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

被引：120

作者：

Kakiuchi, Keita ^{[1
]}

Hosono, Eiji ^{[1
]}

Kimura, Toshio ^{[1
]}

Imai, Hiroaki ^{[1
]}

Fujihara, Shinobu ^{[1
]}

机构：

[1] Keio Univ, Fac Sci & Technol, Dept Appl Chem, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2006年 / 39卷 / 01期

关键词：

ZnO; nanostructure; mesoporosity; chemical bath deposition;

D O I：

10.1007/s10971-006-6321-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Mesoporous ZnO nanosheets were successfully prepared by pyrolytic transformation of zinc carbonate hydroxide hydrate, Zn4CO3(OH)(6)(H2O)-H-.. 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 degrees 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 Zn4CO3(OH)(6).H2O nanosheets were transformed into wurtzite ZnO by heating at 300 degrees C in air without losing the microstructural feature.

引用

页码：63 / 72

页数：10

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