Reversible filtration redox of methylene blue in dimethylsulfoxide by manganese oxide loaded carbonaceous nanofibrous membrane through Fenton-like oxidation

Copyright © 2020 Elsevier Inc. All rights reserved..

The reversible redox of methylene blue in organic solvents was highly attractive, yet was rarely reported. In this study, we realized the continuous filtration redox of methylene blue (MB) in dimethylsulfoxide (DMSO) through Fenton-like oxidization by using MnO2 loaded carbonaceous nanofibrous membrane (cPAN-MnO2). The carbonaceous nanofibrous membrane (cPAN) was fabricated through electrospun of polyacrylonitrile and subsequent carbonization. The obtained cPAN nanofibrous membrane showed excellent stability in polar DMSO. MnO2 can be readily coated on cPAN nanofibers through an in situ redox reaction between cPAN and potassium permanganate. The fabricated cPAN-MnO2 membrane exhibited instantaneous reduction property towards MB in DMSO during a gravity-driven continuous filtration process. Interestingly, MB reduction was initiated by a typical Fenton-like oxidization, where hydroxyl radicals were firstly generated from hydrogen peroxide catalyzed by MnO2 in DMSO. Then hydroxyl radicals attacked DMSO to further produce methyl radicals, which resulted in the reduction of MB. In addition, MB reduction process in DMSO was reversible. Our study provides a novel strategy for continuous redox of MB in polar organic solvent and might give new ideas for MB applications.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:588

Enthalten in:

Journal of colloid and interface science - 588(2021) vom: 15. Apr., Seite 436-445

Sprache:

Englisch

Beteiligte Personen:

Wang, Yang [VerfasserIn]
Wang, Jianqiang [VerfasserIn]
Li, Guiliang [VerfasserIn]
Geng, Xiaolan [VerfasserIn]
Hu, Tuoping [VerfasserIn]
Liu, Fu [VerfasserIn]

Links:

Volltext

Themen:

Catalytic nanofibrous membrane
Dimethylsulfoxide
Fenton-like oxidization
Filtration
Journal Article
Methylene blue redox

Anmerkungen:

Date Completed 16.02.2021

Date Revised 16.02.2021

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.jcis.2020.12.106

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM319927954