Research on the preparation and photocatalytic properties of NaTaO3 ultrafine powders via a Molten salt mediated method
[1]Jia Quanli,Yan Shuai,Wang Di,et al.Research on the preparation and photocatalytic properties of NaTaO3 ultrafine powders via a Molten salt mediated method[J].Journal of Zhengzhou University (Engineering Science),2019,40(02):85-89.[doi:10.13705/j.issn.1671-6833.2018.05.014]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
40
Number of periods:
2019 02
Page number:
85-89
Column:
Public date:
2019-03-19
- Title:
- Research on the preparation and photocatalytic properties of NaTaO3 ultrafine powders via a Molten salt mediated method
- Keywords:
- Sodium tantalate; molten salt method; Photocatalytic; ultrafine powder; solid phase reaction
- CLC:
- -
- Abstract:
- Sodium tantalum oxide (NaTaO3) powders were synthesized using tantalum oxide (Ta2O5) and sodium carbonate as precursors, NaCl-KCl-NaF and NaCl-KCl as molten salt medium. Effects of the types and amount of molten salt, reaction temperature on the phase composition and microstructure of the as-prepared samples were studied; they were characterized by X-ray diffraction and scanning electron microscope, respectively. When the ratio of molten salt and reactant precursor is 1:1, only NaTaO3 phase can be detected in the samples after firing at 600 ℃ in NaCl-KCl-NaF molten salt medium. On increasing the reaction temperature to 1000 ℃, the particle size of as-prepared products is less than 1μm, and their morphology of NaTaO3 is cubic-like shape. The complete convention temperature of precursors to NaTaO3 is 700 ℃ in NaCl-KCl molten salt medium, and the cubic-like shape NaTaO3 powders are fully synthesized at 900 ℃. The as-prepared NaTaO3 powder possesses good photocatalytic properties, and the photocatalytic property is correlated to the particle size and morphology of NaTaO3 powders.
- References:
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Last Update:
2019-03-24