Ionic Strength Dependent Kinetics of Nanocolloidal Gold Deposition

Research output: Contribution to journalArticleAcademic

38 Citations (Scopus)

Abstract

The deposition kinetics of the irreversible adsorption of citrate-stabilized, nanocolloidal gold particles on Si/SiO2 surfaces, derivatized with (aminopropyl)triethoxysilane, is investigated in situ using single wavelength reflectometry. A well-defined flow of colloids toward the surface is realized using a radial impinging jet cell geometry. The saturation coverage after prolonged deposition can be analyzed in terms of random sequential adsorption and depends on the ionic strength of the solution, in good agreement with DLVO theory. Atomic force microscopy measurements indicate that for higher coverages, the formation of particle clusters gives rise to a deviation from DLVO behavior. After a short transition time, the dynamics of the deposition process is at first mass transport limited. Surface blocking effects determine the adsorption kinetics in the final stage. The entire deposition process can be adequately described in terms of a generalized adsorption theory, which combines the effects of mass transport and the actual adsorption onto the surface.
Original languageUndefined
Pages (from-to)8102-8108
JournalLangmuir
Volume19
Issue number19
DOIs
Publication statusPublished - 2003

Keywords

  • IR-59298

Cite this

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title = "Ionic Strength Dependent Kinetics of Nanocolloidal Gold Deposition",
abstract = "The deposition kinetics of the irreversible adsorption of citrate-stabilized, nanocolloidal gold particles on Si/SiO2 surfaces, derivatized with (aminopropyl)triethoxysilane, is investigated in situ using single wavelength reflectometry. A well-defined flow of colloids toward the surface is realized using a radial impinging jet cell geometry. The saturation coverage after prolonged deposition can be analyzed in terms of random sequential adsorption and depends on the ionic strength of the solution, in good agreement with DLVO theory. Atomic force microscopy measurements indicate that for higher coverages, the formation of particle clusters gives rise to a deviation from DLVO behavior. After a short transition time, the dynamics of the deposition process is at first mass transport limited. Surface blocking effects determine the adsorption kinetics in the final stage. The entire deposition process can be adequately described in terms of a generalized adsorption theory, which combines the effects of mass transport and the actual adsorption onto the surface.",
keywords = "IR-59298",
author = "E.A.M. Brouwer and Kooij, {Ernst S.} and Herbert Wormeester and Bene Poelsema",
year = "2003",
doi = "10.1021/la034698g",
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journal = "Langmuir",
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publisher = "American Chemical Society",
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Ionic Strength Dependent Kinetics of Nanocolloidal Gold Deposition. / Brouwer, E.A.M.; Kooij, Ernst S.; Wormeester, Herbert; Poelsema, Bene.

In: Langmuir, Vol. 19, No. 19, 2003, p. 8102-8108.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - Ionic Strength Dependent Kinetics of Nanocolloidal Gold Deposition

AU - Brouwer, E.A.M.

AU - Kooij, Ernst S.

AU - Wormeester, Herbert

AU - Poelsema, Bene

PY - 2003

Y1 - 2003

N2 - The deposition kinetics of the irreversible adsorption of citrate-stabilized, nanocolloidal gold particles on Si/SiO2 surfaces, derivatized with (aminopropyl)triethoxysilane, is investigated in situ using single wavelength reflectometry. A well-defined flow of colloids toward the surface is realized using a radial impinging jet cell geometry. The saturation coverage after prolonged deposition can be analyzed in terms of random sequential adsorption and depends on the ionic strength of the solution, in good agreement with DLVO theory. Atomic force microscopy measurements indicate that for higher coverages, the formation of particle clusters gives rise to a deviation from DLVO behavior. After a short transition time, the dynamics of the deposition process is at first mass transport limited. Surface blocking effects determine the adsorption kinetics in the final stage. The entire deposition process can be adequately described in terms of a generalized adsorption theory, which combines the effects of mass transport and the actual adsorption onto the surface.

AB - The deposition kinetics of the irreversible adsorption of citrate-stabilized, nanocolloidal gold particles on Si/SiO2 surfaces, derivatized with (aminopropyl)triethoxysilane, is investigated in situ using single wavelength reflectometry. A well-defined flow of colloids toward the surface is realized using a radial impinging jet cell geometry. The saturation coverage after prolonged deposition can be analyzed in terms of random sequential adsorption and depends on the ionic strength of the solution, in good agreement with DLVO theory. Atomic force microscopy measurements indicate that for higher coverages, the formation of particle clusters gives rise to a deviation from DLVO behavior. After a short transition time, the dynamics of the deposition process is at first mass transport limited. Surface blocking effects determine the adsorption kinetics in the final stage. The entire deposition process can be adequately described in terms of a generalized adsorption theory, which combines the effects of mass transport and the actual adsorption onto the surface.

KW - IR-59298

U2 - 10.1021/la034698g

DO - 10.1021/la034698g

M3 - Article

VL - 19

SP - 8102

EP - 8108

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 19

ER -