Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of x-ray activated ultra-long ultraviolet long afterglow luminescent material and its preparation method and application

A luminescent material and X-ray technology, applied in the field of ultra-long ultraviolet long afterglow luminescent material and its preparation, can solve the problems of lack of high-efficiency ultraviolet afterglow performance materials, limit the practical application of ultraviolet afterglow materials, weak radiation damage, etc., and achieve easy scale Industrial production, low synthesis cost and simple process

Active Publication Date: 2021-11-16
SUN YAT SEN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, because in biological environment (such as human tissue) and catalytic environment (such as water medium) and other applications require excitation light source with high penetrating ability, low-power X-rays have strong penetrating ability and weak has been widely used as an excitation light source for ultraviolet afterglow luminescent materials due to radiation damage, and Cs has been reported in recent years 2 NaYF 6 :Pr, LaPO 4 : Pr and other X-ray activated UV afterglow materials, but there is still a lack of materials with high-efficiency UV afterglow properties, which limits the practical application of UV afterglow materials in the fields of catalysis and biomedicine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of x-ray activated ultra-long ultraviolet long afterglow luminescent material and its preparation method and application
  • A kind of x-ray activated ultra-long ultraviolet long afterglow luminescent material and its preparation method and application
  • A kind of x-ray activated ultra-long ultraviolet long afterglow luminescent material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment provides an ultraviolet long afterglow luminescent material La 0.9995 Bi 0.0005 GaO 3 (doped Sb 3+ The amount is 0), and its preparation method is as follows: According to the above material composition design, the matrix is ​​LaGaO 3 , doped ion Bi 3+ The doping amount is 0.05mol%, accurately weigh lanthanum oxide (La 2 o 3 ), gallium oxide (Ga 2 o 3 ) and bismuth oxide (Bi 2 o 3 ), according to the stoichiometric ratio of each constituent element, respectively weigh three kinds of compound raw materials, the molar ratio of each element is La:Ga:O:Bi=0.9995:1:3:0.0005, and the corresponding product is LaGaO 3 :0.05% Bi 3+ .

[0040] Put the above raw materials in an agate mortar, then add a small amount of ethanol to grind for about 1 hour, mix the raw materials thoroughly, then transfer them to a corundum crucible, and pre-fire them at 900°C for 5 hours. After the pre-fired powder was re-ground, it was burned again at 1350°C for 10 hours, a...

Embodiment 2

[0042] This embodiment provides an ultraviolet long afterglow luminescent material La 0.999 Bi 0.001 GaO 3 (doped Sb 3+ The amount is 0), and its preparation method is as follows: According to the above material composition design, the matrix is ​​LaGaO 3 , doped ion Bi 3+ The doping amount is 0.1mol%, accurately weigh lanthanum oxide (La 2 o 3), gallium oxide (Ga 2 o 3 ) and bismuth oxide (Bi 2 o 3 ), according to the stoichiometric ratio of each constituent element, respectively weigh three kinds of compound raw materials, the molar ratio of each element is La:Ga:O:Bi=0.999:1:3:0.001, and the corresponding product is LaGaO 3 :0.1% Bi 3+ .

[0043] Put the above raw materials in an agate mortar and then add a small amount of ethanol to grind for about 1 hour. After the raw materials are fully mixed, move them to a corundum crucible and pre-fire at 1000 ° C for 5 hours. After re-grinding the pre-fired powder, it was fired again at 1350°C for 8 hours, then cooled to...

Embodiment 3

[0045] This embodiment provides an ultraviolet long afterglow luminescent material La 0.99 Bi 0.01 GaO 3 (doped Sb 3+ The amount is 0), and its preparation method is as follows: According to the above material composition design, the matrix is ​​LaGaO 3 , doped ion Bi 3+ The doping amount is 1mol%, accurately weigh lanthanum oxide (La 2 o 3 ), gallium oxide (Ga 2 o 3 ) and bismuth oxide (Bi 2 o 3 ), according to the stoichiometric ratio of each constituent element, three kinds of compound raw materials were weighed respectively, and the molar ratio of each element was La:Ga:O:Bi=0.99:1:3:0.01, and the corresponding product was LaGaO 3 :1%Bi 3+ .

[0046] Put the above raw materials in an agate mortar, then add a small amount of ethanol to grind for about 1 hour, mix the raw materials thoroughly, then transfer them to a corundum crucible, and pre-fire them at 900°C for 5 hours. After the pre-fired powder was re-ground, it was burned again at 1300°C for 10 hours, the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention involves a super -long UV glowing material and their preparation methods and applications that have an X -ray activation.The chemical group of the ultra -long UV glowing material has become LA 1‑x BI x GA 1‑y SB y O 3 Among them, 0 <x ≤ 0.02, 0 ≤Y ≤ 0.01.The super -long UV glowing material activated by the present invention, with LAGAO 3 As a matrix, doped ion BI 3+ To activate ions, mix SB together 3+ Optimize the performance of the surplus; the obtained UV glowing materials can be effectively stimulated by X -rays, generating the surplus of 372nm, and the afterglow time is up to 2000 hours. It is expected to have a huge driving force in the research and application field of ultraviolet materials.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to an X-ray activated ultra-long ultraviolet long afterglow luminescent material and a preparation method and application thereof. Background technique [0002] Long afterglow materials are materials that can still be observed to continuously emit light after being excited by an external excitation source (such as X-ray excitation, ultraviolet light excitation, visible light excitation or electron beam excitation, etc.) for a period of time, and the time for continuous emission in different materials From seconds to weeks. So far, long-lasting luminescent materials have been widely used in many fields such as security display, instrumentation display, biological diagnosis and treatment, and information encryption. [0003] At present, research on long-lasting luminescent materials mainly focuses on long-lasting luminescent materials in the visible and near...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/80
CPCC09K11/7701
Inventor 王静刘伯梅
Owner SUN YAT SEN UNIV