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- Title
Co<sub>2</sub>SnO<sub>4</sub>/Carbon Nanotubes Composites: A Novel Approach for Electrochemical Sensing of Hydrogen Peroxide.
- Authors
Yedinak, E.; Venegas, C. J.; Brito, T. P.; Ruiz‐León, D.; Bollo, S.
- Abstract
Abstract: For the first time Co2SnO4 (CTO)/Carbon nanotubes (CNT) composites were prepared and used to modify glassy carbon electrodes for the amperometric determination of hydrogen peroxide. The catalytic activity of composites towards the oxidation of hydrogen peroxide was dependent on the quantity of CNT present in the composite and to the pH of the medium. The pure cobalt stannate phase with a ratio of 3 : 1 (CTO:CNT) exhibited the best catalytic activity towards hydrogen peroxide oxidation at low potentials (0.200 and 0.500 V). A linear relationship between current and hydrogen peroxide concentration was obtained with a sensitivity of 95 and 258 μA mM−1 and a detection limit of 0.130 and 0.08 μM respectively.
- Subjects
ELECTROCHEMICAL electrodes; CARBON monoxide; HYDROGEN peroxide; CARBON electrodes; CARBON nanotubes; CATALYTIC activity
- Publication
Electroanalysis, 2018, Vol 30, Issue 1, p27
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201700551