title: Synthesis and characterization of highly crystalline MgO nanopowders via a modified chemical-precipitation process.
abstract: A modified chemical-precipitation method is proposed to synthesize MgO nanopowders with high crystallinity at a low temperature of 400 degrees C using acetic acid as a modifier. The as-obtained intermediates and final products were investigated by Fourier-transformed infrared spectroscopy, thermogravimetric analysis, X-ray diffraction and transmission electron microscopy, respectively. The influence of acetic acid in the MgO preparation process was also investigated by a comparison of the samples without acetic acid, and the mechanism of acetic acid modification is also proposed. The carboxyl group of acetic acid could coordinate with Mg atom in a monodentate mode to form a new organic ligand intermediate Mg(OH)(OCOCH3), which facilitates the thermal decomposition of the intermediate at low temperature and enhances the crystallization of MgO.
authors: State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074 Hubei, PR China.
authors: Wei
authors: W
authors: Wang
authors: Xueliang
authors: X
authors: Qiao
authors: Aiqing
authors: A
authors: Zhang
authors: Jianguo
authors: J
authors: Chen
authors: Fatang
authors: F
authors: Tan