Glucose biosensor based on a platinum electrode modified with rhodium nanoparticles and with glucose oxidase immobilized on gold nanoparticles

被引：29

作者：

Guo, Xishan ^{[1
]}

Liang, Bo ^{[2
]}

Jian, Jinming ^{[1
]}

Zhang, Yelei ^{[3
]}

Ye, Xuesong ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Biosyst Engn, Hangzhou 310058, Zhejiang, Peoples R China

[2] Zhejiang Univ, Coll Biomed Engn & Instrument Sci, Biosensor Natl Special Lab, Hangzhou 310027, Zhejiang, Peoples R China

[3] Linyi Univ, Linyi 276005, Shandong, Peoples R China

来源：

MICROCHIMICA ACTA | 2014年 / 181卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

Blood glucose; Biosensor; Rh nanoparticle; Gold nanoparticle; Nafion; FILM; CHITOSAN; LAYER;

D O I：

10.1007/s00604-013-1143-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have developed an enzymatic glucose biosensor that is based on a flat platinum electrode which was covered with electrophoretically deposited rhodium (Rh) nanoparticles and then sintered to form a large surface area. The biosensor was obtained by depositing glucose oxidase (GOx), Nafion, and gold nanoparticles (AuNPs) on the Rh electrode. The electrical potential and the fractions of Nafion and GOx were optimized. The resulting biosensor has a very high sensitivity (68.1 mu A mM(-1) cm(-2)) and good linearity in the range from 0.05 to 15 mM (r = 0.989). The limit of detection is as low as 0.03 mM (at an SNR of 3). The glucose biosensor also is quite selective and is not interfered by electroactive substances including ascorbic acid, uric acid and acetaminophen. The lifespan is up to 90 days. It was applied to the determination of glucose in blood serum, and the results compare very well with those obtained with a clinical analyzer.

引用

页码：519 / 525

页数：7

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