Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 8, Pages 1707-1710Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.06.035
Keywords
Electrochemical sensor; Nanomaterial; Silver microspheres; Hydrogen peroxide
Categories
Funding
- Science and Technology Development Planning Project of Jilin Province [20040125, 20060504, 20070402]
- Scientific Research Planning Project of the Education Department of Jilin Province [200224, 2005109, 2007-45]
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In this paper, we synthesized flowerlike silver microspheres with nanostructures by simply reducing silver nitrate by ascorbic acid in the presence of PVP. The structure was investigated by SEM. The chemical composition was determined by EDX, XRD and XPS. Recent studies on hydrogen peroxide sensor based on silver nanoparticles inspired us to examine the electrocatalytic activity of prepared microspheres. This electrochemical sensor exhibited good electrocatalytic activity towards the reduction of H2O2 in 0.2 M phosphate buffer Solution (pH 7.0), and the detection limit of H2O2 was found to be 1.2 mu M, which was lower than certain enzyme-based biosensors. (C) 2009 Elsevier B.V. All rights reserved.
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