Journal
MICROCHIMICA ACTA
Volume 180, Issue 9-10, Pages 837-843Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-013-1000-0
Keywords
Palladium nanoparticles; Graphite pencil electrode; Chemical preparation; Hydrogen peroxide; Amperometric sensor
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Funding
- King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM)
- National Science, Technology and Innovation Plan [09-BIO780-04]
- KACST [AT-28-27]
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We report on a simple and rapid method for the preparation of a disposable palladium nanoparticle-modified graphite pencil electrode (PdNP-GPE) for sensing hydrogen peroxide (H2O2). The bare and PdNP-modified GPEs were characterized by cyclic voltammetry and SEM. The two electrodes displayed distinct electrocatalytic activities in response to the electrochemical reduction of H2O2. The amperometric detection limits were 45 nM and 0.58 mM, respectively, for the PdNP-GPE and bare-GPE, at an S/N of 3. The electrodes can be prepared simply and at low cost, and represent a promising tool for sensing H2O2.
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