dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Autonomous University of Barcelona (UAB) | |
dc.contributor | National University of Engineering | |
dc.date.accessioned | 2018-12-11T17:08:56Z | |
dc.date.available | 2018-12-11T17:08:56Z | |
dc.date.created | 2018-12-11T17:08:56Z | |
dc.date.issued | 2017-05-01 | |
dc.identifier | Materials Science and Engineering C, v. 74, p. 365-373. | |
dc.identifier | 0928-4931 | |
dc.identifier | http://hdl.handle.net/11449/174055 | |
dc.identifier | 10.1016/j.msec.2016.12.019 | |
dc.identifier | 2-s2.0-85008953557 | |
dc.identifier | 2-s2.0-85008953557.pdf | |
dc.description.abstract | Molecularly imprinted polymers (MIPs) in combination with magnetic nanoparticles, in a core@shell format, were studied for selective detection of 1-chloro-2,4-dinitrobenzene (CDNB), a powerful allergenic substance. Magnetic nanoparticles were prepared by the co-precipitation method and mixed with oleic acid (OA). This material was then encapsulated in three types of hydrophobic polymeric matrix, poly-(MA-co-EDGMA), poly-(AA-co-EDGMA), and poly-(1-VN-co-EDGMA), by the mini-emulsion method. These matrices were used due to their ability to interact specifically with the functional groups of the analyte. Finally, the MIP-CDNB was obtained on the magnetic-hydrophobic surfaces using precipitation polymerization in the presence of the analyte. XRD diffraction patterns suggested the presence of magnetite in the composite and SEM analysis revealed a nanoparticle size between 10 and 18 nm. Under the optimized adsorption conditions, the magnetic-MIP material showed a higher adsorption capacity (5.1 mg g− 1) than its non-magnetic counterpart (4.2 mg g− 1). In tests of the selectivity of the magnetic-MIP towards CDNB, α-values of 2.5 and 10.4, respectively, were obtained for dichlorophenol and o-nitrophenol, two structurally similar compounds, and no adsorption was observed for any other non-analogous analyte. The magnetic-MIP and magnetic-NIP were applied using water enriched with 0.5 mg L− 1 of CDNB, achieving recovery values of 83.8(± 0.8)% and 66(± 1)%, respectively, revealing the suitability of the material for detection of CDNB. | |
dc.language | eng | |
dc.relation | Materials Science and Engineering C | |
dc.relation | 1,110 | |
dc.rights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | 1-Chloro-2,4-dinitrobenzene | |
dc.subject | Allergenic substances | |
dc.subject | Biomimetic polymers | |
dc.subject | Environmental control | |
dc.subject | Magnetic-MIP | |
dc.subject | Plastic antibodies | |
dc.title | Synthesis of a new magnetic-MIP for the selective detection of 1-chloro-2,4-dinitrobenzene, a highly allergenic compound | |
dc.type | Artículos de revistas | |