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Photo-degradation of methelyne blue over V2O5- TiO2 nano-porous layers synthesized by micro arc oxidation

Bayati, M. R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1007/s10562-009-0231-5
  3. Abstract:
  4. V2O5-TiO2 porous layers were synthesized via micro-arc oxidation for the first time. The effect of the applied voltage on morphology, composition, and photo-activity of the layers was investigated. The layers, which consisted of anatase, rutile, and vanadium pentoxide phases, revealed an enhanced photo-activity. About 93% of methylene blue solution was degraded on the synthesized layers after 120 min UV-irradiation with a reaction rate constant of k = 0.0228 min-1. The band gap energies of the vanadia-titania and pure titania layers were calculated as 2.56 and 3.39 eV, respectively
  5. Keywords:
  6. Vanadium oxide ; Applied voltages ; Band gap energy ; Methylene blue solution ; Microarc oxidation ; Nano-porous ; Porous layers ; TiO ; Titania layers ; UV irradiation ; Vanadia-titania ; Vanadium oxide ; Vanadium oxides ; Vanadium pentoxide ; Catalysis ; Cavity resonators ; Oxidation ; Oxide minerals ; Rate constants ; Titanium ; Titanium dioxide ; Vanadium ; Vanadium alloys ; Vanadium compounds ; Titanium oxides
  7. Source: Catalysis Letters ; Volume 134, Issue 1-2 , 2010 , Pages 162-168 ; 1011372X (ISSN)
  8. URL: http://link.springer.com/article/10.1007%2Fs10562-009-0231-5