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Citation
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HERO ID
3981856
Reference Type
Journal Article
Title
Electrochemical mineralization of perfluorooctane sulfonate by novel F and Sb co-doped Ti/SnO2 electrode containing Sn-Sb interlayer
Author(s)
Yang, Bo; Wang, J; Jiang, C; Li, J; Yu, G; Deng, S; Lu, S; Zhang, P; Zhu, C; Zhuo, Q
Year
2017
Is Peer Reviewed?
Yes
Journal
Chemical Engineering Journal
ISSN:
1385-8947
Volume
316
Page Numbers
296-304
DOI
10.1016/j.cej.2017.01.105
Web of Science Id
WOS:000398985200032
Abstract
The F and Sb co-doped Ti/SnO2 electrode containing Sn-Sb interlayer was innovatively synthesized for electro-oxidation (EO) removal of perfluorooctane sulfonate (PFOS) in water. Stronger oxidation capability and remarkably longer lifetime were performed for Ti/Sn-Sb/SnO2-F-Sb electrode than these similar electrodes in this study without Sn-Sb interlayer and F/Sb doping, which could removed more than 99% of PFOS (C-o = 100 mg L-1) after 120-min electrolysis. The attribute of Ti/Sn-Sb/SnO2-F-Sb anode and its EO mechanism-were surveyed by XRD, XPS, SEM, and LSV. F and Sb co-doping could improve the stability and EO capability of the electrode, which resulted from that the smooth surface was formed conveniently to produce physically adsorbed hydroxyl radical and lead to relatively high OEP. The operating parameters of EO process were also investigated including current density, pH value, and stirring speed, which revealed the effect of these parameters on PFOS decomposition. Additionally, the mineralization parameters, TOC and F- concentration, as well as short-chain perfluorocarboxylic acids were analyzed in solution during the electrolysis. Consequently, the EO pathway of PFOS was proposed through the detection of intermediates. These results manifest that Ti/Sn-Sb/SnO2-F-Sb anode is prospective to effectively decompose PFOS in wastewater. (C) 2017 Elsevier B.V. All rights reserved.
Keywords
F/Sb co-doping; Sn-Sb interlayer; Ti/SnO2 electrode; PFOS electro-oxidation
Tags
PFAS
•
Expanded PFAS SEM (formerly PFAS 430)
Perfluorooctane
•
^Per- and Polyfluoroalkyl Substances (PFAS)
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search – Adverse outcome pathway (2015-present)
WOS
Screening Results
Excluded/Not on Topic
Literature Search Update (2013-2019)
WOS
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