Abstract
Highly active catalysts remain a vital issue for the Fenton-like degradation of polychlorinated phenols by H2O2. To this question, Cu0-Fe3O4 nanocatalysts functionalized with hydroxyl and carboxyl groups were prepared in this paper, and the Cu0-Fe3O4-H2O2 Fenton-like system was constructed and investigated for the degradation of chlorophenols. The results showed that Cu0 could greatly improve the oxidation activity of the system. 0.04 g Cu0-Fe3O4 composite (Fe/Cu = 3/1 mol/mol) could activate 20 μL H2O2 (30%) degrade near 100% DCP or 2,4,6-TCP or nitrophenol in 100 mL solution in the concentration of 50 mg/L within 1–5 min under initial pH 3.0–8.0, 25 °C. The Cu0-Fe3O4-H2O2 system showed high activity and broad pH applicability which was mainly due to the improved Fe(III)/Fe(II) cycle by Cu0, the reduced redox potential of Fe(III)/Fe(II) by functionalized group, and the adsorption ability of Cu0-Fe3O4 nanocomposites on chlorophenols. The degradation of 2,4-DCP was a combination of oxidative and reductive processes. About 86.6% was oxidized and 13.4% was reduced during the degradation. This study provides a potential method for quickly removing phenolic pollutants.
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The datasets used and analyzed during the current study are available within the article and its supplementary information files or from the corresponding author upon reasonable request.
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This work was supported by the National Natural Science Foundation of China [Grant number 51508233] and the Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology.
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Lixia Li: the conception of the study; Jiajian Xiao: experiment, analysis, and manuscript preparation; Yuan Lu and Xinyu Yao: experiment; Wang Zhan: drawing of the graph; Qinkai Guo: data analysis; Songmei Wang: tests
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Xiao, J., Lu, Y., Zhan, W. et al. Highly Efficient Functionalized Cu0-Fe3O4-H2O2 Fenton-Like System for the Degradation of Chlorophenols and Its Mechanism. Water Air Soil Pollut 234, 596 (2023). https://doi.org/10.1007/s11270-023-06601-4
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DOI: https://doi.org/10.1007/s11270-023-06601-4