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Nanometer ball with strontium fluoride and production thereof

A micron-sphere and sub-micron technology, applied in the direction of calcium/strontium/barium fluoride, calcium/strontium/barium halide, etc., to achieve the effect of short time-consuming, easy-to-obtain and simple raw materials

Inactive Publication Date: 2008-06-11
NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Currently, CaF with geometry 2 、BaF 2 Nanomaterials have been reported [see: (a) Sun X.M., LiY.D., Chem.Commun.2003, 1768-1769. (b) Cao M.H., Hu C.W., Wang E.B., J.Am.Chem.Soc.2003 , 125, 11196-11197], while SrF with geometric 2 Nanomaterials have not been reported

Method used

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  • Nanometer ball with strontium fluoride and production thereof
  • Nanometer ball with strontium fluoride and production thereof
  • Nanometer ball with strontium fluoride and production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. SrF 2 Sub-micron preparation:

[0020] Add 60ml H to a 100ml round bottom flask 2 O and 1.06g Sr(NO 3 ) 2 Then, add 20ml of 0.40g ammonium fluoride aqueous solution, and place the system in a JY92-2D ultrasonic instrument (ultrasonic frequency 20kHz) produced by Ningbo Xinzhi Institute of Apparatus, and set the power at room temperature and normal pressure. It is 600W, ultrasonic for 30min. After the reaction, the product was centrifuged, the precipitate was washed successively with distilled water and ethanol, and the obtained precipitate was dried under vacuum and at room temperature to obtain a white powder, namely SrF 2 Submicron. Powder XRD results (see attached figure 1 ) Indicates that it is pure cubic SrF 2 . The position and intensity of the peaks match the literature values ​​[see: Joint Committee on Powder Diffraction Standards, File No 06-0262.]. No impurity peak was found, indicating that the purity of the product is relatively high. Photo via TEM (...

Embodiment 2

[0021] Example 2. SrF 2 Preparation of submicron and microspheres

[0022] Add 60ml H to a 100ml round bottom flask 2 O and 0.27g Sr(NO 3 ) 2 Then, add 20 ml of an aqueous solution containing 0.10 g of ammonium fluoride. This system was placed in a JY92-2D ultrasonic instrument (ultrasonic frequency: 24-25kHz) produced by Ningbo Xinzhi Institute of Apparatus, and the power was set to 600W under normal pressure at room temperature and ultrasonic for 30 minutes. The product was centrifuged, the precipitate was washed sequentially with distilled water and ethanol, and the resulting precipitate was vacuum dried at room temperature to obtain a white powder, namely SrF 2 Sub-micron and micron spheres. The powder XRD results show that it is pure cubic SrF 2 . The position and intensity of the peak match the literature value [see: Joint Committee on Powder Diffraction Standards (JCPDS), File No 06-0262.]. No impurity peak was found, indicating that the purity of the product is relatively ...

Embodiment 3

[0023] Example 3. SrF 2 Sub-micron preparation

[0024] Add 60ml H to a 100ml round bottom flask 2 O and 2.11g Sr(NO 3 ) 2 Then, add 20ml containing 0.75g of ammonium fluoride aqueous solution. This system is placed in a JY92-2D ultrasonic instrument (ultrasonic frequency 20kHz) produced by Zhejiang Ningbo Xinzhi Institute of Apparatus, at room temperature and normal pressure, the power is set to 600W, and the ultrasonic is 30min. The product was centrifuged, the precipitate was washed sequentially with distilled water and ethanol, and the resulting precipitate was vacuum dried at room temperature to obtain a white powder, namely SrF 2 Submicron. The powder XRD results show that it is pure cubic SrF 2 . The position and intensity of the peaks match the literature values ​​[see: Joint Committee on Powder Diffraction Standards (JCPDS), File No 06-0262.]. No impurity peak was found, indicating that the purity of the product is relatively high. Photo via TEM ( Figure 2-3 ), the SrF o...

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Abstract

A strontium fluoride ball and its production are disclosed. The procedure includes preparing ammonium fluoride solution with concentration 5.0-38g / L, preparing strontium nitrate solution with concentration 4.5-105g / L, adding ammonium fluoride solution into strontium nitrate solution in proportion=2:1, precipitating out deposits with ultrasonic 6-30mins, centrifugal separating out deposits, washing by water and alcohol, and vacuum drying at room temperature to obtain white powdery SrF2 nanometer ball.

Description

1. Technical Field [0001] The present invention relates to strontium fluoride SrF 2 Submicron and micron ball and its preparation method. Specifically, it is SrF with a spherical structure 2 SrF prepared by sonochemical method 2 Sub-micron and micron spheres. 2. Background technology [0002] Since Gleiter et al. [see: Birringer R, Gleiter H et al. PhysLett.1984, A(8):365-369.] first prepared nano-bulk materials, the preparation and physical and chemical properties of nano-materials have become the current international frontier Research one. [0003] Traditional methods for preparing nanomaterials can be generally divided into three categories: gas phase method, liquid phase method and mechanical pulverization method. The vapor phase method mainly includes vapor phase condensation method, sputtering method, hybrid plasma method, laser induced chemical vapor deposition (LICVD) and chemical vapor deposition (CVD). Liquid-phase methods include chemical deposition, hydrothermal, mic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/22
Inventor 朱俊杰许可
Owner NANJING UNIV
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