Title :
Development of highly roughened porous Au electrode with Pt nano-particle for electrochemical sensor applications
Author :
Kim, J.D. ; Lee, Y.J. ; Park, J.Y. ; Kim, H. ; Kim, Y.
Author_Institution :
Dept. of Electron. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
Highly roughened coral-like porous Au electrode with electroplated Pt nano-particles was newly developed and characterized. The porosity and window-pore size of the fabricated porous Au electrode were approximately 50% and 100-300 nm, respectively. The electroplated Pt nano-particle size was approximately 5-10 nm. For miniaturized electrochemical and biochemical sensor applications, the fabricated Au-Pt nano-electrode was characterized in sulfuric acid and H2O2 solutions. It showed extremely large sensitivity of 0.166 mA/mMmiddotcm2, excellent linearity of 0.989, and surface roughness factor of 488, which were the highest values in the previously reported ones.
Keywords :
biosensors; electrochemical electrodes; electrochemical sensors; electroplated coatings; electroplating; gold alloys; nanoparticles; nanoporous materials; particle size; platinum; porosity; surface roughness; Au-Pt; biochemical sensor; electrochemical sensor; electroplated platinum nanoparticle; highly roughened coral-like porous gold electrode; nano particle size; porosity; size 100 nm to 300 nm; sulfuric acid; surface roughness factor; Aluminum; Chemical sensors; Electrodes; Etching; Gold; Hydrogen; Nanoporous materials; Rough surfaces; Sensor phenomena and characterization; Surface roughness; Hydrogen Peroxide (H2O2); Porous Au; Pt Nano-particle; Roughness Factor;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4244-4190-7
Electronic_ISBN :
978-1-4244-4193-8
DOI :
10.1109/SENSOR.2009.5285523
