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Published in: Journal of Nanoparticle Research 4/2013

01-04-2013 | Research Paper

Control growth of single crystalline ZnO nanorod arrays and nanoflowers with enhanced photocatalytic activity

Authors: Jiu-Ju Feng, Zhen-Zhen Wang, Yong-Fang Li, Jian-Rong Chen, Ai-Jun Wang

Published in: Journal of Nanoparticle Research | Issue 4/2013

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Abstract

Single crystalline vertical nanorod arrays and nanoflowers of ZnO have been grown in situ on cheap zinc foils under hydrothermal conditions, by means of hexamethylenetetramine and ethanolamine, respectively. Their morphologies and crystal structures are characterized by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. The nanorods and flowers of ZnO grew along the \( \{ 10\bar{1}1\} \) and \( \{ 0001\} \) planes, respectively. Both types of ZnO display high photocatalytic ability toward the degradation of methylene orange under UV irradiation. The ZnO nanorods show better performance than that of the ZnO nanoflowers, and the \( \{ 10\bar{1}1\} \) facets of the ZnO nanorods have higher photoactivity than that of the \( \{ 000\bar{1}\} \) or \( \{ 10\bar{1}0\} \) crystal planes. This is because the weaker coordinated O atoms on the surface are more likely to be saturated by H atoms in aqueous solution, thereby releasing more free OH radicals.

Graphical Abstract

A facile method was developed for selective control synthesis of ZnO nanoflowers and nanorod arrays on Zinc foil, with the assistance of ethanolamine and the hexamethylenetetramine, respectively. The illustration shows the time evolution of the two ZnO structures.

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Metadata
Title
Control growth of single crystalline ZnO nanorod arrays and nanoflowers with enhanced photocatalytic activity
Authors
Jiu-Ju Feng
Zhen-Zhen Wang
Yong-Fang Li
Jian-Rong Chen
Ai-Jun Wang
Publication date
01-04-2013
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 4/2013
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-013-1565-x

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