Synthesis of Co-CeO2 nanoflake arrays and their application to highlysensitive and selective electrochemical sensing of hydrazine
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Synthesis of Co-CeO2 nanoflake arrays and their application to highlysensitive and selective electrochemical sensing of hydrazine
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| Creator |
Premlatha, S.
Sivasakthi, P. Ramesh Bapu, G.N.K. |
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| Subject |
Electrodeposition
Electrodics and Electrocatalysis |
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| Description |
A highly sensitive hydrazine sensor was successfully fabricated based on Co-CeO2 modified nanocomposites by
employing a simple, cost effective and versatile electrodeposition technique. The surfacemorphology and the elemental
composition were examined from SEM, FESEM and EDAX analysis. The oxidation states of Co and CeO2
nanoparticleswere characterized using XPS. The crystallite structure and the preferred orientationwere analyzed
with XRD patterns. FESEMimages showed the hierarchical cobalt nanoflakes morphology inwhich the spherical
shaped CeO2 nanoparticleswere embedded over the electrode surface. The electrochemical determination of hydrazine
was characterized using cyclic voltammetry and chronoamperometric methods. Interestingly, compared
with pure Co, themodified Co-CeO2 electrodeminimizes the overpotential at 0.28 V and largely enhances the oxidation
peak current (2.6 mA) for hydrazine electro-oxidation. Amperometric experiments for hydrazine exhibited
two linear ranges from0.005mMto 0.1mMand from0.13mMto 0.37mM. In particular the detection limits
obtained for the Co-CeO2 modified electrodes were 6 and 12 nm respectively. The extreme sensitivity and selectivity of the proposed senor material could be due to the porous nature of the material. The analytical parameters revealed that Co-CeO2 nanocomposites are the promising electrocatalyst for hydrazine sensing
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| Publisher |
Elsevier B.V.
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| Date |
2017-01-31
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3231/1/095-2017.pdf
Premlatha, S. and Sivasakthi, P. and Ramesh Bapu, G.N.K. (2017) Synthesis of Co-CeO2 nanoflake arrays and their application to highlysensitive and selective electrochemical sensing of hydrazine. Journal of Electroanalytical Chemistry, 788. pp. 107-117. ISSN 1572-6657 |
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| Relation |
http://www.elsevier.com/locate/elecom
http://cecri.csircentral.net/3231/ |
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