Titania Surface Modification with Cerium Species for Wastewater Treatment

Atyaoui, Atef; Sutter, Éliane; Bousselmi, Latifa

doi:10.1007/s10562-013-1011-9

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…In previous work, we have doped titania thin layers with cerium species and studied its effect on the photocatalytic degradation of Amido Back. Doping titania with an appropriate amount of Ce can effectively improve its photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Effect of the anodization voltage on the dimensions and photoactivity of titania nanotubes arrays

Atyaoui

Cachet

Sutter

et al. 2013

Surface & Interface Analysis

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This work compares the behaviors of TiO2 nanotube (TNTs) array obtained by anodization of Ti foils in an ethylene glycol/NH4F/water electrolyte with different applied voltages during a constant anodization time, and for the same electrolyte composition. The crystal structure and surface morphology of the annealed anodic films are investigated by X‐Ray diffraction system, Raman spectroscopy and scanning electron microscopy, respectively. The TiO2 nanotubes obtained at potentials of 20–40–60 V show different inner diameters (42–89–124 nm), tube length (1.2–3.3–12.7 µm) and wall thicknesses (12–15–18 nm). The influence of these geometric parameters on the photoelectrochemical properties and the photocatalytic activity were investigated in detail. The results showed that the photocatalytic performances of TNT films are improved when the specific surface, the tube length and the solid fraction are increased, but the increase is slowed down when a limiting thickness of the layer is reached. The surface states which usually show high density in nanostructured layers do not seem to influence significantly the photocatalytic activity of the layers. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 99%

Effect of the anodization voltage on the dimensions and photoactivity of titania nanotubes arrays

Atyaoui

Cachet

Sutter

et al. 2013

Surface & Interface Analysis

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“…But the visible‐light activity of Nb‐TiO 2 microspheres was higher than that of Nb‐TiO 2 /WO 3 microspheres because electrons excited by visible light in the deep levels could not efficiently reduce WO 3 in Nb‐TiO 2 /WO 3 microspheres and had to find another way to recombine with the photogenerated holes. Atyaoui and coworkers prepared a series of Ce‐TiO 2 samples by the electrochemical deposition (ECD) of cerium(IV) onto TiO 2 /Ti electrodes and studied their photocatalytic activity on degradation of Black Amido (BA). They found that doping with cerium could significantly improve the photocatalytic activity of TiO 2 and that the photocatalytic activity decreased when the doping concentration was higher than 0.6 at.%, because the higher doping level might convert the trapping sites into recombination centers for the charge carrier species, thereby leading to a decrease in the photocatalytic ability of TiO 2 .…”

Section: Photocatalytic Degradationmentioning

confidence: 99%

Review on Undoped/Doped TiO₂Nanomaterial; Synthesis and Photocatalytic and Antimicrobial Activity

Yadav

Jaiswar

2016

Journal of the Chinese Chemical Society

114

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This review covers the various synthetic methods of doped and undoped TiO 2 nanomaterials, ranging from single-doped and co-doped to multidoped with transition-metal ions, rare earth metal ions, and other metals and nonmetals ions. The effects of doping on the physiochemical propertiesas well as the photocatalytic and antimicrobial activities of TiO 2 nanomaterial are discussed. The results from the literature show that doping of TiO 2 shifts the absorption edge to the visible region as a result of the decrease in the bandgap due to the formation of new energy levels in the bandgap. The dopent also acts as a trapping center for electrons and holes, thereby reducing the recombination rate of charge carriers and increasing the photocatalytic and antimicrobial activity of TiO 2 nanomaterials. All multidoped TiO 2 nanomaterials show higher activity than their undoped, single-doped, and co-doped counterparts.

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Nanocatalyst from sol–sol doping of TiO2 with Vanadium and Cerium and its application for 3,4 Dichloroaniline degradation using visible light

Padmini¹,

Miranda²

2013

Chemical Engineering Journal

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Titania Surface Modification with Cerium Species for Wastewater Treatment

Cited by 4 publications

References 25 publications

Effect of the anodization voltage on the dimensions and photoactivity of titania nanotubes arrays

Effect of the anodization voltage on the dimensions and photoactivity of titania nanotubes arrays

Review on Undoped/Doped TiO₂Nanomaterial; Synthesis and Photocatalytic and Antimicrobial Activity

Nanocatalyst from sol–sol doping of TiO2 with Vanadium and Cerium and its application for 3,4 Dichloroaniline degradation using visible light

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Titania Surface Modification with Cerium Species for Wastewater Treatment

Cited by 4 publications

References 25 publications

Effect of the anodization voltage on the dimensions and photoactivity of titania nanotubes arrays

Effect of the anodization voltage on the dimensions and photoactivity of titania nanotubes arrays

Review on Undoped/Doped TiO2Nanomaterial; Synthesis and Photocatalytic and Antimicrobial Activity

Nanocatalyst from sol–sol doping of TiO2 with Vanadium and Cerium and its application for 3,4 Dichloroaniline degradation using visible light

Contact Info

Product

Resources

About

Review on Undoped/Doped TiO₂Nanomaterial; Synthesis and Photocatalytic and Antimicrobial Activity