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Preparation of block copolymers via metal‐free visible‐light‐induced ATRP for the detection of lead ions
Author(s) -
Sun Yue,
Li Juan,
Zhao Mengyuan,
Liu Yutong,
Zhang Jiameng,
Lv Chengwei
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.45863
Subject(s) - detection limit , atom transfer radical polymerization , dielectric spectroscopy , materials science , cyclic voltammetry , copolymer , metal ions in aqueous solution , electrochemistry , stripping (fiber) , polymer , electrode , polymer chemistry , analytical chemistry (journal) , metal , chemistry , organic chemistry , chromatography , composite material , metallurgy
ABSTRACT Polyacrylamide‐ b ‐poly(methacrylic acid) was prepared on the surface of Au electrode (Au/PAM/PMAA) for Pb 2+ ion electrochemical sensing via metal‐free visible‐light‐induced atom transfer radical polymerization, which was very simple, convenient, and environmentally friendly. Au/PAM/PMAA was carefully examined by cyclic voltammetry, electrochemical impedance spectroscopy, and X‐ray photoelectron spectroscopy. Further, Au/PAM/PMAA was successfully used for the determination of Pb 2+ ion by differential pulse anodic stripping voltammetry. Under the optimal conditions, a linear response from 1.0 × 10 −11 to 1.0 × 10 −4 mol/L with detection limit of 2.5 × 10 −12 mol/L ( S / N = 3) was achieved from the results of experiments. Comparing with similar Pb 2+ sensors, the broader linear range and lower detection limit suggested the promising prospect of Au/PAM/PMAA. In a word, the work of this article had an important significance for the polymer‐modified electrodes and the sensitive detection of Pb 2+ . © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45863.