Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 168, Issue 3, Pages -Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1945-7111/abebad
Keywords
Cupric oxide; Non-enzymatic glucose sensor; Sphere structures
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CuO sphere structures synthesized via hydrothermal method show high sensitivity and good anti-interference ability to glucose, providing accurate and rapid detection of diabetes.
Cupric oxide (CuO) sphere structures by hydrothermal synthesis are investigated for non-enzymatic glucose sensors. Firstly, different CuO spheres are synthesized on ITO/glass substrates to analyze the catalytic ability to glucose. Copper acetate, copper nitrate trihydrate, and various amount of ammonia water are used to self-assemble CuO spheres. The experimental results indicate that by using precursor of copper nitrate trihydrate and 5 ml ammonia water, CuO spheres have high sensitivity of 2128.44 mu A mM(-1) cm(-2) to glucose. Besides, it has good linear range between 0.5-2.5 mM glucose concentration. The structure has more gaps between each nanoleaf and more reaction sites to react with glucose. Furthermore, the current variation of the working electrode after adding other interferences is negligible. It also has great anti-interference ability. Superior performances of the CuO spheres to glucose can help more accurately and quickly detecting diabetes.
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