Photodegradation of carbendazim sensitized by aromatic ketones

Jornet, Dolors; Castillo, M.A.; Sabater, Ma Consuelo; Tormos, Rosa; Miranda, Miguel A.

doi:10.1016/j.jphotochem.2013.02.004

Cited by 13 publications

(4 citation statements)

References 51 publications

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“…Since Czm is identified as a pollutant of water resources where it can accumulate, it is important to study the processes that lead to its detection [ 7 , 8 ], degradation [ 9 ] and removal. Currently, sorption [ 10 ], radiolytic [ 3 , 11 ] and catalytic degradation [ 12 ], oxidation and ozonation [ 13 , 14 ], membrane distillation [ 15 ], as well as a variety of microbiological methods [ 16 ] are successfully used to remove Czm from aqueous media.…”

Section: Introductionmentioning

confidence: 99%

A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim

et al. 2022

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The extremely high levels of water pollution caused by various industrial activities represent one of the most important environmental problems. Efficient techniques and advanced materials have been extensively developed for the removal of highly toxic organic pollutants, including pesticides. This study investigated the photocatalytic degradation of the fungicide carbendazim (Czm) using composite track-etched membranes (TeMs) in an aqueous solution. Copper(I) oxide (Cu2O) and zinc oxide (ZnO) microtubes (MTs) were prepared using an electroless template deposition technique in porous poly(ethylene terephthalate) (PET) TeMs with nanochannels with a density of 4 × 107 pores/cm−2 and diameter of 385 ± 9 nm to yield Cu2O@PET and ZnO@PET composite membranes, respectively. A mixed Cu2O/ZnO@PET composite was prepared via a two-step deposition process, containing ZnO (87%) and CuZ (13%) as crystalline phases. The structure and composition of all composite membranes were elucidated using scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) techniques. Under UV–visible light irradiation, the Cu2O/ZnO@PET composite displayed enhanced photocatalytic activity, reaching 98% Czm degradation, higher than Cu2O@PET and ZnO@PET composites. The maximum Czm degradation efficiency from aqueous solution was obtained at an optimal pH of 6 and contact time of 140 min. The effects of various parameters such as temperature, catalyst dosage and sample exposure time on the photocatalytic degradation process were studied. The degradation reaction of Czm was found to follow the Langmuir–Hinshelwood mechanism and a pseudo-first order kinetic model. The degradation kinetics of Czm accelerated with increasing temperature, and the activation energy (Ea) levels were calculated as 11.9 kJ/mol, 14.22 kJ/mol and 15.82 kJ/mol for Cu2O/ZnO@PET, ZnO@PET and Cu2O@PET composite membranes, respectively. The reusability of the Cu2O/ZnO@PET catalyst was also investigated at different temperatures for 10 consecutive runs, without any activation or regeneration processes. The Cu2O/ZnO@PET composite exhibited degradation efficiency levels of over 50% at 14 °C and over 30% at 52 °C after 5 consecutive uses.

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Section: Introductionmentioning

confidence: 99%

A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim

et al. 2022

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“…However, heterogeneous photocatalysis is a more suitable technique for the environmental remediation because it is easy, green, and inexpensive. Heterogeneous photocatalysis converts hazardous organic pollutants into nontoxic compounds. − Therefore, invention of a unique and well-defined nanostructured material for the determination and degradation of CBZ is crucial to researchers.…”

Section: Introductionmentioning

confidence: 99%

Structural Insights on 2D Gadolinium Tungstate Nanoflake: A Promising Electrocatalyst for Sensor and Photocatalyst for the Degradation of Postharvest Fungicide (Carbendazim)

Sundaresan

Kumar

Chen

et al. 2019

ACS Appl. Mater. Interfaces

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Gadolinium tungstate (Gd 2 (WO 4 ) 3 ) has acquired much attention owing to its exclusive transport properties and excellent thermal and chemical stability. In this work, we demonstrate that two-dimensional (2D) gadolinium tungstate nanoflakes (GW Nfs) are synthesized by a coprecipitation method and represent novel architectures for efficient catalysis, which could be used in electrochemical sensing and photocatalytic degradation of the postharvest fungicide carbendazim (CBZ). The physicochemical properties of GW Nfs were studied by using XRD, Raman, TEM, EDX, and XPS, which show the formation of GW as a nanoflake-like structure with a well crystallized nature. The as-prepared GW Nfs revealed an admirable electrochemical response for CBZ detection with an LOD of 0.005 μM, a wide-ranging linear response of 0.02 to 40 μM, and a notable sensitivity of 0.39 μA μM −1 cm −2 . Furthermore, the GW-Nf-modified electrode has a good recovery for CBZ in the study of real samples such as rice and soil washed water samples. Moreover, GW Nfs have a promising photocatalytic activity for CBZ degradation. The GW Nfs could degrade CBZ at greater than 98% efficiency and mineralize above 74% of the CBZ molecules in the presence of visible light irradiation with superior stability even after many cycles. Subsequently, the electrochemical and photocatalytic mechanisms were provided in detail.

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“…Mixed transition metal oxides have been attracted superior interest in numerous fundamental and technological applications when compared to single metal oxides [5]. Among the transition metal oxides, nickel oxides (NiO) and tungsten trioxide (WO 3 ) have been widely in energy and environmental applications owing to their good physicochemical nature [6].…”

Section: Introductionmentioning

confidence: 99%

3D Sphere-like Nickel Tungstate Catalyst for Destroying of Organophosphate Pesticide Methyl Parathion

Nagarajan¹,

Kumar²,

Sivaganesh³

et al. 2019

IJEAT

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Recently, the appearance of pesticide residues into the environment poses serious risks to the living organisms. In this view, we explored a novel and superior photocatalyst based on nanostructured sphere-like nickel tungstate (NiWO4 NSs) for the degradation of organophosphate pesticide methyl parathion (MP) under visible light irradiation, for the first time. The NiWO4 NSs were tailored through simple precipitation technique and confirmed by several spectroscopic techniques. Fascinatingly, the NiWO4 NSs portrayed superior photodegradation performances towards MP degradation with superior stability.

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Photodegradation of carbendazim sensitized by aromatic ketones

Cited by 13 publications

References 51 publications

A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim

A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim

Structural Insights on 2D Gadolinium Tungstate Nanoflake: A Promising Electrocatalyst for Sensor and Photocatalyst for the Degradation of Postharvest Fungicide (Carbendazim)

3D Sphere-like Nickel Tungstate Catalyst for Destroying of Organophosphate Pesticide Methyl Parathion

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