Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis and application of restricted access material-ion imprinted poly (allylthiourea) for selective separation of Cd2+ and humic acid exclusion

Full text
Author(s):
de Oliveira, Leandro L. G. [1] ; Suquila, Fabio A. C. [1] ; de Oliveira, Fernanda M. [1] ; Scheel, Guilherme L. [1] ; Tarley, Cesar R. T. [1, 2]
Total Authors: 5
Affiliation:
[1] State Univ Londrina UEL, Dept Chem, Rodovia Celso Garcia Cid, PR 445, Km 380, BR-86050482 Londrina, PR - Brazil
[2] Univ Estadual Campinas, Natl Inst Sci & Technol Bioanal INCTBio, UNICAMP, Inst Chem, Dept Analyt Chem, Cidade Univ Zeferino Vaz S-N, BR-13083861 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: REACTIVE & FUNCTIONAL POLYMERS; v. 134, p. 93-103, JAN 2019.
Web of Science Citations: 4
Abstract

A new restricted access cadmium ion-imprinted poly(allythiourea) was synthesized and evaluated as sorbent for Cd2+ preconcentration with simultaneous exclusion of humic acid (HA). Restricted access medium-ion imprinted polymer was assessed by using the co-monomer 2-hydroxyethyl methacrylate (HEMA) as well as by surface coating with bovine serum albumin (BSA). A set of techniques were used for sorbent characterization including, Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), CHNS/O elemental analysis, Thermogravimetric Analysis (TGA), N-2 physisorption to obtain textural data, swelling effect analysis (SE) and wettability. HP modified with HEMA and HP modified with HEMA-BSA, compared with IIP showed better performance in binding Cd2+ and simultaneous HA exclusion. However, based on relative selectivity coefficient (k'), the selective sorption of Cd2+ and efficient HA exclusion was achieved by using HP-HEMA. The obtained results demonstrate that coating of BSA onto IIP surface is unnecessary for preparing restricted material medium-ion imprinted polymer as well as decreases the selectivity of imprinted polymer. Therefore, the insertion of HEMA in the synthesis of TIP has been the best strategy to obtain a highly selective ion imprinted polymer with restricted access very promising for practical application in the interference-free determination of Cd2+ in natural waters. (AU)

FAPESP's process: 14/50867-3 - INCT 2014: National Institute of Science and Technology in Bioanalysis
Grantee:Marco Aurelio Zezzi Arruda
Support Opportunities: Research Projects - Thematic Grants