CN115975635A - Photo-induced and force-induced dual-afterglow luminescent material and preparation method thereof - Google Patents
Photo-induced and force-induced dual-afterglow luminescent material and preparation method thereof Download PDFInfo
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- CN115975635A CN115975635A CN202310024508.4A CN202310024508A CN115975635A CN 115975635 A CN115975635 A CN 115975635A CN 202310024508 A CN202310024508 A CN 202310024508A CN 115975635 A CN115975635 A CN 115975635A
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Abstract
The invention relates to the field of luminescent material preparation, in particular to a photoinduced and force-induced double-afterglow luminescent material and a preparation method thereof, wherein the general formula of the luminescent material is Ba 1‑x Al 2 0 4 :0.06Eu, xM, x is 0.005-0.07, M is one or more of Eu, dy, nb and Y, and the preparation method comprises the following steps: respectively weighing corresponding oxides, nitrides, chlorides or carbonates containing the elements according to the molar ratio of Al, ba, eu, dy, nb and Y, mixing, adding a grinding aid, grinding, uniformly mixing, drying, sintering, cooling and grinding to obtain the rare earth element. The material of the invention not only has photoluminescence and long afterglow luminescence, but also has the phenomenon of mechanoluminescence and mechanoluminescence without ultraviolet activation.
Description
Technical Field
The invention relates to the field of luminescent material preparation, in particular to a light-induced and force-induced double-afterglow luminescent material and a preparation method thereof.
Background
Force-induced luminescence refers to the phenomenon of luminescence under the action of mechanical forces, including but not limited to stretching, impacting, grinding, scraping, shaking, blowing, pressing, etc., and can also be generated under the conditions of ultrasonic waves and infrared laser pulses. The mechanical force mainly plays a role in excitation, and specific light-emitting color, light-emitting intensity, light-emitting time and the like are closely related to the properties of the compound.
Luminescent materials are substances that are excited by various forms of energy, and the substances are in an excited state, and the energy of the excited state is released in the form of light or heat. If the released energy is electromagnetic radiation in the ultraviolet, visible or near infrared, the process is called a luminescence process and the substance is a luminescent material.
The photoluminescent material is a material which can continuously luminesce for a long time in a dark room or a darker environment after being irradiated for a certain time by a light source such as ultraviolet light or eye light and the like and when the excitation of the light source is stopped. The force-induced afterglow luminescent material belongs to a force-induced luminescent material, is rare, refers to the phenomenon that luminescence is carried out after stress and luminescence is carried out after force is stopped, has important value in the non-photoluminescence field, can directly convert mechanical energy into optical energy, is used in the fields of night light-free light source, visual sensing, force field monitoring and the like, and has great application value. In the existing luminescent materials, the photoluminescent afterglow luminescent materials are common, the force-induced afterglow luminescent materials are less, and the photoluminescent luminescent materials with both photoluminescence and force-induced afterglow are less.
Disclosure of Invention
In order to solve the problems, the invention provides a luminescent material with both photoluminescence and force-induced afterglow and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
a light-induced and force-induced dual-afterglow luminescent material with general formula Ba 1-x Al 2 O 4 :0.06Eu, xM, x is 0.005-0.07, M is one or more of Eu, dy, nb and Y.
Further, the crystal structure of the light emitting material belongs to a cubic system.
The invention also provides a preparation method of the photo-induced and force-induced dual-afterglow luminescent material, which comprises the following steps:
respectively weighing corresponding oxides, nitrides, chlorides or carbonates containing the elements according to the molar ratio of Al, ba, eu, dy, nb and Y, mixing, adding a grinding aid, grinding, uniformly mixing, drying, sintering, cooling and grinding to obtain the rare earth element. Specifically, grinding for 30min, uniformly mixing until the particle size of the raw material is less than or equal to 0.15mm, putting the raw material into a forced air drying oven at 80 ℃, drying for 2h, removing excessive water and absolute ethyl alcohol, putting the raw material into a high-temperature tubular atmosphere furnace, introducing mixed gas of 4-12% hydrogen and 88-96% nitrogen, heating to 1500-1700 ℃ at the heating rate of 5-10 ℃/min, reacting for 3-5h, cooling to room temperature, and grinding by using an agate mortar until the particle size is less than or equal to 0.355mm to obtain the composite material.
Further, the grinding aid is absolute ethyl alcohol, and the dosage of the grinding aid is 5 percent of the mass of the ground substance
The mechanoluminescence material provided by the invention has high luminous intensity.
