Thermochemistry of nanoparticles on a substrate: Zinc oxide on amorphous silica

Tatiana Y. Shvareva, Sergey V. Ushakov, Alexandra Navrotsky, Joseph A. Libera, Jeffrey W. Elam

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Crystalline samples of zinc oxide on a mesoporous amorphous silica substrate were prepared by 5 to 15 atomic layer deposition cycles with diethyl zinc and water at 150 °C. Samples were characterized by x-ray diffraction, thermogravimetry, and nitrogen adsorption-desorption isotherms. High-temperature oxide melt solution calorimetry and water adsorption calorimetry experiments were performed to measure surface enthalpy for crystalline ZnO particles supported on the substrate. The measured enthalpies 1.23 ± 0.35 and 2.07 ± 0.59 J/m2 for hydrous and anhydrous surfaces, respectively, are in agreement with previously reported measurements for unsupported ZnO nanoparticles. Feasibility of thermochemical characterization of complex system of atomic layer deposition (ALD) prepared particles on a substrate was demonstrated.

Original languageEnglish (US)
Pages (from-to)1907-1915
Number of pages9
JournalJournal of Materials Research
Volume23
Issue number7
DOIs
StatePublished - Jul 2008
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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