Photocatalytic degradation of neonicotinoid insecticides using sulfate-doped Ag3PO4 with enhanced visible light activity

Lee, Youn-Jun; Kang, Jin‐Kyu; Park, Seong‐Jik; Lee, Changgu; Moon, Joon‐Kwan; Alvarez, Pedro J. J.

doi:10.1016/j.cej.2020.126183

Cited by 78 publications

(14 citation statements)

References 51 publications

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“…The highly persistent nature of neonicotinoids increases the probability for contamination on the soil surface, groundwater, and air, even many years after application. ,− A previous study reported that only 5% of active neonicotinoids was applied over crop/plants and the remaining 95% disperses into the environment . Among all the techniques, ,,− abiotic transformation of insecticides has been found as the major degradation process, which is a more sustainable technique. ,, However, in most of the cases the products formed from the abiotic process were more malignant than the parent insecticides and also responsible for the formation of secondary organic aerosols in the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Mechanism, Kinetics, and Ecotoxicity Assessment of ·OH-Initiated Oxidation Reactions of Sulfoxaflor

2021

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The •OH-initiated reaction mechanism and kinetics of sulfoxaflor were investigated by using electronic structure calculations. The possible hydrogen atom and cyano group abstraction reaction pathways were studied, and the calculated thermochemical parameters show that the hydrogen atom abstraction from the C7 carbon atom is the more favorable reaction pathway. The subsequent reactions for the favorable intermediate (I4) with other atmospheric reactive species, such as O 2 , H 2 O, HO 2 •, and NO x • (x = 1, 2), were studied in detail. The products identified from the subsequent reactions could contribute to secondary organic aerosol (SOA) formation in the atmosphere. The intermediates and products formed from the initial and subsequent reactions are equally as toxic as the parent sulfoxaflor. At 298 K, the rate constant calculated for the formation of the favorable intermediate I4 is 2.54 × 10 −12 cm 3 molecule −1 s −1 , which shows that the lifetime of sulfoxaflor is 54 h. The excited-state calculation performed through time-dependent density functional theory shows that the photolysis of the title molecule is unlikely in the atmosphere. The global warming potentials (GWPs) for different time horizons, photochemical ozone creation potential (POCP), and ecotoxicity analysis were also studied for the insecticide sulfoxaflor.

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Section: Introductionmentioning

confidence: 99%

Mechanism, Kinetics, and Ecotoxicity Assessment of ·OH-Initiated Oxidation Reactions of Sulfoxaflor

2021

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“…[2a, 22] Moreover, the electrochemical impedance spectroscopy (EIS) shows a difference in high-frequency semicircle between O-ZnIn 2 S 4 /ZnO-T heterojunction and monomers, indicating a lower charge-transfer resistance in composite nanosurfaces (Figure 4c). [23] On the other hand, all selfdesigned photocatalysts show reproducible photocurrent signals in each illumination period (Figure 4d). Mainly due to the more efficient separation and transfer of electrons, O-ZnIn 2 S 4 /ZnO-T exhibits a significantly enhanced photoelectric response compared to single-component catalysts, revealing the excellent separation efficiency of carriers in the tubular heterostructures.…”

Section: Zuschriftenmentioning

confidence: 91%

Hierarchical Hollow Zinc Oxide Nanocomposites Derived from Morphology‐Tunable Coordination Polymers for Enhanced Solar Hydrogen Production

Zhu

et al. 2022

Angewandte Chemie

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Infinite coordination‐polymer particles (CPPs) are promising materials for solar energy conversion with high efficiency. However, the range of organic ligands that may be used to create CPPs is limited, as are strategies for modification, thereby hindering the applications of such material. In this paper, competitive evolution–morphological and structural change from Zn‐based crystallites to amorphous particles is described. Controlled contribution of organic linkers selectively derived six Zn‐CPPs with multivariate characters. Based on the diversity of these substructures, hollow zinc oxide particles were initially formed by self‐pyrolysis of CPPs and effectively modified by ultrathin doped nanosheets. The obtained double‐sided heterojunctions offer fully‐covered active sites, bringing together efficient light‐excited charge‐transfer nanochannels, which exhibit an excellent solar H2‐releasing activity (e.g., 4512.5 μmol h−1 g−1) and stable cyclability.

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“…Various methods can be applied for the degradation of IMI from aqueous solutions such as microfiltration membrane [11], biological degradation [12], adsorption [13,14], and advanced oxidation processes (AOPs) [15,16]. Among the AOP methods, photocatalytic activity has been used effectively in wastewater treatment for the removal of organic pollutants due to its simplicity, high activity, low cost, and ability to reduce CO 2 [17,18]. Graphitic carbon nitride (g-C 3 N 4 ) has attracted significant attention as a visible photocatalyst for water purification due to its stability, high surface area, eco-friendliness, and facile synthesis [19,20].…”

Section: Introductionmentioning

confidence: 99%

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

et al. 2022

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In this work, g-C3N4/TiO2 composites were fabricated through a hydrothermal method for the efficient photocatalytic degradation of imidacloprid (IMI) pesticide. The composites were fabricated at varying loading of sonochemically exfoliated g-C3N4 (denoted as CNS). Complementary characterization results indicate that the heterojunction between the CNS and TiO2 formed. Among the composites, the 0.5CNS/TiO2 material gave the highest photocatalytic activity (93% IMI removal efficiency) under UV-Vis light irradiation, which was 2.2 times over the pristine g-C3N4. The high photocatalytic activity of the g-C3N4/TiO2 composites could be ascribed to the band gap energy reduction and suppression of photo-induced charge carrier recombination on both TiO2 and CNS surfaces. In addition, it was found that the active species involved in the photodegradation process are OH and holes, and a possible mechanism was proposed. The g-C3N4/TiO2 photocatalysts exhibited stable photocatalytic performance after regeneration, which shows that g-C3N4/TiO2 is a promising material for the photodegradation of imidacloprid pesticide in wastewater.

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Photocatalytic degradation of neonicotinoid insecticides using sulfate-doped Ag3PO4 with enhanced visible light activity

Cited by 78 publications

References 51 publications

Mechanism, Kinetics, and Ecotoxicity Assessment of ·OH-Initiated Oxidation Reactions of Sulfoxaflor

Mechanism, Kinetics, and Ecotoxicity Assessment of ·OH-Initiated Oxidation Reactions of Sulfoxaflor

Hierarchical Hollow Zinc Oxide Nanocomposites Derived from Morphology‐Tunable Coordination Polymers for Enhanced Solar Hydrogen Production

Identification of Active Species in Photodegradation of Aqueous Imidacloprid over g-C3N4/TiO2 Nanocomposites

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