Controlled growth of ZnO nanoflowers on nanowall and nanorod networks via a hydrothermal method

Jian Fu Tang, Hsiu Hsien Su, Yang Ming Lu, Sheng-Yuan Chu

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


This study developed a hydrothermal method for the growth of three types of zinc oxide (ZnO) nanostructures: nanorods, nanowalls and nanoflowers. The structures are produced at high densities with a high degree of uniformity on Al-coated SiO2 substrates without the need for surfactant. Unlike the random distribution of ZnO nanoflowers reported in previous studies, the proposed method makes it possible to control the distribution of these structures along the grooves created by altering the growth rate of ZnO nanorods and nanowalls. The number of ZnO nanoflowers created in this manner depends on the concentration of solution (HMT: hexamethylenetetramine) and reaction time. Measurements of cathodoluminescence (CL), X-ray diffractometry (XRD), and SEM-EDS confirm that the resulting structures are pure ZnO with good crystallinity. We also investigated the optical properties of these ZnO nanostructures and propose a possible growth mechanism. This journal is

Original languageEnglish
Pages (from-to)592-597
Number of pages6
Issue number3
Publication statusPublished - 2015 Jan 21

All Science Journal Classification (ASJC) codes

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


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