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Facile preparation of a silica‐sphere–poly(catechol hexamethylenediamine) composite for the competitive removal of cadmium(II), lead(II), and copper(II) ions
Author(s) -
Wei Gang,
Dong Kaijie,
Liu Qinze,
Gao Tingting,
Yao Jinshui
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45839
Subject(s) - hexamethylenediamine , thermogravimetric analysis , adsorption , materials science , catechol , composite number , chemical engineering , polymer chemistry , fourier transform infrared spectroscopy , nuclear chemistry , chemistry , composite material , organic chemistry , polyamide , engineering
A silica‐sphere–poly(catechol hexamethylenediamine) (PCHA–SiO 2 ) composite was prepared via the one‐step facile polymerization of catechol and hexamethylenediamine; this method uses a silica sphere as a hard template. The chemical structures and morphologies of this composite were characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy. The adsorption experiments indicated that the PCHA–SiO 2 composite served as a very attractive adsorbent for Pb(II)‐, Cu(II)‐, and Cd(II)‐ion removal at lower concentrations and had very good selective adsorption abilities for Pb(II) and Cu(II) ions in a solution contaminated with these three ions at higher concentrations. These interesting results may have been due to the reversible H + adsorption–desorption properties of the characteristic phenol amine structure of the PCHA–SiO 2 composite. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45839.