Kinetics and the mechanism of the photocatalytic degradation of mesotrione in aqueous suspension and toxicity of its degradation mixtures

Šojić, Daniela V.; Orčić, Dejan; Četojević-Simin, Dragana; Despotović, Vesna; Abramović, Biljana F.

doi:10.1016/j.molcata.2014.04.033

Cited by 33 publications

(19 citation statements)

References 28 publications

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“…The photocatalytic degradation was realised in a previously described cell. 26 For the halogen lamp, the visible light intensity was 63.85 mW cm -2 and UV radiation intensity was 0.22 mW cm -2 . The radiation energy fluxes were measured using a Delta Ohm HD 2102.2 (Padova, Italy) radiometer, which was fitted with a LP 471 UV (spectral range 315-400 nm) and a LP 471 RAD (spectral range 400-1050 nm) sensor.…”

Section: Photodegradation Proceduresmentioning

confidence: 99%

Photodegradation of selected pesticides: Photocatalytic activity of bare and PANI-modified TiO2 under simulated solar irradiation

Lazarević

Despotovic

Sojic-Merkulov

et al. 2019

JSCS

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In this paper the efficiency of photocatalytic degradation of different pesticides was investigated using bare TiO 2 and TiO 2 nanoparticles modified with polyaniline under simulated solar irradiation. Sulcotrione showed the highest percentage degradation and further experiments were related to this herbicide. Mineralization and cytotoxicity of the starting compound and intermediate species formed during the decomposition in double distilled water (DDW), as well as the efficiency of removal from various environmental waters were studied. The contents of the most abundant ions present in the River Danube were simulated in DDW and their influence was evaluated. It was found that cytotoxicity was in all cases below 11 % and the efficiency of photocatalytic degradation in environmental waters was decreased compared with DDW. Furthermore, addition of different scavengers revealed that the main path of degradation is through holes, while the presence of H 2 O 2 decreased and KBrO 3 increased the efficiency of photocatalytic degradation compared with the system without the mentioned electron acceptors.

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Section: Photodegradation Proceduresmentioning

confidence: 99%

Photodegradation of selected pesticides: Photocatalytic activity of bare and PANI-modified TiO2 under simulated solar irradiation

Lazarević

Despotovic

Sojic-Merkulov

et al. 2019

JSCS

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“…The photocatalytic degradation was realised in a cell using high-pressure mercury and halogen lamps, the characteristics of which were previously described in detail. 7,8 The experiments were performed using 20 cm 3 of a 0.05 mmol dm -3 solution of mesotrione, as the active ingredient in Callisto ® , containing 40 mg of catalyst (except for the study of direct photolysis). Experimental procedure of the degradation of TiO 2 , i.e., ZnO, suspen-…”

Section: Photodegradation Proceduresmentioning

confidence: 99%

“…Both photocatalysts have proven to be efficient in the degradation of mesotrione in doubly distilled water (DDW). 7 REMOVAL OF MESOTRIONE FROM ENVIRONMENTAL WATERS 345 60 % HClO 4 from Kemika (Zagreb, Croatia); Na 2 SO 4 from MP Hemija (Belgrade, Serbia); 99.8 % acetonitrile (ACN) from Sigma-Aldrich and technical humic acid, was the product of Fluka. All solutions were made using DDW.…”

Section: Introductionmentioning

confidence: 99%

The effect of inorganic anions and organic matter on mesotrione (Callisto®) removal from environmental waters

Sojic-Merkulov

Lazarević

Despotovic

et al. 2017

JSCS

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The photocatalytic elimination of the herbicide mesotrione from the commercial formulation Callisto ® in environmental and synthetic waters by means of heterogeneous advanced oxidation processes was investigated. The activities of the commercial photocatalyst TiO 2 Degussa P25 (TiO 2) and ZnO in the degradation of mesotrione under UVA and simulated sunlight in doubly distilled, ground and in river water was compared. Environmental waters as the matrix significantly lowered the removal rate (by about 4 and 1.5 times for TiO 2 and ZnO, respectively) under UVA irradiation. Besides, the organic additives from Callisto ® also reduced the degradation rate of mesotrione. The effects of inorganic anions (Cl-, SO 4 2and HCO 3-) and humic acid (HA), which were identified as major species in ground and river water, was evaluated. It was found that Cl − (pH ≈4 and ≈8) and HCO 3-(pH ≈8) using TiO 2 mainly accelerated the degradation rate of mesotrione, while SO 4 2had the opposite effect at pH ≈4 and did not affect the degradation rate at pH ≈8. Furthermore, HA mainly did not significantly affect the degradation rate of mesotrione at pH ≈4 and ≈8. Moreover, almost all anions, and HA slightly inhibited the degradation rate of mesotrione in synthetic water using ZnO.

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“…15,16 For the removal of pharmaceutical molecules from water, scientists have developed forced degradation procedures based on advanced oxidation processes. 14,15,[17][18][19][20][21] These efforts are tedious and time consuming and there is constant need for rationalization and optimization of these procedures. In this regard, DFT calculations and molecular dynamics (MD) simulations have been readily employed, [22][23][24][25] since they are valuable for the prediction of the reactive properties of investigated molecules by relatively inexpensive computational experiments.…”

Section: Introductionmentioning

confidence: 99%

4-[(4-acetylphenyl)amino]-2-methylidene-4-oxobutanoic acid, a newly synthesized amide with hydrophilic and hydrophobic segments: Spectroscopic characterization and investigation of its reactive properties

Mary

Al‐Abdullah

Aljohar

et al. 2018

JSCS

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The FT-IR and FT-Raman spectra of 4-[(4-acetylphenyl)amino]-2-methylidene-4-oxobutanoic acid were recorded. The vibrational wave numbers were computed by DFT quantum chemical calculations and the vibrational assignments were realized using the potential energy distribution. The theoretically predicted geometrical parameters were in agreement with the XRD data. Determination and visualization of molecule sites prone to electrophilic attacks were performed by mapping the average local ionization energies (ALIE) to the electron density surface. Furthermore, determination of possible reactive centres of title molecule was realized by calculation of the Fukui functions. Intramolecular non-covalent interactions were also determined and visualized. In addition, prediction of molecule sites possibly prone to autoxidation was performed by calculation of the bond dissociation energies (BDE), while the stability of the title molecule in water was assessed by calculation of radial distribution functions (RDF) obtained after molecular dynamics (MD) simulations.

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Kinetics and the mechanism of the photocatalytic degradation of mesotrione in aqueous suspension and toxicity of its degradation mixtures

Cited by 33 publications

References 28 publications

Photodegradation of selected pesticides: Photocatalytic activity of bare and PANI-modified TiO2 under simulated solar irradiation

Photodegradation of selected pesticides: Photocatalytic activity of bare and PANI-modified TiO2 under simulated solar irradiation

The effect of inorganic anions and organic matter on mesotrione (Callisto®) removal from environmental waters

4-[(4-acetylphenyl)amino]-2-methylidene-4-oxobutanoic acid, a newly synthesized amide with hydrophilic and hydrophobic segments: Spectroscopic characterization and investigation of its reactive properties

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