Screening metal nanoparticles using boron-doped diamond microelectrodes
- Department of Chemistry, FMIPA, Universitas Indonesia, Kampus UI Depok (Indonesia)
- Department of Chemistry, Faculty of Science and Technology, Keio University (Japan)
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.
- OSTI ID:
- 22606714
- Journal Information:
- AIP Conference Proceedings, Vol. 1729, Issue 1; Conference: ISCPMS 2015: 1. international symposium on current progress in mathematics and sciences, Depok (Indonesia), 3-4 Nov 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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