Non-enzymatic electrochemical CuO nanoflowers sensor for hydrogen peroxide detection.
The electrocatalytic activity of a CuO flower-like nanostructured electrode was investigated in terms of its application to enzyme-less amperometric H(2)O(2) sensors. The CuO nanoflowers film was directly formed by chemical oxidation of copper foil under hydrothermal condition and then used as active electrode material of non-enzymatic electrochemical sensors for H(2)O(2) detection under alkaline conditions. The sensitivity of the sensor with CuO nanoflowers electrode was 88.4 microA/mM cm(2) with a linear response in the range from 4.25 x 10(-5) to 4 x 10(-2)M and a detection limit of 0.167 microM (S/N=3). Excellent electrocatalytic activity, large surface-to-volume ratio and efficient electron transport property of CuO nanoflowers electrode have enabled stable and highly sensitive performance for the non-enzymatic H(2)O(2) sensor.
Research Center for Time-Domain Nano-Functional Devices, Korea University, Seoul 136-701, Republic of Korea.
Min-Jung
MJ
Song
Sung Woo
SW
Hwang
Dongmok
D
Whang
D003300:Copper / Q000737:chemistry*; D004563:Electrochemistry / Q000191:economics / Q000379:methods*; D004566:Electrodes; D006861:Hydrogen Peroxide / Q000032:analysis*; D057230:Limit of Detection; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D013499:Surface Properties
D003300:Copper; D006861:Hydrogen Peroxide; C030973:cupric oxide