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Water-soluble terbium-doped calcium fluoride nanoparticle, preparation method and application thereof

A technology of mixed calcium fluoride and nanoparticles, which is applied in the field of preparation of inorganic materials, can solve the problems that few terbium-doped fluoride nanoparticles can be prepared, and the contradiction between water solubility and luminous intensity of terbium-doped nanoparticles can achieve fluorescence Reduced strength, simple preparation method, and good controllability

Inactive Publication Date: 2018-06-15
XIAN UNVERSITY OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a water-soluble terbium-doped calcium fluoride nanoparticle and a preparation method thereof, which solves the problem that terbium-doped fluoride nanoparticles that can be dissolved in water are rarely prepared in the prior art, and even if prepared , there is also a conflict between the water solubility and luminous intensity of terbium-doped nanoparticles

Method used

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  • Water-soluble terbium-doped calcium fluoride nanoparticle, preparation method and application thereof
  • Water-soluble terbium-doped calcium fluoride nanoparticle, preparation method and application thereof
  • Water-soluble terbium-doped calcium fluoride nanoparticle, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0032] Add 0.9267mmol of 2,6-pyridinedicarboxylic acid (DPA) and 35mL of distilled water into a 50mL beaker, and place the beaker in an ultrasonic cleaner (ultrasonic power is 100W, ultrasonic frequency is 40KHz) to fully dissolve DPA, and after the dissolution is complete , Add 0.9267mmol of NaOH to the beaker and ultrasonically dissolve for 15min, then add 0.8803mmol of Ca(NO 3 ) 2 ·4H 2 O and 0.0463mmol Tb(NO 3 ) 3 ·6H 2 Add O to the beaker, ultrasonically dissolve for 15 minutes, then add 1.5311 mmol of NaF, ultrasonically dissolve for 15 minutes, and ultrasonically dissolve to obtain a reaction mixture;

[0033] The reaction mixture was transferred to a 50mL hydrothermal synthesis reactor lining and sealed, and then reacted in a 150°C dry box for 16 hours. After the reaction was completed, it was cooled to room temperature to obtain a colloidal solution; the colloidal solution was placed in a 50mL beaker, Concentrate to 8mL in a drying box at 120℃ to make nanoparticles precip...

Embodiment 2

[0035] The preparation method is the same as in Example 1, except that the La(NO 3 ) 3 ·6H 2 O and Tb(NO 3 ) 3 ·6H 2 Replace O with LaCl respectively 3 ·6H 2 O and TbCl 3 ·6H 2 O.

[0036] Example 2 Obtained Tb 3+ Terbium doped calcium fluoride nanoparticles with a molar doping concentration of 5%.

Embodiment 3

[0038] The preparation method is the same as in Example 1, except that NaF in Example 1 is replaced with KF.

[0039] Example 3 Obtained Tb 3+ Terbium doped calcium fluoride nanoparticles with a molar doping concentration of 5%.

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Abstract

The invention discloses a water-soluble terbium-doped calcium fluoride nanoparticle and a preparation method thereof. The preparation method comprises the following steps: mixing 2,6-pyridinedicarboxylic acid, NaOH, inorganic calcium salt, inorganic terbium salt and alkali metal fluoride to prepare reaction mixed liquor; performing hydrothermal reaction on the reaction mixed liquor to prepare a colloidal solution; purifying the colloidal solution to obtain the water-soluble terbium-doped calcium fluoride nanoparticle. The invention further provides application of the water-soluble terbium-doped calcium fluoride nanoparticle prepared by the preparation method in transition metal ion recognition. The prepared nanoparticle disclosed by the invention has the advantages of even size distribution, small particle diameter, ability in emitting strong Tb<3+> character fluorescence under stimulation of ultraviolet light and recognizing effect with transition metal ions. In addition, the water-soluble terbium-doped calcium fluoride nanoparticle disclosed by the invention has the advantages of simple preparation method, easiness in being amplified, good controllability, excellent product performance, ability in recognizing metal ions and hope in being applied to the fields of analytical chemistry, biological and medical fluorescent probes, tracing, counterfeit prevention and the like.

Description

Technical field [0001] The invention belongs to the technical field of inorganic material preparation, and specifically relates to a water-soluble terbium-doped calcium fluoride nanoparticle, a preparation method and an application thereof. Background technique [0002] Since the end of the last century, with the development of nano-science and technology, nano-luminescent materials have gradually aroused people's strong interest and increasingly attracted people's attention. Rare earth elements have abundant electronic energy levels. Through appropriate doping of rare earth ions, rare earth luminescent materials with absorption and emission of various wavelengths from ultraviolet light region, visible light region to near-infrared region can be obtained. Make it produce more excellent performance on the basis of original properties, which will help discover new luminescent materials and develop new characteristics. At present, exploring new methods for preparing rare earth nano...

Claims

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Application Information

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IPC IPC(8): C09K11/61B82Y20/00B82Y30/00G01N21/64
CPCB82Y20/00B82Y30/00C09K11/7748G01N21/6428G01N2021/6432
Inventor 宋立美高建华
Owner XIAN UNVERSITY OF ARTS & SCI
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