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Journal of Nanomaterials
Volume 2013 (2013), Article ID 938370, 10 pages
http://dx.doi.org/10.1155/2013/938370
Research Article

Understanding the Factors That Control the Formation and Morphology of through Hydrothermal Route

1Department of Applied Physics, Research Center Analysis and Measurement and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 2999 North Renmin Road, Songjiang District, Shanghai 201620, China
2Department of Mathematical Sciences, College of Engineering, Tennessee State University, 3500 John A. Merritt Boulevard, Nashville, TN 37209-156, USA
3National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083, China

Received 18 December 2012; Revised 7 March 2013; Accepted 11 March 2013

Academic Editor: Xuebo Cao

Copyright © 2013 Xu Liu 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.

Abstract

The influence of the choice of ethanol-water volume ratio, concentration of zinc salt, and ZnO buffer layer on the formation and morphology of grown from the hydrothermal route was systematically discussed. Experimental results suggested that rectangle sheets and upright-standing plates were obtained by limiting ethanol-water volume ratio. The concentration of zinc salt was crucial for getting phase-pure . The presence of ZnO buffer layer could lead to the that chemical composition of product grown on the substrate was totally different from the product grown in the solution. Possible formation mechanism of was also studied. Raman spectrum of displays a complex behavior with four modes, which can be assigned to the vibrational modes of Zn–H–O, Zn–O, H2O-nitrate, and nitrate. Porously ZnO rectangle sheets were obtained by thermal treatment of rectangle sheets.