Formation of cellular films consisting of wurtzite-type zinc oxide nanosheets by mediation of phosphate anions

Satoshi Yamabi; Junko Yahiro; Satoko Iwai; Hiroaki Imai

doi:10.1016/j.tsf.2005.04.073

Formation of cellular films consisting of wurtzite-type zinc oxide nanosheets by mediation of phosphate anions

Satoshi Yamabi, Junko Yahiro, Satoko Iwai, Hiroaki Imai

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

We successfully prepared a wide variety of wurtzite-type zinc oxide films exhibiting columnar, cellular and densely packed morphologies in a simple aqueous solution system containing phosphate anions. As the phosphate concentration increased, the shape of crystalline units composing the films varied from hexagonal needles into seaweed-like sheets. A novel type of open cellular structures was obtained by assembly of nanoscale zinc oxide sheets covered with phosphate. Specific adsorption of phosphate anions on (001) of the wurtzite-type crystal flattened the crystal grains, and then induced the structural evolution into a cellular form. A blue shift of the absorption edge suggested that the quantum size effect occurred in the nanoscale platy crystals composing the cellular films.

Original language	English
Pages (from-to)	23-30
Number of pages	8
Journal	Thin Solid Films
Volume	489
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tsf.2005.04.073
Publication status	Published - 2005 Oct 1

Keywords

Nanosheets
Phosphate ions
Thin films
Zinc oxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/j.tsf.2005.04.073

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title = "Formation of cellular films consisting of wurtzite-type zinc oxide nanosheets by mediation of phosphate anions",

abstract = "We successfully prepared a wide variety of wurtzite-type zinc oxide films exhibiting columnar, cellular and densely packed morphologies in a simple aqueous solution system containing phosphate anions. As the phosphate concentration increased, the shape of crystalline units composing the films varied from hexagonal needles into seaweed-like sheets. A novel type of open cellular structures was obtained by assembly of nanoscale zinc oxide sheets covered with phosphate. Specific adsorption of phosphate anions on (001) of the wurtzite-type crystal flattened the crystal grains, and then induced the structural evolution into a cellular form. A blue shift of the absorption edge suggested that the quantum size effect occurred in the nanoscale platy crystals composing the cellular films.",

keywords = "Nanosheets, Phosphate ions, Thin films, Zinc oxide",

author = "Satoshi Yamabi and Junko Yahiro and Satoko Iwai and Hiroaki Imai",

note = "Funding Information: This work was supported by Grant-in-Aid for Scientific Research (No. 13650742) and 21st Century COE program “KEIO Life Conjugate Chemistry” from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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AU - Yahiro, Junko

AU - Iwai, Satoko

AU - Imai, Hiroaki

N1 - Funding Information: This work was supported by Grant-in-Aid for Scientific Research (No. 13650742) and 21st Century COE program “KEIO Life Conjugate Chemistry” from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2005/10/1

Y1 - 2005/10/1

N2 - We successfully prepared a wide variety of wurtzite-type zinc oxide films exhibiting columnar, cellular and densely packed morphologies in a simple aqueous solution system containing phosphate anions. As the phosphate concentration increased, the shape of crystalline units composing the films varied from hexagonal needles into seaweed-like sheets. A novel type of open cellular structures was obtained by assembly of nanoscale zinc oxide sheets covered with phosphate. Specific adsorption of phosphate anions on (001) of the wurtzite-type crystal flattened the crystal grains, and then induced the structural evolution into a cellular form. A blue shift of the absorption edge suggested that the quantum size effect occurred in the nanoscale platy crystals composing the cellular films.

AB - We successfully prepared a wide variety of wurtzite-type zinc oxide films exhibiting columnar, cellular and densely packed morphologies in a simple aqueous solution system containing phosphate anions. As the phosphate concentration increased, the shape of crystalline units composing the films varied from hexagonal needles into seaweed-like sheets. A novel type of open cellular structures was obtained by assembly of nanoscale zinc oxide sheets covered with phosphate. Specific adsorption of phosphate anions on (001) of the wurtzite-type crystal flattened the crystal grains, and then induced the structural evolution into a cellular form. A blue shift of the absorption edge suggested that the quantum size effect occurred in the nanoscale platy crystals composing the cellular films.

KW - Nanosheets

KW - Phosphate ions

KW - Thin films

KW - Zinc oxide

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Formation of cellular films consisting of wurtzite-type zinc oxide nanosheets by mediation of phosphate anions

Abstract

Keywords

ASJC Scopus subject areas

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