RETRACTED: Mechanism of phenol photodegradation in the presence of pure and modified-TiO2: A review

Grabowska, Ewelina; Reszczyńska, Joanna; Zaleska, Adriana

doi:10.1016/j.watres.2012.07.048

Cited by 323 publications

(161 citation statements)

References 46 publications

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“…The pathway, we have observed, is consistent with the reaction mechanisms already proposed in literature when nano-sized catalysts were employed; a recent review sums up several examples [22] and we also confirm here the pathway with P25. The large gap in the physicalchemical properties does not affects the route of degradation process between the nano and micro particles.…”

Section: Photocatalytic Degradation Of Phenol In Presence Of Tio 2 Posupporting

confidence: 91%

“…Among the adsorptionkinetic models, the Lamgmuir-Hinshelwood (L-H) model is the most applied to describe photocatalytic mineralization reactions; the rate of the reaction is proportional to the surface coverage by the pollutant, but as the concentration of the reactant increases above a certain level, the saturation of the catalyst surface makes decrease the reaction rate [22].…”

Section: Photocatalytic Testsmentioning

confidence: 99%

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Micro-sized TiO2 catalyst in powder form and as coating on porcelain grès tile for the photodegradation of phenol as model pollutant for water phase

Bianchi¹,

Pirola²,

Cerrato³

et al. 2017

Adv Mater Sci

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In presence of TiO 2 and irradiation, phenol can be degraded by hydroxyl radicals or directly via photogenerated carriers, as occurs in photocalytic processes. In this work a commercial micro-sized TiO 2 sample in powder form and industrially coated on porcelain grès tiles were tested in water remediation with phenol as model molecule. Firstly, we investigated the behaviour of the commercial micro-sized TiO 2 comparing the results with reference nano-sized catalyst in the phenol photodegradation process, widely studied in the last decades. Following the phenol concentration as well as the main intermediates formation over time by HPLC analysis, and the mineralization by TOC analysis, we presented results about the photocatalytic behaviour in terms of adsorption, by-products formation, and reaction rate at different phenol starting concentrations. In particular, with the photocatalytic tiles, phenol photodegradation percentage is almost the same at 15 ad 25 ppm (78% and 73% respectively), and much lower at 50 ppm (46%) after 6 hours of test.

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Section: Photocatalytic Degradation Of Phenol In Presence Of Tio 2 Posupporting

confidence: 91%

Section: Photocatalytic Testsmentioning

confidence: 99%

Micro-sized TiO2 catalyst in powder form and as coating on porcelain grès tile for the photodegradation of phenol as model pollutant for water phase

Bianchi¹,

Pirola²,

Cerrato³

et al. 2017

Adv Mater Sci

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show abstract

“…For pesticides, mineralization of pesticides by photocatalytic degradation has been reported and the by-products and intermediates of organophosphate pesticides by photocatalytic degradation were recently presented [81]. Pharmaceutical compounds [19,82], endocrinedisrupting compounds [82], UV filters [83], and phenol [84] have also been thoroughly surveyed for their fate and their TPs during photolysis.…”

Section: Transformation Products Formed By Abiotic Processes In Aquatmentioning

confidence: 99%

Targeted and non-targeted liquid chromatography-mass spectrometric workflows for identification of transformation products of emerging pollutants in the aquatic environment

Bletsou

Jeon

Hollender

et al. 2015

TrAC Trends in Analytical Chemistry

291

184

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A B S T R A C TIdentification of transformation products (TPs) of emerging pollutants is challenging, due to the vast number of compounds, mostly unknown, the complexity of the matrices and their often low concentrations, requiring highly selective, highly sensitive techniques. We compile background information on biotic and abiotic formation of TPs and analytical developments over the past five years. We present a database of biotic or abiotic TPs compiled from those identified in recent years. We discuss mass spectrometric (MS) techniques and workflows for target, suspect and non-target screening of TPs with emphasis on liquid chromatography coupled to MS (LC-MS). Both low-and high-resolution (HR) mass analyzers have been applied, but HR-MS is the technique of choice, due to its high confirmatory capabilities, derived from the high resolving power and the mass accuracy in MS and MS/MS modes, and the sophisticated software developed.

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“…Among recalcitrant organic compounds, phenol is considered generally to be one of the most toxic organic pollutants which cause several environmental problems [1]. The phenol pollution can come from various pollution sources such as paint, pesticides, coal conversion, polymeric resin, petroleum and petrochemical industries [2]. In aquatic environment, phenol is harmful to organisms at low concentration due to its toxicity, persistence and bioaccumulation.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Intermediate Compounds of Phenol in Photocatalysis Process

Trinh¹,

Le²,

Channei³

et al. 2016

IJCEA

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Abstract-Determining the degradation mechanism of phenol under illumination of titanium dioxide (TiO 2 ) is main task in this present work. The experiment carried out with 100 ppm of phenol solution and 0.9 g/L TiO 2 under UV-C light. The COD and UV-Vis measurement were applied in the present work to evaluate the efficiency of phenol removal. The results showed that photocatalysis removed effectively phenol from water after 24 hours of UV-C illumination. In the first 16 hours, there was a slight decrease in the COD value. However, it decreased dramatically after 24 hours of illumination. Similarly, the result from UV-Vis spectrophotometer also showed the same reduction of phenol peak. These proved that the photocatalytic degradation of phenol include two main phases. Phenol was transformed to by-products in the intermediate compound phase. Subsequently, these intermediate compoundss were removed from water under the form of carbon dioxide and water in the mineralization phase. Therefore, it is necessary to identify intermediate phase of phenol photodegradation in the further work.

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RETRACTED: Mechanism of phenol photodegradation in the presence of pure and modified-TiO2: A review

Cited by 323 publications

References 46 publications

Micro-sized TiO2 catalyst in powder form and as coating on porcelain grès tile for the photodegradation of phenol as model pollutant for water phase

Micro-sized TiO2 catalyst in powder form and as coating on porcelain grès tile for the photodegradation of phenol as model pollutant for water phase

Targeted and non-targeted liquid chromatography-mass spectrometric workflows for identification of transformation products of emerging pollutants in the aquatic environment

Investigation of Intermediate Compounds of Phenol in Photocatalysis Process

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