Study on Heating Profile of Liquid-mixing-synthesized ZnTiO3

Seminar Nasional Material 2018

Ermawati, F.U.^1 ; N.A., Imamah

Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Surabaya

60231, Indonesia^1

关键词: Liquid mixing method;    Material chemistry;    Normal condition;    Phase formations;    Secondary phase;    Stoichiometric ratio;    Synthesis method;    Temperature range;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/599/1/012010/pdf
DOI  :  10.1088/1757-899X/599/1/012010

来源: IOP

【 摘 要 】

The synthesis of monophasic ZnTiO3 powder has been reported as one of the challenges in material chemistry because under normal condition and as prepared by various synthesis methods, ZnTiO3 phase readily decomposes to Zn2TiO4 and TiO2 rutile phases. This is due to the temperature range of ZnTiO3 phase formation was very narrow, i.e. 600 - 800 °C; above that temperature, the decomposition of ZnTiO3 phase took place. This paper is intended to introduce a facile route, named liquid mixing method, to prepare ZnTiO3 powder from Zn and Ti metal powders as the raw materials and HCl as the solvent. Via this route, ZnTiO3 phase was formed at a temperature as low as 550 °C with particle size distributed homogeneously. The heating profile of ZnTiO3 phase from 440 to 900 °C was studied based on TG/DTA, XRD and FTIR data. However, when a 'normal' stoichiometric ratio of Zn: Ti = 1: 1 was applied, TiO2 rutile phase becomes dominant, while ZnTiO3 phase is only a secondary phase. This affects to the crystallinity of the ZnTiO3 phase. An effort to overcome the dominance of TiO2 phase was also demonstrated in this paper.