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- Title
Highly Efficient Functionalized Cu<sup>0</sup>-Fe<sub>3</sub>O<sub>4</sub>-H<sub>2</sub>O<sub>2</sub> Fenton-Like System for the Degradation of Chlorophenols and Its Mechanism.
- Authors
Xiao, Jiajian; Lu, Yuan; Zhan, Wang; Yao, Xinyu; Guo, Qinkai; Wang, Songmei; Li, Lixia
- 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.
- Subjects
TRICHLOROPHENOL; CHLOROPHENOLS; NITROPHENOLS; CARBOXYL group; REDUCTION potential; NANOPARTICLES; COPPER
- Publication
Water, Air & Soil Pollution, 2023, Vol 234, Issue 9, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-023-06601-4