화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.65, 370-379, September, 2018
DOI10.1016/j.jiec.2018.05.008  Export Citation
Evaluation of TiO2/V2O5 and N,F-doped-TiO2/V2O5 nanocomposite photocatalysts toward reduction of Cr(VI) and oxidation reactions by ㆍOH radicals
A. Giannakas, F. Bairamis1, I. Papakostas1, T. Zerva1, and I. Konstantinou1, †
  • Department of Business Administration of Agricultural and Food Enterprises, University of Patras, G. Seferi 2, Agrinio 30100, Greece
  • 1Department of Chemistry, University of Ioannina, Ioannina 45110, Greece
E-mail:
V2O5/TiO2 photocatalysts, with V2O5 particles supported on TiO2 (TV), N-TiO2 (NTV) and N/F-TiO2 (NFTV), were prepared with 5% wt. V2O5 loading and 450, 550 °C as calcination temperatures. XRD analysis showed the formation of anatase TiO2 and very small peaks of V2O5. DRS UV.vis spectra showed that V2O5 coupling extended the absorption edge into the visible light region. Photocatalysts calcined at 450 °C exhibited higher rates of Cr(VI) reduction and ㆍOH radical photogeneration than photocatalysts calcined at 550 °C. For catalysts at 450 °C, photocatalytic reduction of Cr(VI) follows the trend TV450 > NTV450 > NFTV450 while the ㆍOH generation followed the reverse trend.
Keywords:Photocatalysis;V2O5;TiO2;N/F doping;Cr(VI)
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