A formalism relating the conductivity of functionalized nanoparticles to constituent ligand molecules and application to water-containing silica

A formalism is presented that relates adsorption-desorption phenomena to the charge transfer events that take place on the surface of functionalized nanoparticles. The equations are applied to experimental results for the scaled electrical conductivity of a hydrophilic fumed silica with a nanopartic...

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Bibliographic Details
Published inPhysical chemistry chemical physics : PCCP Vol. 12; no. 23; pp. 5993 - 5997
Main Authors Di Noto, Vito, Lavina, Sandra, Wintersgill, Mary. C, Fontanella, John J
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 21.06.2010
Subjects
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Surface physical chemistry
Water
Binary compound
Electrical conductivity
Adsorption
Nanoparticle
Distribution
Conductivity
Equation
Desorption
Charge transfer
Silica
Diameter
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Summary:A formalism is presented that relates adsorption-desorption phenomena to the charge transfer events that take place on the surface of functionalized nanoparticles. The equations are applied to experimental results for the scaled electrical conductivity of a hydrophilic fumed silica with a nanoparticle diameter of 7 nm. Insight into the distribution of water on the surface of the nanoparticles is obtained. A formalism accounting for the interactions between ligand molecules and surface functional groups is applied to water on silica nanoparticles.
ISSN:1463-9076
1463-9084
DOI:10.1039/b924811k