title: Heterogeneous activation of peroxymonosulfate by amorphous boron for degradation of bisphenol S.
abstract: 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.
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
authors: Penghui
authors: P
authors: Shao
authors: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors: Xiaoguang
authors: X
authors: Duan
authors: Department of Civil Engineering and Architecture, Nanyang Normal University, Nanyang 473061, PR China; State Key Laboratory of Motor Vehicle Biofuel Technology, Nanyang 473000, PR China. Electronic address: xujunhit@126.com.
authors: Jun
authors: J
authors: Xu
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China. Electronic address: tjy800112@163.com.
authors: Jiayu
authors: J
authors: Tian
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
authors: Wenxin
authors: W
authors: Shi
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
authors: Shanshan
authors: S
authors: Gao
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
authors: Mingjun
authors: M
authors: Xu
authors: State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
authors: Fuyi
authors: F
authors: Cui
authors: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia. Electronic address: Shaobin.wang@curtin.edu.au.
authors: Shaobin
authors: S
authors: Wang
keywords: Amorphous boron; Bisphenol S; Heterogeneous catalysis; Peroxymonosulfate