Facile preparation of novel Fe-BTC@PAN nanofibrous aerogel membranes for highly efficient continuous flow degradation of organic dyes

催化作用 可重用性 气凝胶 浸出(土壤学) 降级(电信) 化学工程 亚甲蓝 材料科学 多孔性 过滤(数学) 金属有机骨架 静电纺丝 化学 纳米技术 有机化学 聚合物 复合材料 吸附 计算机科学 工程类 电信 生物化学 数学 软件 环境科学 光催化 土壤科学 土壤水分 程序设计语言 统计
作者
Guojun Jiang,Yuxin Jia,Jia-Jun Wang,Yutao Sun,Yicheng Zhou,Yuhao Ruan,Yuhua Xia,Tianhao Xu,Sheng Xie,Sai Zhang,Xiangyu Ye
出处
期刊:Separation and Purification Technology [Elsevier]
卷期号:300: 121753-121753 被引量:13
标识
DOI:10.1016/j.seppur.2022.121753
摘要

Catalysts synthesized by immobilization of iron-based metal–organic frameworks (MOFs) on nanofibrous aerogel membranes (NFAMs) have great potential for practical applications in treatment of organic wastewaters. In this work, an ultralight [email protected] (PAN) NFAM with three-dimensional (3D) hierarchical porous structure was prepared by a green and facile in-situ growth strategy at room temperature. It was used as a catalytic membrane in a filtration device for testing the degradation of methylene blue (MB). The comprehensive characterization of the [email protected] NFAM confirmed the in-situ growth of Fe-BTC on NFAM. Combining the advantages of both MOFs and NFAMs, the as-obtained [email protected] NFAM, as a heterogeneous Fenton-like catalyst, exhibited excellent catalytic performance towards degradation of methylene blue (over 98.3% of MB could be removed within 120 min with high reaction rate constant of 0.0284 min−1). The effects of H2O2 concentration, initial pH, temperature, and MB concentration on the catalytic performance were investigated. Moreover, the removal efficiency remained up to 90% over multiple cycles with negligible iron leaching (less than0.5 mg/L), which indicated catalytic stability with good reusability. Furthermore, the plausible reaction mechanism was proposed. Hence, this study provides promising insights into the rational design of high-performance 3D MOF-based Fenton-like catalyst for treatment of organic wastewaters.
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