Electrodeposited Gold Nanoparticles Modified Screen Printed Carbon Electrode for Enzyme-Free Glucose Sensor Application

Authors: Nguyen, Xuan Viet
Yuzuru, Takamura

An enzyme-free glucose sensor has been developed based on electrodeposited gold nanoparticles modified screen-printed carbon electrode (SPCE). The combination of electrodeposited gold nanoparticles and SPCE, makesthe device compact, low cost, and reliable enzyme-free glucose sensor. Gold nanoparticles weredirectly synthesized via electrochemical deposition method on carbon surface from HAuCl 4solution. The gold nanoparticles electrodeposited on the surface of SPCE was observed by SEM. The gold nanoparticles modified SPCE were successfully used for the sensing of glucose. This enzyme free sensor showed wide linear range with the glucose concentration from 0.5 ÷ 8.5 mM and sensitivity 9.12 µA/mA.cm 2with a limit of detection of 200 µM...

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