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Structuring of colloidal silica nanoparticle suspensions near water-silica interfaces probed by specular neutron reflectivity.
Maroni, Plinio; Gvaramia, Manuchar; Kosior, Dominik; Kubiak, Katarzyna; Scarratt, Liam; Smith, Alexander M; Merkel, Dániel G; Bottyán, László; Borkovec, Michal.
Afiliação
  • Maroni P; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
  • Gvaramia M; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
  • Kosior D; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
  • Kubiak K; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
  • Scarratt L; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
  • Smith AM; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
  • Merkel DG; Wigner Research Centre for Physics, Konkoly-Thege Miklós út 29-33, 1121 Budapest, Hungary and Centre for Energy Research, Konkoly-Thege Miklós út 29-33, 1121 Budapest, Hungary.
  • Bottyán L; Wigner Research Centre for Physics, Konkoly-Thege Miklós út 29-33, 1121 Budapest, Hungary.
  • Borkovec M; Department of Inorganic and Analytical Chemistry, University of Geneva, Sciences II, 30 Quai Ernest-Ansermet, 1205 Geneva, Switzerland. michal.borkovec@unige.ch.
Phys Chem Chem Phys ; 22(11): 6449-6456, 2020 Mar 18.
Article em En | MEDLINE | ID: mdl-32149295
Structuring of aqueous suspensions of colloidal silica nanoparticles near an isolated planar silica-water interface is studied by specular neutron reflectivity. The reflectivity data clearly show that the suspensions develop a damped, oscillatory concentration profile in the normal direction to the interface. The wavelengths of these oscillations agree well with those independently determined by direct force measurements in the slit-geometry. The reflectivity data further demonstrate that the oscillatory structure persists over several layers and that the first particle layer is separated from the interface by a particle-free region.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Suíça País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Assunto da revista: BIOFISICA / QUIMICA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Suíça País de publicação: Reino Unido