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Reference type: Journal
Authors: Yang JN, Li SZ, Zhang Q, He C, Gong YB, Wu JQ, Liao WC, Shu D, Tian SH
Article Title: Preferential catalytic ozonation of p-nitrophenol by molecularly imprinted Fe3O4/SiO2 core-shell magnetic composites.
Publication date: 2014
Journal: Water Science & Technology
Volume: 69
Issue: (1)
Page numbers: 170-176.
DOI: 10.2166/wst.2013.629
Alternative URL: http://www.iwaponline.com/wst/06901/wst069010170.htm

Abstract: Molecularly imprinted Fe3O4/SiO2 core-shell magnetic composites (Fe3O4/SiO2-MIP) were successfully prepared via anchoring p-nitrophenol (p-NP) imprinted functional polymers on the surface of amino-modified Fe3O4/SiO2 core-shell particles. Synthesized magnetic Fe3O4/SiO2-MIP composites were characterized by X-ray diffraction, scanning electronic microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and magnetic property measurement. The preferential catalytic ozonation of p-nitrophenol was evaluated in comparison with the competitive reaction in the presence of coexistent phenol. The results showed that the prepared Fe3O4/SiO2-MIP composites exhibit strong adsorption ability due to the strong bonding between p-NP and molecularly imprinted layer. The Fe3O4/SiO2-MIP demonstrated a preferential catalytic ozonation of p-NP by the recognition ability of molecularly imprinted layer to the target p-NP. The enhanced catalytic activity using Fe3O4/SiO2-MIP composites could be attributed to the excellent recognition absorption of MIP layer on the surface of Fe3O4/SiO2-MIP to p-NP.
Template and target information: p-nitrophenol, p-NP, 4-nitrophenol
Author keywords: catalytic ozonation, magnetic composites, molecularly imprinting, p-nitrophenol

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