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Evaluation of the change in the morphology of gold nanoparticles during sintering

Nakaso, K; Shimada, M; Okuyama, K and Deppert, Knut LU (2002) In Journal of Aerosol Science 33(7). p.1061-1074
Abstract
Morphological changes of agglomerates consisting of nanometer primary gold particles were studied experimentally and theoretically. Gold aerosol nanoparticles were produced using the evaporation/condensation method, and the change in agglomerate size by reheating was examined experimentally using a tandem DMA setup. Numerical calculations, based on two extreme mechanisms to reshape agglomerates, i.e., subsequent coalescence of primary particles and subsequent rearrangement of primary particles, were carried out. By comparison with the experimental results, the sintering time and the rate constant of restructuring were obtained. Using these values, the change in particle size for different generation conditions could be calculated. The... (More)
Morphological changes of agglomerates consisting of nanometer primary gold particles were studied experimentally and theoretically. Gold aerosol nanoparticles were produced using the evaporation/condensation method, and the change in agglomerate size by reheating was examined experimentally using a tandem DMA setup. Numerical calculations, based on two extreme mechanisms to reshape agglomerates, i.e., subsequent coalescence of primary particles and subsequent rearrangement of primary particles, were carried out. By comparison with the experimental results, the sintering time and the rate constant of restructuring were obtained. Using these values, the change in particle size for different generation conditions could be calculated. The change in morphology of agglomerates can be explained from the comparison of the experimental results with the theoretical calculations: agglomerates with smaller primary particles will compact mainly by the subsequent coalescence of primary particles, while agglomerates with larger primary particles will compact mainly by a rearrangement of primary particles. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
primary, agglomerate, sintering, morphology change, nanoparticle, gold, particle, evaporation/condensation method
in
Journal of Aerosol Science
volume
33
issue
7
pages
1061 - 1074
publisher
Elsevier
external identifiers
  • wos:000176957800007
  • scopus:0036284394
ISSN
0021-8502
DOI
10.1016/S0021-8502(02)00058-7
language
English
LU publication?
yes
id
a6034f20-7106-40eb-abc2-ae3fb861cecd (old id 332702)
date added to LUP
2007-11-19 16:56:00
date last changed
2017-09-10 04:31:44
@article{a6034f20-7106-40eb-abc2-ae3fb861cecd,
  abstract     = {Morphological changes of agglomerates consisting of nanometer primary gold particles were studied experimentally and theoretically. Gold aerosol nanoparticles were produced using the evaporation/condensation method, and the change in agglomerate size by reheating was examined experimentally using a tandem DMA setup. Numerical calculations, based on two extreme mechanisms to reshape agglomerates, i.e., subsequent coalescence of primary particles and subsequent rearrangement of primary particles, were carried out. By comparison with the experimental results, the sintering time and the rate constant of restructuring were obtained. Using these values, the change in particle size for different generation conditions could be calculated. The change in morphology of agglomerates can be explained from the comparison of the experimental results with the theoretical calculations: agglomerates with smaller primary particles will compact mainly by the subsequent coalescence of primary particles, while agglomerates with larger primary particles will compact mainly by a rearrangement of primary particles.},
  author       = {Nakaso, K and Shimada, M and Okuyama, K and Deppert, Knut},
  issn         = {0021-8502},
  keyword      = {primary,agglomerate,sintering,morphology change,nanoparticle,gold,particle,evaporation/condensation method},
  language     = {eng},
  number       = {7},
  pages        = {1061--1074},
  publisher    = {Elsevier},
  series       = {Journal of Aerosol Science},
  title        = {Evaluation of the change in the morphology of gold nanoparticles during sintering},
  url          = {http://dx.doi.org/10.1016/S0021-8502(02)00058-7},
  volume       = {33},
  year         = {2002},
}