Synthesis of porous single crystalline ZnO nanowires and the derivation of surface free energy from equilibrium nanopore

Jay Ghatak, Jun Han Huang, Po Chien Huang, Yu I. Shih, Chuan Pu Liu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Single crystalline ZnO nanowires were grown using standard hydrothermal growth process and subsequently closed nanopores were obtained by post-annealing in various conditions. The pore size, shape and spatial distribution are studied with various temperatures, time and gas (Ar and H 2) mixture combinations during the annealing. The annealing treatment with Ar only at elevated temperatures seems to produce more thermodynamically stable closed pores. From the thermodynamically equilibrium pores with average size of 12 nm, the surface free energy of ZnO{10-13} is determined as ∼0.99 Jm -2 experimentally by inverse Wulffs construction.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume159
Issue number3
DOIs
Publication statusPublished - 2012 Feb 29

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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