Title: A simple hydrothermal method to synthesise highly pure hexagonal and rhombus α-LiAlO₂ nanosheets

Authors: Zilong Tang, Linfeng Hu, Zhongtai Zhang

Addresses: State Key Laboratory of New Ceramics and Fine Processing, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, PR China. ' State Key Laboratory of New Ceramics and Fine Processing, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, PR China. ' State Key Laboratory of New Ceramics and Fine Processing, Department of Material Science and Engineering, Tsinghua University, Beijing 100084, PR China

Abstract: Pure α-LiAlO₂ nanosheets have been successfully prepared by a simple hydrothermal route without adding any surfactants. The morphology of LiAlO₂ nanosheets was controllable by adjusting the hydrothermal temperature. Hexagonal and rhombus lithium aluminate nanosheets have been obtained at different hydrothermal temperatures of 150°C and 190°C, respectively. The structure and morphology of the products were characterised by X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM). The synthesis procedure provided a simple method to prepare lithium aluminate with high purity. The formation mechanism of the nanostructural lithium aluminate was proposed.

Keywords: hydrothermal synthesis; lithium aluminate nanosheets; hexagonal nanosheets; rhombus nanosheets; nanotechnology; nanostructures.

DOI: 10.1504/IJMPT.2010.031425

International Journal of Materials and Product Technology, 2010 Vol.37 No.3/4, pp.263 - 270

Published online: 03 Feb 2010 *

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