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Title: Screening Metal Nanoparticles Using Boron-Doped Diamond Microelectrodes
Authors: Tribidasari, Ivandini A.
Rangkuti, Prasmita K.
Einaga, Yasuaki
Issue Date: 3-Nov-2015
Publisher: AIP Publishing
Series/Report no.: Volume 1729;
Abstract: Boron-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, ~20 μm diameter and ~2 μm particle size, were fabricated at the surface of tungsten wires. Pt-np with a size of 1 to 5 nm with agglomerations up to 20 nm was used for observation. The electrolytic currents were observed via catalytic reaction of 15 mM hydrazine in 50 mM phosphate buffer solution at Pt-np at 0.4 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.
ISBN: 978-0-7354-1376-4
Appears in Collections:Proceedings Collection

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