Highly active V–TiO2 for photocatalytic degradation of methyl orange

Song, Liang; Xie, Tianhua; Chen, Zhi; Wu, Jiantao

doi:10.1016/j.apsusc.2009.06.029

Cited by 63 publications

(33 citation statements)

References 48 publications

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“…These values are consistent with the binding energies of V 2p 3/2 measured for V doped TiO 2 [14]. The presence of V 4+ species in the sol gel derived vanadium doped TiO 2 samples were probably due to the reduction of V 5+ by the decomposition of organics from starting materials [22,23]. The V 2p peaks of the fresh and used catalysts occur at the same binding energies before and after the photocatalytic reaction (Fig.…”

Section: Xps Analysissupporting

confidence: 86%

Transition metal oxide based TiO2 nanoparticles for visible light induced CO2 photoreduction

Ola

Maroto‐Valer

2015

Applied Catalysis A: General

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a b s t r a c tThe development of nanostructured visible light photocatalytic systems capable of harnessing the energy from the sun is imperative for producing carbon based fuels and chemicals. V-, Cr-and Co-TiO 2 photocatalysts immobilized onto quartz plates were successfully prepared by sol-gel method, investigated as a function of metal concentration and tested for visible light induced CO 2 reduction for the first time.Results established that introduction of these metal ions into the host framework not only modified the crystallinity of TiO 2 , but influenced its light absorption properties as well. Enhanced bathochromic shift from the UV region to longer wavelengths in the visible light region was observed with increasing metal concentrations for all samples especially Cr. The photoconversion rates were remarkably enhanced by the metal doped TiO 2 supports when compared to pure TiO 2 , with the Co-TiO 2 samples having the highest photoconversion rates.

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Section: Xps Analysissupporting

confidence: 86%

Transition metal oxide based TiO2 nanoparticles for visible light induced CO2 photoreduction

Ola

Maroto‐Valer

2015

Applied Catalysis A: General

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“…The tailing of the absorption band in the doped samples can be assigned to the charge-transfer transition from the d orbital of V 4+ to the conduction band of TiO2 (see [6,7]). The weak absorption band around 2.5eV (650-700nm) can be due to the d-d transitions of V3d electrons.…”

Section: Sample Characterizationmentioning

confidence: 99%

“…In recent years, a great deal of interest has been devoted to the photocatalytic degradation of organic water pollutants on semiconductor particles (see [4,5,6]). TiO2 can be applicable for the decomposition of undesired compounds in air as well as waste water, solar energy conversion and the production of clean energy resources through the water splitting reaction.…”

Section: Introductionmentioning

confidence: 99%

“…Among the transition metal ions, vanadium ion is attractive because vanadium doping can increase carrier lifetime and apparently also extend the absorption range of TiO2. Different methods had been chosen to prepare V-doped TiO2 catalysts, such as the sol-gel method, the metal ion-implantation method, the co-precipitation method, the hydrothermal method and so on (see [3][4][5][6]). It is promising to synthesize Vdoped TiO2 powders economically and practically by using the hydrothermal method because of its low cost, effectiveness and easy execution.…”

Section: Introductionmentioning

confidence: 99%

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The Visible Light Activity of the TiO₂ and TiO₂:V⁴⁺ Photocatalyst

Thủy

Van

Hải

2012

Nanomaterials and Nanotechnology

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TiO2 and vanadium-doped TiO2 nanoparticles were synthesized by using the hydrothermal method. The V doping contents are 0.0; 0.1; 0.3; 0.5; 0.7 and 0.9% molar.The vanadium-doped TiO2 nanoparticles have identical anatase phase with an average crystal size of 10-20nm. The oleic acid and ethanol solvents with different molar concentrations can make spherical nanograins, or stick form grains, which influence the photo activity of the materials. The absorption spectra of doped samples exhibited longtailed absorption in the visible light region above 380nm.The visible light photocatalytic activity was evaluated by the degradation of phenol aqueous solutions; after 360 min. under the visible irradiation, the normalized concentration of phenol decreased to 9%.

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“…One of the approaches to modify the photocatalytic activity of TiO 2 is doping by metal and non-metal ions. Different dopants such as metal ions: iron, chromium, nickel, manganese, niobium, cerium and other lanthanides, and non-metal atoms have been studied in detail [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Optical properties and photocatalytic activity of nanocrystalline TiO2 doped by 3d-metal ions

Kolesnik¹,

Лебедев²,

Гаршев³

2018

Nanosystems: Phys. Chem. Math.

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The influence of impurities on optical and photocatalytic properties was studied in a series of nanocrystalline TiO 2 with similar coherent scattering region sizes, phase compositions, surface areas and lattice parameters doped by Fe, Cr, Mn and V ions. Doping leads to an increase of absorption in the visible part of the spectrum due to the formation of additional levels in the band gap. In the case of Fe and Cr ions, d-d transitions are observed, whereas in the case of Mn and V ions, an additional band is associated with the transition from impurity level to Ec. The presence of impurities effectively suppresses photocatalytic activity in the methyl orange decoloration reaction.

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Highly active V–TiO2 for photocatalytic degradation of methyl orange

Cited by 63 publications

References 48 publications

Transition metal oxide based TiO2 nanoparticles for visible light induced CO2 photoreduction

Transition metal oxide based TiO2 nanoparticles for visible light induced CO2 photoreduction

The Visible Light Activity of the TiO₂ and TiO₂:V⁴⁺ Photocatalyst

Optical properties and photocatalytic activity of nanocrystalline TiO2 doped by 3d-metal ions

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Highly active V–TiO2 for photocatalytic degradation of methyl orange

Cited by 63 publications

References 48 publications

Transition metal oxide based TiO2 nanoparticles for visible light induced CO2 photoreduction

Transition metal oxide based TiO2 nanoparticles for visible light induced CO2 photoreduction

The Visible Light Activity of the TiO2 and TiO2:V4+ Photocatalyst

Optical properties and photocatalytic activity of nanocrystalline TiO2 doped by 3d-metal ions

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The Visible Light Activity of the TiO₂ and TiO₂:V⁴⁺ Photocatalyst