Magnetically separable BiZnO/Fe3O4 nanocomposites and their application for degradation of 2,4-dichlorophenoxyacetic acid pesticide

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Materials Today Sustainability Pub Date : 2024-08-22 DOI:10.1016/j.mtsust.2024.100962

Hamzeh Salehzadeh , Behzad Shahmoradi , Afshin Maleki , Bahram Nikkhoo , Behnam Rahimi , Mehran Rezaee , Ebrahim Mohammadi , Harikaranahalli Puttaiah Shivaraju , Guogang Ren , Kitirote Wantala , Hee-Jeong Choi , Mahdi Safari

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Abstract

This study aimed to increase the photocatalytic activity of ZnO-based magnetically modified nanocomposites to degrade 2,4-dichlorophenoxyacetic acid (2,4-D). The physicochemical properties of the photocatalysts were thoroughly investigated, and the effects of various operational parameters were analyzed. The photodegradation efficiency of the pesticide increased with increasing reaction time. Among the synthesized nanocomposites, 1.5 wt% BiZnO and 1.0 wt% BiZnO/Fe₃O₄ had the highest photodegradation efficiencies. The photodegradation efficiency using 1.5 wt% BiZnO and 1.0 wt% BiZnO/Fe₃O₄ nanocomposites were 96 and 94%, respectively. Therefore, it can be concluded that 1.5 wt% BiZnO and 1.0 wt% BiZnO/Fe₃O₄ samples can effectively degrade the model pollutant, 2,4-D, under sunlight illumination. Additionally, 1.0 wt% BiZnO/Fe₃O₄ was easily separated by a magnet showing the reusability of the prepared photocatalyst. The mechanistic pathways of 2,4-D are also proposed in this work. The results of these insights offer a holistic understanding of this photocatalyst's role in the field of green and efficient pesticides' photocatalytic degradation.

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磁性可分离 BiZnO/Fe3O4 纳米复合材料及其在降解 2,4 二氯苯氧乙酸农药中的应用

本研究旨在提高氧化锌基磁修饰纳米复合材料降解 2,4-D 的光催化活性。对光催化剂的理化性质进行了深入研究，并分析了各种操作参数的影响。农药的光降解效率随着反应时间的延长而提高。在合成的纳米复合材料中，1.5 wt% BiZnO 和 1.0 wt% BiZnO/Fe3O4 的光降解效率最高。使用 1.5 wt% BiZnO 和 1.0 wt% BiZnO/Fe3O4 纳米复合材料的光降解效率分别为 96% 和 94%。因此，可以得出结论：在阳光照射下，1.5 wt% BiZnO 和 1.0 wt% BiZnO/Fe3O4 样品可以有效降解模型污染物 2,4-D。此外，1.0 wt% BiZnO/Fe3O4 很容易用磁铁分离，这表明所制备的光催化剂可以重复使用。这项研究还提出了 2,4-D 的机理途径。这些深入研究的结果为全面了解这种光催化剂在绿色高效农药光催化降解领域的作用提供了依据。

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来源期刊

Materials Today Sustainability Multiple-

CiteScore

5.80

自引率

6.40%

发文量

174

审稿时长

32 days

期刊介绍： Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.