Improved visible light photocatalytic activity of TiO2 co-doped with Vanadium and Nitrogen

Jaiswal, R.; Patel, N.; Kothari, D.C.; Miotello, A.

doi:10.1016/j.apcatb.2012.06.030

Cited by 172 publications

(127 citation statements)

References 40 publications

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“…5 Table I. [54][55][56], pentachlorophenol and its salts [57], rhodamine B [58], 4-chlorophenol [56], and 4-nitrophenol [56]. Most of the previous theoretical studies based on DFT (without the HSE calculations) showed that (V-N) codoped TiO2 can reduce the bandgap of TiO2 and should enhance the photocatalytic activity under the visible range of the solar spectrum [40,53,56,59,60].…”

Section: Density Of States and Defect Levelsmentioning

confidence: 99%

Passivated co-doping approach to bandgap narrowing of titanium dioxide with enhanced photocatalytic activity

Na-Phattalung

Limpijumnong

2017

Applied Catalysis B: Environmental

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Section: Density Of States and Defect Levelsmentioning

confidence: 99%

Passivated co-doping approach to bandgap narrowing of titanium dioxide with enhanced photocatalytic activity

Na-Phattalung

Limpijumnong

2017

Applied Catalysis B: Environmental

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“…The formation of Ti 3+ in the Cu-TiO 2 /PU could be due to the effect of the Cu dopant, which defected the TiO 2 lattice. The Cu doping led to the oxygen vacancies in the TiO 2 lattice, resulting in the reduction of Ti 4+ into Ti 3+ [44,45]. Ti 3+ could more easily generate excited electrons than Ti 4+ because the electron number of Ti 3+ (19) is higher than that of Ti 4+ (18), and thus the electrons in Ti 4+ are more strongly bound to the titanium nuclei than those in Ti 3+ [46].…”

Section: Resultsmentioning

confidence: 97%

The advanced removal of benzene from aerosols by photocatalytic oxidation and adsorption of Cu–TiO 2 /PU under visible light irradiation

Pham

Lee

2016

Applied Catalysis B: Environmental

104

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“…Gombac et al [36] reported use of boron and nitrogen, Jaiswal et al [37] reported use of vanadium and nitrogen, and Gao et al [38] reported use of tungsten and nitrogen. In this work, TiO 2 co-doped with N and Fe was prepared.…”

Section: Resultsmentioning

confidence: 99%

Cooperation between N and Fe in co-doped TiO2 photocatalyst

2015

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TiO 2 photocatalysts co-doped with N and Fe were synthesized by the sol-gel method. Cooperation of N and Fe in the co-doped TiO 2 was studied by monitoring NH 3 decomposition, X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-Vis) absorption spectroscopy, and simulation based on density functional theory (DFT). The results from NH 3 decomposition revealed that cooperation of N and Fe broadened the range of response of TiO 2 to visible light and also enhanced the photocatalytic activity of TiO 2 under ultraviolet light. The XRD patterns and SEM and HRTEM images indicated that the co-doped samples prepared were nanometric anatase with an average particle size of 20 nm. Co-doping with N and Fe inhibited grain growth of TiO 2 and resulted in larger lattice distortion. XPS analysis showed that the doped N and Fe atoms were replacing lattice oxygen and Ti atoms, respectively. UV-Vis absorption spectra of the co-doped sample showed that the optical absorption edge had been shifted to approximately 675 nm. The DFT results confirmed that cooperation of the Fe3d and N2p orbits reduced the energy gap of TiO 2 and thus broadened its range of response to visible light. The synergistic action of the electron density around N and Fe in the co-doped TiO 2 enhanced its photochemical stability. In addition, a photocatalytic reaction mechanism for TiO 2 co-doped with N and Fe revealed the presence of N2p, Fe3d, and Ti3d orbits as photogenerated holeelectron traps, which enhanced the photocatalytic quantum efficiency.

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Improved visible light photocatalytic activity of TiO2 co-doped with Vanadium and Nitrogen

Cited by 172 publications

References 40 publications

Passivated co-doping approach to bandgap narrowing of titanium dioxide with enhanced photocatalytic activity

Passivated co-doping approach to bandgap narrowing of titanium dioxide with enhanced photocatalytic activity

The advanced removal of benzene from aerosols by photocatalytic oxidation and adsorption of Cu–TiO 2 /PU under visible light irradiation

Cooperation between N and Fe in co-doped TiO2 photocatalyst

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