MIPs logo MIPdatabase      Use this space
Custom Search
Reference type: Journal
Authors: Fernandes RS, Dinc M, Raimundo IM, Mizaikoff B
Article Title: Synthesis and characterization of porous surface molecularly imprinted silica microsphere for selective extraction of ascorbic acid.
Publication date: 2018
Journal: Microporous And Mesoporous Materials
Volume: 264
Page numbers: 28-34.
DOI: 10.1016/j.micromeso.2017.07.019
Alternative URL: https://www.researchgate.net/publication/318454272_Synthesis_and_characterization_of_porous_surface_molecularly_imprinted_silica_microsphere_for_selective_extraction_of_ascorbic_acid

Abstract: Molecularly imprinted polymers (MIPs) with core-shell structure for efficient, reliable, and selective extraction of ascorbic acid (AA) were developed via co-polymerization process based on acrylamide (AM) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as cross-linker, 2,2'-azobis(2-methylpropionitrile) (AIBN) as initiator, and AA as template. The inorganic core comprised of amino-functionalized silica microspheres (AFSM) was prepared by co-condensation of tetraethylorthosilicate (TEOS) and (3-aminopropyl)trimethoxysilane) (APTMS) in a water-in-oil (W/O) macroemulsion. The synthesized materials were characterized by IR-ATR, SEM, and N2 adsorption-desorption isotherm. The binding properties and selectivity of the AFSM@MIP and AFSM@NIP (i.e., non-imprinted polymers) were demonstrated by adsorption capacity and imprinting factor obtained based on UV-Vis absorption measurements. Furthermore, synthesis conditions were optimized such that imprinting efficiency and adsorption capacity were maximized. Finally, it was demonstrated that generated MIP core-shell hybrid microspheres provide rapid adsorption with high binding capacities (up to 5.08 mg g-1), excellent imprint factors, and exceptional reusability. A comparative study using AFSM@MIP and AFSM@NIP for simultaneous extraction of AA and citric acid (CA), allowed verifying the excellent selectivity of AFSM@MIP, which presented an imprinting factor of 2.30
Template and target information: ascorbic acid, AA, vitamin C
Author keywords: Core-shell, Porous silica microspheres amino-functionalized, molecularly imprinted polymer, MIP, ascorbic acid

  I love MIPs apron  multi MIPs logo mug  British periodic table patriotic tote bag

Molecules Special Issue call      Appeal for information


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner