Enhanced photocatalytic oxidation of propylene over V-doped TiO2 photocatalyst Reaction mechanism between V5+ and single-electron-trapped oxygen vacancy》.pdfVIP

Applied Catalysis B: Environmental 176–177 (2015) 160–172 Contents lists available at ScienceDirect Applied Catalysis B: Environmental j o u rn al h omepage: w w w. elsev /locate/apc atb Enhanced photocatalytic oxidation of propylene over V-doped TiO2 photocatalyst: Reaction mechanism between V5+ and single-electron-trapped oxygen vacancy Fengzhu Ren a , Haiyan Li b,c , Yuanxu Wang a,∗ , Jianjun Yang b,∗∗ a Institute for Computational Materials Science, School of Physics and Electronics, Henan University, Kaifeng 475004, China b Key Laboratory for Special Functional Materials, Henan University, Kaifeng 475004, China c College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China a r t i c l e i n f o a b s t r a c t Article history: The novel V-doped TiO2 (V-TiO2 [NTA]) samples with different (0–10%) concentration have been suc- Received 21 January 2015 cessfully prepared by a facile solid state sintering method using the nanotubular titanic acid (NTA) as Received in revised form 25 March 2015 titanium precursor for the first time, which shows remarkable photocatalytic activity for degradation Accepted 29 March 2015 of propylene under visible-light irradiation. Based on the density function theory (DFT) calculations in Available online 31 March 2015 conjunction with a series of experimental characterization techniques including Raman spectra, TEM, XPS, ESR, and UV–vis DRS, a new V4+ ions formation mechanism by means of the electron trapped at Keywords