Efficient photocatalytic degradation of organic water pollutants using V–N-codoped TiO2 thin films

Patel, N.; Jaiswal, R.; Warang, Trupti N.; Scarduelli, Giorgina; Dashora, Alpa; Ahuja, B.L.; Kothari, D.C.; Miotello, A.

doi:10.1016/j.apcatb.2013.11.033

Cited by 116 publications

(55 citation statements)

References 35 publications

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“…It is generally preferred that the absolute positions of the band edges are engineered to locate at the levels suitable for water splitting in order to acquire hydrogen as a clean and renewable energy source [1][2][3][4]. In addition, the reduced band-gap TiO2 can be adapted as an antibacterial agent [5] and an agent for the degradation of organic pollutants [6].…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…Phenolic compounds constitute an important family of wastewater pollutants produced by chemical, petrochemical, foodprocessing, or biotechnological industries (Patel et al 2014). The current levels of pollutant removal from water, with conventional water treatment technologies, are often not fully satisfactory when wastewater streams contain significant amounts of hardly biodegradable compounds such as phenolic pollutants (Adán et al 2011).…”

Section: Introductionmentioning

confidence: 99%

The influence of Ce doping of titania on the photodegradation of phenol

Martin

Villabrille

Rosso

2015

Environ Sci Pollut Res

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Pure and cerium-doped [0.05, 0.1, 0.3, 0.5, and 1.0 Ce nominal atomic % (at.%)] TiO2 was synthesized by the sol-gel method. The obtained catalysts were characterized by X-ray diffraction (XRD), UV-visible diffused reflectance spectroscopy (DRS), Raman, and BET surface area measurement. The photocatalytic activity of synthesized samples for the oxidative degradation of phenol in aqueous suspension was investigated. The content of Ce in the catalysts increases both the transition temperature for anatase to rutile phase transformation and the specific surface area, and decreases the crystallite size of anatase phase, the crystallinity, and the band gap energy value. The material with higher efficiency corresponds to 0.1 Ce nominal at.%. Under irradiation with 350 nm lamps, the degradation of phenol could be described as an exponential trend, with an apparent rate constant of (9.1 ± 0.6) 10(-3) s(-1) (r(2) = 0.98). Hydroquinone was identified as the main intermediate.

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Section: Photocatalytic (Pc) and Photoelectrocatalytic (Pec) Degradatmentioning

confidence: 97%

“…5c show that N doping with TEA (TiO 2 -T) is not stable against heat treatment, which is reflected by the small signal commonly associated with adsorbed species (399.6-400.6 eV [55]). In contrast, the peaks for N 1s measured in the samples modified with NH 4 F (TiO 2 -NF and TiO 2 -TNF) exhibit higher intensity and broader distribution, which indicates the presence of different species [55,56]. N 1s binding energy between 396 and 399 eV is associated with substitutional N into the TiO 2 lattice [57,58], and signals at higher binding energy such as 402-405 eV are related to interstitial N in the TiO 2 lattice [59].…”

Section: Photocatalytic (Pc) and Photoelectrocatalytic (Pec) Degradatmentioning

confidence: 97%

Directing photocatalytic and photoelectrocatalytic performance of TiO2 by using TEA and NH4F as doping precursors

Castellanos-Leal

Acevedo–Peña

Lartundo-Rojas

et al. 2016

J Sol-Gel Sci Technol

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Triethylamine (TEA) and NH 4 F-modified TiO 2 powders and thin films were prepared by combining solgel and hydrothermal processes. Modification with TEA results in increased specific surface area and induces energy states below the conduction band of TiO 2 . On the other hand, the use of NH 4 F decreases the band-gap, displacing the valence band. Employing radical-scavenging agents, it was found that formation of O 2 * is preferred in TEA-modified TiO 2 , whereas generation of both O 2 * and OH * results from simultaneous modification. Furthermore, the photocatalytic degradation rate was directly proportional to their specific surface area. However, this trend was reversed in a photoelectrocatalytic cell, due to the fact that the photogenerated electrons are rapidly transported to the rear contact, which restrains their transfer to the dissolved oxygen to generate O 2 * . Therefore, the presence of OH * radicals and direct charge transfer processes appears to play a key role in the photoelectrocatalytic process. Graphical Abstract

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Efficient photocatalytic degradation of organic water pollutants using V–N-codoped TiO2 thin films

Cited by 116 publications

References 35 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 influence of Ce doping of titania on the photodegradation of phenol

Directing photocatalytic and photoelectrocatalytic performance of TiO2 by using TEA and NH4F as doping precursors

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