| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 봄 (04/25 ~ 04/27, 제주 ICC) |
| 권호 |
18권 1호, p.473 |
| 발표분야 |
생물화공 |
| 제목 |
Synthesis of ZnO nanotube on Si/Ag Substrate as Biosensors for Cholesterol |
| 초록 |
ZnO nanotube (ZNT) arrays were synthesized by a one-step chemical process on Si/Ag substrate in an aqueous solution. Morphology and structure of ZnO nanotubes are characterized by FESEM, HRTEM and XRD. The prepared ZNT arrays were further used as a working electrode to fabricate an enzyme-based cholesterol biosensor through immobilizing cholesterol oxidase (ChOx). The fabricated biosensor exhibits high and reproducible sensitivity of 79.40 μA cm-2 mM-1, wide linear range from 1.0 μM to 13.0 mM, response time ~ 2 s, and a low detection limit of 0.5 nM (S/N = 3), for sensing of cholesterol. The anti-interference ability and long-term stability of the biosensor are also assessed. Compared with the biosensors based on the nanorods and flat structure, the proposed biosensor shows expanded linear range and sensitivity. All these results demonstrate that ZnO nanotube can provide a promising material for the biosensor designs. |
| 저자 |
Ahmad Rafiq1, Nirmalya Tripathy2, 한윤봉1
|
| 소속 |
1전북대, 2CBNU Department of BIN Fusion Technology |
| 키워드 |
ZnO nanotube; Cholesterol Oxidase; Solution Process
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| E-Mail |
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| 원문파일 |
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