期刊
APPLIED SURFACE SCIENCE
卷 409, 期 -, 页码 358-366出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2017.03.003
关键词
Fenton-like; Solid acid; Degradation; Plasma electrolytic oxidation; Coating; Phenol
类别
资金
- National Natural Science Foundation of China [51571076]
- State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology [2015DX07]
- Key Laboratory of Superlight Materials & Surface Technology (Harbin Engineering University), Ministry of Education
A novel immobilized solid acid coating on Q235 carbon steel was successfully prepared via plasma electrolytic oxidation. Sulfate functionalized Fe3O4/FeAl2O4 was confirmed by XRD, TEM and XPS analysis and surface acidic property was verified by NH3-TPD measurement. Fenton-like degradation performance was evaluated by employing phenol as target pollutant. Fast phenol degradation under the wide range of pH (pH 6-9) was accomplished within only 11 min. Without sulfate functionalization, phenol could hardly be degraded by Fenton-like oxidation which meant that after sulfate functionalization the existence of acidic microenvironment on the catalyst surface not only provided an optimal circumstance for enhanced Fenton-like reaction, but also avoided adjusting pH of the treated wastewater. A reasonable Fenton-like degradation mechanism was proposed. This paper offered a novel design thought for synthesizing excellent Fenton-like coating catalyst under circumneutral pH. (C) 2017 Elsevier B.V. All rights reserved.
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