Photodegradation of carbendazim sensitized by aromatic ketones

Abstract

it was assigned to the triplet excited state ( 3 1*) on the basis of energy transfer to oxygen and β-carotene. The photodegradation of 1 was achieved using XA and AQ as electron acceptors in a solar-simulator, in aerated aqueous medium; the reaction was faster with XA. Formation of a new photoproduct was initially observed; its structure was assigned as carbendazim N-C5 dimer (2). A balance of the total organic carbon (TOC) after prolonged irradiation indicated that mineralization does not occur to a significant extent, pointing to oxidative fragmentation of 1 and 2 to give a variety of low molecular weight products. To check whether the observed photodegradation of 1 results in a decreased toxicity, biological assays were performed using an established model based on the inhibition of mobility of Daphnia magna. The results demonstrate that photodegradation leads to in a diminished toxicity, indicating that the photoproducts are less toxic than the parent compound.

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

“…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.…”

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

“…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.…”

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

“…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].…”