Screening metal nanoparticles using boron-doped diamond microelectrodes
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2016-01-01 |
| Journal | AIP conference proceedings |
| Authors | Tribidasari A. Ivandini, Prasmita K. Rangkuti, Yasuaki Einaga |
| Institutions | University of Indonesia |
Abstract
Section titled âAbstractâBoron-doped diamond (BDD) microelectrodes were used to observe the correlation between electrocatalytic currents caused by individual Pt nanoparticle (Pt-np) collisions at the electrode. The BDD microelectrodes, âŒ20â ”m diameter and âŒ2â ”m particle size, were fabricated at the surface of tungsten wires. Pt-np with a size of 1 to 5â nm with agglomerations up to 20â nm was used for observation. The electrolytic currents were observed via catalytic reaction of 15â mM hydrazine in 50â mM phosphate buffer solution at Pt-np at 0.4â V when it collides with the surface of the microelectrodes. The low current noise and wider potential window in the measurements using BDD microelectrode produced a better results, which represents a better correlation to the TEM result of the Pt-np, compared to when gold microelectrodes was used.