Rare earth doped up-conversion luminescent material with excellent damp-proof property and preparation method thereof

A moisture-proof performance, rare earth doping technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problem of disappearance of negative thermal expansion performance, and achieve the effect of high quenching concentration and good chemical stability

Inactive Publication Date: 2020-02-28
JIANGSU UNIV OF TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current study found that in A 2 (MO 4 ) 3 series of compounds, when the ion radius of A is larger, such as Y 2 (MoO 4 ) 3 , the material has strong water absorption, this strong absorption of water will lead to the disappearance of negative thermal expansion properties

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
  • Rare earth doped up-conversion luminescent material with excellent damp-proof property and preparation method thereof
  • Rare earth doped up-conversion luminescent material with excellent damp-proof property and preparation method thereof
  • Rare earth doped up-conversion luminescent material with excellent damp-proof property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Sc prepared in this example 1.6 Er 0.04 Yb 0.36 Mo 3 O 12 The material process is as follows:

[0033] 1) Follow Sc 1.6 Er 0.04 Yb 0.36 Mo 3 O 12 Mol ratio, weighed Sc 2 O 3 , Yb 2 O 3 , MoO 3 , Er 2 O 3 For each suitable quality, grind 2-3 times with absolute ethanol to make it evenly mixed;

[0034] 2) After grinding, the sample is placed in an oven at 80 degrees Celsius for two hours to dry, and then the powder is placed in the corundum boat, and then the corundum boat with medicines is placed in a high-temperature furnace, kept at 500 degrees Celsius in an air atmosphere for 6 hours, and then cooled naturally To room temperature

[0035] 3) Take out the sample from the high-temperature furnace, grind it with alcohol 2-3 times, and then dry it;

[0036] 4) Finally, put the dried sample into a corundum boat, put it in a high-temperature furnace, slowly raise the temperature to 900 degrees Celsius in an air atmosphere, keep it for 6 hours, then cool it naturally, and take it...

Embodiment 2

[0038] Sc prepared in this example 1.6 Ho 0.04 Yb 0.36 Mo 3 O 12 The material process is as follows:

[0039] 1) Follow Sc 1.6 Ho 0.04 Yb 0.36 Mo 3 O 12 Mol ratio, weighed Sc 2 O 3 , Yb 2 O 3 , MoO 3 , Ho 2 O 3 For each suitable quality, grind 2-3 times with absolute ethanol to make it evenly mixed;

[0040] 2) After grinding, the sample is placed in an oven at 80 degrees Celsius for two hours to dry, and then the powder is placed in a corundum boat. Put the corundum boat with medicines into a high-temperature furnace, keep it at 500 degrees Celsius in an air atmosphere for 6 hours, and then naturally cool to room temperature;

[0041] 3) Take out the sample from the high-temperature furnace, grind it with alcohol 2-3 times, and dry it;

[0042] 4) Finally, put the dried sample in a corundum boat, put it in a high-temperature furnace, slowly raise the temperature to 900 degrees Celsius in an air atmosphere, keep it for 6 hours, then cool it naturally, and take it out for use.

Embodiment 3

[0044] Sc prepared in this example 1.6 Tm 0.04 Yb 0.36 Mo 3 O 12 The material process is as follows:

[0045] 1) Follow Sc 1.6 Tm 0.04 Yb 0.36 Mo 3 O 12 Mol ratio, weighed Sc 2 O 3 , Yb 2 O 3 , MoO 3 , Tm 2 O 3 For each suitable quality, grind 2-3 times with absolute ethanol to make it evenly mixed;

[0046] 2) After grinding, the sample is placed in an oven at 80 degrees Celsius for two hours to dry, and then the powder is placed in a corundum boat. Put the corundum boat with medicines into a high-temperature furnace, keep it at 500 degrees Celsius in an air atmosphere for 6 hours, and then naturally cool to room temperature;

[0047] 3) Take out the sample from the high-temperature furnace, grind it with alcohol 2-3 times, and dry it;

[0048] 4) Finally, put the dried sample in a corundum boat, put it in a high-temperature furnace, slowly raise the temperature to 900 degrees Celsius in an air atmosphere, keep it for 6 hours, then cool it naturally, and take it out for use.

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 belongs to the technical field of up-conversion luminescent materials, and specifically relates to a rare earth doped up-conversion luminescent material with an excellent damp-proof property and a preparation method thereof. The chemical formula of the up-conversion luminescent material is Sc<2-2x>Ln<2x>M<3>O<12>, Ln represents one or more of Er, Ho, Tm, Yb, Gd, and Dy, M representsMo or W, and 0<x<=0.40. The prepared up-conversion luminescent material has a negative thermal expansion performance and has different properties compared with a conventional material; as the temperature rises, the emitted light is enhanced; and a possible material and research idea are provided for modulating the light emitting strength at will through temperature adjustment.

Description

Technical field [0001] The invention belongs to the technical field of up-conversion luminescent materials, and specifically relates to a rare-earth-doped up-conversion luminescent material with excellent moisture resistance and a preparation method thereof. Background technique [0002] In recent years, due to the thermal expansion and contraction properties of common materials, which have the special properties of thermal contraction and cold expansion, the research of negative thermal expansion materials has attracted widespread attention from all countries (Xiansheng Liu et al., Journal of alloys and compounds, 2019,776,236-241) . At present, several types of substances have been found to have a negative thermal expansion effect, such as an open skeleton structure and the general chemical formula is AM 2 O 8 , AM 2 O 7 And A 2 (MO 4 ) 3 Series of compounds. Among them, especially with A 2 (MO 4 ) 3 The series of compounds have attracted the most attention, mainly due to thei...

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 Applications(China)
IPC IPC(8): C09K11/78
CPCC09K11/7776
Inventor 邹华黄玉凤王锋陈冰胡益丰朱小芹
Owner JIANGSU UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap