About this Journal Submit a Manuscript Table of Contents
Journal of Nanomaterials
Volume 2012 (2012), Article ID 907503, 7 pages
http://dx.doi.org/10.1155/2012/907503
Research Article

Low Temperature Synthesis of Hexagonal Shaped α-Al2O3 Using a Solvothermal Method

1Department of Chemistry, College of Science, Yeungnam University, 214-1 Daedong, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
2School of Chemical Engineering, Yeungnam University, 214-1 Daedong, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
3TPS Inc., 193 Galsan-dong, Dalseo-gu, Daegu 704-900, Republic of Korea

Received 15 November 2012; Revised 6 December 2012; Accepted 12 December 2012

Academic Editor: Jianxin Zou

Copyright © 2012 A-Young Kim 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

This study demonstrates the low temperature synthesis of α-Al2O3 by solvothermal method using gibbsite alumina precursor in 1, 4-butanediol solvent according to various pH conditions. In acidic solution, an orthorhombic boehmite (AlOOH) structure was obtained after solvothermal reaction. A significant result in this study was that the solvothermally synthesized alumina in at 300 °C for 36 h represented a rhombohedral α-Al2O3 structure hexagonal shaped with about 1.5~2.0 μm of particle size. Otherwise, the α-Al2O3 structure was rather changed to the mixture of a boehmite and α-Al2O3 structures above . In the case of α-Al2O3 synthesized at , the specific surface area was 26.18 m2/g, and the particles that were stable in acidic solution resulted in 61.80 mV of zeta potential.