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Rare earth doped yttrium oxide fluorescent nano-fiber and preparation method thereof

A fluorescent nanofiber and rare earth doping technology, applied in the field of fluorescent nanofibers and their preparation, can solve the problems of large particle size, low strength and efficiency, small specific surface area, etc., and achieve easy recovery, easy operation, and large specific surface area. Effect

Inactive Publication Date: 2010-08-18
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently used for Y 2 o 3 :RE (ie: yttrium oxide: rare earth) materials are usually in the form of powder particles, with large particle size and small specific surface area, which limit their low luminous intensity and efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] 1. Preparation of electrospinning solution: 7.5g polyvinyl alcohol (polymerization degree 1788), 4.5g Y (NO 3 ) 3 / Eu(NO 3 ) 3 (atomic ratio Eu:(Y+Eu)=5%) and 67.5 mL of distilled water were mixed, and a homogeneous spinning solution was formed after stirring at 80° C. for a period of time.

[0031] 2. PVA / Y (NO) was prepared by electrospinning of the spinning solution through electrospinning equipment at a voltage of 65KV, the distance between the spinneret and the receiving device was 18cm, the feeding flow rate of the spinning solution was 1mL / 1h, and the electrospinning temperature was 50°C. 3 ) 3 / Eu(NO 3 ) 3 Composite nanofiber precursors.

[0032] 3. The prepared PVA / Y (NO 3 ) 3 / Eu(NO 3 ) 3 The composite nanofiber precursor was dried in a vacuum drying oven (vacuum degree of 0.03 MPa, temperature of 70 °C) for 8 h.

[0033] 4. Y(NO) after drying 3 ) 3 / Eu(NO 3 ) 3 The composite nanofiber precursors were calcined in a muffle furnace at 800 °C for 7...

example 2

[0035] 1. Preparation of electrospinning solution: 2.5g polyvinyl alcohol (polymerization degree 1788), 1.5g Y (NO 3 ) 3 / Er(NO 3 ) 3 (atomic ratio Er:(Y+Er)=10%) and 22.5 mL of distilled water were mixed, and a homogeneous spinning solution was formed after stirring at 80° C. for a period of time.

[0036] 2. PVA / Y (PVA / Y ( NO 3 ) 3 / Er(NO 3 ) 3 Composite nanofiber precursors.

[0037] 3. The prepared PVA / Y (NO 3 ) 3 / Er(NO 3 ) 3 The composite nanofiber precursor was dried in a vacuum drying oven (vacuum degree of 0.02 MPa, temperature of 70 °C) for 8 h.

[0038] 4. PVA / Y(NO) after drying 3 ) 3 / Er(NO 3 ) 3 The composite nanofiber precursors were calcined in a muffle furnace at 800 °C for 7 h. Preparation of Y with a diameter ranging from 200 to 500 nm 2 O 3 :Er fluorescent nanofibers. The weight percent content of yttrium oxide and erbium oxide: 84.2% of yttrium oxide and 15.8% of erbium oxide.

example 3

[0040] 1. Preparation of electrospinning solution: 7.5g polyvinyl alcohol (polymerization degree 1788), 4.5g Y (NO 3 ) 3 / Tb(NO 3 ) 3 (atomic ratio Tb:(Y+Tb)=1%) and 67.5 mL of distilled water were mixed and stirred at 80° C. for a period of time to form a uniform spinning solution.

[0041] 2. PVA / Y (PVA / Y ( NO 3 ) 3 / Tb(NO 3 ) 3 Composite nanofiber precursors.

[0042] 3. The prepared PVA / Y (NO 3 ) 3 / Tb(NO 3 ) 3 The composite nanofiber precursor was dried in a vacuum drying oven (vacuum degree of 0.03 MPa, temperature of 70 °C) for 8 h.

[0043] 4. PVA / Y(NO) after drying 3 ) 3 / Tb(NO 3 ) 3 The composite nanofiber precursors were calcined in a muffle furnace at 800 °C for 7 h. Preparation of Y with a diameter ranging from 100 to 250 nm 2 O 3 : Tb fluorescent nanofibers. The weight percent content of yttrium oxide and terbium oxide: 98.37% of yttrium oxide, 1.63% of terbium oxide.

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Abstract

The invention discloses a rare earth doped yttrium oxide fluorescent nano-fiber and a preparation method thereof. The nano-fiber comprises yttrium oxide and rare earth oxide, wherein the yttrium oxide accounts for 70-99.9 percent by weight, and the rare earth oxide accounts for 0.01-30 percent by weight. The diameter of the rare earth doped yttrium oxide fluorescent nano-fiber is 50-1000nm, and the nano-fiber is provided with small holes or small balls with diameters being 5-80nm. The preparation method comprises the following steps: preparing electrostatic spinning solution, making the electrostatic spinning solution into a composite nano-fiber precursor with spinning polymer resin, yttrium salt and rare earth salt through electrostatic spinning equipment under high-voltage electrostatic electricity, drying the composite nano-fiber precursor with the spinning polymer resin, the yttrium salt and the rare earth salt, and calcining to obtain the rare earth doped yttrium oxide fluorescent nano-fiber. The prepared rare earth doped yttrium oxide fluorescent nano-fiber has the advantages of large specific surface area, high fluorescence, easy recovery and recyclable property, and is applicable to biological sensors, field emission displays and other fields.

Description

technical field [0001] The invention relates to a fluorescent nanofiber and a preparation method thereof, in particular to a rare-earth-doped yttrium oxide fluorescent nanofiber and a preparation method specially used for biosensors, field emission displays and the like. Background technique [0002] With the development of society, the application of rare earths with fluorescent light effect (hereinafter referred to as RE) is becoming more and more common. The rare earths with fluorescent light effect are the lanthanide elements in the periodic table of chemical elements—praseodymium (Pr), neodymium (Nd), promethium (Pm ), samarium (Sm), europium (Eu), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm). Due to their high fluorescence properties and stability, fluorescent materials doped with rare earth ions have been extensively studied and commercially applied. Yttrium oxide has been widely used as the main material of Venus and other optical materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/10D01F1/10D01D5/00C09K11/78G01N21/64H01J31/12
Inventor 陈庆华陈育明钱庆荣刘欣萍黄宝铨肖荔人许兢
Owner FUJIAN NORMAL UNIV
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