Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cr<3+>-doped zinc gallate near-infrared long-afterglow luminescent nanoparticles and preparation method

A nanoparticle, zinc gallate technology, applied in luminescent materials, luminescent coatings, chemical instruments and methods, etc., can solve the problems affecting the application of near-infrared long afterglow luminescent nanomaterials, serious agglomeration of long afterglow nanoparticles, and complicated preparation steps. , to achieve the effect of easy large-scale promotion and use, low cost of raw materials, and low reaction temperature

Inactive Publication Date: 2017-02-22
SHANDONG UNIV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The currently reported near-infrared long-lasting luminescent nanomaterials are generally prepared by high-temperature solid-phase method and sol-gel method. These methods have the disadvantages of cumbersome preparation steps, long time required, high preparation temperature, and the obtained long-lasting nanoparticles are seriously agglomerated and grainy. Shortcomings such as large diameters have affected the further application of near-infrared long-lasting luminescent nanomaterials

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
  • Cr&lt;3+&gt;-doped zinc gallate near-infrared long-afterglow luminescent nanoparticles and preparation method
  • Cr&lt;3+&gt;-doped zinc gallate near-infrared long-afterglow luminescent nanoparticles and preparation method
  • Cr&lt;3+&gt;-doped zinc gallate near-infrared long-afterglow luminescent nanoparticles and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 10ml 0.1mol / L Zn(NO 3 ) 2 Solution, 19.95ml 0.1mol / L Ga(NO 3 ) 3 solution, 0.1ml 0.05mol / L Cr(NO 3 ) 3 solution, after stirring, the reactant nitrate mixture was obtained. Then add 0.2459g glycine and 0.1180g carbohydrazide to the above mixed solution as organic fuel. Evaporate slowly in a water bath at 80°C until the mixed solution becomes a uniform and transparent sol. Put the above sol into a muffle furnace with a furnace temperature of 600°C to ignite, and the combustion reaction is completed rapidly within tens of seconds, and a white fluffy product is obtained. Transfer the above white product into an agate mortar, add 5mmol / L sodium hydroxide solution and grind it thoroughly for 1h. Add the ground mixed slurry into distilled water and ultrasonically treat it for 1 hour. The mass ratio of distilled water to white product is 1000:1. After standing still for 72 hours, take the supernatant and centrifuge at 10000 rpm for 10 minutes at a high speed to obtai...

Embodiment 2

[0046] Add 10ml Zn(NO 3 ) 2 solution, 19.98ml Ga(NO 3 ) 3 solution, 0.04ml Cr(NO 3 ) 3 solution, after stirring, the reactant nitrate mixture was obtained. Then add 0.2459g glycine and 0.1180g carbohydrazide to the above mixed solution as organic fuel. Evaporate slowly in a water bath at 80°C until the mixed solution becomes a uniform and transparent sol. Put the above sol into a muffle furnace with a furnace temperature of 500°C to ignite, and the combustion reaction is completed rapidly within tens of seconds, and a white fluffy product is obtained. Transfer the above white product into an agate mortar, add 5mmol / L sodium hydroxide solution and grind it thoroughly for 1h. Add the ground mixed slurry into distilled water and ultrasonically treat it for 1 hour. The mass ratio of distilled water to white product is 1000:1. After standing for 72 hours, take the supernatant and centrifuge at 10,000 rpm for 10 minutes to obtain near-infrared particles with an average partic...

Embodiment 3

[0048] Add 10ml Zn(NO 3 ) 2 solution, 19.9ml Ga(NO 3 ) 3 solution, 0.2ml Cr(NO 3 ) 3 solution, after stirring, the reactant nitrate mixture was obtained. Then add 0.2459g glycine and 0.1180g carbohydrazide to the above mixed solution as organic fuel. Evaporate slowly in a water bath at 80°C until the mixed solution becomes a uniform and transparent sol. Put the above sol into a muffle furnace with a furnace temperature of 700°C to ignite, and the combustion reaction is completed rapidly within tens of seconds, and a white fluffy product is obtained. Transfer the above white product into an agate mortar, add 5mmol / L sodium hydroxide solution and grind it thoroughly for 1h. Add the ground mixed slurry into distilled water and ultrasonically treat it for 1 hour. The mass ratio of distilled water to white product is 1000:1. After standing for 72 hours, take the supernatant and centrifuge at 10,000 rpm for 10 minutes to obtain near-infrared particles with an average particle...

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 discloses Cr<3+>-doped zinc gallate near-infrared long-afterglow luminescent nanoparticles and a preparation method. The nanoparticles have the atom composition of ZnGaxCryO4, wherein x is in a range of 1.98-2.00, and y is in a range of 0.001-0.02; the particle size is 50-100 nm, 2E-to-4A2 broadband transmission of Cr<3+> is generated, the broadband transmission peak ranges from 600 nm to 850 nm, and the peak value is located at 690-715 nm. The prepared long-afterglow luminescent material has the good properties that the particle size is small, the transmission range is located in a near-infrared light zone, and the afterglow time is long. In the preparation method, the cost of raw materials is low, the method is simple and easy to implement, the reaction temperature is low, requirements for equipment are low, no byproducts are produced and large-scale popularization and utilization are facilitated.

Description

technical field [0001] The invention belongs to the field of preparation of long afterglow luminescent materials, in particular to a Cr 3+ Doped zinc gallate near-infrared long-lasting luminescent nanoparticles and a preparation method thereof. Background technique [0002] Long afterglow luminescence refers to the phenomenon that the material can continue to emit light after the excitation of the external excitation source (such as: ultraviolet rays, X-rays, γ-rays, visible natural light, etc.) stops. The duration of the luminescence varies from a few seconds to several weeks. Wait. Materials with such luminescent properties are usually called long-lasting luminescent materials. So far, long afterglow luminescent materials have been widely used in many fields such as safety display, road indication, instrument display, appearance decoration, and night indication. Every potential application of a long-lasting luminescent material requires a specific emission wavelength. ...

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
IPC IPC(8): C09K11/62G01N33/58C09D5/22C09D7/12A61K49/00
CPCA61K49/0013A61K49/0093C09D5/22C09K11/682C09D7/61C09D7/67G01N33/582
Inventor 梁延杰孙康宁
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com