|
|||||
|
|
Non-enzymatic electrochemical CuO nanoflowers sensor for hydrogen peroxide detection |
|
| Authors: | Min-Jung Song Sung Woo Hwang Dongmok Whang |
| Institution: | a Research Center for Time-Domain Nano-Functional Devices, Korea University, Seoul 136-701, Republic of Korea b School of Electrical Engineering, Korea University, Seoul 136-701, Republic of Korea c SKKU Advanced Institute of Nanotechnology and School of Advanced Materials Science & Engineering, Sungkyunkwan University, 300 Cheoncheon-Dong, Suwon 440-746, Republic of Korea |
| Abstract: | The electrocatalytic activity of a CuO flower-like nanostructured electrode was investigated in terms of its application to enzyme-less amperometric H2O2 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 H2O2 detection under alkaline conditions. The sensitivity of the sensor with CuO nanoflowers electrode was 88.4 μA/mM cm2 with a linear response in the range from 4.25 × 10−5 to 4 × 10−2 M and a detection limit of 0.167 μM (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 H2O2 sensor. |
| Keywords: | Electrochemical sensor Hydrogen peroxide sensor Non-enzymatic sensor Copper oxide nanoflower Effective surface area |
| 本文献已被 ScienceDirect 等数据库收录！ | |