Cobalt oxide functionalized ceramic membrane for 4-hydroxybenzoic acid degradation via peroxymonosulfate activation

Abstract

Membrane separation and sulfate radicals-based advanced oxidation processes (SR-AOPs) can be combined as an efficient technique for the elimination of organic pollutants. The immobilization of metal oxide catalysts on ceramic membranes can enrich the membrane separation technology with catalytic oxidation avoiding recovering suspended catalysts. Herein, nanostructured Co3O4 ceramic catalytic membranes with different Co loadings were fabricated via a simple ball-milling and calcination process. Uniform distribution of Co3O4 nanoparticles in the membrane provided sufficient active sites for catalytic oxidation of 4-hydroxybenzoic acid (HBA). Mechanistic studies were conducted to determine the reactive radicals and showed that both SO4•− and •OH were present in the catalytic process while SO4•− plays the dominant role. The anti-fouling performance of the composite Co@Al2O3 membranes was also evaluated, showing that a great flux recovery was achieved with the addition of PMS for the fouling caused by humic acid (HA).

Publication DOI: https://doi.org/10.1016/j.jhazmat.2023.130874
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
College of Engineering & Physical Sciences
Additional Information: Copyright © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/).
Uncontrolled Keywords: AOPs,Catalytic membrane,Sulfate radicals,Catalytic oxidation,Co(3)O(4)
Publication ISSN: 1873-3336
Last Modified: 16 May 2024 07:19
Date Deposited: 15 Mar 2023 09:49
Full Text Link:
Related URLs: https://www.sci ... 304389423001565 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2023-04-15
Published Online Date: 2023-01-25
Accepted Date: 2023-01-24
Authors: Hirani, Rajan Arjan Kalyan
Wu, Hong
Asif, Abdul Hannan
Rafique, Nasir
Shi, Lei
Zhang, Shu
Wu, Zhentao (ORCID Profile 0000-0002-4934-8046)
Zhang, Lai-Chang
Wang, Shaobin
Yin, Yu
Saunders, Martin
Sun, Hongqi

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