Controlling the Distribution of Supported Nanoparticles by Aqueous Synthesis

Tamara M. Eggenhuisen, Heiner Friedrich, Fabio Nudelman, Jovana Zecevic, Nico A. J. M. Sommerdijk*, Petra E. de Jongh, Krijn P. de Jong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Synthesis of supported nanoparticles with controlled size and uniform distribution is a major challenge in nanoscience, in particular for applications in catalysis. Cryo-electron tomography revealed with nanometer resolution the 3D distribution of phases present during nanoparticle synthesis via impregnation, drying, and thermal treatment with transition metal salt precursors. By conventional methods a nonuniform salt distribution led to clustered metal oxide nanoparticles (NiO, Co3O4). In contrast, freeze-drying restricted solution mobility during drying and a more uniform nanoparticle distribution was obtained. By this fundamental insight into catalyst preparation, controlled synthesis of supported catalysts was achieved in a way that is also applicable for other nanostructured materials.

Original languageEnglish
Pages (from-to)890-896
Number of pages7
JournalChemistry of Materials
Volume25
Issue number6
DOIs
Publication statusPublished - 26 Mar 2013

Keywords

  • nanoparticle synthesis
  • heterogeneous catalyst
  • cryogenic electron tomography
  • freeze-drying
  • TROPSCH SYNTHESIS CATALYSTS
  • HETEROGENEOUS CATALYSIS
  • CO3O4 NANOPARTICLES
  • IMPREGNATION
  • SILICA
  • NITRATE
  • SIZE
  • DECOMPOSITION
  • DEACTIVATION
  • NUCLEATION

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