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Synthetic method for ytterbium-and-erbium-codoped KGdF<4> nanoparticle and nanoribbon

A nanoparticle and synthesis method technology, applied in nanotechnology, nanooptics, nanotechnology and other directions, can solve the problems of large product size, high temperature, large synthesis size, etc., and achieve the effect of low cost

Inactive Publication Date: 2018-04-13
INNER MONGOLIA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In 2004, Su Qiang and others reported the synthesis of KGd2F7 luminescent materials by high-temperature solid-state method on Mater.Lett.; in 2008, Lin Jun et al. published on Chem.Mater. The reaction temperature of these two synthetic strategies is high, and the products obtained are larger in size.
[0005] In order to overcome the problems of high temperature required by existing synthesis methods, relatively complicated reaction process, and large synthetic size, a new ytterbium and erbium co-doped KGdF is urgently needed. 4 Phosphor powder synthesis method

Method used

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  • Synthetic method for ytterbium-and-erbium-codoped KGdF&lt;4&gt; nanoparticle and nanoribbon
  • Synthetic method for ytterbium-and-erbium-codoped KGdF&lt;4&gt; nanoparticle and nanoribbon
  • Synthetic method for ytterbium-and-erbium-codoped KGdF&lt;4&gt; nanoparticle and nanoribbon

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Experimental program
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preparation example Construction

[0034] (1) Preparation of the precursor: the rare earth oxide 78% Gd with a total molar mass of 2 mmoles 2 o 3 and other doped rare earth oxides Ln 2 o 3 (Ln=20%Yb, 2%Er) was added into a 50mL high-temperature reactor, and then a mixed solution of trifluoroacetic acid and water (the volume ratio of trifluoroacetic acid and water was 2:9) was added with a volume of 22mL, and then React for 12-24h in an electric heating constant temperature blast drying oven at 80-140°C. After the reactor was cooled for 12 hours, two parts were equally divided and transferred to three-necked round-bottomed flasks, and then stirred and dried at 60°C for 8 hours to obtain two parts of trifluoroacetate precursor of white solid powder.

[0035] (2) Ytterbium Erbium Co-doped KGdF 4 Preparation of nanoparticles and tapes: Add 30mL oleic acid and 10mL n-hexanol into the three-necked round-bottomed flask containing the above-mentioned white solid trifluoroacetate precursor, mix them evenly under vig...

example 1

[0036] Example 1: KGdF 4 : Preparation of 20%Yb, 2%Er nanoparticles

[0037] Weigh 0.0038g erbium oxide (Er 2 o 3 ), 0.0394g ytterbium oxide (Yb 2 o 3 ) and 0.1414 g gadolinium oxide (Gd 2 o 3 ) was added to a 100mL high-temperature reactor, and then a mixed solution of trifluoroacetic acid and water (volume ratio=2:9) with a total volume of 11mL was added, and the reaction was carried out in an electric thermostat blast drying oven at 80°C for 24h. After the reactor was cooled for 12 hours, it was transferred to four 100 mL three-neck round bottom flasks, and then stirred and dried at 60° C. for 8 hours to obtain a white solid powder trifluoroacetate precursor. A total volume of 30mL of oleic acid (OA) and 10mL of n-hexanol mixed solution was added to the above-mentioned three-necked flask containing the white solid trifluoroacetate precursor, and it was mixed evenly under vigorous stirring to obtain a light yellow transparent clear solution, weighing Add 4 mmol KF and 2...

example 2

[0040] Example 2: KGdF 4 : Preparation of 20%Yb, 2%Er nanoparticles

[0041] Weigh 0.0038g erbium oxide (Er 2 o 3 ), 0.0394g ytterbium oxide (Yb 2 o 3 ) and 0.1414 g gadolinium oxide (Gd 2 o 3 ) was added to a 100mL high-temperature reactor, and then a mixed solution of trifluoroacetic acid and water (volume ratio=2:9) with a total volume of 11mL was added, and the reaction was carried out in an electric thermostat blast drying oven at 80°C for 24h. After the reactor was cooled for 12 hours, it was transferred to four 100 mL three-neck round bottom flasks, and then stirred and dried at 60° C. for 8 hours to obtain a white solid powder trifluoroacetate precursor. A total volume of 30mL of oleic acid (OA) and 30mL of n-hexanol mixed solution was added to the above-mentioned three-necked flask containing the white solid trifluoroacetate precursor, and it was mixed evenly under vigorous stirring to obtain a light yellow transparent clear solution, which was weighed as Add 4...

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Abstract

The invention specifically relates to a synthetic method for an ytterbium-and-erbium-codoped KGdF4 nanoparticle and nanoribbon, especially to a synthetic method for a small-size (no more than 6 nm) ytterbium-and-erbium-codoped KGdF<4> nanoparticle and nanoribbon, belonging to the field of preparation technology for nano-materials. The process flow of the synthetic method has the technical characteristic of combination of hydrothermal and solvothermal technology. A precursor (Gd(TFA)<3>: 20%Yb, 2%Er) is prepared by using a hydro-thermal process, and the products ytterbium-and-erbium-codoped KGdF<4> nanoparticle and nanoribbon are prepared in a mixed solution of oleic acid and n-hexanol by using a solvothermal process. According to the invention, the ytterbium-and-erbium-codoped KGdF<4> nanoparticle with a diameter of less than or equal to 6 nm and the nanoribbon with a length of dozens of micrometers are prepared by using a combination of the hydro-thermal process and the solvothermal process for the first time; and due to usage of the combined hydro-thermal and solvothermal processes, the synthetic method provided by the invention has the advantages of environmental protection, safety, low cost, etc.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to ytterbium-erbium co-doped KGdF 4 Preparation method of phosphor, especially small size (≤6nm) ytterbium erbium co-doped KGdF 4 Preparation methods of nanoparticles and nanobelts. Background technique [0002] Rare earth-doped upconversion luminescent nanomaterials refer to rare earth luminescent materials that convert low-energy photons into high-energy photons through mechanisms such as multi-photon absorption and energy transfer. Compared with fluorescent dyes and quantum dot materials, rare earth-doped upconversion luminescent nanomaterials have the advantages of non-toxicity, good optical stability, good chemical stability, long luminescent lifetime, and narrow emission band. In addition, since rare earth-doped upconversion luminescent nanomaterials use infrared light as the excitation light source, it can avoid the interference of biological samples’ own f...

Claims

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Application Information

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IPC IPC(8): C09K11/85B82Y20/00B82Y30/00B82Y40/00
CPCB82Y20/00B82Y30/00B82Y40/00C09K11/7773
Inventor 德格吉呼徐月山刘松涛田辉焦李周汤建军
Owner INNER MONGOLIA NORMAL UNIVERSITY
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