Title

ZnO Hierarchical Nanostructures: Simple Solvothermal Synthesis and Growth Mechanism

Authors

Authors

A. Dev; S. Kar;S. Chaudhuri

Comments

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Abbreviated Journal Title

J. Nanosci. Nanotechnol.

Keywords

Nano and Micro Structure; Scanning and Transmission Electron Microscopy; Zinc Oxide; ONE-DIMENSIONAL NANOSTRUCTURES; ENHANCED FIELD-EMISSION; LIGHT-EMITTING; DIODE; ZINC-OXIDE; THERMAL EVAPORATION; EFFECT TRANSISTOR; NANOROD; ARRAYS; THIN-FILMS; NANOWIRE; LUMINESCENCE; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials; Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter

Abstract

Hierarchical nano/micro structures of ZnO have been fabricated by solvothermal approach on sol-gel derived ZnO thin films. Paintbrush like nano/micro rod assembly, double-sided brush and windmill type architectures of ZnO are obtained when the ZnO thin film coated substrates were treated solvothermally in water at pH 10. Aligned nanorods are obtained at pH similar to 13.5 in water. In ethylenediamine-water solvent divergent micro/nanorod assemblies such as hemispherical dandelion, rice plant type bush of ZnO are obtained. Increase in the percentage of ethyelendiamine resulted in the formation of smaller assemblies of relatively thin nanorods. Initial slow reaction caused by the slow increase of the temperature inside the reaction medium and the different growth kinetics of the ZnO crystals are supposed to be the reason behind the architectural assemblies of the ZnO crystals.

Journal Title

Journal of Nanoscience and Nanotechnology

Volume

8

Issue/Number

9

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

4506

Last Page

4513

WOS Identifier

WOS:000260776900030

ISSN

1533-4880

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