TITLE:
Highly-Controllable Imprinted Polymer Nanoshell on the Surface of Silica Nanoparticles for Selective Adsorption of 17β-Estradiol
AUTHORS:
Xue Fu, Bo Song, Xiaozhen Chen, An Wang, Chun Wang
KEYWORDS:
Surface-Imprinting, Core-Shell Nanoparticle, Selective Adsorption, 17β-Estradiol
JOURNAL NAME:
Journal of Encapsulation and Adsorption Sciences,
Vol.8 No.4,
November
20,
2018
ABSTRACT: A highly-controllable core-shell silica-MIPs absorbent by anchoring a MIPs layer to the surface of SiO2 nanoparticles via a
surface molecular imprinting process was prepared. The templates were
covalently modified with functional monomers to form precursor EstSi. The latter
together with coupling reagent KH-570, were grafted onto the surface of SiO2 nanoparticles before polymerization, to ensure the quantity and quality of
imprinted sites on the surface of the covalently attached matrix. The
as-synthesized core-shell nanomaterials (SiO2@MIP2) were then
evaluated for selective adsorption of 17β-estradiol
(E2) with Raman spectra as detection method. The results indicate that SiO2@MIP2
can fast and selectively adsorb E2 from structural analogues, with detection
limit of 0.01 μmol/l.