The mechanoluminescence material provided by the invention has a simple preparation process and can adapt to different use environments.
The material of the invention not only has photoluminescence and long afterglow luminescence, but also has the mechanoluminescence and mechanoluminescence phenomena which do not need to be activated by ultraviolet light, and has good application prospect in the aspects of material surface stress distribution, buildings, bridges, roads, mechanical sensors and the like.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a real-time photograph of the photo-induced and force-induced dual afterglow luminescent material of example 3 under mechanical stimulation, which is obtained by taking a picture with a mobile phone.
Fig. 2 is a real-time photograph of the photo-induced and force-induced dual afterglow luminescent material of example 3 under mechanical stimulation, which is obtained by taking a picture with a mobile phone.
FIG. 3 is a powder X-ray diffraction spectrum of 7 sets of samples of example 1.
FIG. 4 shows the chemical stability test of example 3, from left to right, with samples 1, 7, 14, 30, and 60 placed.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the invention.
Example 1
A preparation method of a light-induced and force-induced double-afterglow luminescent material comprises the following steps:
selecting aluminum oxide, barium carbonate, europium oxide and dysprosium oxide as starting compound raw materials, and respectively weighing 7 groups of four compound raw materials according to the stoichiometric ratio of the following elements, wherein the mixture ratio is as follows:
ba, al, eu, dy = 1: 2: 0.06: 0.005, corresponding to x =0.005, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.995 Al 2 O 4 ∶0.06Eu，0.005Dy；
Ba, al, eu, dy = 1: 2: 0.06: 0.01, corresponding to x =0.01, and the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.99 Al 2 O 4 ∶0.06Eu，0.01Dy；
Ba, al, eu, dy = 1: 2: 0.06: 0.02, corresponding to x =0.02, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.98 Al 2 O 4 ∶0.06Eu，0.02Dy；
Ba, al, eu, dy = 1: 2: 0.06: 0.03, corresponding to x =0.03, the chemical formula of the obtained photo-and force-induced double-afterglow luminescent material is Ba 0.97 Al 2 O 4 ∶0.06Eu，0.03Dy；
Ba, al, eu, dy = 1: 2: 0.06: 0.04, corresponding to x =0.04, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.96 Al 2 O 4 ∶0.06Eu，0.04Dy；
Ba, al, eu, dy = 1: 2: 0.06: 0.05, corresponding to x =0.05, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.95 Al 2 O 4 ：0.06Eu，0.05Dy；
Ba, al, eu, dy = 1: 2: 0.06: 0.07, corresponding to x =0.07, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.93 Al 2 O 4 ∶0.06Eu，0.07Dy；
Mixing the raw materials of each group respectively, pouring the obtained solid powder into an agate mortar, adding a proper amount of absolute ethyl alcohol (the dosage is 5 percent of the mass of the grinding material), grinding for 30min, uniformly mixing until the particle size of the raw materials is less than or equal to 0.15mm, putting the raw materials into a forced air drying oven at 80 ℃, drying for 2h, removing redundant water and absolute ethyl alcohol, putting the raw materials into a high-temperature tubular atmosphere furnace, introducing mixed gas containing 10 percent of hydrogen and 90 percent of nitrogen, heating to 1650 ℃ at the heating rate of 10 ℃/min, reacting for 4h, cooling to room temperature, re-grinding at the speed of twice a second back and forth for 1 second until the particle size is less than or equal to 0.355mm, and obtaining the photo-induced and force-induced dual-afterglow luminescent material crystal.
Example 2
A preparation method of a light-induced and force-induced double-afterglow luminescent material comprises the following steps:
selecting aluminum oxide, barium carbonate, europium oxide and dysprosium oxide as starting compound raw materials, and respectively weighing 4 groups of four compound raw materials according to the stoichiometric ratio of the following elements, wherein the mixture ratio is as follows:
ba, al, eu, dy = 1: 2: 0.03: 0.01, corresponding to x =0.01, and the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.99 Al 2 O 4 ∶0.03Eu，0.01Dy；
Ba, al, eu, dy = 1: 2: 0.03, corresponding to x =0.03, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.97 Al 2 O 4 ∶0.03Eu，0.03Dy；
Ba, al, eu, dy = 1: 2: 0.03: 0.05, corresponding to x =0.05, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.95 Al 2 O 4 ∶0.03Eu，0.05Dy；
Ba, al, eu, dy = 1: 2: 0.03: 0.07, corresponding to x =0.07, the chemical formula of the obtained photo-induced and force-induced double-afterglow luminescent material is Ba 0.93 Al 2 O 4 ∶0.03Eu，0.07Dy；
Mixing the raw materials of each group respectively, pouring the obtained solid powder into an agate mortar, adding a proper amount of absolute ethyl alcohol (the dosage is 5 percent of the mass of the grinding material), grinding for 30min, uniformly mixing until the particle size of the raw materials is less than or equal to 0.15mm, putting the raw materials into an air-blast drying oven at 80 ℃, drying for 2h, removing redundant water and ethanol, putting the raw materials into a high-temperature tubular atmosphere furnace, introducing mixed gas containing 10 percent of hydrogen and 90 percent of nitrogen, heating to 1650 ℃ at the heating rate of 10 ℃/min, reacting for 4h, cooling to room temperature, re-grinding at the speed of 1 second to-and-fro twice until the particle size is less than or equal to 0.355mm, and obtaining the photo-induced and force-induced double-afterglow luminescent material crystal.
