Crystal-growth process of single-crystal-like mesoporous ZnO through a competitive reaction in solution

Eiji Hosono, Takashi Tokunaga, Shintaro Ueno, Yuya Oaki, Hiroaki Imai, Haoshen Zhou, Shinobu Fujihara

研究成果: Article査読

26 被引用数 (Scopus)

抄録

A novel crystal-growth system and morphology control of ZnO are achieved by using cetyltrimethylammonium chloride (CTAC), a general surfactant, in a new role. We synthesize ZnO via the layered hydroxide zinc acetate (LHZA) in ethanolic-aqueous zinc acetate solution. The CTAC surfactant plays three roles in the nucleation and crystal growth. First, it suppresses the formation of a strong concentration gradient in the solution. Second, it reduces the rates of nucleation and crystal growth of LHZA through diffusion-rate control in the solution. Finally, it expedites the formation of ZnO by increasing the solution pH. The competitive reaction, controlled by CTAC, between the nucleation and crystal growth of LHZA and the formation and crystal growth of ZnO results in the formation of a novel ZnO morphology. This morphology is composed of layered, nearly spherical particles, which are formed by the stacking of nanosheets with single-crystal-like, mesoporous structures.

本文言語English
ページ(範囲)2923-2931
ページ数9
ジャーナルCrystal Growth and Design
12
6
DOI
出版ステータスPublished - 2012 6月 6

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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