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General Approach to the Evolution of Singlet Nanoparticles from a Rapidly Quenched Point Source

Feng, Jicheng; Huang, Luyi; Ludvigsson, Linus LU ; Messing, Maria LU ; Maisser, Anne; Biskos, George and Schmidt-Ott, Andreas (2016) In Journal of Physical Chemistry C 120(1). p.621-630
Abstract
Among the numerous point vapor sources, microsecond-pulsed spark ablation at atmospheric pressure is a versatile and environmentally friendly method for producing ultrapure inorganic nanoparticles ranging from singlets having sizes smaller than 1 nm to larger agglomerated structures. Due to its fast quenching and extremely high supersaturation, coagulational growth already begins at the atomic scale at room temperature. On the basis of this knowledge, we develop a simple semiempirical yet versatile model for predicting the size distribution of singlet particles as a function of the process conditions. The model assumes that a plume of a turbulent aerosol flow flares out from a concentrated point source, eventually reaching the walls of the... (More)
Among the numerous point vapor sources, microsecond-pulsed spark ablation at atmospheric pressure is a versatile and environmentally friendly method for producing ultrapure inorganic nanoparticles ranging from singlets having sizes smaller than 1 nm to larger agglomerated structures. Due to its fast quenching and extremely high supersaturation, coagulational growth already begins at the atomic scale at room temperature. On the basis of this knowledge, we develop a simple semiempirical yet versatile model for predicting the size distribution of singlet particles as a function of the process conditions. The model assumes that a plume of a turbulent aerosol flow flares out from a concentrated point source, eventually reaching the walls of the confinement where a fraction of the particles is deposited. Despite the complexity of the entire process, the concentration and size evolution of particles can be adequately described by a first-order differential equation accounting for coagulation, turbulent dilution, and diffusional deposition to the walls. The model provides a simple and practical tool that can generally be used to design and control point vapor source reactors for the synthesis of singlets with tunable sizes starting from that of single atoms. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
120
issue
1
pages
621 - 630
publisher
The American Chemical Society
external identifiers
  • wos:000368562200074
  • scopus:84954419216
ISSN
1932-7447
DOI
10.1021/acs.jpcc.5b06503
language
English
LU publication?
yes
id
002e111d-21ca-4472-940b-ee8028c4329c (old id 8731565)
date added to LUP
2016-02-26 12:39:00
date last changed
2017-04-23 03:03:03
@article{002e111d-21ca-4472-940b-ee8028c4329c,
  abstract     = {Among the numerous point vapor sources, microsecond-pulsed spark ablation at atmospheric pressure is a versatile and environmentally friendly method for producing ultrapure inorganic nanoparticles ranging from singlets having sizes smaller than 1 nm to larger agglomerated structures. Due to its fast quenching and extremely high supersaturation, coagulational growth already begins at the atomic scale at room temperature. On the basis of this knowledge, we develop a simple semiempirical yet versatile model for predicting the size distribution of singlet particles as a function of the process conditions. The model assumes that a plume of a turbulent aerosol flow flares out from a concentrated point source, eventually reaching the walls of the confinement where a fraction of the particles is deposited. Despite the complexity of the entire process, the concentration and size evolution of particles can be adequately described by a first-order differential equation accounting for coagulation, turbulent dilution, and diffusional deposition to the walls. The model provides a simple and practical tool that can generally be used to design and control point vapor source reactors for the synthesis of singlets with tunable sizes starting from that of single atoms.},
  author       = {Feng, Jicheng and Huang, Luyi and Ludvigsson, Linus and Messing, Maria and Maisser, Anne and Biskos, George and Schmidt-Ott, Andreas},
  issn         = {1932-7447},
  language     = {eng},
  number       = {1},
  pages        = {621--630},
  publisher    = {The American Chemical Society},
  series       = {Journal of Physical Chemistry C},
  title        = {General Approach to the Evolution of Singlet Nanoparticles from a Rapidly Quenched Point Source},
  url          = {http://dx.doi.org/10.1021/acs.jpcc.5b06503},
  volume       = {120},
  year         = {2016},
}