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Reference type: Journal
Authors: Gao BJ, Zhang TT, Chen T
Article Title: Preparation and Ion Recognition Characteristics of a Trichloroacetic Acid Surface-Imprinted Material.
Publication date: 2015
Journal: Water Environment Research
Volume: 87
Issue: (5)
Page numbers: 404-413.
DOI: 10.2175/106143015X14212658614162
Alternative URL: http://www.ingentaconnect.com/content/wef/wer/2015/00000087/00000005/art00003

Abstract: In this work, a trichloroacetic acid (TCAA) surface-imprinted material with high performance was prepared. In an aqueous solution, the molecules of the cationic monomer acryloyloxyethyl-trimethyl ammonium chloride (DAC) arranged around the template TCAA anion via electrostatic interaction. By initiating of the surface-initiating system of -NH2/S2O8 2-, the graft/cross-linking polymerization of DAC and the crosslinker N,N'-Methylenebisacrylamide and the TCAA surface-imprinting were simultaneously carried out on SiO2 particles, forming TCAA anion surface-imprinted material IIP-PDAC/SiO2. With monochloroacetic acid (MCAA) and phenylacetic acid (PAA) as two contrast acids, the recognition character of the imprinted material IIP-PDAC/SiO2 was investigated. This imprinted material possesses special recognition selectivity and excellent binding affinity for TCAA anion. The binding amount of IIP-PDAC/SiO2 particles for TCAA reaches 0.93mmol/g, whereas their binding amounts for MCAA and PAA are only 0.48 mmol/g and 0.15 mmol/g, respectively. The selectivity coefficients of IIP-PDAC/SiO2 for TCAA relative to MCAA and PAA anions are 3.61and 9.12, respectively.
Template and target information: trichloroacetic acid, TCAA
Author keywords: disinfection byproducts, ion recognition, Surface imprinting technique, trichloroacetic acid

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