Analytical and Bioanalytical Chemistry

, Volume 399, Issue 1, pp 127–131

Graphene-based electrochemical sensor for detection of 2,4,6-trinitrotoluene (TNT) in seawater: the comparison of single-, few-, and multilayer graphene nanoribbons and graphite microparticles

Original Paper

DOI: 10.1007/s00216-010-4338-8

Cite this article as:
Goh, M.S. & Pumera, M. Anal Bioanal Chem (2011) 399: 127. doi:10.1007/s00216-010-4338-8

Abstract

The detection of explosives in seawater is of great interest. We compared response single-, few-, and multilayer graphene nanoribbons and graphite microparticle-based electrodes toward the electrochemical reduction of 2,4,6-trinitrotoluene (TNT). We optimized parameters such as accumulation time, accumulation potential, and pH. We found that few-layer graphene exhibits about 20% enhanced signal for TNT after accumulation when compared to multilayer graphene nanoribbons. However, graphite microparticle-modified electrode provides higher sensitivity, and there was no significant difference in the performance of single-, few-, and multilayer graphene nanoribbons and graphite microparticles for the electrochemical detection of TNT. We established the limit of detection of TNT in untreated seawater at 1 μg/mL.

https://static-content.springer.com/image/art%3A10.1007%2Fs00216-010-4338-8/MediaObjects/216_2010_4338_Figa_HTML.jpg
Figure

Graphene for detection of TNT based explosives

Keywords

ElectrochemistrySensorsExplosives

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Division of Chemistry & Biological Chemistry, School of Physical and Mathematical SciencesNanyang Technological UniversitySingaporeSingapore