Hollow structure calcium praseodymium titanate luminescent material doped with metal particles and preparation method thereof

A hollow structure, luminescent material technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of inferior luminous intensity of phosphors, inconsistent powder particle size, high temperature reaction energy consumption, etc. Undemanding, high-quality results

Inactive Publication Date: 2015-08-05
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Most of the current commercial luminescent materials are prepared by high-temperature solid-phase method. The high-temperature reaction consumes a lot of energy and the particle distribution is uneven. And the particle size of the powder is inconsistent, the shape is incomplete, resulting in uneven coating
People prepare phosphors by using sol-gel method, hydrothermal synthesis method, complex gel method and other methods. These methods can make up for the deficiency of high-temperature solid-phase synthesis method, but the luminous intensity of phosphor powder obtained by these methods is not as high as that of high temperature solid phase synthesis

Method used

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  • Hollow structure calcium praseodymium titanate luminescent material doped with metal particles and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Precipitation method to prepare Ca 0.999 Ti 0.99 sn 0.01 o 3 :Pr 0.001 PD 1×10 -5

[0027] Preparation of Pd-containing nanoparticle sol: Weigh 0.22 mg palladium chloride (PdCl 2 2H 2 O) be dissolved in the deionized water of 10mL; Under the condition of magnetic stirring, 11.0mg sodium citrate and 4.0mg sodium lauryl sulfate are dissolved in the above-mentioned palladium chloride solution; Weigh 0.38mg sodium borohydride and dissolve in 100mL deionized water to obtain a concentration of 1×10 -4 mol / L sodium borohydride solution; under the condition of magnetic stirring, quickly add 10mL of the above-mentioned sodium borohydride solution to the above-mentioned palladium chloride solution, react for 20min, and obtain 20mL of Pd nanoparticles with a concentration of 5×10 -5 mol / L of sol.

[0028] Preparation of CPd: Weigh 6.005g of glucose and dissolve it in 36mL of absolute ethanol to obtain a glucose alcohol solution, add 4mL of the above sol to the glucose alc...

Embodiment 2

[0032] Precipitation method to prepare Ca 0.998 Ti 0.995 sn 0.005 o 3 :Pr 0.002 Ag 2.5×10 -4

[0033] Preparation of Ag nanoparticles sol: weigh 3.4 mg silver nitrate (AgNO 3 ) was dissolved in 18.4mL of deionized water; under the condition of magnetic stirring, 42mg of sodium citrate was dissolved in the above silver nitrate solution; 5.7mg of sodium borohydride was weighed and dissolved in 10mL of deionized water to obtain a concentration of 1.5×10 -2 mol / L sodium borohydride solution; under the condition of magnetic stirring, add 1.6mL of the above-mentioned sodium borohydride solution to the above-mentioned silver nitrate solution at one time, and continue to react for 10min to obtain 20mL of Ag nanoparticles with a concentration of 1×10 -3 mol / L of sol.

[0034] Preparation of CAg: Weigh 3.003g of glucose and dissolve it in 35mL of absolute ethanol to prepare an alcoholic solution of glucose, add 5mL of the above sol to the alcoholic solution of glucose to obtain a...

Embodiment 3

[0040] Precipitation method to prepare Ca 0.995 Ti 0.999 sn 0.001 o 3 :Pr 0.005 Pt 5×10 -3

[0041] Containing the preparation of Pt nanoparticle sol: take by weighing 25.9mg chloroplatinic acid (H 2 PtCl 6 ·6H 2 O) be dissolved in 17mL of deionized water; under the condition of magnetic stirring, 400mg sodium citrate and 600mg sodium dodecylsulfonate are dissolved in the above-mentioned chloroplatinic acid solution; 1.9mg sodium borohydride is weighed and dissolved in 10mL deionized water to obtain a concentration of 5 x 10 -3 mol / L sodium borohydride solution; at the same time prepare 10mL concentration of 5×10 -2 mol / L hydrazine hydrate solution; under the condition of magnetic stirring, first add 0.4mL of the above-mentioned sodium borohydride solution dropwise to the above-mentioned chloroplatinic acid solution, after reacting for 5min, then add 2.6mL of the above-mentioned hydrazine hydrate solution to the above-mentioned chloroplatinic acid solution Hydrazine ...

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Abstract

The invention belongs to the field of luminescence materials, and discloses a metal particle-doped hollow structure calcium titanate praseodymium luminescence material and a preparation method thereof, wherein the structure general formula of the luminescence material is Ca1-xTi1-ySnyO3:Prx@Mz, M is doped metal nanoparticles and is at least one selected from Ag, Au, Pt, Pd and Cu, @ represents cladding, M is the inner core, and Ca1-xTi1-ySnyO3:Prx is the outer shell. According to the metal particle-doped hollow structure calcium titanate praseodymium luminescence material, the dispersed carbon spheres are adopted as the template, such that the obtained hollow structure having the spherical calcium titanate praseodymium has the controlled morphology; and due to introduction of the M metal nanoparticles, the luminescence efficiency of the calcium titanate praseodymium luminescence material can be substantially increased under the same excitation condition, and the wavelength of the emission light is not changed.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a hollow structure calcium-praseodymium titanate luminescent material doped with metal particles and a preparation method thereof. Background technique [0002] Most of the current commercial luminescent materials are prepared by high-temperature solid-phase method. The high-temperature reaction consumes a lot of energy and the particle distribution is uneven. And the particle size of the powder is inconsistent, and the shape is incomplete, resulting in uneven coating. People prepare phosphors by using sol-gel method, hydrothermal synthesis method, complex gel method and other methods. These methods can make up for the deficiency of high-temperature solid-phase synthesis method, but the luminous intensity of phosphor powder obtained by these methods is not as high as that of high temperature Solid Phase Synthesis. Obtaining luminescent materials with controllable size and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/67
Inventor 周明杰王荣
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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