催化作用
可重用性
气凝胶
浸出(土壤学)
膜
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
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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