کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1669968 | 1008893 | 2010 | 4 صفحه PDF | دانلود رایگان |
An electrochemical biosensor based on ZnO nanorods for potentiometric cholesterol determination is proposed. Hexagon-shaped ZnO nanorods were directly grown on a silver wire having a diameter of 250 μm using low temperature aqueous chemical approach that produced ZnO nanorods with a diameter of 125–250 nm and a length of ~ 1 μm. Cholesterol oxidase (ChOx) was immobilized by a physical adsorption method onto ZnO nanorods. The electrochemical response of the ChOx/ZnO/Ag biosensor against a standard reference electrode (Ag/AgCl) was investigated as a logarithmic function of the cholesterol concentration (1 × 10−6 M to 1 × 10−2 M) showing good linearity with a sensitivity of 35.2 mV per decade and the stable output signal was attained at around 10 s.
Journal: Thin Solid Films - Volume 519, Issue 3, 30 November 2010, Pages 1106–1109