دورية
An Electrochemical Biosensor with Cholesterol Oxidase/ Sol‐Gel Film on a Nanoplatinum/Carbon Nanotube Electrode
| العنوان: | An Electrochemical Biosensor with Cholesterol Oxidase/ Sol‐Gel Film on a Nanoplatinum/Carbon Nanotube Electrode |
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| المؤلفون: | Qiaocui, Shi, Tuzhi, Peng, Yunu, Zhu, Yang, Catherine F. |
| المصدر: | Electroanalysis; May 2005, Vol. 17 Issue: 10 p857-861, 5p |
| مستخلص: | The carbon nanotubes decorated nanoplatinum (CNT‐Pt) were prepared using a chemical reduction method and a novel base electrode was constructed by intercalating CNT‐Pt on the surface of a waxed graphite electrode. The results showed that the nano‐particles of platinum at a waxed graphite electrode exhibits high catalytic activity for the reduction of hydrogen peroxide. The cholesterol oxidase (ChOx), chosen as a model enzyme, was immobilized with sol‐gel on the CNT‐Pt base electrode to construct a biosensor. The current response of the biosensor for cholesterol was very rapid (<20 s). The linear range for cholesterol measurement was 4.0×10−6mol/L −1.0×10−4mol/L with a detection limit of 1.4×10−6mol/L. The experiments also showed that the ChOx/sol‐gel/CNT‐Pt biosensor was sensitive and stable in detecting cholesterol in serum samples. |
| قاعدة البيانات: | Supplemental Index |
Full Text Finder | تدمد: | 10400397 15214109 |
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| DOI: | 10.1002/elan.200403162 |