Photodegradation of 2,4,6-trichlorophenol using natural hematite modified with chloride of zirconium oxide

Benbachir, Hayet; Gaffour, Hafida; Mokhtari, M.

doi:10.1007/s11144-017-1248-1

Cited by 24 publications

(6 citation statements)

References 57 publications

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“…The degradation to the mineralization takes place thanks to the presence of superoxide radicals accompanied by the holes until the disappearance of the total organic carbon [32,[53][54][55][56], implying a mechanism in which the superoxide radicals are carrying out the degradation of the aromatic ring simultaneously with the elimination of chlorine, since the formation of monochlorinated intermediates or phenols is not observed by the ultraviolet spectrum.…”

Section: Ldhmf-400 °Cmentioning

confidence: 99%

“…Therefore, it is feasible to think of advanced oxidation processes as a more effective alternative for the destruction of this pollutant, such as ozone, hydrogen peroxide, photocatalysts, and even combinations of these. Among the semiconductors most used as photocatalysts in the degradation of 2,4,6-trichlorophenol are TiO 2 , Fe 2 O 3 , CeO 2 , CuO, ZnO, ZrO, and Al 2 O 3 , among others; they have been used either alone and mixed or doped, preferably with metals such as Ag, Au, Fe, Co, and Ni, to degrade the pollutant in a significant way [31][32][33][34][35][36]. The present work reports MgO-MgFe 2 O 4 derived from layered double hydroxides Mg/Fe with band energy in the range of 2.28-2.47 eV, and its application in the degradation of 2,4,6-trichlorophenol in the aqueous phase using ultraviolet radiation as a source of light.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Degradation of 2,4,6-Trichlorophenol by MgO–MgFe2O4 Derived from Layered Double Hydroxide Structures

et al. 2019

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In recent years, the search for solutions for the treatment of water pollution by toxic compounds such as phenols and chlorophenols has been increasing. Phenols and their derivatives are widely used in the manufacture of pesticides, insecticides, paper, and wood preservers, among other things. Chlorophenols are partially biodegradable but not directly photodegradable by sunlight and are extremely toxic—especially 2,4,6-trichlorophenol, which is considered to be potentially carcinogenic. As a viable proposal to be applied in the treatment of water contaminated with 2,4,6-trichlorophenol, this paper presents an application study of the thermally activated Mg/Fe layered double hydroxides as photocatalysts for the mineralization of this contaminant. Activated Mg/Fe layered double hydroxides were characterized by X-ray diffraction, thermal analysis, N2 physisorption, and scanning electron microscopy with X-ray dispersive energy. The results of the photocatalytic degradation of 2,4,6-trichlorophenol in aqueous solution showed good photocatalytic activity, with an efficiency of degradation of up to 93% and mineralization of 82%; degradation values which are higher than that of TiO2-P25, which only reached 18% degradation. The degradation capacity is attributed to the structure of the MgO–MgFe2O4 oxides derived from double laminate hydroxide Mg/Fe. A path of degradation based on a mechanism of superoxide and hollow radicals is proposed.

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Section: Ldhmf-400 °Cmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of 2,4,6-Trichlorophenol by MgO–MgFe2O4 Derived from Layered Double Hydroxide Structures

et al. 2019

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“…This makes it recalcitrant to biodegradation and leads to its interference in mitochondrial oxidative phosphorylation through the inhibition of cytochrome P450-dependent mixed-function oxidases (NCBI 2021 ). The recalcitrant nature of 2,4,6-TCP results in high toxicity for a considerable period (Benbachir et al 2017 ). This chemical enters the environment through several routes like industrial waste, insecticides or by degradation of complex chlorinated hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

Effects of 2,4,6-Trichlorophenol on Clarias batrachus: a biomarkers approach

Mukherjee¹,

Ferreira

Saha

2022

Environ Sci Pollut Res

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Abstract2,4,6-Trichlorophenol (2,4,6-TCP) is a common waste among the resulting chlorophenols generated in the production of common products classified as an extremely toxic, mutagenic, carcinogenic and highly persistent xenobiotic in the environment. To evaluate the impact of 2,4,6-TCP in aquatic systems, the catfish species Clarias batrachus has been selected to test its toxicity due to its high market value and consumption in India. Here is presented the impact of this compound on different physiological parameters of fish: haematological parameters (haemoglobin, total erythrocyte count, total leucocyte count and mean corpuscular haemoglobin), biochemical parameters (total serum protein and total serum glucose), growth and reproductive parameters (condition factor, hepatosomatic index, maturity index, specific growth rate, growth hormone, 17β-estradiol and testosterone), exposed to two concentrations of 2,4,6-TCP (0.5 mg/L and 1 mg/L — 1/10th and 1/20th of the LC50) for a period of 15, 30 and 45 days. The results showed that C. batrachus even when exposed to the lower concentration (0.5 mg/L) for the shortest time (15 days) negatively impacted the organism in all the assessed parameters. This was highlighted by the Integrated Biomarker Response index (IBR), showing worse scores for the treatments (up to 20 × worse than the control). This work highlights the importance of continued research on the impact of 2,4,6-TCP, on an important commercial, supported by the high environmental persistence of this compound that can reach the same range of tested concentrations.

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“…Throughout aquatic environments. Since a noticeable increase in the disposal of refractory organic materials has the potential for environmental and biological damage and has already severely impacted water quality [1], a novel technology for water treatment has gained significant interest. Dyes in wastewater are proposed to be pollutants that cause considerable environmental damage, including toxicological effects on micro-organisms and color pollution [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

An External Energy Independent WO3/MoCl5 Nano-Sized Catalyst for the Superior Degradation of Crystal Violet and Rhodamine B Dye

Kim

Bae

et al. 2019

Catalysts

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In this study, the synthesis of a novel catalyst WO3/MoCl5 was carried out by the thermal method. The method gave an entirely different product compared to previous studies that doped Mo on the surface of semiconductor metal oxides. The degradation reaction of crystal violet (CV) and rhodamine B (RB) dye were done without any energy source. The results showed an incomparably superior result for degradation, with a reaction rate constant of 1.74 s−1 for 30 ppm CV, 1.08 s−1 for 30 ppm RB, and a higher value than 1 s−1 for both cases of 50 ppm dye solution. To the author’s knowledge, this catalyst has the highest reaction rate compared to other studies that targeted CV and RB, with an immense reaction rate increase of more than 100 times. Reusability of the three trials was verified, and the only process required was washing the catalyst after the reaction. One of the drawbacks of the advanced oxidation process (AOP), which has a degradation percent limit, has been solved, since 100% mineralization of the dye was available using this catalyst. FT-IR spectroscopy revealed that W-O-Mo linkage was successfully processed while Mo-Cl linkage has retained. 1H-NMR spectroscopy results confirmed that the degradation product of the dye treated by simple MoCl5 and WO3/MoCl5 was different. Deep inspection of specific regions of NMR fields gave necessary information about the degradation product using WO3/MoCl5.

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Photodegradation of 2,4,6-trichlorophenol using natural hematite modified with chloride of zirconium oxide

Cited by 24 publications

References 57 publications

Photocatalytic Degradation of 2,4,6-Trichlorophenol by MgO–MgFe2O4 Derived from Layered Double Hydroxide Structures

Photocatalytic Degradation of 2,4,6-Trichlorophenol by MgO–MgFe2O4 Derived from Layered Double Hydroxide Structures

Effects of 2,4,6-Trichlorophenol on Clarias batrachus: a biomarkers approach

An External Energy Independent WO3/MoCl5 Nano-Sized Catalyst for the Superior Degradation of Crystal Violet and Rhodamine B Dye

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