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Electrocatalytic activity of Cu2O nanocubes-based electrode for glucose oxidation

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Title Electrocatalytic activity of Cu2O nanocubes-based electrode for glucose oxidation
 
Creator FELIX, S
KOLLU, P
RAGHUPATHY, BPC
JEONG, SK
GRACE, AN
 
Subject Cuprous oxide nanocubes
electrocatalysis
non-enzymatic glucose sensor
amperometric sensing
HYDROGEN-PEROXIDE
COPPER NANOPARTICLES
CARBON NANOTUBES
ELECTROCHEMICAL DETECTION
ZNO NANOPARTICLE
BIOSENSOR
SENSOR
FABRICATION
GRAPHENE
OXIDE
 
Description A direct electrocatalytic activity of glucose oxidation on cuprous oxide modified glassy carbon electrode is reported. Cu2O nanocubes were synthesized by a simple wet chemical route in the absence of surfactants. Purity, shape and morphology of Cu2O are characterized by XRD, SEM, XPS and DRS-UV. The Cu2O nanocubes-modified glassy carbon electrode (GCE) exhibited high electrocatalytic activity towards glucose oxidation compared with bare GCE electrode. At an applied potential of +0.60 V, the Cu2O electrode presented a high sensitivity of 121.7 mu A/mM. A linear response was obtained from 0 to 500 mu M, a response time less than 5 s and a detection limit of 38 mu M (signal/noise=3). The Cu2O nanocubes-modified electrode was stable towards interfering molecules like uric acid (UA), ascorbic acid (AA) and dopamine (DA). In short, a facile chemical preparation process of cuprous oxide nanocubes, and the fabricated modified electrode allow highly sensitive, selective, and fast amperometric sensing of glucose, which is promising for the future development of non-enzymatic glucose sensors.
 
Publisher INDIAN ACAD SCIENCES
 
Date 2014-12-28T09:06:09Z
2014-12-28T09:06:09Z
2014
 
Type Article
 
Identifier JOURNAL OF CHEMICAL SCIENCES, 126(1)25-32
0974-3626
0973-7103
http://dspace.library.iitb.ac.in/jspui/handle/100/16244
 
Language English