Specifics of Hydrothermal Synthesis
of Oriented Zinc Oxide Nanorods on Metallic Zinc Substrates

A. I. Gavrilov^a, O. O. Kapitanova^a, A. N. Baranov^b, and B. P. Churagulov^b

^aFaculty of Materials Science, Moscow State University, Moscow, 119991 Russia

^bFaculty of Chemistry, Moscow State University, Moscow, 119991 Russia

Received August 15, 2011

Abstract—Zinc oxide nanostructures are prepared hydrothermally in the presence of ethylenediamine (EDA).
The morphology and photoluminescent properties of final products are studied as functions of synthesis tem-
perature, synthesis time, and EDA concentration. A decrease in EDA concentration to 30% favors the formation
of more perfect and more ordered structures. Blank experiments show that hydrothermal synthesis without
organic reagents does not produce nanostructures. When samples are sheltered from convective flows in the
cell, the rod growth direction is dictated by the grain orientation in the foil. When nanorods are formed under
low supersaturations (in the absence of convective flows), oxygen nonstoichiometry arises in the nanorods and
appears in photoluminescence spectra as increased peak intensities in the green spectral range.

DOI: 10.1134/S0036023612090069

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