Issue 21, 2012
From the journal:

Journal of Materials Chemistry

The preparation of spiral ZnO nanostructures by top-down wet-chemical etching and their related properties†

Xiguang Han,ab   Xi Zhou,b   Yaqi Jiangb  and  Zhaoxiong Xie*b  

* Corresponding authors

a Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou, P. R. China

b State Key Laboratory of Physical Chemistry of Solid Surfaces & Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
E-mail: zxxie@xmu.edu.cn

Abstract

In this paper, we report the synthesis of spiral ZnO nanocrystals by the wet-chemical etching of pyramid ZnO nanoparticles in a solvent mixture of oleic acid (OA) and 1-octylamine. Adequate evidence demonstrates that the OA in the mixed solvent acts as the etching agent. The formation of spiral ZnO nanoparticles is due to dislocations in the spiral shape surrounding the c axis formed during the growth of the pyramid ZnO nanoparticles. Moreover, the spiral ZnO nanoparticles exhibit much better gas sensing activity than the pyramid ZnO nanoparticles. Based on the structural analysis, we discuss the relationship between the surface structures and gas sensing properties.

Graphical abstract: The preparation of spiral ZnO nanostructures by top-down wet-chemical etching and their related properties

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Article information

DOI
https://doi.org/10.1039/C2JM30843F
Article type
Paper
Submitted
11 Feb 2012
Accepted
20 Mar 2012
First published
22 Mar 2012

J. Mater. Chem., 2012,22, 10924-10928

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The preparation of spiral ZnO nanostructures by top-down wet-chemical etching and their related properties

X. Han, X. Zhou, Y. Jiang and Z. Xie, J. Mater. Chem., 2012, 22, 10924 DOI: 10.1039/C2JM30843F

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