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A high-sensitivity rare earth-doped tungsten bronze fluorescent temperature detection material

A rare earth doping, high-sensitivity technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of low temperature detection sensitivity and unfavorable material application, etc.

Active Publication Date: 2020-08-18
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature detection sensitivity of the above materials is still low, which is not conducive to the practical application of the materials.

Method used

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  • A high-sensitivity rare earth-doped tungsten bronze fluorescent temperature detection material
  • A high-sensitivity rare earth-doped tungsten bronze fluorescent temperature detection material
  • A high-sensitivity rare earth-doped tungsten bronze fluorescent temperature detection material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of Ba 4 Gd 0.65-x Er 0.02 Yb x Nb 10 o 30 , where x=0, the preparation method is as follows:

[0015] Weigh 2.3920 g BaCO 3 (99%), 0.3534 g Gd 2 o 3 (99.9%), 0.0115 grams of Er 2 o 3 , 3.9872 g Nb 2 o 5 , placed in a clean agate jar, using absolute ethanol (99.7%) as a medium, and ball milling on a planetary ball mill for 24 hours. The ball-milled product is dried in an oven to obtain a dried powder. Grind the dried powder with an agate mortar, then place it in a corundum crucible, put it into a box furnace, and heat it up to 1300°C for 8 hours for pre-burning, and then stop the program after cooling down to 550°C. Grind the product obtained after cooling with the furnace with an agate mortar, add binder, grind thoroughly, mix evenly, then place it in a corundum crucible and calcine at 1350°C in the air for 5 hours, and finally grind it finely with an agate mortar to obtain upconversion Phosphor.

Embodiment 2

[0017] Preparation of Ba 4 Gd 0.65-x Er 0.02 Yb x Nb 10 o 30 , wherein x=0.1, the preparation method is as follows:

[0018] Weigh 2.3920 g BaCO 3 (99%), 0.3534 g Gd 2 o 3 (99.9%), 0.0115 grams of Er 2 o 3 , 0.0591 g Yb 2 o 3 , 3.9872 g Nb 2 o 5 , placed in a clean agate jar, using absolute ethanol (99.7%) as a medium, and ball milling on a planetary ball mill for 24 hours. The ball-milled product is dried in an oven to obtain a dried powder. Grind the dried powder with an agate mortar, then place it in a corundum crucible, put it into a box furnace, and heat it up to 1300°C for 8 hours for pre-burning, and then stop the program after cooling down to 550°C. Grind the product obtained after cooling with the furnace with an agate mortar, add binder, grind thoroughly, mix evenly, then place it in a corundum crucible and calcine at 1350°C in the air for 5 hours, and finally grind it finely with an agate mortar to obtain upconversion Phosphor.

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Abstract

The invention discloses a rare earth-doped tungsten bronze fluorescence temperature detection material with high sensitivity and a preparation method thereof. The rare earth-doped tungsten bronze material has a chemical formula as Ba4Gd[0.65-x]Er0.02YbxNb10O30, wherein x is equal to 0,0.02,0.05,0.1. The Ba4Gd[0.65-x]Er0.02YbxNb10O30 material is prepared by adopting a traditional high temperature solid state reaction method, so that the material is simple in process, low in cost, good in repeatability, and convenient for batch production. Compared with former up-conversion temperature detection materials, the Ba4Gd[0.65-x]Er0.02YbxNb10O30 material is the fluorescence intensity ratio type temperature detection material with high sensitivity, and has the maximum temperature detection sensitivity at 573K being 0.013K<-1>. The research shows that rare earth Yb ion doping can be beneficial to effectively improving a temperature detection performance of the Ba4Gd[0.65-x]Er0.02YbxNb10O30 material. In addition, the Ba4Gd[0.65-x]Er0.02YbxNb10O30 material prepared by the invention has stable physical and chemical properties, does not contain metal elements unfriendly to the environment, is the green and environment-friendly temperature detection material, and has a wide industrial application prospect.

Description

technical field [0001] The invention relates to the field of up-conversion fluorescent temperature detection materials, in particular to a high-sensitivity rare earth-doped tungsten bronze fluorescent temperature detection material and a preparation method thereof. Background technique [0002] Due to its wide application in important fields such as environmental science, electronics industry, biomedicine, and agricultural production, the design and development of high-sensitivity fluorescent temperature detection materials is one of the important areas that current researchers are concerned about. In recent years, rare earth-doped upconversion luminescent materials have attracted special attention due to their broad application prospects in the field of temperature sensing. At present, the temperature detection performance of many rare earth-doped inorganic materials with fluorescence intensity ratio has been studied and reported, such as Er and Yb co-doped α-NaYF under nea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
CPCC09K11/7703
Inventor 魏通谢一帆董泽
Owner CIVIL AVIATION UNIV OF CHINA
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