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A preparation method of co-doped metal ions that regulates the morphology of rare earth up-conversion nanomaterials

A rare earth up-conversion and nanomaterial technology, which is applied in the field of preparation of co-doped metal ions, can solve problems such as limitation, and achieve the effect of good size

Active Publication Date: 2019-11-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the co-doping of divalent manganese ions and ferric ions can regulate the morphology of rare earth upconversion luminescent nanoparticles to a certain extent, manganese ions are heavy metal ions, so the application of this material in the biomedical field will be limited.

Method used

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  • A preparation method of co-doped metal ions that regulates the morphology of rare earth up-conversion nanomaterials
  • A preparation method of co-doped metal ions that regulates the morphology of rare earth up-conversion nanomaterials
  • A preparation method of co-doped metal ions that regulates the morphology of rare earth up-conversion nanomaterials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Prepare 0.5mol / L of Y(NO 3 ) 3, 0.2mol / L of Yb(NO 3 ) 3 and Er(NO 3 ) 3 Solution, the CuCl of 0.5mol / L used 2 solution and ZnCl 2 Solutions are purchased.

[0025] (2) Hydrothermal method prepares 5% molar ratio Cu 2+ Doped NaYF 4 : Yb, Er rare earth up-conversion nanoparticles.

[0026] Measure 3.0mL of 0.5mol / L Y(NO 3 ) 3 solution, 0.2mL of 0.5mol / L CuCl 2 solution, 1.8mL of 0.2mol / L Yb(NO 3 ) 3 solution and 0.2mL of 0.2mol / L Er(NO 3 ) 3 The solution was sequentially added to a mixed solution containing 0.6g NaOH solid, 3mL deionized water, 10mL oleic acid and 20mL ethanol, and kept under magnetic stirring, and then 4mL deionized water containing 8mmolNaF was added dropwise to the above mixed solution . After magnetic stirring at room temperature for 30 min, the formed gel solution was transferred to a 75 mL polytetrafluoroethylene reactor, sealed, and heated at 230 °C for 8 h, and the entire reaction system was naturally cooled to room temperatur...

Embodiment 2

[0029] (1) Prepare 0.5mol / L of Y(NO 3 ) 3 , 0.2mol / L of Yb(NO 3 ) 3 and Er(NO 3 ) 3 Solution, the CuCl of 0.5mol / L used 2 solution and ZnCl 2 Solutions are purchased.

[0030] (2) Preparation of 30% molar ratio Cu by hydrothermal method 2+ Doped NaYF 4 : Yb, Er rare earth up-conversion nanoparticles.

[0031] Measure 2.0mL of 0.5mol / L Y(NO 3 ) 3 solution, 1.2mL of 0.5mol / L CuCl 2 solution, 1.8mL of 0.2mol / L Yb(NO 3 ) 3 solution and 0.2mL of 0.2mol / L Er(NO 3 ) 3 The solution was sequentially added to a mixed solution containing 0.6g NaOH solid, 3mL deionized water, 10mL oleic acid and 20mL ethanol, and kept under magnetic stirring, and then 4mL deionized water containing 8mmolNaF was added dropwise to the above mixed solution . After magnetic stirring at room temperature for 30 min, the formed gel solution was transferred to a 75 mL polytetrafluoroethylene reactor, sealed, heated at 210 °C for 8 h, and the entire reaction system was naturally cooled to room tem...

Embodiment 3

[0033] (1) Preparation of 30% molar ratio Cu by hydrothermal method 2+ Under 5% mol ratio Zn 2+ Co-doped NaYF 4 : Yb, Er rare earth up-conversion nanoparticles.

[0034] Measure 1.8mL of 0.5mol / L Y(NO 3 ) 3 solution, 0.2mL of 0.5mol / L ZnCl 2 solution, 1.2mL of 0.5mol / L CuCl 2 solution, 1.8mL of 0.2mol / L Yb(NO 3 ) 3 solution and 0.2mL of 0.2mol / L Er(NO 3 ) 3 The solution was sequentially added to a mixed solution containing 0.6g NaOH solid, 3mL deionized water, 10mL oleic acid and 20mL ethanol, and kept under magnetic stirring, and then 4mL deionized water containing 8mmolNaF was added dropwise to the above mixed solution . After magnetic stirring at room temperature for 30 min, the formed gel solution was transferred to a 75 mL polytetrafluoroethylene reactor, sealed, heated at 180°C for 12 h, and the entire reaction system was naturally cooled to room temperature. The final product was centrifuged at 7000rpm in a high-speed centrifuge for 15 minutes, washed 3 times...

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Abstract

The invention provides a preparation method for controlling appearance of a rare earth up-conversion nano material by means of codoping of metal ions, and belongs to the scientific and technical field of nano materials. The preparation method includes the steps of: preparing a series of rare earth up-conversion nano materials NaY(Cu)F4:Yb, Er, which have different doping concentration gradients of copper ions, through a hydrothermal method; and then under the concentration, doping the nano materials with zinc ions in a series of different concentrations to obtain NaY(Cu, Zn)F4:Yb, Er rare earth up-conversion nano materials. A result proves that change on the appearance of the NaY(Cu, Zn)F4:Yb, Er rare earth up-conversion nano materials can be controlled by regulating the value and ratio of concentrations of the copper and zinc ions. Through the method, the ions for controlling the rare earth up-conversion nano materials are less in types and controllable conditions. The method is low in cost of employed ions and has simple operations, so that the method is relatively economic and simple for controlling the rare earth up-conversion nano materials.

Description

technical field [0001] The invention belongs to the field of nanomaterial science and technology, and mainly relates to a preparation method of co-doped metal ions for regulating the morphology of rare earth upconversion nanomaterials. Background technique [0002] Rare-earth up-conversion luminescent nanoparticles (UCNPs) refer to a kind of doping with rare-earth ions to make the host material continuously absorb two or more long-wavelength low-energy photons and then emit a short-wavelength photon under the excitation of near-infrared wavelength. Nanoparticles with high-energy photon phenomenon, which belongs to the anti-Stokes luminescence displacement phenomenon, that is, fluorescent nanomaterials that emit visible light under near-infrared light excitation. Rare earth upconversion luminescent nanoparticles usually consist of three parts: matrix material, sensitizer and activator. In recent years, rare earth nanoparticles doped with lanthanide metal ions have developed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/85B82Y20/00
CPCB82Y20/00C09K11/7773
Inventor 张秀娟查纯婷李文娟李晨龙贺高红
Owner DALIAN UNIV OF TECH