Affiliation:
1. Key Laboratory of Preparation and Application of Environmenl Friendly Materials Ministry of Education Jilin Normal University Changchun 130103 P.R. China
2. College of chemistry Jilin Normal University Siping 136000 P.R. China
3. Jilin province product quality supervision and inspection institute Changchun 13010 P.R. China
4. College of Engineering Jilin Normal University Siping 136000 P.R. China
5. College of chemistry Baicheng Normal University Baicheng 137018 P.R. China
Abstract
AbstractFabricating hydrophilic imprinted materials with eminent aqueous recognition capacity is a bottleneck problem in imprinting field. Herein, a magnetic superhydrophilic imprinted nanocomposite resin (MWNTs@MIR) was first fabricated on magnetic multi walled carbon nanotube with 2,4,6‐trichlorophenol as virtual template, 3‐aminophenol as functional monomer and glyoxylic acid as crosslinking monomer. Via employing MWNTs@MIR as adsorbent and combining with magnetic solid‐phase extraction, the effective enrichment of chlorophenols (CPs) in water is realized. The SEM, TEM, FTIR, XRD and other characterizations confirm that the MWNTs@MIR has been successfully prepared and exhibits excellent magnetism (separated by external magnet within 30 s) and superhydrophilicity (water contact angle 0°). Under optimized extraction conditions, MWNTs@MIR can be directly employed for rapid and efficient extraction of four CPs in water (the extraction recoveries reach 78 %–92 %), and exhibits excellent selectivity (the extraction efficiency of MWNTs@MIR for the four CPs is evidently higher than that of the corresponding non‐imprinted material and reference compound) and stability (the recoveries of CPs did not significantly decrease after 5 cycles). The research provided a novel, easy and economical route for constructing hydrophilic imprinted materials to realize efficient extraction of CPs in water, and has potential application in the field of sample pretreatment and analytical chemistry.