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Journal of Nanomaterials
Volume 2015 (2015), Article ID 175605, 5 pages
http://dx.doi.org/10.1155/2015/175605
Research Article

Growth of BiFeO3 Microcylinders under a Hydrothermal Condition

1School of Science, Lanzhou University of Technology, Lanzhou 730050, China
2State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

Received 22 April 2014; Revised 26 September 2014; Accepted 26 September 2014

Academic Editor: Debasis Dhak

Copyright © 2015 L. J. Di 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

BiFeO3 microcylinders were synthesized via a hydrothermal condition. SEM observation reveals that with increasing the hydrothermal reaction time from 6 to 15 h, the microcylinders grow from ~0.7 to ~4.1 μm in height, whereas their diameter remains to be 3.7-3.8 μm with a minor change. The microcylinders are mainly made up of sphere-like grains of 100–150 nm in size. A possible growth mechanism of the BiFeO3 microcylinders is proposed. The photocatalytic activity of the as-prepared BiFeO3 samples was evaluated by the degradation of acid orange 7 under simulated sunlight irradiation, revealing that they possess an appreciable photocatalytic activity. Magnetic hysteresis loop measurement shows that the BiFeO3 microcylinders exhibit a typical antiferromagnetic behavior at room temperature.