Fabrication of mesoporous ZnO nanosheets from precursor templates grown in aqueous solutions

Keita Kakiuchi, Eiji Hosono, Toshio Kimura, Hiroaki Imai, Shinobu Fujihara

Research output: Contribution to journalArticle

92 Citations (Scopus)

Abstract

Mesoporous ZnO nanosheets were successfully prepared by pyrolytic transformation of zinc carbonate hydroxide hydrate, Zn4CO 3(OH)6•H2O. The nanosheets were initially formed as assemblies on glass substrates during chemical bath deposition (CBD) in aqueous solutions of urea and zinc acetate dihydrate, zinc chloride, zinc nitrate hexahydrate, or zinc sulfate heptahydrate at 80°C. It was key to induce heterogeneous nucleation of Zn4CO3(OH) 6•H2O by promoting a gradual hydrolysis reaction of urea and controlling the degree of supersaturation of zinc hydroxide species. Morphology of Zn4CO3(OH)6•H2O was largely influenced by the anions present in the CBD solutions. The Zn 4CO3(OH)6•H2O nanosheets were transformed into wurtzite ZnO by heating at 300°C in air without losing the microstructural feature.

Original languageEnglish
Pages (from-to)63-72
Number of pages10
JournalJournal of Sol-Gel Science and Technology
Volume39
Issue number1 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Jul

Fingerprint

Nanosheets
Zinc
templates
zinc
aqueous solutions
Fabrication
fabrication
Urea
Zinc Acetate
Zinc Sulfate
ureas
Supersaturation
hydroxides
baths
Hydrates
Anions
Hydrolysis
Nucleation
zinc chlorides
Zinc chloride

Keywords

  • Chemical bath deposition
  • Mesoporosity
  • Nanostructure
  • ZnO

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Fabrication of mesoporous ZnO nanosheets from precursor templates grown in aqueous solutions. / Kakiuchi, Keita; Hosono, Eiji; Kimura, Toshio; Imai, Hiroaki; Fujihara, Shinobu.

In: Journal of Sol-Gel Science and Technology, Vol. 39, No. 1 SPEC. ISS., 07.2006, p. 63-72.

Research output: Contribution to journalArticle

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