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Issue 9, 2010
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Complex ZnO nanotree arrays with tunable top, stem and branch structures

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Abstract

Hierarchical tree-, mushroom- and cockscomb-like ZnO arrays with increasing branching order and complexities have been grown in situ on cheap zinc plates by a simple hydrothermal oxidation approach. Their morphology, crystal structure and orientation relationship are characterized by powder X-ray diffraction, scanning electron microscopy (SEM) and cross-sectional high-resolution transmission electron microscopy (HRTEM). The wurtzite ZnO arrays, growing mainly in the [0001] direction, show a special orientation relationship between the stem and the branch as well as a novel stem–branch boundary which might be attributed to the least mismatch between {10[1 with combining macron]1} and (0002) lattice planes. The co-solvent ethylenediamine (en) was used to control the morphology and complexing of these complex ZnO nanostructures. Correspondingly, the physical properties of ZnO nanostructure assembly arrays were tuned and a stronger UV emission was observed with negligible emissions in the visible range, indicating the highly crystalline features of the complex ZnO micro-/nanostructured materials.

Graphical abstract: Complex ZnO nanotree arrays with tunable top, stem and branch structures

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Publication details

The article was received on 02 Feb 2010, accepted on 15 Apr 2010 and first published on 25 May 2010


Article type: Paper
DOI: 10.1039/C0NR00076K
Citation: Nanoscale, 2010,2, 1674-1683
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    Complex ZnO nanotree arrays with tunable top, stem and branch structures

    F. Zhao, J. Zheng, X. Yang, X. Li, J. Wang, F. Zhao, K. S. Wong, C. Liang and M. Wu, Nanoscale, 2010, 2, 1674
    DOI: 10.1039/C0NR00076K

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