[1]贾全利,闫帅,汪涤,等.熔盐法制备钽酸钠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.[doi:10.13705/j.issn.1671-6833.2018.05.014]
　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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熔盐法制备钽酸钠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卷
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
1. 郑州大学高温功能材料河南省重点实验室;2. 河南建筑材料研究设计院有限公司
Author(s):
Jia Quanli 1; Yan Shuai 1; Wang Di 2; Liu Xinhong 1
1. Henan Provincial Key Laboratory of High Temperature Functional Materials, Zhengzhou University; 2. Henan Building Materials Research and Design Institute Co., Ltd.
关键词:
钽酸钠' target="_blank" rel="external">"> 钽酸钠; 熔盐法; 光催化; 超细粉体; 固相反应
Keywords:
Sodium tantalate; molten salt method; Photocatalytic; ultrafine powder; solid phase reaction
DOI:
10.13705/j.issn.1671-6833.2018.05.014
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