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Synthesis of C-N-Y tri-doped TiO2 photo-catalyst for MO degradation and characterization

Hoseinian Maleki, F ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1088/2053-1591/2/10/105011
  3. Publisher: Institute of Physics Publishing , 2015
  4. Abstract:
  5. In this researchC-N-Y tri-doped TiO2 nanopowders were synthesized by the sol-gel method. TheC- N-Y Ti O2 photo-catalyst was prepared using hexamine and yttrium nitrate Hexahydrate as the dopant precursors. Methyl-orange (MO) was used to study the photocatalytic performance of the doped Ti O2 underUVirradiation. The synthesized samples were characterized by x-ray diffraction, x-ray photoelectron spectroscopy,UV-vis diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, Transmission electron microscopy, Photoluminescence and Field emission scanning electron microscopy. The tri-doped sample with8%N, 0.4% Y and 1.5%Cexhibited enhanced photocatalytic efficiencies. After 100 min of irradiation withUVlight, 87% ofMOwas decomposed by C-N-Y tri-doped Ti O2 sample. It is suggested that the co-activity ofCandNcould make the intra-gap localized states above the valence band of Ti O2, and carbon in Ti O2 structure causes carbonate species to appear. These carbonate species acted as photosensitizer on the Ti O2 surface to promote photocatalytic activity of the as synthesized sample
  6. Keywords:
  7. Band gap ; Hexamine ; Photoactivity ; Sol-gel ; Tridoped TiO2
  8. Source: Materials Research Express ; Volume 2, Issue 10 , October , 2015 ; 20531591 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/2053-1591/2/10/105011/meta;jsessionid=CFB87E7211D230331FBCEFE77C954803.c4.iopscience.cld.iop.org