Nonenzymatic glucose detection using multi-walled carbon nanotube electrodes
Nonenzymatic glucose detection using multi-walled carbon nanotube electrodes
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DOI：
10.1016/j.elecom.2003.10.013
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发表时间：
2004
影响因子：
5.4
通讯作者：
Jianshan Ye;Y. Wen;W. Zhang;L. Gan;G. Xu;F. Sheu
中科院分区：
文献类型：
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作者：
Jianshan Ye;Y. Wen;W. Zhang;L. Gan;G. Xu;F. Sheu
研究了碱性介质中葡萄糖在定向多壁碳纳米管电极上的电催化氧化。与玻碳电极相比，在MWNTs电极上观察到葡萄糖氧化反应的过电压显著降低（+400 mV），氧化开始于约100 ℃。+0.10 V（vs. 3 M KCl-Ag| AgCl）。的电催化作用主要是由于碳纳米管与可能的微小贡献，从钴催化剂存在于钽基板上。在+0.20 V的外加电位下，MWNTs电极在高浓度氯离子存在下给出了4.36 μA cm− 2 mM − 1的高且可重复的灵敏度。因此，良好排列的多壁碳纳米管电极允许高灵敏度，低电位，稳定，和快速的安培传感葡萄糖，有希望的非酶葡萄糖传感器的发展。
The electrocatalytic oxidation of glucose in alkaline medium directly at well-aligned multi-wall carbon nanotubes (MWNTs) electrodes has been investigated in the present study. Compared to glassy carbon electrode, a substantial (+400 mV) decrease in the overvoltage of the glucose oxidation reaction was observed at MWNTs electrodes with oxidation starting at ca. +0.10 V (vs. 3 M KCl–Ag|AgCl). The electrocatalytic effect is mainly attributed to carbon nanotubes with possible minor contributions from the Co catalysts present on the Ta substrate. At an applied potential of +0.20 V, MWNTs electrodes give a high and reproducible sensitivity of 4.36 μA cm−2mM−1in the presence of high concentration of chloride ion. The well-aligned MWNTs electrode thus allows highly sensitive, low-potential, stable, and fast amperometric sensing of glucose, promising for the development of nonenzymatic glucose sensors.