[1]贾全利,闫帅,汪涤,等.熔盐法制备NaTaO3超细粉体及其光催化性能研究[J].郑州大学学报(工学版),2019,40(02):85-89.
 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.
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熔盐法制备NaTaO3超细粉体及其光催化性能研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
40
期数:
2019年02期
页码:
85-89
栏目:
出版日期:
2019-03-19

文章信息/Info

Title:
Research on the preparation and photocatalytic properties of NaTaO3 ultrafine powders via a Molten salt mediated method
作者:
贾全利闫帅汪涤刘新红
文献标志码:
A
摘要:
以Ta2O5、NaCO3为原料,分别以NaCl-KCl-NaF和NaCl-KCl为熔盐介质,合成了NaTaO3粉体。借助X射线衍射仪、扫描电子显微镜研究了熔盐种类、熔盐加入量、热处理温度对合成粉体的物相组成和显微形貌的影响。结果表明:不加熔盐时完全反应生成NaTaO3的温度为700℃,1000℃烧后粉体形貌不规则,且团聚严重。当反应物与熔盐的质量比为1:1时,以NaCl-KCl-NaF为熔盐,反应物完全转化为NaTaO3的温度为600℃,1000℃时NaTaO3晶体长大发育成立方状, 粉体晶粒大小为1μm;而以NaCl-KCl为熔盐时完全转化为NaTaO3的温度为700℃,900℃合成了形貌为立方状的NaTaO3超细粉体。合成的NaTaO3超细粉体具有较好的光催化性能,光催化性能与粉体的粒度和晶体发育程度有关。
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.
更新日期/Last Update: 2019-03-24