Energetics of ZnO nanoneedles: Surface enthalpy, stability, and growth

Peng Zhang, Thomas Lee, Fen Xu, Alexandra Navrotsky

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The surface enthalpy of ZnO nanoneedles has been measured by oxide melt solution calorimetry of samples with different surface areas. Water adsorption calorimetry was carried out to characterize the stabilization effect of surface hydration. The surface enthalpies of hydrated and anhydrous surfaces (8.21 ± 0.67 and 9.81 ± 0.69 J/m2, respectively) are larger than those of nanorods. The less stable surface of nanoneedles provides a driving force for the transformation of nanoneedles into nanorods during The formation of bushlike assemblies of nanoneedles is also discussed. aging.

Original languageEnglish (US)
Pages (from-to)1652-1657
Number of pages6
JournalJournal of Materials Research
Volume23
Issue number6
DOIs
StatePublished - Jun 2008
Externally publishedYes

ASJC Scopus subject areas

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

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