Three-body collisions as a particle formation mechanism in silver nanoparticle synthesis

Kari E.J. Lehtinen (Corresponding Author), Ulrika Backman, Jorma K. Jokiniemi, Markku Kulmala

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

Silver nanoparticles were prepared in a tubular flow reactor using an evaporation–condensation technique. The size distribution of the particles was measured using standard aerosol instruments and electron microscopy. A comparison with results obtained by a discrete population balance model with molecule-by-molecule resolution suggest that the particles probably nucleate kinetically through a dimerization process instead of a thermodynamic pathway over a free energy barrier, as is typically described by classical nucleation theory. Furthermore, the kinetic rate of dimerization seems to be accompanied by a correction term, associated with the requirement of energy and momentum conservation in molecule–molecule collisions. This energy conservation requires the presence of three-body collisions at the very initial step of particle formation.

Original languageEnglish
Pages (from-to)526-530
JournalJournal of Colloid and Interface Science
Volume274
Issue number2
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

Fingerprint

Dimerization
Silver
Nanoparticles
Molecules
Energy barriers
Aerosols
Electron microscopy
Particles (particulate matter)
Free energy
Conservation
Momentum
Energy conservation
Nucleation
Thermodynamics
Kinetics

Keywords

  • silver
  • nanoparticles
  • nucleation
  • formation
  • collisions
  • evaporation-condensation

Cite this

Lehtinen, Kari E.J. ; Backman, Ulrika ; Jokiniemi, Jorma K. ; Kulmala, Markku. / Three-body collisions as a particle formation mechanism in silver nanoparticle synthesis. In: Journal of Colloid and Interface Science. 2004 ; Vol. 274, No. 2. pp. 526-530.
@article{264af79383aa43af9f383aa0deb18d9b,
title = "Three-body collisions as a particle formation mechanism in silver nanoparticle synthesis",
abstract = "Silver nanoparticles were prepared in a tubular flow reactor using an evaporation–condensation technique. The size distribution of the particles was measured using standard aerosol instruments and electron microscopy. A comparison with results obtained by a discrete population balance model with molecule-by-molecule resolution suggest that the particles probably nucleate kinetically through a dimerization process instead of a thermodynamic pathway over a free energy barrier, as is typically described by classical nucleation theory. Furthermore, the kinetic rate of dimerization seems to be accompanied by a correction term, associated with the requirement of energy and momentum conservation in molecule–molecule collisions. This energy conservation requires the presence of three-body collisions at the very initial step of particle formation.",
keywords = "silver, nanoparticles, nucleation, formation, collisions, evaporation-condensation",
author = "Lehtinen, {Kari E.J.} and Ulrika Backman and Jokiniemi, {Jorma K.} and Markku Kulmala",
year = "2004",
doi = "10.1016/j.jcis.2004.01.023",
language = "English",
volume = "274",
pages = "526--530",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Elsevier",
number = "2",

}

Three-body collisions as a particle formation mechanism in silver nanoparticle synthesis. / Lehtinen, Kari E.J. (Corresponding Author); Backman, Ulrika; Jokiniemi, Jorma K.; Kulmala, Markku.

In: Journal of Colloid and Interface Science, Vol. 274, No. 2, 2004, p. 526-530.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Three-body collisions as a particle formation mechanism in silver nanoparticle synthesis

AU - Lehtinen, Kari E.J.

AU - Backman, Ulrika

AU - Jokiniemi, Jorma K.

AU - Kulmala, Markku

PY - 2004

Y1 - 2004

N2 - Silver nanoparticles were prepared in a tubular flow reactor using an evaporation–condensation technique. The size distribution of the particles was measured using standard aerosol instruments and electron microscopy. A comparison with results obtained by a discrete population balance model with molecule-by-molecule resolution suggest that the particles probably nucleate kinetically through a dimerization process instead of a thermodynamic pathway over a free energy barrier, as is typically described by classical nucleation theory. Furthermore, the kinetic rate of dimerization seems to be accompanied by a correction term, associated with the requirement of energy and momentum conservation in molecule–molecule collisions. This energy conservation requires the presence of three-body collisions at the very initial step of particle formation.

AB - Silver nanoparticles were prepared in a tubular flow reactor using an evaporation–condensation technique. The size distribution of the particles was measured using standard aerosol instruments and electron microscopy. A comparison with results obtained by a discrete population balance model with molecule-by-molecule resolution suggest that the particles probably nucleate kinetically through a dimerization process instead of a thermodynamic pathway over a free energy barrier, as is typically described by classical nucleation theory. Furthermore, the kinetic rate of dimerization seems to be accompanied by a correction term, associated with the requirement of energy and momentum conservation in molecule–molecule collisions. This energy conservation requires the presence of three-body collisions at the very initial step of particle formation.

KW - silver

KW - nanoparticles

KW - nucleation

KW - formation

KW - collisions

KW - evaporation-condensation

U2 - 10.1016/j.jcis.2004.01.023

DO - 10.1016/j.jcis.2004.01.023

M3 - Article

VL - 274

SP - 526

EP - 530

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

SN - 0021-9797

IS - 2

ER -