Nanometer fluorescence thermometer and preparation method thereof

A nano-fluorescence, thermometer technology, applied in thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve the problems of difficult to use micro-scale environments, low sensitivity of temperature detection equipment, etc. The effect of increasing the degree of

Active Publication Date: 2015-11-25
HUNAN UNIV
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Problems solved by technology

[0004] Aiming at the shortcomings of the existing temperature detection equipment, which are not highly sensitive and difficult to

Method used

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  • Nanometer fluorescence thermometer and preparation method thereof
  • Nanometer fluorescence thermometer and preparation method thereof
  • Nanometer fluorescence thermometer and preparation method thereof

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Embodiment 1

[0033] 1) Prepare an aqueous solution of NaOH with a concentration of 12mol / L. Weigh TiO according to the molar ratio of 1:0.48:0.02 2 , Bi(NO 3 ) 3 , Er(NO 3 ) 3 , and dissolved in the aqueous solution of NaOH of the above-mentioned concentration, the mixed solution was placed in a magnetic stirrer and stirred for about 0.5 hours;

[0034] 2) Transfer the reaction solution obtained in step 1) to a polytetrafluoroethylene-lined stainless steel reaction kettle with a filling degree of 80%; then place the sealed reaction kettle in a vacuum drying oven at a temperature of 200° C. , carry out heat treatment for 12 hours;

[0035] 3) After the reaction is completed, let the reactor cool down to room temperature naturally in the air, wash the obtained product with dilute hydrochloric acid first, then repeatedly wash it with deionized water, and finally dry it.

[0036] 4) The obtained product was dispersed on a Si sheet, and analyzed under an electron microscope (FE-SEM, Hitac...

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Abstract

The present invention relates to a nanometer fluorescence thermometer and a preparation method thereof, specifically to a rare earth doped nanometer fluorescence thermometer and a preparation method thereof. The nanometer thermometer provided by the invention is the fluorescent material with particle sizes of 50-200 nm. The best preparation method is that: serving soluble bismuth salts, soluble erbium salts, TiO2 powder and excessive NaOH which are prepared according to the designed constituents as raw materials; uniformly mixing the mixture after adding water into the raw materials, and then transferring to a reaction still; performing hydrothermal reaction of the mixture at the temperature higher than 160 DEG C over 12 hours; and washing and drying the mixture, and obtaining the nanometer fluorescence thermometer. The nanometer fluorescence thermometer provided by the invention may be applicable to the temperature detection under a microenvironment, such as a real time online measurement of biological cells of living bodies, therefore the detection accuracy and the range of application may be greatly improved in the biology or other related industries.

Description

technical field [0001] The invention relates to a nanometer fluorescence thermometer and a preparation method thereof; in particular to a rare earth-doped nanometer fluorescence thermometer and a preparation method thereof. Background technique [0002] Na 0.5 Bi 0.5 TiO 3 It is a potential luminescent material matrix, especially when a small amount of rare earth ions are used to replace the Bi ions at the A site, since the valence is the same and the ionic radius is similar, no defects will occur. At the same time, because it is a ferroelectric material and has a non-centrosymmetric structure, the luminescence of the activator—rare earth ions—has high efficiency. Recently, studies have found that the rare earth Er 3+ ion-doped Na 0.5 Bi 0.5 TiO 3 Ceramic bulk as well as thin film forms of the material can be applied in optical temperature sensing and can cover a wide range from low temperature to high temperature. However, due to insufficient sensitivity, its applic...

Claims

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Application Information

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IPC IPC(8): G01K11/20
Inventor 周洪郑珊珊王珊珊朱小莉潘安练
Owner HUNAN UNIV
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