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An efficient photocatalytic degradation of Quinalphos pesticide under visible light using zinc oxide/magnesium oxide nanocomposites as a novel photocatalyst

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Title An efficient photocatalytic degradation of Quinalphos pesticide under visible light using zinc oxide/magnesium oxide nanocomposites as a novel photocatalyst
 
Creator Sibmah, S
Kirupavasam, E K
 
Subject Pesticide
nanocomposite
contaminants
Quinalphos
photocatalysis
visible light
 
Description 901-908
About one million tons of pesticide effluents were discharged into natural streams and water bodies from local
industries and agricultural fields. In view of growing environmental issues there is a requirement for the termination of
pesticides and its residues from local and commercial water streams. Photocatalytic degradation method is regarded as a
convenient method for the treatment of organic contaminants because of its low cost, lack of secondary pollutants and ecofriendly
character. In this study, an enhanced and visible light effective ZnO/MgO nanocomposite photocatalyst has been
synthesized by a wet chemical method using zinc acetate dihydrate and magnesium chloride as precursor. The prepared
sample has been examined to diagnose its structural, morphological, optical and fluorescence properties using XRD, UVVis,
SEM, EDX, FT-IR and fluorescence spectral analysis. The organophosphorus pesticide, Quinalphos, has a wide
application worldwide, particularly to control the population of pests. Due to its toxic character, it is necessary to eradicate
Quinalphos and its residues from the environment. The synthesised ZnO/MgO nanocomposite is analysed to degrade
Quinalphos pesticide under direct sunlight at neutral pH. The photocatalytic performance of ZnO/MgO nanocomposite is
examined by loading 4 mg/L of the catalyst in 20 ppm of the Quinalphos solution to achieve 98% degradation with in forty
minutes. Moreover, this nanocomposite could be separated and utilised up to five cycles with no change in its activity.
 
Date 2022-08-16T08:30:03Z
2022-08-16T08:30:03Z
2022-08
 
Type Article
 
Identifier 2583-1321 (Online); 0019-5103 (Print)
http://nopr.niscpr.res.in/handle/123456789/60293
https://doi.org/10.56042/ijc.v61i8.59489
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJC Vol.61(08) [AUG 2022]