Example 3
A preparation method of a green luminescent film with both long afterglow and mechanoluminescence comprises the following steps:
the 7 groups of crystals obtained in the example 1 are taken as raw materials, placed into a culture dish with the diameter of 5cm, respectively mixed with Dow Corning 184 silicon rubber A component (the main component is polydimethylsiloxane) with the mass ratio of the A component to the crystals of the example 1 being 5: 1, dow Corning 184 silicon rubber B component (curing agent) is added with the weight ratio of the B component to the polydimethylsiloxane being 1: 10, the mixture is uniformly mixed, air bubbles are removed by vacuumizing, and the mixture is cured for 2 hours at the temperature of 80 ℃ to prepare a circular film.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (5)
1. A light-induced and force-induced double-afterglow luminescent material is characterized in that: the general formula of the luminescent material is Ba 1-x Al 2 O 4 :0.06Eu, xM, x is 0.005-0.07, M is one or more of Eu, dy, nb and Y.
2. The light-induced and force-induced dual afterglow luminescent material as claimed in claim 1, wherein: the crystal structure of the luminescent material belongs to a cubic crystal system.
3. The method for preparing a light-induced and force-induced double-afterglow luminescent material as claimed in claim 1, wherein the method comprises the following steps: the method comprises the following steps:
respectively weighing corresponding oxides, nitrides, chlorides or carbonates containing the elements according to the molar ratio of Al, ba, eu, dy, nb and Y, mixing, adding a grinding aid, grinding, uniformly mixing, drying, sintering, cooling and grinding to obtain the finished product.
4. The method for preparing a light-induced and force-induced dual-afterglow luminescent material as claimed in claim 3, wherein: the grinding aid is absolute ethyl alcohol, and the dosage of the grinding aid is 5% of the mass of the ground substance.
5. The method for preparing a light-induced and force-induced double-afterglow luminescent material as claimed in claim 3, wherein the method comprises the following steps: grinding for 30min, mixing uniformly until the particle size of the raw material is less than or equal to 0.15mm, placing into a forced air drying oven at 80 ℃, drying for 2h, removing redundant water and absolute ethyl alcohol, placing into a high-temperature tubular atmosphere furnace, introducing mixed gas containing 4-12% of hydrogen and 88-96% of nitrogen, heating to 1500-1700 ℃ at the heating rate of 5-10 ℃/min, reacting for 3-5h, cooling to room temperature, and grinding again until the particle size is less than or equal to 0.355mm to obtain the catalyst.
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| CN202310024508.4A CN115975635A (en) | 2023-01-06 | 2023-01-06 | Photo-induced and force-induced dual-afterglow luminescent material and preparation method thereof |
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| CN202310024508.4A CN115975635A (en) | 2023-01-06 | 2023-01-06 | Photo-induced and force-induced dual-afterglow luminescent material and preparation method thereof |
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Non-Patent Citations (3)
| Title |
|---|
| LIN YUANHUA: "The characterization and mechanism of long afterglow in alkaline earth aluminates phosphors co-doped by Eu2O3 and Dy2O3", 《MATERIALS CHEMISTRY AND PHYSICS》, vol. 70, no. 2 * |
| R. K. RAI: "BaAl2O4:Eu-Phosphor for mechanoluminescence dosimetry", 《RADIATION MEASUREMENT》, vol. 46, no. 12, pages 6 * |
| 吕兴栋: "铝酸锶长余辉发光材料的超细粉体制备、构效关系及其应用研究", 《中国博士学位论文全文数据库》, pages 4 - 1 * |
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