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Strontium europium-doped zinc germanate-based blue long-afterglow nano material

A nanomaterial, zinc germanate technology, applied in nanotechnology, luminescent materials, nanotechnology, etc., can solve the problems of long afterglow nanomaterials that have not been reported, long afterglow materials with uneven shape, long reaction time, etc., to achieve enhanced Effects of afterglow luminous time, improved afterglow performance, and uniform size distribution

Active Publication Date: 2022-03-08
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The preparation of long afterglow materials includes high temperature solid phase method, chemical co-precipitation method, sol-gel method, microwave synthesis method, combustion method and hydrothermal method, etc., but the long afterglow materials prepared by high temperature calcination have uneven morphology, dispersed Poor properties, easy to agglomerate, and the preparation by hydrothermal method requires a long reaction time, which limits its application
At present, long afterglow materials are mostly prepared by high-temperature calcination and hydrothermal methods, and microwave synthesis of Zn doped with strontium and europium 2 GeO 4 The study of base blue long-lasting nanomaterials has not been reported yet

Method used

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  • Strontium europium-doped zinc germanate-based blue long-afterglow nano material
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  • Strontium europium-doped zinc germanate-based blue long-afterglow nano material

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preparation example Construction

[0040] The preparation method of the nanomaterial includes the following steps:

[0041] (1) Put GEO 2 Powder is dissolved in NaOH solution having a concentration of 1 mol / l to 2 mol / L, GEO 2 The molar ratio of NaOH is 1: 2, get NA 2 GEO 3 Solution.

[0042] (2) Zinc salt, bismuth nitrate, nitrate, by 1.98: 0.005 to 0.02: 0.01 to 0.03, is dissolved in concentrations of 14.4 mol / l to 15.2 mol / l, resulting in a mixed solution; zinc salt is zinc nitrate .

[0043] (3) 2 GEO 3 Solution dropped into the mixed solution, mixed uniformly obtained a transparent colorless mixed precursor solution.

[0044] ⑷ The mixed precursor solution was added to the NaOH solution of 1 mol / l to 2 mol / L of the NaOH solution to neutralize the milky white suspension.

[0045] ⑸ When the suspension is at 20 to 30 ° C, the ultrasonic stirring reaction is 15 to 30 minutes, and the reaction is reacted in the microwave digestometer, the microwave digestive reaction conditions refer to the power of 40...

Embodiment 1

[0049] Example 1 One kind of ruthenium doped Zn 2 GEO 4 Blue long ginner material, chemical composition is: Zn 2 GEO 4 : XSR 2+ Yeu 3+ , X = 0.005 ~ 0.02, y = 0, the preparation method thereof is as follows:

[0050] (1) 230.2mg Geo will 2 The powder is dissolved in a NaOH solution having a concentration of 2 mol / L to obtain NA 2 GEO 3 Solution.

[0051] (2) 1.178 g of Zn (NO) was added to concentration of 600 μl of concentration of 14.4 mol / l to 15.2 mol / L (NO 3 ) 2 · 6h 2 O, 2 ~ 4mg SR (NO 3 ) 2 Mixed mixed solution under magnetic stirring to give a mixed solution.

[0052] (3) 2 GEO 3 The solution was slowly added to the mixed solution, mixed uniformly to give a transparent colorless mixed precursor solution.

[0053] ⑷ The mixed precursor solution is added to the NaOH solution of 1 mol / L to adjust the pH to neutralize the milky white suspension.

[0054] ⑸ The suspension is placed in the container for 30 min for 30 min for 30 min, and the microwave digestive reaction c...

Embodiment 2

[0055] Example 2 One ruthenium doped Zn 2 GEO 4 Blue long ginner material, chemical composition is: Zn 2 GEO 4 : XSR 2+ Yeu 3+ , X = 0.005, y = 0.01 ~ 0.03. The preparation method is as follows:

[0056] (1) 2 GEO 3 Solution is prepared in Example 1.

[0057] (2) 1.178 g of Zn (NO) was added to concentration of 600 μl of concentration of 14.4 mol / l to 15.2 mol / L (NO 3 ) 2 · 6h 2 O, 2MG SR (NO 3 ) 2 4.5 ~ 13.4mg EU (NO 3 ) 3 · 6h 2 O, mixed with mixed solution under magnetic stirring to give a mixed solution.

[0058] (3) 2 GEO 3 The solution was slowly added to the mixed solution, mixed uniformly to give a transparent colorless mixed precursor solution.

[0059] ⑷ The mixed precursor solution is added to the NaOH solution of 1 mol / L to adjust the pH to neutralize the milky white suspension.

[0060] ⑸ The suspension is placed in the container for 30 min for 30 min for 30 min, and the microwave digestive reaction conditions refer to the power of 800 W, and the temperature is ...

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Abstract

The invention relates to a strontium-europium-doped zinc germanate-based blue long-afterglow nano material. The nano material is synthesized by using Zn2GeO4 as a matrix, Sr < 2 + > as a luminescence center and Eu < 3 + > as a trap modulator through a microwave method; the chemical composition general formula is Zn2GeO4: xSr < 2 + >, yEu < 3 + >, in the formula, x is greater than or equal to 0.005 and less than or equal to 0.02, and y is less than or equal to 0.03. The obtained material has good dispersity and uniformity and is easy to modify, the afterglow performance can be improved, the afterglow luminescence time is prolonged, and the problems that due to high-temperature calcination, agglomeration is prone to occurring, the particle size is not uniform, and due to a hydrothermal method, the reaction time is long are solved; the fluorescent probe can be applied to autofluorescence biosensing, high signal-to-noise ratio, high-sensitivity living imaging and medical diagnosis.

Description

Technical field [0001] The present invention relates to the field of long-term ginseng light-emitting techniques, and more particularly to zinc-doped zinc-doped zinc (Zn 2 GEO 4 Alkali blue long resort. Background technique [0002] Nano probes are very attractive for tumors diagnosis and treatment because they have a powerful advantage in observing lesions, accurately attacking tumors and reducing side effects. A variety of optical materials such as quantum dots, upper conversion nanoparticles and fluorescent silicon nanoparticles have been applied as a nano-probe to clinical diagnosis and treatment. However, conventional fluorescent nano probes require real-time light excitation, and is susceptible to spontaneous fluorescence interference and tissue damage. [0003] Longhui nanoparticles (Persistent Luminescence NanopArticles, PLNPS), also known as persistent luminous nanoparticles, is a very promising optical material that stores energy from the excitation source and continuou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66B82Y30/00B82Y40/00
CPCC09K11/7735B82Y30/00B82Y40/00
Inventor 孟哲王迎辉郭信彭媛
Owner NINGXIA UNIVERSITY