A kind of nanometer fluorescence thermometer and preparation method thereof
A nano-fluorescence and thermometer technology, applied in thermometers, thermometers with physical/chemical changes, measuring devices, etc., can solve problems such as difficult to apply to micro-scale environments, low sensitivity of temperature detection equipment, etc., to improve accuracy and scope of application, sensitivity The effect of increasing
Active Publication Date: 2018-01-16
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 apply to micro-scale environments, the present invention provides a nano-fluorescence thermometer and a 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 invention relates to a nano-fluorescence thermometer and a preparation method thereof; in particular, it relates to a rare-earth doped nano-fluorescence thermometer and a preparation method thereof. The nanometer thermometer designed by the present invention is a fluorescent material with a particle size of 50-200 nm. The best preparation method is as follows: take soluble bismuth salt, soluble erbium salt, TiO2 powder and excess NaOH as raw materials, add water to the raw materials, mix them evenly, and move them to the reaction kettle at 160 ℃. The hydrothermal reaction is carried out at a temperature above ℃ for more than 12 hours, washed and dried to obtain the nano-fluorescence thermometer. The nanothermometer of the present invention can be used for temperature detection in a microscopic environment, such as real-time online measurement of living biological cells, and can greatly improve the detection accuracy and application range in 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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IPC IPC(8): G01K11/20
Inventor 周洪郑珊珊王珊珊朱小莉潘安练
Owner HUNAN UNIV