Journal
CHEMOSPHERE
Volume 304, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.135286
Keywords
BWO@MIL-100(Fe); In-situ polymerization; Photodegradation; Pirimicarb
Categories
Funding
- Department of Science and Tech-nology, India [INT/HUN/P-17/2017]
- Hungarian Science and Research Foundation [2017-2.3.7-T ?, ET-IN-2017-00016]
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In this study, amine-functionalized and BWO@MIL-100(Fe) nanofillers were synthesized to construct nanofillers grafted PVDF membranes for the reduction and photodegradation of Pirimicarb. The grafted membranes showed higher hydrophilicity, pure water flux, and antifouling properties. The BWO@MIL-100(Fe) membrane exhibited higher permeate flux and excellent pirimicarb photodegradation.
Pirimicarb as a pesticide is used to control the aphids in the agriculture field; however, it affects the groundwater ecosystem by leaching through the soil profile. The post-synthetic amine and BWO modified MIL-100 (Fe) nanofillers were synthesized. The photocatalytic property of amine-functionalized and BWO@MIL-100(Fe) nanofillers was confirmed by the lesser bandgap energy than the unmodified MIL-100 (Fe) nanofiller. Herein, we constructed a nanofillers grafted PVDF membrane via in-situ polymerization technique for the pirimicarb reduction and photodegradation. Furthermore, the nanofiller's grafted membranes were characterized by FESEM, XRD, FTIR, and contact angle analysis. The carboxylic acid peak was observed on the FTIR which demonstrated the PAA grafted on the membrane surface and similar crystalline peaks evident that the nanofillers were grafted on the membrane surface. Furthermore, surface morphology studies have exhibited the dispersion of nanofillers and enhanced microvoids in the cross-section of the membrane. The decrease in the water contact angle of the membrane depicted the improved antifouling properties and surface energy. The nanofiller's grafted membranes have shown higher hydrophilicity correlated well with the enhanced pure water flux in the order M4 > M5 > M2 > M3 > M6 > M7 compared to the neat membrane (M1). In BWO@MIL-100(Fe) membrane has shown a higher permeate flux (25.99 L m(-2).h(-1)) than the neat PVDF membrane. The BWO@MIL-100(Fe) grafted PVDF membrane has also shown excellent pirimicarb photodegradation of 81% at pH 5. The proposed MIL-100 (Fe) and bismuth tungsten nanocomposite will pave the way for the different MOF-based photocatalytic materials for membrane-based pesticide degradation.
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