Heterogeneous activation of peroxymonosulfate for bisphenol AF degradation with BiOI0.5Cl0.5

Weihong Tang; Yongli Zhang; Hongguang Guo; Yang Liu

doi:10.1039/C9RA01687B

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Heterogeneous activation of peroxymonosulfate for bisphenol AF degradation with BiOI_0.5Cl_0.5†

Weihong Tang,^a Yongli Zhang,

*^a Hongguang Guo^ab and Yang Liu^a

Author affiliations

* Corresponding authors

^a College of Architecture and Environment, Sichuan University, Chengdu 610065, China
E-mail: xyl_scu@126.com
Fax: +86-028-85405534
Tel: +86-028-85408889

^b Department of Civil & Environmental Engineering, University of Washington, Box 352700, Seattle, WA 98195-2700, USA

Abstract

This study represents the first investigation on the application of peroxymonosulfate (PMS) for the degradation of bisphenol AF (BPAF) using halogen bismuth oxide composites (BiOI_0.5Cl_0.5). The hierarchical BiOI_0.5Cl_0.5 was successfully synthesized and systematically characterized with multifarious techniques including XRD, SEM, FTIR and XPS to investigate the morphology and physicochemical properties of the samples. Several parameters affecting the degradation efficiency including catalyst dosage, PMS loading, and pH value were elucidated. Inorganic ions such as HCO₃⁻ showed significant inhibition in the BiOI_0.5Cl_0.5/PMS process due to the quenching effect. The effect of various water matrices including tap water and surface water on the removal of BPAF was studied to indicate that the present reaction system shows great potential for cleaning BPAF waste water. Furthermore, the production of sulfate radicals and hydroxyl radicals was validated through radical quenching and ESR tests, thus a possible oxidation mechanism was proposed. Overall, these results reveal that the activation of PMS by the BiOI_0.5Cl_0.5/PMS system is an efficient and promising advanced oxidation technology for the treatment of BPAF-contaminated waters and wastewaters.

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Article information

DOI: https://doi.org/10.1039/C9RA01687B
Article type: Paper
Submitted: 06 Mar 2019
Accepted: 20 Apr 2019
First published: 07 May 2019
This article is Open Access

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RSC Adv., 2019,9, 14060-14071

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Heterogeneous activation of peroxymonosulfate for bisphenol AF degradation with BiOI_0.5Cl_0.5

W. Tang, Y. Zhang, H. Guo and Y. Liu, RSC Adv., 2019, 9, 14060 DOI: 10.1039/C9RA01687B

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