Original title: Monolayers of platinum nanoparticles prepared by dip-coating
Authors: Černohorský, Ondřej ; Grym, Jan ; Yatskiv, Roman ; Pham, V.H. ; Hudry, D. ; Dickerson, J.H.
Document type: Papers
Conference/Event: 7th International Conference on Nanomaterials - Research and Application, Brno (CZ), 20151014
Year: 2015
Language: eng
Abstract: 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
Keywords: Oleylamine; Pt nanoparticles; Self-assembly
Project no.: GA15-17044S (CEP)
Funding provider: GA ČR
Host item entry: NANOCON 2015: 7TH INTERNATIONAL CONFERENCE ON NANOMATERIALS - RESEARCH & APPLICATION, ISBN 978-80-87294-63-5

Institution: Institute of Photonics and Electronics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0270310

Permalink: http://www.nusl.cz/ntk/nusl-263586


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Research > Institutes ASCR > Institute of Photonics and Electronics
Conference materials > Papers