Improvement in Sensitivity of Electrochemical Glucose Biosensor Based on CuO/Au@MWCNTs Nanocomposites | Zendy

Mi-Seon Park | Zendy; TaeSung Bae | Zendy; YoungSeak Lee | Zendy

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Improvement in Sensitivity of Electrochemical Glucose Biosensor Based on CuO/Au@MWCNTs Nanocomposites

Author(s) -

Mi-Seon Park,

TaeSung Bae,

YoungSeak Lee

Publication year - 2016

Publication title -

applied chemistry for engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.144

H-Index - 11

eISSN - 2288-4505

pISSN - 1225-0112

DOI - 10.14478/ace.2015.1117

Subject(s) - nanocomposite , detection limit , biosensor , materials science , electrochemistry , linear range , carbon nanotube , nanoparticle , electrode , nanotechnology , chemical engineering , nuclear chemistry , chemistry , chromatography , engineering

In this study, CuO was introduced on MWCNTs dispersed with Au nanoparticles to improve the glucose sensing capability of electrochemical biosensors. Nano-cluster shaped CuO was synthesized due to the presence of Au nanoparticle, which affects glu- cose sensing performance. The biosensor featuring CuO/Au@MWCNTs nanocomposite as an electrode material when 0.1 mole of CuO was synthesized showed the highest sensitivity of 504.1 µA mM -1 cm -2 , which is 4 times better than that of MWCNTs based biosensors. In addition, it shows a wider linear range from 0 to 10 mM and lower limit of detection (LOD) of 0.008 mM. These results demonstrate that CuO/Au@MWCNTs nanocomposite sensors are superior to other CuO based biosensors which are attributed that the nano-cluster shaped CuO is favorable for the electrochemical reaction with glucose molecules.

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