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

fYear

2009

fDate

21-25 June 2009

Firstpage

228

Lastpage

231

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/SENSOR.2009.5285523

Filename

5285523