Rare earth oxysulfide upconversion nanotube and preparation method thereof

A rare earth sulfur oxide and nanotube technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of poor controllability of morphology and serious material agglomeration, and achieve the effect of reducing agglomeration

Active Publication Date: 2015-11-18
WENZHOU MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To solve the problems of poor shape controllability and serious material agglomeration of existing rare earth sulfur oxide nanomaterials, the present invention provides a preparation method of rare earth sulfur oxide up-conversion

Method used

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  • Rare earth oxysulfide upconversion nanotube and preparation method thereof
  • Rare earth oxysulfide upconversion nanotube and preparation method thereof
  • Rare earth oxysulfide upconversion nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The amount of total substance was 2mmol of Gd(NO 3 ) 3 ·6H 2 O, Yb(NO 3 ) 3 ·6H 2 O, Er(NO 3 ) 3 ·6H 2 O three kinds of materials are added in the aqueous solution of 20ml according to the amount ratio of substance 96%: 2%: 2%, and the ammoniacal liquor of 2ml is added under the situation of stirring, makes the pH of mixed solution greater than 10, then in 60 o C for 15 h, centrifuged to obtain a white precipitate, and finally the resulting material was placed in a high-temperature tube furnace, under N 2 / S mixed atmosphere at 600 o C for 1.5h, where N 2 The amount of sulfur in the mixed atmosphere of / S is 3g, that is, Gd 2 o 2 S:x%Yb 3+ ,y%Er 3+ nanotube.

Embodiment 2

[0021] The amount of total substance was 2mmol of Gd(NO 3 ) 3 ·6H 2 O, Yb(NO 3 ) 3 ·6H 2 O, Er(NO 3 ) 3 ·6H 2 O three kinds of materials are added in the aqueous solution of 25ml according to the amount ratio of substance 91%: 8%: 1%, and the ammoniacal liquor of 2.5ml is added under the situation of stirring, makes the pH of mixed solution greater than 10, then in 70 o C for 20 h, centrifuged to obtain a white precipitate, and finally the resulting material was placed in a high-temperature tube furnace, under N 2 / S mixed atmosphere at 700 o Incubate at C for 2h, where N 2 The amount of sulfur in the mixed atmosphere of / S is 4g, that is, Gd 2 o 2 S:x%Yb 3+ ,y%Er 3+ nanotube.

Embodiment 3

[0023] The amount of total substance was 2mmol of Gd(NO 3 ) 3 ·6H 2 O, Yb(NO 3 ) 3 ·6H 2 O, Er(NO 3 ) 3 ·6H 2 O three kinds of materials are added in the aqueous solution of 30ml according to the amount ratio of substance 79.8%: 20%: 0.2%, and the ammoniacal liquor of 3ml is added under the situation of stirring, makes the pH of mixed solution greater than 10, then in 80 o C for 24h, centrifuged to obtain a white precipitate, and finally the resulting material was placed in a high-temperature tube furnace, under N 2 / S mixed atmosphere at 800 o Incubate at C for 3h, where N 2 The amount of sulfur in the mixed atmosphere of / S is 5g, that is, Gd 2 o 2 S:x%Yb 3+ ,y%Er 3+ nanotube.

[0024] The resulting Gd was determined by XRD 2 o2 S:x%Yb 3+ ,y%Er 3+ Phase structure of the nanotubes, morphology of the resulting product and Yb observed by SEM 3+ The influence of ions on the morphology of the product, and the luminescent properties of the product are observed th...

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Abstract

The invention relates to a rare earth oxysulfide upconversion nanotube and a preparation method thereof. The Gd2O2S:x%Yb<3+>, y%Er<3+> nanotube is prepared through the method, the method can control the morphology of the above material and reduce the agglomeration property of the material, and has certain significance in improvement of application of the Gd2O2S:x%Yb<3+>, y%Er<3+> nanotube, the addition amount of ytterbium nitrate has certain influences on the morphology of the obtained product, the length and the diameter of the nanotube increase with the increase of the addition amount of ytterbium nitrate, and the luminous intensity of the product greatly increases with increase of the addition amount of sulfur.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a rare earth sulfur oxide up-conversion nanotube and a preparation method thereof. Background technique [0002] As a category of rare-earth luminescent materials, up-conversion rare-earth luminescent materials are luminescent materials that absorb low-energy photons and then emit high-energy photons. It can convert near-infrared excitation light into visible light or near-infrared light, which has the advantages of large light penetration depth, no autofluorescence interference, and almost no damage to biological tissues. It has broad application prospects in biological fields such as immunoassay, biosensing, bioimaging, and photothermal therapy. Among them, the selection of the host material has an important influence on the luminous efficiency of the up-conversion luminescent material. So far, most studies have focused on rare earth halide materials (especially fluoride) with lo...

Claims

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Application Information

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IPC IPC(8): C09K11/84
Inventor 杨梅薛裕华桂庆元齐蕾吕秀娟程如梅陈路呀彭毓戴黎明
Owner WENZHOU MEDICAL UNIV
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