MIPs logo MIPdatabase     MIP2018 Conference website
Reference type: Journal
Authors: Liu Y, Meng XG, Liu ZC, Meng MJ, Jiang FP, Luo M, Ni L, Qiu J, Liu FF, Zhong GX
Article Title: Preparation of 2D Ion-Imprinted Polymer Based on Graphene Oxide/SiO2 Composite for Selective Adsorption of Nickel Ions.
Publication date: 2015
Journal: Langmuir
DOI: 10.1021/acs.langmuir.5b01201

Abstract: In the present work, a novel two-dimensional (2D) nickel ion-imprinted polymer (RAFT-IIP) has been successfully synthesized based on graphene oxide/SiO2 composite by reversible addition-fragmentation chain transfer (RAFT) polymerization. The imprinted materials obtained are characterized by fourier transmission infrared spectrometry (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The results show that the thermal stability of graphene oxide/SiO2 composite is obviously higher than that of graphene oxide. RAFT-IIP possesses an excellent 2D homogeneous imprinted polymer layer, which is well preserved unique structure of graphene oxide/SiO2. Owing to the intrinsic advantages of RAFT polymerization and 2D imprinted material, RAFT-IIP demonstrate a superior specific adsorption capacity (81.73 mg/g) and faster adsorption kinetics (30 min) for Ni(II) in comparison to the ion-imprinted polymer prepared by traditional radical polymerization and based on the common carbon material. Furthermore, the adsorption isotherm and selectivity towards Ni(II) onto RAFT-IIP and non-imprinted polymer (NIP) are investigated, indicating that RAFT-IIP has splendid recognizing ability and nearly three times larger adsorption capacity than that of NIP (30.94 mg/g). Moreover, a three-level Box-Behnken experimental design with three factors combining the response surface method is utilized to optimize the desorption process. The optimal conditions for the desorption of Ni(II) from RAFT-IIP are as follows: the eluent kind of HCl, the eluent concentration of 2.0 mol/L and the eluent volume of 10 mL

  Double Bonds spoof movie poster mug  Chemistry peptide mug  Chemists are fun customisable shirt

Molecules Special Issue call     Sensors Special Issue call

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:
US listings   UK listings

Searching for Molecular Imprinting books on Amazon.com:
Molecular Imprinting
Imprinted Polymers
Polymer Chemistry
Organic Chemistry

Find what you need at Amazon.com

Lab supplies from Amazon