کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10429745 | 909863 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical study of a new methylene blue/silicon oxide nanocomposition mediator and its application for stable biosensor of hydrogen peroxide
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A novel organic-inorganic nanocomposite of methylene blue (MB) and silicon oxide was synthesized and characterized by TEM, FTIR, and UV-vis. The as-prepared material was able to transfer the electron of the MB to electrode and was different from other SiO2 spheres structurally. It can be used as mediator to construct a biosensor with horseradish peroxidase (HRP) coimmobilized in the gelatine matrix and cross-linked with formaldehyde. The resulting biosensor exhibited fast amperometric response and good stability to hydrogen peroxide (H2O2). The linear range for H2O2 determination was from 1 Ã 10â5 to 1.2 Ã 10â3 M, with a detection limit of 4 Ã 10â6 M based on S/N = 3. Moreover, the lifetime is more than 3 months under dry conditions at 4 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 21, Issue 2, 15 August 2005, Pages 372-377
Journal: Biosensors and Bioelectronics - Volume 21, Issue 2, 15 August 2005, Pages 372-377
نویسندگان
Hui Yao, Nan Li, Shu Xu, Jin-Zhong Xu, Jun-Jie Zhu, Hong-Yuan Chen,