Surface-active MnFeO@C cubes as enhanced peroxymonosulfate activators for efficient degradation of bisphenol A

被引：40

作者：

Ya Yang ^{[1
,2
]}

Li, Yulian ^{[1
,2
]}

Hong, Peidong ^{[1
,2
]}

Wu, Zijian ^{[1
]}

Chao Xie ^{[1
]}

Zhang, Kaisheng ^{[1
]}

Li Lianxiang ^{[3
]}

He, Junyong ^{[1
]}

Kong, Lingtao ^{[1
]}

Liu, Jinhuai ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Environm Mat & Pollut Control Lab, Hefei 230031, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

[3] Minist Water Resources, China Irrigat & Drainage Dev Ctr, Rural Drinking Water Safety Ctr, Beijing 100054, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2021年 / 538卷

基金：

中国博士后科学基金;

关键词：

Surface-active; MnFeO@C; PMS activation; BPA degradation; METAL-ORGANIC FRAMEWORK; PRUSSIAN BLUE ANALOGS; HETEROGENEOUS ACTIVATION; PHENOL DEGRADATION; MANGANESE OXIDES; REMOVAL; SULFATE; MN; FE; NI;

D O I：

10.1016/j.apsusc.2020.148008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Developing highly-effective catalysts through a facile method for activating peroxymonosulfate (PMS) to degrade recalcitrant pollutants is highly desirable. In this work, porous carbon-coated iron-manganese oxides (MnFeO@C) was facilely synthesized. The porous carbon film on the surface of MnFeO@C was beneficial to adsorption of bisphenol A (BPA) and flow of electrons. The catalytic degradation performance toward BPA was significantly improved with the increase of surface roughness and porosity of MnFeO@C after calcination. In particular, MnFeO@C derived at 300 degrees C (MnFeO@C-300) exhibited the highest degradation rate benefiting from the existence of Mn2O3. More than 95% BPA could be removed in 30 min by MnFeO@C-300/PMS system and remained efficient in a wide pH range from 3.0 to 10.0, especially in alkaline conditions. The intermediates of BPA degradation were identified and the degradation pathways involved hydroxyl oxidation and benzene ring opening were proposed based on GC-MS results. The removal rate of BPA can maintain more than 80% following five cycles. Thus, the as-prepared MnFeO@C-300 composites are available to serve as efficient and eco-friendly catalysts for advanced catalytic oxidation of recalcitrant pollutants.

引用

页数：11

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