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Titanium barium phosphate salt, and preparation method and application thereof

A technology of barium titanium phosphate and barium titanium phosphate, which is applied in the field of inorganic scintillating luminescent materials, can solve problems such as unreported applications, and achieve the effects of simple preparation process, simple equipment, and safe operation

Inactive Publication Date: 2012-06-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on the preparation of barium titanium phosphate by melting recrystallization process and its application as a scintillator

Method used

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  • Titanium barium phosphate salt, and preparation method and application thereof
  • Titanium barium phosphate salt, and preparation method and application thereof
  • Titanium barium phosphate salt, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of Ba 2 TiP 2 o 9 , the steps include: weighing barium carbonate BaCO 3 : 7.89 g, Titanium Dioxide TiO 2 : 1.60 g, ammonium dihydrogen phosphate NH 4 h 2 (PO 4 ): 3.961 g, after grinding and mixing evenly, select the air atmosphere for the first calcination, the temperature is 300 ° C, the calcination time is 8 hours, then cool to room temperature, and take out the sample. Fully mix the mixture and grind it evenly, then calcine it for the second time in the air atmosphere, the temperature is 800°C, and the calcination time is 1.5 hours, then fully mix the mixture and grind it evenly, and then sinter it for the third time in the air atmosphere at 1550°C, the sintering time is 2 hours, and then cooled down to 900°C at a rate of 10°C per hour, and then automatically cooled down to room temperature to obtain bulk titanium barium phosphate scintillation materials.

[0034] See attached figure 1 , which is a comparison between the X-ray powder diffraction ...

Embodiment 2

[0040] Preparation of BaSrTiP 2 o 9 , the steps include: weighing barium carbonate BaCO 3 : 3.945 g, strontium carbonate SrCO 3 : 2.953 g, Titanium Oxide TiO 2 : 1.60 g, ammonium dihydrogen phosphate NH 4 h 2 (PO 4 ): 3.961 g, after grinding and mixing evenly, select the first calcination in the air atmosphere, the temperature is 350 ° C, the pre-sintering time is 6 hours, and cool to room temperature. Take out the sample, grind it thoroughly again and mix it evenly, calcinate it for the second time, and sinter it at 1500°C for 1.5 hours in an air atmosphere, then cool it down to 850°C at a rate of 15°C per hour, and then cool it down to room temperature automatically to get Bulk barium titanium phosphate scintillation material. The main structural properties, X-ray excitation spectrum, excitation spectrum and luminescence spectrum are similar to those of Example 1.

Embodiment 3

[0042] Preparation of Ba 1.9 Ca 0.1 TiP 2 o 9 , the steps include: weighing barium carbonate BaCO 3 : 3.551 g, calcium carbonate CaCO 3 : 0.2 g, titanium oxide TiO 2 : 1.60 g, ammonium dihydrogen phosphate NH 4 h 2 (PO 4 ): 3.961 grams, after grinding and mixing evenly, select the first calcining in the air atmosphere, the temperature is 450 ° C, the pre-sintering time is 6 hours, and cool to room temperature. Take out the sample, grind it thoroughly again and mix it evenly, calcinate for the second time, and sinter at 1500°C for 2 hours in an air atmosphere, then cool down to 800°C at a rate of 20°C per hour, and then cool automatically to room temperature, and you can get Bulk barium titanium phosphate scintillation material. The main structural properties, X-ray excitation spectrum, excitation spectrum and luminescence spectrum are similar to those of Example 1.

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Abstract

The invention discloses a titanium barium phosphate salt, and a preparation method and application thereof. A chemical formula of the titanium barium phosphate salt is Ba2-2xM2xTiP2-2yN2yO9, in the formula, M is divalent metal ions or trivalent rare earth elements; x is a mol percentage of M-substituted barium ion Ba2<+>, and x is more than or equal to 0.00001 but less than or equal to 0.5; N is one or more of vanadium ion V<5+>, zirconium ion Zr<4+>, tungsten ion W<5+> and molybdenum ion Mo<5+>; and y is the mol percentage of N-substituted phosphorus ion P<5+>, and y is more than or equal to 0.00001 but less than or equal to 0.5. The titanium barium phosphate salt is high in crystallinity, good in lighting quality, low in cost, simple in preparation process and free of pollution. Under exciting of X-ray, light output of Ba2TiP2O9 is equal to that of a commercial scintillator bismuth germinate Bi4Ge3O12; a lighting peak position is excellently matched with a photomultiplier tube; and the titanium barium phosphate salt can be used for detecting energetic particles, X-ray computer tomography, positron emission tomography technology, security checking, industrial detection and nuclear medical imaging.

Description

technical field [0001] The invention relates to a barium titanium phosphate salt and its preparation and application. It can be used as a scintillator matched with a photomultiplier tube, and can be used in high-energy particle detection, X-ray computerized tomography, positron emission tomography, safety inspection, High-energy physics, nuclear physics, industrial detection and nuclear medical imaging, etc., belong to the technical field of inorganic scintillation materials. Background technique [0002] Scintillation luminescent materials are a class of luminescent materials with high value and great economic benefits. They belong to a class of materials that can convert part of the absorbed energy into ultraviolet or visible light after being irradiated by X-rays, γ-rays and other high-energy rays. The greater the number of photons emitted by the scintillation material after receiving specific energy irradiation, the better, which helps to improve the accuracy of the dete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/71C09K11/81G21K4/00
Inventor 黄彦林王佳宇张素银朱睿杜福平
Owner SUZHOU UNIV
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