Self-assembled isolated monodisperse NiO1+gamma nanoparticles as catalytic templates for nanomaterials synthesis
Self-assembled isolated monodisperse NiO1+gamma nanoparticles as catalytic templates for nanomaterials synthesis
Houweling, Z.; Geus, J.; Harks, P.; Heller, R.; Schropp, R.
We present the self-organization of isolated monodisperse nickel oxide (NiO1+gamma) nanoparticles on surfaces of arbitrary area sizes. Ni films deposited on titanium oxynitride support films are annealed in a nitrogen/air environment at atmospheric pressure for various annealing times. After the annealing treatments, randomly distributed spatially isolated NiO1+gamma, nanoparticles that are anchored to the support film are observed with a site-density of 11 +/- 1 mu m(-2) and with dimensions of 16 +/- 2 nm in height and 82 +/- 10 nm in diameter. The anchored nanoparticles, once formed, are immobile during further annealing, even for annealing times of 40 min or annealing temperatures of 800 degrees C, making the nanoparticle formation a well-controlled process that yields templates suitable for further processing at elevated temperatures. We demonstrate the utilization of these NiO1+gamma nanoparticle templates as nucleation sites for carbon nanotubes at temperatures of around 680 degrees C.
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- Ion Beam Center DOI: 10.17815/jlsrf-3-159
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- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 17733) publication
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Materials Chemistry and Physics 135(2012)1, 38-45
DOI: 10.1016/j.matchemphys.2012.03.084
ISSN: 0254-0584
Cited 2 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-17733