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Preparation and Characterization of Pt Nanoparticles Inside Nanotubule TiO2

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Abstract:

Platinum nanoparticle has been supported on the tubular type titanium oxide using incipient wetness method employing H2PtCl6 as a precursor, where the loading was controlled to 4 wt%. The result of transmission electron micrographs of the sample showed the formation of Pt nanoparticles inside the tubule. The distribution of the particle size was found to be bimodal at ca. 1–2 nm and 5–6 nm, respectively. The former size was limited due to the inner diameter of the nanotubule. The particle size obtained from the hydrogen chemisorption, 1.24 H/Pt ratio was nearly 1 nm assuming spherical particle geometry, which was consistent with the formation of the Pt particle of 1–2 nm. The result suggested that there was no pore blockage for hydrogen since hydrogen can diffuse inside the channel through adsorption-diffusion-desorption on the Pt nanoparticle where the one dimensional channel was blocked with the particle itself.

Keywords: HYDROGEN CHEMISORPTION; PORE BLOCKAGE; PT NANOPARTICLES; TIO2 NANOTUBULE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2291

Publication date: May 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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