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Journal of Nanomaterials
Volume 2014, Article ID 680592, 6 pages
Research Article

Fabrication and Superhydrophobic Property of ZnO Micro/Nanocrystals via a Hydrothermal Route

1Quanzhou Normal University, Quanzhou, Fujian 362011, China
2College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, China
3Materials College of Huaqiao University, Xiamen, Fujian 361021, China

Received 12 October 2013; Accepted 24 February 2014; Published 23 March 2014

Academic Editor: Yanbao Zhao

Copyright © 2014 Chunmei Xiao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Superhydrophobic ZnO micro/nanocrystals were fabricated on a large scale using a facile one-pot hydrothermal process successfully. The morphologies and chemical composition of as-synthesized ZnO were investigated by the scanning electron microscope (SEM) and X-ray powder diffraction (XRD). The morphology of ZnO products changed from uniform size microrods to flower-like micronanostructures, when the temperature changed from 120°C to 180°C. The morphology of ZnO was strongly affected by the pH. The wettability of the as-synthesized ZnO micro/nanocrystals was studied by measuring water contact angle (CA). The largest static CA for water is 167°, which is closely related to both the ZnO micro/nanostructure and chemical modification. Furthermore, the as-prepared ZnO surface showed superhydrophobicity for some corrosive liquids such as basic and acidic aqueous solutions. The CAs of the surface modified with ZnO prepared at 160°C were over 155° in the range of pH = 1–13.