催化作用
双金属片
化学
苯酚
浸出(土壤学)
钴
溴化物
氧化物
化学工程
无机化学
有机化学
环境科学
工程类
土壤科学
土壤水分
作者
Lei Li,Hong Wu,Haijun Chen,Jinqiang Zhang,Xinyuan Xu,Shuaijun Wang,Shaobin Wang,Hongqi Sun
出处
期刊:Chemosphere
[Elsevier]
日期:2020-10-01
卷期号:256: 127160-127160
被引量:43
标识
DOI:10.1016/j.chemosphere.2020.127160
摘要
Bimetallic oxide nanomaterials have received much attention owing to their competing performances in heterogeneous catalysis. Herein, hierarchically porous cobalt-iron oxide nanosheets were successfully prepared using NaBH4 as a reductant and high concentration cetyl trimethylammonium bromide (CTAB) as a surfactant. Characterization results showed that the CTAB would induce the form of a bilayer structure while NaBH4 would promote the generation of enriched oxygen vacancies. As a result, the as-prepared Co1Fe1-300 exhibited high activity for activating peroxymonosulfate and achieved 100% phenol degradation within 30 min. This excellent catalytic activity can be attributed to its hierarchically porous structure, more active sites and oxygen vacancies. Co leaching test indicated that the Co1Fe1-300 exhibited excellent catalytic stability. Mechanistic studies suggested that two main degradation pathways were involved during phenol oxidation process, in which SO4•- played a significant role. This work may offer a novel strategy for the synthesis of high activity catalysts and a promising system for the remediation of environmental pollutant.
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