New insights of g-C3N4/Bi2WO6 nanocomposite surface assembled on PVDF hybrid membrane for the treatment of pirimicarb pesticides

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-01-01 DOI:10.1016/j.jtice.2023.105136

S.A. GokulaKrishnan , G. Arthanareeswaran , Shiva V Prasad , Wei-Mon Yan , Thangavel Sangeetha , J. Sashank Raman , V. Ponnusami

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Abstract

Background

Pirimicarb, a commercially used insecticide, contains carbamate, which affects the nervous system of insects and living organisms, thus inhibiting their growth and increasing the production of crops. However, it has an impact on the ecosystem of groundwater by permeating the soil profile.

Methods

The g-C₃N_4, Bi₂WO₆ & g-C₃N₄/Bi₂WO₆ nanocomposites were synthesized by hydrothermal method and grafted on the PVDF membranes via in-situ polymerization. The pirimicarb wastewater of different pH 5,7 & 9 was synthetically prepared, and the performance of the membrane was tested to study the reduction and photodegradation of as-prepared pirimicarb wastewater.

Significant

The surface energy had increased from 88.65 to 145.1 mJ/m², g-C₃N₄/ Bi₂WO₆ nanocomposites on the PVDF membranes. The water contact angle of the membrane ranges from 57.9° to 37.7°, indicating that the membranes have higher hydrophilic characteristics. The water permanence is in the decreasing order of M1 (PAA/PVDF)> M6 (0.5wt% g-C₃N₄/Bi₂WO₆/PAA/PVDF)> M3 (1wt% Bi₂WO₆/PAA/PVDF)> M7 (1wt% g-C₃N₄/Bi₂WO₆/PAA/PVDF)> M4 (0.5wt% g-C₃N₄/PAA/PVDF)> M2 (0.5wt% Bi₂WO₆/PAA/PVDF)> M5 (1wt% g-C₃N₄/PAA/PVDF)> Neat (PVDF). The photodegradation studies stated that upon adding nanocomposites such as g-C₃N₄/Bi₂WO₆, the membranes undergo degradation of 80% at pH 5, which is higher than the PVDF/PAA (M1) membrane.

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PVDF杂化膜上组装g-C3N4/Bi2WO6纳米复合表面处理吡虫威农药的新见解

吡立威是一种商业使用的杀虫剂，含有氨基甲酸酯，它会影响昆虫和生物的神经系统，从而抑制它们的生长，增加作物的产量。然而，它通过渗透土壤剖面对地下水生态系统产生影响。采用水热法合成了g-C3N4、Bi2WO6和g-C3N4/Bi2WO6纳米复合材料，并通过原位聚合将其接枝到PVDF膜上。合成了不同pH值为5、7、9的吡呋虫威废水，并对膜的性能进行了测试，研究了制备的吡呋虫威废水的还原和光降解情况。在PVDF膜上，g-C3N4/ Bi2WO6纳米复合材料的表面能从88.65提高到145.1 mJ/m2。膜的水接触角为57.9°~ 37.7°，表明膜具有较高的亲水性。水持久性依次为M1 (PAA/PVDF)> M6 (0.5wt% g-C3N4/Bi2WO6/PAA/PVDF)> M3 (1wt% Bi2WO6/PAA/PVDF)> M7 (1wt% g-C3N4/Bi2WO6/PAA/PVDF)> M4 (0.5wt% g-C3N4/PAA/PVDF)> M2 (0.5wt% g-C3N4/PAA/PVDF)> M5 (1wt% g-C3N4/PAA/PVDF)> Neat (PVDF)。光降解研究表明，加入g-C3N4/Bi2WO6等纳米复合材料后，膜在pH 5下的降解率为80%，高于PVDF/PAA (M1)膜。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.