Abstract
In this study, the process of heterogeneous nucleation is investigated by coupling a high-resolution differential mobility analyser (DMA) to an expansion-type condensation particle counter, the size-analyzing nuclei counter (SANC). More specifically, we measured the activation probabilities of monoatomic ions of both polarities by using n-butanol as condensing liquid. All seed ions were activated to grow into macroscopic sizes at saturation ratios well below the onset of homogeneous nucleation, showing for the first time that the SANC is capable of detecting sub-nanometer sized, atomic seed ions. The measured onset saturation ratios for each ion were compared to the Kelvin-Thomson (KT) theory. Despite the fact that certain dependencies of activation behaviour on seed ion properties cannot be predicted by the KT theory, it was found that with a simple adjustment of the n-butanol molecular volume (9–15 % lower compared to bulk properties) good agreement with experimental results is achievable. The corresponding density increase may result from the dipole-charge interaction. This study thus offers support for the application of the KT model for heterogeneous, ion-induced nucleation studies at the sub-nanometer level.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3144-3149 |
| Number of pages | 6 |
| Journal | ChemPhysChem |
| Volume | 19 |
| Issue number | 22 |
| DOIs | |
| State | Published - Nov 19 2018 |
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Keywords
- Kelvin-Thomson Theory
- atomic ions
- heterogeneous nucleation
- ion-induced nucleation
- n-butanol
PubMed: MeSH publication types
- Journal Article
- Research Support, Non-U.S. Gov't
Cite this
Heterogeneous Nucleation onto Monoatomic Ions : Support for the Kelvin-Thomson Theory. / Tauber, Christian; Chen, Xiaoshuang; Wagner, Paul E.; Winkler, Paul M.; Hogan, Christopher J.; Maißer, Anne.
In: ChemPhysChem, Vol. 19, No. 22, 19.11.2018, p. 3144-3149.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heterogeneous Nucleation onto Monoatomic Ions
T2 - Support for the Kelvin-Thomson Theory
AU - Tauber, Christian
AU - Chen, Xiaoshuang
AU - Wagner, Paul E.
AU - Winkler, Paul M.
AU - Hogan, Christopher J.
AU - Maißer, Anne
PY - 2018/11/19
Y1 - 2018/11/19
N2 - In this study, the process of heterogeneous nucleation is investigated by coupling a high-resolution differential mobility analyser (DMA) to an expansion-type condensation particle counter, the size-analyzing nuclei counter (SANC). More specifically, we measured the activation probabilities of monoatomic ions of both polarities by using n-butanol as condensing liquid. All seed ions were activated to grow into macroscopic sizes at saturation ratios well below the onset of homogeneous nucleation, showing for the first time that the SANC is capable of detecting sub-nanometer sized, atomic seed ions. The measured onset saturation ratios for each ion were compared to the Kelvin-Thomson (KT) theory. Despite the fact that certain dependencies of activation behaviour on seed ion properties cannot be predicted by the KT theory, it was found that with a simple adjustment of the n-butanol molecular volume (9–15 % lower compared to bulk properties) good agreement with experimental results is achievable. The corresponding density increase may result from the dipole-charge interaction. This study thus offers support for the application of the KT model for heterogeneous, ion-induced nucleation studies at the sub-nanometer level.
AB - In this study, the process of heterogeneous nucleation is investigated by coupling a high-resolution differential mobility analyser (DMA) to an expansion-type condensation particle counter, the size-analyzing nuclei counter (SANC). More specifically, we measured the activation probabilities of monoatomic ions of both polarities by using n-butanol as condensing liquid. All seed ions were activated to grow into macroscopic sizes at saturation ratios well below the onset of homogeneous nucleation, showing for the first time that the SANC is capable of detecting sub-nanometer sized, atomic seed ions. The measured onset saturation ratios for each ion were compared to the Kelvin-Thomson (KT) theory. Despite the fact that certain dependencies of activation behaviour on seed ion properties cannot be predicted by the KT theory, it was found that with a simple adjustment of the n-butanol molecular volume (9–15 % lower compared to bulk properties) good agreement with experimental results is achievable. The corresponding density increase may result from the dipole-charge interaction. This study thus offers support for the application of the KT model for heterogeneous, ion-induced nucleation studies at the sub-nanometer level.
KW - Kelvin-Thomson Theory
KW - atomic ions
KW - heterogeneous nucleation
KW - ion-induced nucleation
KW - n-butanol
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UR - http://www.scopus.com/inward/citedby.url?scp=85054861183&partnerID=8YFLogxK
U2 - 10.1002/cphc.201800698
DO - 10.1002/cphc.201800698
M3 - Article
C2 - 30238689
AN - SCOPUS:85054861183
VL - 19
SP - 3144
EP - 3149
JO - ChemPhysChem
JF - ChemPhysChem
SN - 1439-4235
IS - 22
ER -