Preparation method of bowknot-shaped europium-doped sodium tetrafluoro gadolinium red luminescent nano material

A technique for sodium europium tetrafluorogadolinium and nanomaterials, which is applied in the field of preparation of bow-tie-shaped europium-doped sodium tetrafluorogadolinium red luminescent nanomaterials

Inactive Publication Date: 2014-07-09
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

At present, no bowtie-shaped NaGdF has been prepared using DNA as a template 4 :Eu 3+ report on nanomaterials

Method used

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  • Preparation method of bowknot-shaped europium-doped sodium tetrafluoro gadolinium red luminescent nano material
  • Preparation method of bowknot-shaped europium-doped sodium tetrafluoro gadolinium red luminescent nano material
  • Preparation method of bowknot-shaped europium-doped sodium tetrafluoro gadolinium red luminescent nano material

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Embodiment

[0023] Example: Weigh 0.06g herring essence DNA and dissolve it in 25ml deionized water to obtain a DNA aqueous solution with a concentration of 3mg / ml; weigh 0.0350g europium oxide Eu2 o 3 , with HNO 3 Dissolved and evaporated to give Eu(NO 3 ) 3 Crystal, add 40ml deionized water, then add 1.7152g Gd(NO 3 ) 3 ·6H 2 O, after complete dissolution, [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 ] mixed clear aqueous solution, where Gd 3+ with Eu 3+ The molar ratio is 95:5; the herring sperm DNA solution is added to [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 ] in the mixed solution, forming [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 + herring sperm DNA] mixed solution; to the [Gd(NO 3 ) 3 +Eu(NO 3 ) 3 + herring essence DNA] dropwise add 20ml aqueous solution containing 2.016g NaF to the mixed solution to get NaGdF 4 :5%Eu 3+ precipitation; the NaGdF 4 :5%Eu 3+ The precipitate was transferred to two 50ml hydrothermal reaction kettles, and the hydrothermal reaction kettle was placed in a drying oven, and reacte...

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Abstract

The invention relates to a preparation method of a bowknot-shaped europium-doped sodium tetrafluoro gadolinium red luminescent nano material and belongs to the technical field of nano materials. The preparation method comprises three steps: firstly, preparing a mixed solution; dissolving Eu2O3 with nitric acid and evaporating to obtain Eu(NO3)3, adding deionized water and Gd(NO3)3.6H2O to obtain a [Gd(NO3)3+Eu(NO3)3] mixed solution; and dropping DNA (Deoxyribose Nucleic Acid) aqueous solution of herring sperm into the [Gd(NO3)3+Eu(NO3)3] mixed solution to form a [Gd(NO3)3+Eu(NO3)3+ herring sperm DNA] mixed solution; secondly, preparing NaGdF4:5 percent Eu3 and precipitation: dropping an aqueous water of NaF into the mixed solution to obtain the NaGdF4:5 percent Eu3 and precipitation; and thirdly, preparing a bowknot-shaped NaGdF4:5 percent Eu3 red luminescent nano material: transferring the NaGdF4:5 percent Eu3 and precipitation into a hydrothermal reactor and reacting at 160DEG C for 16h; taking out the reactor and then naturally cooling a room temperature; and continuously ageing for 12h to obtain the bowknot-shaped NaGdF4:5 percent Eu3 red luminescent nano material with favorable crystallinity, wherein the length of the bowknot-shaped NaGdF4:5 percent Eu3 red luminescent nano material is 864+ / -38nm; the diameter of the bowknot is 242+ / -8nm; and the diameter of each nanorod in the bowknot-shaped nano material is 98+ / -10nm. The preparation method has the advantages of simplicity, feasibility, economy, environment friendliness and broad application prospect.

Description

technical field [0001] The invention relates to the field of preparation and research of nanometer materials, in particular to a method for preparing bowtie-shaped red luminous nanomaterials doped with europium tetrafluorogadolinium sodium. Background technique [0002] Rare earth tetrafluoride is one of the current efficient rare earth ion-doped luminescent hosts due to its abundant 4f energy level and low phonon energy. Europium-doped sodium tetrafluorogadolinium NaGdF 4 :Eu 3+ It is an important red luminescent material with important applications. NaGdF has been prepared by precipitation method, sol-gel method, microemulsion method, precursor pyrolysis method, hydrothermal and solvothermal method, polyol method, high boiling point coordination solvent method, electrospinning method, etc. 4 :Eu 3+ Nanocrystals, nanorods, flakes, hollow tubular structures, nanowires, spindles and other nanomaterials. Bow-tie doped europium tetrafluorogadolinium sodium NaGdF 4 :Eu 3+...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/85
Inventor 董相廷王姝王进贤于文生于源华刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH
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