期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 322, 期 -, 页码 532-539出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2016.10.020
关键词
Heterogeneous catalysis; Peroxymonosulfate; Amorphous boron; Bisphenol S
资金
- National Natural Science Foundation of China [51208140]
- Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology [QA201524]
- Key Scientific Research Project of Henan Colleges and Universities [15A560033]
- Scientific Research Project of Nanyang Normal University [NYNU670043]
- Australian Research Council [DP130101319]
Recently, tremendous efforts have been devoted to developing carbon-based metal-free catalysts as an alternative to metal-based catalysts for remediation of emerging contaminants. However, further investigations have demonstrated that the durability of carbocatalysts is poor. Therefore, it is extremely desirable to seek a novel metal-free catalyst with high efficiency and superb stability. Herein, we first discovered that amorphous boron (A-boron) can be used as a metal-free catalyst for peroxymonosulfate (PMS) activation to produce free radicals for effective degradation of bisphenol S (BPS), which is a newly-occurring estrogenic endocrine-disrupting chemical. It exhibited outstanding catalytic activity and superior stability as comparing to metal-based and metal-free carbon-based catalysts. Moreover, many other typical organic pollutants in water such as bisphenol F, sulfamethoxazole, rhodamine B and methyl orange can also be effectively decomposed in A-boron/PMS oxidative system. The effects of reaction parameters on BPS degradation were systematically investigated. The catalytic oxidation mechanism was proposed. The intriguing catalytic feature of A-boron discovered in this study will provide new opportunities for the future development of A-boron based materials with promising applications in water remediation. (C) 2016 Elsevier B.V. All rights reserved.
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