Enhancement of Electrochemical Glucose Sensing by Using Multiwall Carbon Nanotubes decorated with Iron Oxide Nanoparticles

被引：14
|
作者：
Uc-Cayetano, E. G. [1 ]
Ordonez, L. C. [2 ]
Cauich-Rodriguez, J. V. [1 ]
Aviles, F. [1 ]
机构：
[1] Ctr Invest Cient Yucatan, Unidad Mat, Calle 43 130, Merida 97200, Yucatan, Mexico
[2] Ctr Invest Cient Yucatan, Unidad Energia Renovable, Carretera Sierra Papacal Chuburna Puerto Km 5, Sierra Papacal 97302, Yucatan, Mexico
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2016年 / 11卷 / 07期
关键词：
Carbon nanotubes; iron oxide; glucose sensing; DIRECT ELECTRON-TRANSFER; PLATINUM NANOPARTICLES; GOLD NANOPARTICLE; BIOSENSOR; IMMOBILIZATION; FILM;
D O I：
10.20964/2016.07.85
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The influence of iron oxide nanoparticles decorating the external surface of multiwall carbon nanotubes (MWCNTs) on the amperometric sensing of glucose in solution is investigated. Oxidized nanotubes are decorated with iron oxide nanoparticles and then glucose oxidase is chemically bound to the MWCNTs for glucose sensing within physiological levels. MWCNTs which are only oxidized (without decorating nanoparticles) are used as reference. The results of the electrochemical characterizations consistently show that the presence of iron oxide nanoparticles decorating the surface of MWCNTs enhance the amperometric response and the sensitivity to increments in glucose concentration, when compared to non-decorated MWCNTs. The biosensor containing iron oxide decorated nanoparticles showed an amperometric sensitivity of 4.75 mu A/mMcm(2) and an average response time of 6.6 s.
引用
收藏
页码：6356 / 6369
页数：14
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