کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7141803 1462035 2018 36 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cobalt nitride nanowire array as an efficient electrochemical sensor for glucose and H2O2 detection
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Cobalt nitride nanowire array as an efficient electrochemical sensor for glucose and H2O2 detection
چکیده انگلیسی
It is highly attractive to develop non-noble-metal nanoarray architecture as a high-active catalyst electrode for molecular detection due to its large specific surface area and easy accessibility to target molecules. In this paper, we demonstrate the development of cobalt nitride nanowire array on Ti mesh (Co3N NW/TM) as an efficient catalyst electrode for glucose oxidation in alkaline solutions and H2O2 reduction in neutral solutions. Electrochemical tests suggest that such Co3N NW/TM possesses superior non-enzymatic sensing ability toward rapid glucose and H2O2 detection. As a glucose sensor, this fabricated electrode offers a high sensitivity of 3325.6 μA mM−1 cm−2, with a wide linear range from 0.1 μM to 2.5 mM, a low detection limit of 50 nM (S/N = 3), and satisfactory stability and reproducibility. Its application in determining glucose in human blood serum is also successful. Amperometric H2O2 sensing can also been realized with a sensitivity of 139.9 μA mM−1 cm−2, a linear range from 2 μM to 28 mM, and a detection limit of 1 μM (S/N = 3). This nanoarray architecture holds great promise as an attractive sensing platform toward electrochemical small molecules detection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 255, Part 2, February 2018, Pages 1254-1261
نویسندگان
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