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Monolayers of platinum nanoparticles prepared by dip-coating
- 1.0473142 - ÚFE 2017 RIV CZ eng C - Conference Paper (international conference)
Černohorský, Ondřej - Grym, Jan - Yatskiv, Roman - Pham, V.H. - Hudry, D. - Dickerson, J.H.
Monolayers of platinum nanoparticles prepared by dip-coating.
NANOCON 2015: 7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION. Ostrava: Tanger Ltd; Czech Soc New Mat & Technologies; Reg Ctr Adv Technologies & Mat; Mat Res Soc Serbia; Norsk Materialteknisk Selskap, 2015, s. 73-78. ISBN 978-80-87294-63-5.
[7th International Conference on Nanomaterials - Research and Application. Brno (CZ), 14.10.2015-16.10.2015]
R&D Projects: GA ČR(CZ) GA15-17044S
Institutional support: RVO:67985882
Keywords : Oleylamine * Pt nanoparticles * Self-assembly
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering
Platinum is a transition metal known for its catalytic properties, which are further enhanced when employed in a nanoparticle form. We have recently shown that a monolayer of Pt nanoparticles deposited on semiconductor substrates forms high quality Schottky diodes, which were used in sensitive hydrogen sensors with a detection limit of 1 ppm of H-2 in N-2. Preparation of ordered monolayers of Pt nanoparticles is essential for the understanding of the behaviour of such an interface. To obtain a hexagonal closed-packed nanoparticle array, we prepared Pt nanoparticles stabilized by oleylamine and oleic acid with a narrow size distribution and uniform shapes. A monolayer prepared by dip-coating of Si substrate in the suspension containing Pt nanoparticles showed hexagonal arrangement within separate domains with the surface coverage up to 90%. The increase of the surface coverage with increasing withdrawal speed of the dip-coating process was observed
Permanent Link: http://hdl.handle.net/11104/0270310
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Number of the records: 1