Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10560078 | Talanta | 2005 | 6 Pages |
Abstract
Direct electrochemistry of hemoglobin (Hb) is observed at carbon nanotube (CNT) interface. The adsorbing Hb can transfer electron directly at CNT interface compared with common carbon material. The heterogeneous electron transfer rate constant k of Hb can be calculated as 0.062 sâ1, the transfer coefficient α is 0.21 and the average surface coverage of Hb on CNT surface is 3.58 à 10â9 ± 2.7 à 10â10 mol/cm2. It is found that the adsorbing Hb still keeps its catalytic activity to H2O2. This sensor was used to detect H2O2. The apparent Michaelis-Menten constant is calculated as 6.75 à 10â4 mol Lâ1.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yuan-Di Zhao, Yan-Hua Bi, Wei-De Zhang, Qing-Ming Luo,