过氧二硫酸盐
催化作用
双金属片
氧化物
石墨烯
激进的
无机化学
纳米复合材料
协同催化
金属有机骨架
化学
浸出(土壤学)
硫酸盐
材料科学
化学工程
纳米颗粒
纳米技术
有机化学
吸附
工程类
环境科学
土壤科学
土壤水分
作者
Minjun Liu,Ying Liu,Xinru Liu,Chengcheng Chu,Ducheng Yao,Shun Mao
标识
DOI:10.1016/j.seppur.2022.121967
摘要
Metal organic framework (MOF)-derived materials normally have three-dimensional (3D) structure, while little attention has been paid to two-dimensional (2D) MOF-derived materials with high catalytic activity. Nevertheless, the underlying agglomeration and metal leaching issues of 2D MOF-derived catalysts hinder their real applications. In this work, we report a bimetallic nanocomposite (Ni-Fe-C-600-acid/GO) derived from 2D Ni-Fe-MOF and graphene oxide (GO) network. Employing Ni(0) and Fe3O4 as active site, the Ni-Fe-C-600-acid/GO shows high efficiency in peroxydisulfate (PDS) activation for the removal of p-chloroaniline (PCA), and the catalyst/PCA dosage ratio (0.8) is substantially lower than those of the previous studies (3.9–156.9). The prepared catalysts demonstrate high catalytic activity over a wide pH range of 3–9 and maintain high efficiency after five cycles with good tolerance to inorganic anions. The singlet oxygen is identified as the predominant active species and relatively weak contributions from sulfate free radicals and hydroxyl radicals are confirmed. This catalysis system presents new insights in 2D MOF-derived catalysts in advanced oxidation processes.
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