Heterogeneous activation of peroxymonosulfate by hierarchically porous cobalt/iron bimetallic oxide nanosheets for degradation of phenol solutions

Abstract

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. © 2020 Elsevier Ltd

Document Type

Journal Article

Date of Publication

1-1-2020

Publication Title

Chemosphere

Publisher

Elsevier Ltd

School

School of Engineering

RAS ID

32889

Comments

Li, L., Wu, H., Chen, H., Zhang, J., Xu, X., Wang, S., ... & Sun, H. (2020). Heterogeneous activation of peroxymonosulfate by hierarchically porous cobalt/iron bimetallic oxide nanosheets for degradation of phenol solutions. Chemosphere, 256, Article 127160. https://doi.org/10.1016/j.chemosphere.2020.127160

Copyright

subscription content

Share

 
COinS
 

Link to publisher version (DOI)

10.1016/j.chemosphere.2020.127160