Screening metal nanoparticles using boron-doped diamond microelectrodes

Tribidasari A. Ivandini, Prasmita K. Rangkuti, Yasuaki Einaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationInternational Symposium on Current Progress in Mathematics and Sciences 2015, ISCPMS 2015: Proceedings of the 1st International Symposium on Current Progress in Mathematics and Sciences
PublisherAmerican Institute of Physics Inc.
Volume1729
ISBN (Electronic)9780735413764
DOIs
Publication statusPublished - 2016 Apr 19
Event1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015 - Depok, Indonesia
Duration: 2015 Nov 32015 Nov 4

Other

Other1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015
CountryIndonesia
CityDepok
Period15/11/315/11/4

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ivandini, T. A., Rangkuti, P. K., & Einaga, Y. (2016). Screening metal nanoparticles using boron-doped diamond microelectrodes. In International Symposium on Current Progress in Mathematics and Sciences 2015, ISCPMS 2015: Proceedings of the 1st International Symposium on Current Progress in Mathematics and Sciences (Vol. 1729). [020041] American Institute of Physics Inc.. https://doi.org/10.1063/1.4946944