Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 107, Issue 1, Pages 303-310Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2004.10.016
Keywords
gold nanoparticle; redox polymer; layer-by-layer; electrocatalysis; ascorbic acid
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Redox polymer/gold nanoparticles multilayer films were constructed on a glassy carbon electrode (GCE) by layer-by-layer (LBL) method. UV-vis spectroscopy, atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and electrochemical method were used to characterize the assembled multilayer films, which showed high electrocatalytic activity for the oxidation of ascorbic acid. Compared with the bare GCE, the oxidation peak potential negatively shifted about 210 mV. The results of cyclic voltammograms showed the peak currents had a good linearly relationship with the concentration of ascorbic acid in the range of 0.1-4.5 mm at a scan rate of 50 mV s(-1). (c) 2004 Elsevier B.V. All rights reserved.
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