Graphene based nanomaterials as electrochemical detectors in Lab-on-a-chip devices
- Chun Kiang Chua, Adriano Ambrosi, Martin Pumera*
Graphene related materials have received significant attention as new and advantageous materials for electrochemistry. Here we present an evaluation of graphene oxide amperometric detectors in microfluidics devices and we compare the results to those obtained at graphite microparticles and bare glassy carbon electrodes. We evaluate the influence on peak currents (sensitivity) and peak width (resolution and separation efficiency) of neurotransmitters and nitroaromatic explosives. We conclude that there is no major advantage of using graphene oxide as detector in microfluidics devices and graphite microparticles-based amperometric detectors in microfluidics provide an equivalent or better performance. (C) 2011 Elsevier B.V. All rights reserved.
Recoverable Bismuth-Based Microrobots: Capture, Transport, and On-Demand Release of Heavy Metals and an Anticancer Drug in Confined Spaces
Micro/Nanomotors for Water Purification