کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
596002 | 1454032 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new hydrogen peroxide biosensor based on gold nanoelectrode ensembles/multiwalled carbon nanotubes/chitosan film-modified electrode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
Gold nanoelectrode ensembles were produced by electrodeposition using multiwalled carbon nanotubes (MWNTs) as template. A new third generation amperometric biosensor for hydrogen peroxide was developed based on adsorption of horseradish peroxidase (HRP) at the glassy carbon (GC) electrode modified with Au nanoelectrode ensembles/multiwalled carbon nanotubes/chitosan film. The resulting HRP biosensor offered an excellent detection for hydrogen peroxide at â0.11Â V with a linear response range of 2.08Â ÃÂ 10â7 to 7.6Â ÃÂ 10â3Â M with a correlation coefficient of 0.998, and response time <5Â s. The detection limit was 1.02Â ÃÂ 10â7Â M at 3Ï. The biosensor displays rapid response, expanded linear response range, and excellent repeatability. The simple and fast fabrication of the sensor makes it superior to other techniques.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 340, Issues 1â3, 15 May 2009, Pages 50-55
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 340, Issues 1â3, 15 May 2009, Pages 50-55
نویسندگان
Yunhui Yang, Guangming Yang, Yan Huang, Huiping Bai, Xuxiao Lu,