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A kind of bismuth layered multifunctional material doped with rare earth elements and its preparation method

A rare earth element and bismuth layered technology, which is applied in the field of luminescent materials and ferroelectric/piezoelectric materials, achieves the effects of high sensitivity, stable process and broad application prospects

Inactive Publication Date: 2020-10-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, doping Bi with rare earth and transition elements 3 Ti 1.5 W 0.5 o 9 No report on upconversion luminescence and temperature sensing properties of bismuth layered ferroelectric / piezoelectric materials

Method used

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  • A kind of bismuth layered multifunctional material doped with rare earth elements and its preparation method
  • A kind of bismuth layered multifunctional material doped with rare earth elements and its preparation method
  • A kind of bismuth layered multifunctional material doped with rare earth elements and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0028] Preparation of Bi by solid phase method 2.88-x Er 0.03 Yb 0.09 La x Ti 1.5 W 0.5 o 9 Ceramic material, the preparation method is as follows:

[0029] Using high-purity bismuth trioxide (Bi 2 o 3 , 99.5%), titanium dioxide (TiO 2 , 99.99%), Erbium trioxide (Er 2 o 3 , 3N), ytterbium trioxide (Yb 2 o 3 , 3N), tungsten trioxide (WO 3 , 99.8%), lanthanum trioxide (La 2 o 3 , 99.99%) as the raw material, weigh the raw material according to the stoichiometric ratio, put it into an agate mortar, mix it evenly with alcohol as a solvent, and grind it for 3 hours, and put the powder obtained after drying the alcohol into a muffle furnace in the air Pre-fired, the pre-fired temperature is 750°C, the heating rate is 3°C / min, keep the temperature for 4 hours, and then cool down with the furnace to obtain the pre-fired powder. Put the calcined powder into an agate mortar and add an appropriate amount of absolute ethanol and grind it for 2 hours to dry powder. Add an ...

Embodiment 2

[0031] Preparation of Bi by solid phase method 2.97-y Er 0.03 Yb y Ti 1.5 W 0.5 o 9 Ceramic material, the preparation method is as follows:

[0032] Using high-purity bismuth trioxide (Bi 2 o 3 , 99.5%), titanium dioxide (TiO 2 99.99%), Erbium trioxide (Er 2 o 3 , 3N), ytterbium trioxide (Yb 2 o 3 , 3N), tungsten trioxide (WO 3 , 99.8%) as the raw material, weigh the raw material according to the stoichiometric ratio, put it into an agate mortar, mix it evenly with alcohol as a solvent, and grind it for 3.5 hours, and put the powder obtained after drying the alcohol into a muffle furnace in the air Pre-fired, the pre-fired temperature is 750°C, the heating rate is 3°C / min, keep the temperature for 4 hours, and then cool down with the furnace to obtain the pre-fired powder. Put the calcined powder into an agate mortar and add an appropriate amount of absolute ethanol and grind it for 2 hours to dry powder. Add an appropriate amount of polyvinyl alcohol (PVA) with ...

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Abstract

The invention discloses rare earth element-doped bismuth layer-structured multifunctional materials and a preparation method thereof. The general chemical formula of the multifunctional materials is Bi(3-x-y-z)ErxYbyRzTi(1.5-0.5x1)W(0.5-0.5x1-x2)Mx1Mox2Ox3, wherein x is more than 0 and not more than 40 mol%, y is not less than 0, z is not less than 0 and not more than 40 mol%, x1 and x2 are more than 0 and not more than 30 mol%, x3 is not less than 8 and not more than 10, R is one or more of La, Li, Ce, Pr and Y, and M is one or more of Nb, Ta, Zr, Hf, Cr and Mn. The multifunctional materials prepared in the invention have the advantages of good ferroelectric / piezoelectric properties, high Curie point, high high-temperature thermal stability, high chemical durability, excellent up-conversion luminescence performance, excellent optical temperature sensing performance, high sensitivity and wide application temperature range, and has wide application prospects in the fields of optical temperature sensor, bio-molecular fluorescence labeling, infrared detection and anti-fake, luminescence displays and photoelectric integration.

Description

technical field [0001] The invention relates to a bismuth layered multifunctional material doped with rare earth elements and a preparation method thereof, belonging to the technical field of luminescent materials and ferroelectric / piezoelectric materials. Background technique [0002] Temperature is one of the most fundamental physical quantities. The measurement of temperature is closely related to scientific research, industrial production and human's daily life. Following 1937, Nuebert proposed the idea of ​​using this property of luminescent materials to measure temperature when studying the relationship between fluorescence loss and temperature. Nowadays, optical temperature sensing has become the focus of attention and research hotspot because of its incomparable advantages. The earliest report on the phenomenon of upconversion luminescence appeared in 1959. Then, in 1966, when F.E. Auzel was studying ytterbium sodium tungstate glass, he accidentally discovered tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78G01K11/20G01N21/64C04B35/453C04B35/622
CPCC04B35/453C04B35/622C04B2235/3224C04B2235/3227C04B2235/3232C04B2235/3258C04B2235/661C09K11/7794G01K11/20G01N21/6486
Inventor 王旭升张颖李俊柴晓娜李艳霞
Owner TONGJI UNIV
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