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ORIGINAL RESEARCH article
Front. Chem.
Sec. Catalytic Reactions and Chemistry
Volume 13 - 2025 |
doi: 10.3389/fchem.2025.1552002
This article is part of the Research Topic Catalysis for Environmental Applications: Addressing Global Challenges View all articles
Heterogeneous Fenton-like CuO-CoO x /SBA-15 Catalyst for Organic Pollutant Degradation: Synthesis, Performance, and Mechanism
Provisionally accepted- 1 School of Material and Environmental Engineering, Shenzhen Polytechnic University, shenzhen, China
- 2 School of Municipal and Environmental Engineering,Shenyang Jianzhu University, Shenyang, Shengyang, China
- 3 School of Materials and Environmental Engineering, Shenzhen Polytechnic, Shenzhen, China
In this study, CuO-CoOx/SBA-15 catalysts were successfully synthesized via ultrasonic impregnation, and their performance in degrading nitrobenzene within a Fenton-like system was investigated. The catalyst materials were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectrometry (ICP-MS), scanning electron microscopy (SEM), transmission electron microscope(TEM) and energy-dispersive X-ray spectroscopy (EDS). The CuO-CoOx/SBA-15 catalysts featured well-distributed CuO-CoOx nanoparticles within the mesoporous SBA-15 support. Compared to CuO/SBA-15 and Co3O4/SBA-15 catalysts with similar microstructures, the CuO-CoOx/SBA-15 catalysts exhibited Cu-Co dual active centers and a higher abundance of redox-active sites. During catalytic degradation, H2O2 was continuously activated on the catalyst surface through efficient Cu+/Cu2+ and Co2+/Co3+ redox cycles. The experimental conditions (initial pH, catalyst dosage, and H2O2 dosage) were optimized, resulting in 99% nitrobenzene removal over a wide pH range (3.0–9.0). The primary mechanisms for the oxidation and subsequent removal of nitrobenzene in the CuO-CoOx/SBA-15-H2O2 system were identified as reactions with hydroxyl radicals (·OH).
Keywords: CuO-CoOx/SBA-15, Fenton-like system, Bimetallic oxides, synergistic effect, Organic pollutant degradation
Received: 27 Dec 2024; Accepted: 31 Jan 2025.
Copyright: © 2025 Li, Wei, Liu, Guan and Jiang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Yifei Wei, School of Municipal and Environmental Engineering,Shenyang Jianzhu University, Shenyang, Shengyang, China
Qiang Liu, School of Municipal and Environmental Engineering,Shenyang Jianzhu University, Shenyang, Shengyang, China
Huanhuan Guan, School of Municipal and Environmental Engineering,Shenyang Jianzhu University, Shenyang, Shengyang, China
Chengchun Jiang, School of Materials and Environmental Engineering, Shenzhen Polytechnic, Shenzhen, China
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