Removal efficiency of dibenzofuran using CuZn-zeolitic imidazole frameworks as a catalyst and adsorbent

IF 3.8 4区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Green Processing and Synthesis Pub Date : 2023-01-01 DOI:10.1515/gps-2022-8112

Thanh Q. C. Nguyen, Huy B. Tran, N. Nguyen, Nhut Nguyen, Giao H. Dang

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引用次数: 2

Abstract

Abstract Dioxins/furans are classified as highly toxic chemicals that seriously affect human health. To remove dioxin residues from contaminated water, CuZn-ZIFs, a material from bimetallic zeolitic imidazolate frameworks (ZIFs) has been synthesized and explored its efficacy treatment with dibenzofuran (DBF). The pristine structure of CuZn-ZIFs was confirmed using powder X-ray diffraction, Fourier-transform infrared, thermogravimetric analysis, energy-dispersive X-ray, Brunauer–Emmett–Teller, and scanning electron microscopy. CuZn-ZIFs exhibited its role as a heterogeneous catalyst promoting H2O2 oxidation and as an adsorbent in DBF treatment. Herein, at room temperature, more than 86% of DBF adsorbed and 90% of DBF degraded in the presence of H2O2 with 10 mg catalyst dosage, 30 ppm of DBF within 40 and 60 min, respectively. Remarkably, the CuZn-ZIFs’ reusability of each process showed a high efficacy removal with over 80% after five cycles. Therefore, CuZn-ZIFs synthesized could be a prospective candidate for the indirect or direct degradation of dioxins/DBF derivatives from contaminated water. Graphical abstract

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用cuzn -沸石咪唑骨架作为催化剂和吸附剂去除二苯并呋喃的效率

摘要二恶英/呋喃被列为严重影响人类健康的剧毒化学品。为了去除污水中的二恶英残留，合成了一种双金属沸石-咪唑盐骨架材料CuZn-ZIFs，并对其与二苯并呋喃（DBF）的处理效果进行了探讨。使用粉末X射线衍射、傅立叶变换红外、热重分析、能量色散X射线、Brunauer–Emmett–Teller和扫描电子显微镜证实了CuZn-ZIFs的原始结构。CuZn-ZIFs在DBF处理中表现出促进H2O2氧化的多相催化剂和吸附剂的作用。在室温下，在H2O2存在下，超过86%的DBF被吸附，90%的DBF降解 mg催化剂用量，30 DBF在40和60之间的ppm min。值得注意的是，CuZn-ZIFs的每种工艺的可重复使用性在五个循环后都显示出超过80%的高效去除率。因此，合成的CuZn-ZIFs可能是从污染水中间接或直接降解二恶英/DBF衍生物的潜在候选者。图形摘要

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来源期刊

Green Processing and Synthesis CHEMISTRY, MULTIDISCIPLINARY-ENGINEERING, CHEMICAL

CiteScore

6.70

自引率

9.30%

发文量

审稿时长

7 weeks

期刊介绍： Green Processing and Synthesis is a bimonthly, peer-reviewed journal that provides up-to-date research both on fundamental as well as applied aspects of innovative green process development and chemical synthesis, giving an appropriate share to industrial views. The contributions are cutting edge, high-impact, authoritative, and provide both pros and cons of potential technologies. Green Processing and Synthesis provides a platform for scientists and engineers, especially chemists and chemical engineers, but is also open for interdisciplinary research from other areas such as physics, materials science, or catalysis.