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Reference type: Journal
Authors: Tang B, Shi HJ, Fan ZY, Zhao GH
Article Title: Preferential electrocatalytic degradation of 2,4-dichlorophenoxyacetic acid on molecular imprinted mesoporous SnO2 surface.
Publication date: 2018
Journal: Chemical Engineering Journal
Volume: 334
Page numbers: 882-890.
DOI: 10.1016/j.cej.2017.10.086
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1385894717318016

Abstract: A molecular-imprinted mesoporous SnO2 electrode surface has been developed to achieve deep degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) in complex coexisting system. Preferential electrocatalytic degradation of 2,4-D on our prepared electrode was observed in both the single component and coexisting system. The concentration of 2,4-D dropped down to 54 ppb after 6 h degradation in the coexisting sewage water system. The result reveals that our prepared electrode exhibited specific electrochemical recognition of target molecular 2,4-D. Besides, the mesoporous structure of SnO2 was proved to be great improvement of electrochemical activity with higher BET surface area (~148.8 m2 g-1), electrochemical effective surface area (7.41 cm2 cm-2) and ĽOH generation ability (66.5 μmol L-1) compared to conventional SnO2 electrode. However, the electrochemical activity influenced by the construction of MI sites was negligible. Furthermore, the preferential adsorption of 2,4-D on the surface of MI-meso SnO2 electrode was proved by both FT-IR spectra and chronocoulometry method
Template and target information: 2,4-dichlorophenoxyacetic acid, 2,4-D
Author keywords: Preferential degradation, Molecular imprinted, Mesoporous SnO, 2,4-D, Anti-interference ability, Electrocatalysis


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