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Nano red CaSiO3:Pb, Mn fluorescent material and its preparing method

A red fluorescent and nanotechnology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of large product particle size, high energy consumption, low luminous intensity, etc., and achieve improved microstructure, increased fluorescence intensity, and excellent application performance Effect

Inactive Publication Date: 2007-06-27
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems are high energy consumption, large product particle size and low luminous intensity.

Method used

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  • Nano red CaSiO3:Pb, Mn fluorescent material and its preparing method
  • Nano red CaSiO3:Pb, Mn fluorescent material and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 3.2971g Ca(NO 3 ) 2 , 0.1656g Pb(NO 3 ) 2 and 0.2706g Mn(NO 3 ) 2 , add 0.1mL nitric acid and 5mL deionized water, stir and dissolve in the beaker and slowly pour in 1.5622g SiO 2 Add 1mL ON70 to the sol made of aerosol and 40mL ethanol, stir in a water bath at 40°C for 15min, then let it stand for 12h, and then dry the formed gel at 50°C for 5h to obtain the phosphor precursor, and transfer the precursor to Put it into a corundum crucible, slowly raise the temperature and bake in air at 900°C for 2 hours, then bake at 1200°C for 4 hours, take it out after cooling, and grind it evenly to get the sample.

Embodiment 2

[0023] Weigh 3.2971g Ca(NO 3 ) 2 , 0.1656g Pb(NO 3 ) 2 and 0.2706g Mn(NO 3 ) 2 , add 0.1mL nitric acid and 5mL deionized water, stir and dissolve in the beaker and slowly pour in 1.5622g SiO 2 Add 1mL T08 to the sol made of aerosol and 40mL ethanol, stir in a water bath at 40°C for 15min, then let it stand for 12h, then dry the formed gel at 50°C for 5h to obtain the phosphor precursor, transfer the precursor to Put it into a corundum crucible, slowly raise the temperature and bake in air at 900°C for 2 hours, then bake at 1200°C for 4 hours, take it out after cooling, and grind it evenly to get the sample.

Embodiment 3

[0025] Weigh 3.2971g Ca(NO 3 ) 2 , 0.1656g Pb(NO 3 ) 2 and 0.2706g Mn(NO 3 ) 2 , add 0.1mL nitric acid and 5mL deionized water, stir and dissolve in the beaker and slowly pour in 1.5622g SiO 2 Add 1mL XL80 to the sol made of aerosol and 40mL ethanol, stir in a water bath at 40°C for 15min, then let it stand for 12h, then bake the formed gel at 50°C for 5h to obtain the phosphor precursor, and transfer this precursor into For the corundum crucible, heat up slowly at 900°C for 2 hours in air, then bake at 1200°C for 4 hours, take it out after cooling, and grind it evenly to get the sample.

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Abstract

The present invention relates to a kind of nanometer red CaSiO3:PbMn fluorescent material and its preparation process. The fluorescent material features its chemical expression of 0.7CaO.0.025PbO.0.033MnO.1.3SiO2, and includes matrix material calcium nitrate and silica aerosol, fluorescent sensitizer lead nitrate, fluorescent activator manganese nitrate and non-ionic surfactant ON7O, XL80 or TO8, with the weight ratio of calcium nitrate, lead nitrate, manganese nitrate and silica aerosol being 3.2971 to 0.1656 to 0.2706 to 1.5622. The fluorescent material has high fluorescent strength, high particle dispersivity, average nanometer crystal particle size of 150 nm and excellent application performance.

Description

technical field [0001] The invention relates to a rare earth luminescent material and a preparation method of the luminescent material, in particular to a CaSiO 3 : Pb, Mn nanometer red fluorescent material and preparation method thereof; belongs to nanometer luminescent material production technology category. Background technique [0002] CaSiO 3 : Pb, Mn is a kind of common cathodoluminescence and photoluminescence phosphor, because it has advantages such as good chemical stability, thermal stability and low price, it is generally used, but the current production mostly adopts high-temperature solid-phase method, The sintering phenomenon of phosphor powder is serious, and it needs multiple times of ball milling, sintering and screening before it can be applied. The main disadvantages are high energy consumption, large product particle size and low luminous intensity. Contents of the invention [0003] Purpose of the present invention: aim to propose a kind of new syn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/79
Inventor 杨良准方敏杨仕平
Owner SHANGHAI NORMAL UNIVERSITY
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