Cholesterol biosensor based on nanoporous zinc oxide modified electrodes

Chia-Yu Lin, Kuo Chuan Ho

研究成果: Conference contribution

摘要

Nanostructured ZnO modified electrodes have been fabricated by co-electrodeposition with eosin Y onto Fdoped SnO2 (FTO) coated glass, and their application for cholesterol biosensor was studied. For cholesterol application, cholesterol oxidase (ChOx) was immobilized onto the ZnO/FTO electrode via physical adsorption. Cyclic voltammetric measurements showed that the ChOx/ZnO/FTO is sensitive to cholesterol and the optimal solution pH for the ChOx/ZnO/FTO electrode for detecting cholesterol was 6.7. Besides, the redox peak current densities are proportional to the square root of scan rate, or v1/2, indicating the electron-transfer process is diffusion limited. The sensitivity, linear detection range, and the limit of detection for the ChOx/ZnO/FTO electrode are 3.01 mA-cm2-M-1, 1.1~4.83 mM, and 20 uM, respectively.

原文English
主出版物標題Olfaction and Electronic Nose - Proceedings of the 13th International Symposium on Olfaction and Electronic Nose, ISOEN
頁面123-126
頁數4
DOIs
出版狀態Published - 2009 十一月 27
事件13th International Symposium on Olfaction and Electronic Nose, ISOEN - Brescia, Italy
持續時間: 2009 四月 152009 四月 17

出版系列

名字AIP Conference Proceedings
1137
ISSN(列印)0094-243X
ISSN(電子)1551-7616

Other

Other13th International Symposium on Olfaction and Electronic Nose, ISOEN
國家Italy
城市Brescia
期間09-04-1509-04-17

    指紋

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

引用此

Lin, C-Y., & Ho, K. C. (2009). Cholesterol biosensor based on nanoporous zinc oxide modified electrodes. 於 Olfaction and Electronic Nose - Proceedings of the 13th International Symposium on Olfaction and Electronic Nose, ISOEN (頁 123-126). (AIP Conference Proceedings; 卷 1137). https://doi.org/10.1063/1.3156487