Abstract
Titanium-containing MCM-41 (Ti-MCM-41) modified glassy carbon electrode (GCE) can exhibit an excellent electrocatalytic activity towards the oxidation of β-Nicotinamide adenine dinucleotide (NADH). A dramatic decrease in the overvoltage of NADH oxidation reaction is observed at 0.28 V vs. SCE. The application in the amperometric biosensing of ethanol using alcohol dehydrogenase enzyme (ADH) also has been demonstrated with this material. The proposed sensor shows a highly sensitivity, an acceptable reproducibility and a good stability. The linear range of ethanol is 25-1000 μM and the detection limit is 8.0 μM. Ti-MCM-41 modified electrode not only can be used to detect the concentration of NADH in biochemical reaction, but also as the potential matrix for the construction of dehydrogenases sensor.
Original language | English |
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Pages (from-to) | 1591-1596 |
Number of pages | 6 |
Journal | Electroanalysis |
Volume | 19 |
Issue number | 15 |
DOIs | |
State | Published - Aug 2007 |
Externally published | Yes |
Keywords
- ADH
- Electrocatalytic
- Ethanol
- NADH
- Sensors
- Ti-MCM-41