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Preparation method of calcium molybdate/molybdenum disulfide composite luminescent material

A luminescent material, molybdenum disulfide technology, applied in luminescent materials, chemical instruments and methods, etc., to achieve the effect of wide application range, concentrated green light spectrum, and narrow blue light emission spectrum

Inactive Publication Date: 2017-11-24
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rare earth doping makes calcium molybdate excited to produce red light and green light, which has been widely studied, but there are few reports on the preparation of composite luminescent materials by combining calcium molybdate with other materials

Method used

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  • Preparation method of calcium molybdate/molybdenum disulfide composite luminescent material
  • Preparation method of calcium molybdate/molybdenum disulfide composite luminescent material
  • Preparation method of calcium molybdate/molybdenum disulfide composite luminescent material

Examples

Experimental program
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Effect test

Embodiment 1

[0014] 0.85g sodium molybdate (Na 2 MoO 4 ) in 30mL of water, stirred for 5 minutes to form a sodium molybdate aqueous solution, poured the sodium molybdate aqueous solution into the polytetrafluoroethylene lining, soaked two egg shells in water, and then removed the inner membrane attached to the egg shell Put it into the aqueous solution of sodium molybdate; put the polytetrafluoroethylene liner into the reaction kettle, seal it and put it in a dry box for 24 hours at 160°C. After taking out the product, wash it with deionized water and absolute ethanol until it is neutral. Then dry at 40°C for 12 hours to obtain a brown calcium molybdate / molybdenum disulfide composite luminescent material. Put the composite luminescent material into a fluorescence spectrometer to test its luminescent properties. The excitation wavelength is 254nm, showing obvious blue and green light emissions.

Embodiment 2

[0016] 0.85g sodium molybdate (Na 2 MoO 4 ) in 30mL of water, stirred for 5 minutes to form a sodium molybdate aqueous solution, poured the sodium molybdate aqueous solution into the polytetrafluoroethylene lining, soaked two egg shells in water, and then removed the inner membrane attached to the egg shell Put it into the sodium molybdate aqueous solution; put the polytetrafluoroethylene liner into the reaction kettle, seal it and put it in a dry box for 24 hours at 200°C. After taking out the product, wash it with deionized water and absolute ethanol until it is neutral. Then dry at 40°C for 12 hours to obtain a brown-black calcium molybdate / molybdenum disulfide composite luminescent material. The composite luminescent material was put into a fluorescence spectrometer to test its luminescent properties. The excitation wavelength was 254nm, showing obvious blue and green light emissions.

Embodiment 3

[0018] 0.85g sodium molybdate (Na 2 MoO 4 ) in 30mL of water, stirred for 5 minutes to form a sodium molybdate aqueous solution, poured the sodium molybdate aqueous solution into the polytetrafluoroethylene lining, soaked two egg shells in water, and then removed the inner membrane attached to the egg shell Put it into an aqueous solution of sodium molybdate; put the polytetrafluoroethylene liner into the reaction kettle, seal it and place it in a dry box for 24 hours at 240°C to react for 24 hours. After taking out the product, wash it with deionized water and absolute ethanol until it is neutral. Then dry at 40°C for 12 hours to obtain a black calcium molybdate / molybdenum disulfide composite luminescent material. The composite luminescent material was put into a fluorescence spectrometer to test its luminescent properties. The excitation wavelength was 254nm, showing obvious blue and green light emission.

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Abstract

The invention discloses a preparation method of a calcium molybdate / molybdenum disulfide composite luminescent material. The preparation method specifically comprises the following steps: dissolving 0.85g of sodium molybdate into 30mL of water, stirring for 5 minutes so as to generate a sodium molybdate water solution, pouring the sodium molybdate water solution into a polytetrafluoroethylene liner, soaking two egg shells into water, taking off inner membranes attached to the egg shells, and putting the inner membranes into the sodium molybdate water solution; and putting the polytetrafluoroethylene liner into a reaction kettle, sealing the reaction kettle, putting the reaction kettle into a drying oven to react at 160-240 DEG C for 24 hours, taking out the product, cleaning the product to be neutral by virtue of deionized water and absolute ethanol, and drying at 40 DEG C for 6-48 hours, so as to obtain the calcium molybdate / molybdenum disulfide composite luminescent material. The composite luminescent material can emit blue light and green light under an ultraviolet excitation condition. The simultaneous emission of the blue light and the green light is realized by virtue of compounding of molybdenum disulfide for the first time on the premise that a rare earth element is not introduced, and a synthetic process is relatively simple and low in cost.

Description

technical field [0001] The invention belongs to the technical field of synthesis of photoluminescent materials, and in particular relates to a preparation method of calcium molybdate / molybdenum disulfide composite luminescent materials. Background technique [0002] my country is rich in molybdenum resources, and molybdate is the most important group of molybdenum compounds, which is indispensable in high-tech fields. The development of molybdate materials has important economic and social values. Molybdate is an efficient catalyst, ion conductor and superconductor, and is widely used in the preparation of optical fibers, magnetic materials, catalytic materials and humidity sensors, etc., especially molybdate with scheelite structure, in the field of luminescent materials ( Such as lasers, scintillators, light-emitting diodes, etc.) are widely used. In recent years, researchers from various countries have paid more and more attention to molybdate functional materials, and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/68
CPCC01P2002/72C01P2004/03C09K11/684
Inventor 翟海法张盼盼何奕晓戚敬敬杨纪恩刘海瑞
Owner HENAN NORMAL UNIV
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