Title :
Electrodeposited Pd/Ni/Si micro-channel plate electrode for hydrogen peroxide detection and application
Author :
Jing, Y.Z. ; Peng, B.B. ; Liu, Tiegen ; Wang, F. ; Wang, L.W. ; Chu, Paul K.
Author_Institution :
Dept. of Electron. Eng., East China Normal Univ., Shanghai, China
Abstract :
A novel method to construct a sensitive amperometric sensor for hydrogen peroxide (H2O2) is described. It is composed of highly dispersed palladium nanoparticles on a vertically aligned nickel-coated silicon micro-channel plate (MCP). The morphology of the Pd/Ni/Si-MCP electrode is characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrode with a three-dimensional structure shows high-catalytic activity towards oxidation of H2O2 in a 0.10 M KOH solution. The electrode boasts a high sensitivity of 0.86 mAmM-1cm-2 at an applied potential of 0.12V, and the detection limit is 7.6μM. The linear range is up to 12.5mA with a linear correlation of 0.99923. In addition, the electrode also exhibits superior stability, anti-interference, and selectivity. These features demonstrate the Pd/Ni/Si-MCP electrode is suitable for detection of H2O2.
Keywords :
X-ray diffraction; catalysts; chemical sensors; electrodeposition; electrodes; microchannel plates; nickel; palladium; scanning electron microscopy; silicon; H2O2; Pd-Ni-Si; SEM; X-ray diffraction; XRD; current 12.5 mA; electrodeposited nickel-coated silicon microchannel plate electrode; high-catalytic activity; highly dispersed palladium nanoparticles; hydrogen peroxide detection; scanning electron microscopy; sensitive amperometric sensor; three-dimensional structure; voltage 0.12 V; Electrodes; Hydrogen; Nanoparticles; Nickel; Oxidation; Silicon;
Conference_Titel :
Sensors, 2012 IEEE
Conference_Location :
Taipei
Print_ISBN :
978-1-4577-1766-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2012.6411056
