Cu2O and Au/Cu2O Particles: Surface Properties and Applications in Glucose Sensing
Date of this Version
10-2012Citation
Sensors 2012, 12(10), 13019-13033; doi:10.3390/s121013019
Abstract
In this work we investigated the surface and facet-dependent catalytic properties of metal oxide particles as well as noble metal/metal oxide heterogeneous structures, with cuprous oxide (Cu2O) and Au/Cu2O being selected as model systems. As an example of application, we explored the potential of these materials in developing electrocatalytic devices. Cu2O particles were synthesized in various shapes, then used for testing their morphology-dependent electrochemical properties applied to the detection of glucose. While we did not attempt to obtain the best detection limit reported to date, the octahedral and hexapod Cu2O particles showed reasonable detection limits of 0.51 and 0.60 mM, respectively, which are physiologically relevant concentrations. However, detection limit seems to be less affected by particle shapes than sensitivity. Heterogeneous systems where Au NPs were deposited on the surface of Cu2O particles were also tested with similar results in terms of the effect of surface orientation.
Discipline(s)
Nanoscience and Nanotechnology
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This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Cu2O and Au/Cu2O Particles: Surface Properties and Applications in Glucose Sensing and may be found at http://dx.doi.org/10.3390/s121013019. The following article has been submitted to/accepted by Sensors. Copyright (2012) Yu-Ho Won and Lia A. Stanciu. This article is distributed under a Creative Commons Attribution 3.0 Unported License.