Sol-gel derived nanoporous cerium oxide film for application to cholesterol biosensor
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Sol-gel derived nanoporous cerium oxide film for application to cholesterol biosensor
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| Creator |
Ansari, Anees A.
Kaushik, A. Solanki, P. R. Malhotra, B. D. |
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| Subject |
Electrochemistry
Physics |
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| Description |
Cholesterol oxidase (ChOx) has been immobilized onto sol-gel derived nano-structured cerium oxide (NS-CeO2) film deposited on indium-tin-oxide (ITO) coated glass substrate. Phase identification of sol-gel NS-CeO2 film carried out using X-ray diffraction (XRD) yields reflection peak at 29.4 degrees corresponding to (111) plane with oriented crystallite (34 nm) along c-axis normal to the substrate. Electrochemical studies reveal that NS-CeO2 provides electroactive surface for the loading of ChOx and enhances electron transfer rate in the ChOx/NS-CeO2/ITO bioelectrocle. The low value of Michaelis-Menten constant (K-m) obtained as 2.08 mM indicates enhanced ChOx affinity to cholesterol. The observed results show application of sol-gel derived NS-CeO2 for biosensing without any functionalization.
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| Publisher |
Elsevier
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2106/1/234.pdf
Ansari, Anees A. and Kaushik, A. and Solanki, P. R. and Malhotra, B. D. (2008) Sol-gel derived nanoporous cerium oxide film for application to cholesterol biosensor. Electrochemistry Communications , 10 (9). 1246-1249 . ISSN 1388-2481 |
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| Relation |
http://npl.csircentral.net/2106/
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