Magnetic nanoreactor Fe3O4@HNTs as heterogeneous Fenton-like catalyst for acid fuchsin degradation: Efficiency, kinetics and mechanism

Dai, Li-Yuan; Li, Bo; Xu, Huan-Yan; Wang, Wei-Song; Zhang, Siqun; Xu, Yan; Qi, Shuyan; He, Xuan; Jin, Lei

doi:10.1016/j.jpcs.2023.111445

Cited by 18 publications

(2 citation statements)

References 65 publications

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“…In recent years, many researchers have focused their attention on highly efficient advanced oxidation processes (AOPs) that generate reactive oxygen species (ROS). 3,4 AOPs based on the activation of peroxymonosulfate (PMS) can produce a variety of reactive oxygen species, which can oxidize most persistent organic pollutants and cause their rapid degradation. 5,6 Its asymmetric structure, high redox potential, long lifetime, and broad pH adaptability are considered more advantageous.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Consequently, it is imperative to eliminate organic dye contaminants before discharging wastewater. In recent years, many researchers have focused their attention on highly efficient advanced oxidation processes (AOPs) that generate reactive oxygen species (ROS). , AOPs based on the activation of peroxymonosulfate (PMS) can produce a variety of reactive oxygen species, which can oxidize most persistent organic pollutants and cause their rapid degradation. , Its asymmetric structure, high redox potential, long lifetime, and broad pH adaptability are considered more advantageous. , Usually, certain supplementary conditions would help activate PMS, including heat treatment, ultrasound, ultraviolet irradiation, microwave irradiation, etc. However, these methods often necessitate substantial external energy input, which would be difficult to achieve in some applications.…”

Section: Introductionmentioning

confidence: 99%

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Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Yang,

Hu,

Rao

et al. 2024

Langmuir

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Metal oxides can activate peroxymonosulfate (PMS) for the catalytic degradation of organic dyes. However, achieving high catalytic efficiency, structural stability, ease of recovery, and recyclability remains challenging for both research and practical applications. To address these requirements, a bimetallic oxide, CuMnO 2 , was synthesized using a simple hydrothermal approach and was encapsulated to create hydrogel beads, CS-Ca@PEI/CuMnO 2 . Subsequently, CS-Ca@PEI/CuMnO 2 was used to activate PMS and establish a solid−liquid heterogeneous oxidation system (CS-Ca@PEI/CuMnO 2 /PMS) for the degradation of Congo red (CR). The effects of various parameters such as different systems, catalyst dosages, initial pH values, PMS concentrations, temperatures, and anion types on the catalytic degradation properties of CS-Ca@PEI/CuMnO 2 for CR were systematically evaluated. The results indicated that CS-Ca@PEI/CuMnO 2 has exceptional degradation capacity, achieving 91.0% degradation of CR at pH 7. After three degradation cycles, the catalyst maintained an 86.9% degradation efficiency compared to its original performance, highlighting its robust structural stability. The presence of reactive radicals, specifically 1 O 2 and • O 2 − , were confirmed through quenching experiments, X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance spectroscopy (EPR). Liquid chromatography-tandem mass spectrometry (LC-MS) revealed ten proposed intermediates in the catalytic degradation process. Due to its exceptional catalytic performance, structural durability, recyclability, and ease of retrieval, the catalyst shows great potential for effectively removing organic pollutants from industrial wastewater.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Yang,

Hu,

Rao

et al. 2024

Langmuir

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Magnetic‐field‐induced Fe₃O₄@CNTs/PES/SPSf composite membrane for efficient removal of methylene blue by adsorption and catalytic degradation

Ji,

Zhang,

Han

et al. 2023

J of Applied Polymer Sci

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Novel composite membranes are successfully developed for adsorption and catalytic degradation of methylene blue (MB) by blending Fe3O4‐coated CNTs (Fe3O4@CNTs) nanoparticles in polyethersulfone (PES) and sulfonated polysulfone (SPSf) matrix via nonsolvent‐induced phase separation (NIPS) method assisted by magnetic field. Fe3O4@CNTs nanoparticles migrate to the separation layer under the induction of magnetic field, thus Fe3O4@CNTs/PES/SPSf composite membranes prepared under magnetic field exhibit a better dye removal ability compared with that without magnetic field. The MB removal ratio by Fe3O4@CNTs/PES/SPSf composite membrane containing 8 wt% Fe3O4@CNTs (M2−M) can reach up to 99% in 30 min under the conditions of 0.25 g composite membrane, 20 mg/L MB, 0.1 mol/L H2O2, pH = 3 and 80°C. Furthermore, the composite membranes show excellent recycling performance, as the MB removal capacity remains at 99% even after four cycles.

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Construction of a novel ferrihydrite/MoS2 heterogeneous Fenton-like catalyst for efficient degradation of organic pollutants under neutral conditions

Chang,

Sun,

Wang

et al. 2023

Environ Sci Pollut Res

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Magnetic nanoreactor Fe3O4@HNTs as heterogeneous Fenton-like catalyst for acid fuchsin degradation: Efficiency, kinetics and mechanism

Cited by 18 publications

References 65 publications

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Magnetic‐field‐induced Fe₃O₄@CNTs/PES/SPSf composite membrane for efficient removal of methylene blue by adsorption and catalytic degradation

Construction of a novel ferrihydrite/MoS2 heterogeneous Fenton-like catalyst for efficient degradation of organic pollutants under neutral conditions

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Magnetic nanoreactor Fe3O4@HNTs as heterogeneous Fenton-like catalyst for acid fuchsin degradation: Efficiency, kinetics and mechanism

Cited by 18 publications

References 65 publications

Reusable CS-Ca@PEI/CuMnO2 Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Reusable CS-Ca@PEI/CuMnO2 Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Magnetic‐field‐induced Fe3O4@CNTs/PES/SPSf composite membrane for efficient removal of methylene blue by adsorption and catalytic degradation

Construction of a novel ferrihydrite/MoS2 heterogeneous Fenton-like catalyst for efficient degradation of organic pollutants under neutral conditions

Contact Info

Product

Resources

About

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Reusable CS-Ca@PEI/CuMnO₂ Hydrogel Beads for Peroxymonosulfate-Activated Degradation of Congo Red

Magnetic‐field‐induced Fe₃O₄@CNTs/PES/SPSf composite membrane for efficient removal of methylene blue by adsorption and catalytic degradation