Issue 12, 2011

Chemical amination of graphene oxides and their extraordinary properties in the detection of lead ions

Abstract

A strategy for the ultra-sensitive detection of Pb2+ in aqueous media has been developed. The combination of oxidative exfoliation of graphite and subsequent chemical amination resulted in an amine functionalized graphene oxide, which showed ultra-high sensitivity in detecting Pb2+, as it is an active material in modified anodic stripping voltammetry. A detection limit of as low as 10−13 M (0.1 pM) has been reached, which is comparable to the result obtained from atomic absorption spectrometry, but is dramatically lower than that from other reported electrochemical analysis methods. This simple and economic approach opens up a new window for the portable, quick, and ultra-sensitive detection of lead ions.

Graphical abstract: Chemical amination of graphene oxides and their extraordinary properties in the detection of lead ions

Supplementary files

Article information

Article type
Paper
Submitted
21 Jul 2011
Accepted
17 Sep 2011
First published
31 Oct 2011

Nanoscale, 2011,3, 5059-5066

Chemical amination of graphene oxides and their extraordinary properties in the detection of lead ions

B. Wang, B. Luo, M. Liang, A. Wang, J. Wang, Y. Fang, Y. Chang and L. Zhi, Nanoscale, 2011, 3, 5059 DOI: 10.1039/C1NR10901D

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