Fabrication of ZnO nanoparticles with various aspect ratios through acidic and basic routes

Tetsuo Kawano, Hiroaki Imai

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67 Citations (Scopus)


Nanoscale ZnO grains and rods having various aspect ratios were selectively synthesized through acidic and basic routes, respectively, in an aqueous system at 60 °C. Equiaxial nanograins were obtained by the addition of NaOH into an acidic solution of ZnSO4 (acidic route). On the other hand, nanorods with an aspect ratio ∼12 were prepared by the introduction of ZnSO4 into a basic solution of NaOH (basic route). The aspect ratio of ZnO nanoparticles was changed by the preparation routes, whereas the final pH of the solutions was the same. The variation of pH in the reaction system influenced the density of homogeneous nucleation and the crystal growth along the c axis. The morphological control of one-dimensional ZnO particulate materials with nanosized diameters and lengths was successfully achieved using the simple mixing techniques.

Original languageEnglish
Pages (from-to)1054-1056
Number of pages3
JournalCrystal Growth and Design
Issue number4
Publication statusPublished - 2006 Apr 1


ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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