc oxidation ; Nano-structured layer ; Nanocrystallines ; Red shift ; Rutile phasis ; TiO ; Titania ; UV-Vis spectrophotometers ; XPS ; XRD ; Crystalline materials ; Oxidation ; Oxide minerals ; Semiconductor doping ; Titanium ; Titanium dioxide ; Silver
  8. Source: Materials Letters ; Volume 65, Issue 5 , March , 2011 , Pages 840-842 ; 0167577X (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0167577X10010517