La/Eu-ordered mesoporous ZnO composite and preparation method thereof
A technology of mesoporous materials and composite materials, applied in the field of La/Eu-ordered mesoporous zinc oxide composite materials and their preparation
Inactive Publication Date: 2017-08-18
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
Due to the relative activity of zinc oxide, the synthesis of mesoporous zinc oxide by soft template method has not yet been fully reported.
[0006] In addition, the currently synthesized mesoporous zinc oxide materials are mostly used in the fields of photocatalysis and gas sensing, and there are no related reports on the use of mesoporous, especially ordered mesoporous zinc oxide, as the main body of rare earth luminescent materials.
Method used
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[0025] Example: Dissolve 1g of cetyltrimethylammonium bromide powder in 480ml of water and stir evenly at 80°C, add 1.68g of zinc acetate dihydrate to the solution and continue stirring until uniform, then slowly add hydrogen Lithium oxide, while testing the pH with pH paper until the solution is slightly alkaline, the mixture is stirred at 80°C for 2 hours, the obtained mixed solution is filtered, and the product is filtered out; dried at room temperature for 24 hours, and the dried powder product is put into a crucible , in a muffle furnace at 500°C, calcined for 4 hours, and the product was taken out, which has a regular and orderly mesoporous channel structure, such as figure 1 shown. From figure 2It can be seen that in addition to the regular pore structure, the prepared material has a can-shaped morphology macroscopically.
[0026] Take a certain amount of Eu 2 o 3 (Slightly more, for later use) Pour into a beaker filled with hydrochloric acid, heat while stirring t...
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Abstract
The invention relates to a La / Eu-ordered mesoporous ZnO composite and a preparation method thereof. A template method is adopted to prepare a canned ordered mesoporous ZnO nano material; and prepared ZnO is doped with La / Eu phosphate to prepare the La / Eu-ordered mesoporous ZnO composite. Under excitation of 465 nanolight, the La / Eu-ordered mesoporous ZnO composite is subjected to Eu transition emission; and when 414 nanolight is used for excitation, ZnO emission appears, and emitted light with different colors can be obtained through excitation by different excitation light to realize light color adjustability. As ZnO emission occurs under 469 nanolight, Eu absorption occurs under 465 nanolight, and ZnO emission and Eu absorption are partially superposed, energy can be effectively transferred to Eu by ZnO, and furthermore, the Eu luminous efficiency is improved. The La / Eu-ordered mesoporous ZnO composite has a wide application prospect in such directions as fluorescent powder, photocatalysis, display materials and the like.
Description
technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a La / Eu-ordered mesoporous zinc oxide composite material and a preparation method thereof. Background technique [0002] Mesoporous materials generally refer to materials with an ordered pore structure with a pore size of 2-50 nm and a porosity greater than 40%. For porous nanomaterials, after the total void volume (porosity) reaches a certain value, if the pore volume is small enough, it will It will show the size effect and surface effect of the pores, resulting in a series of different and bulk properties. Ordered mesoporous materials are a new type of nanostructured materials that emerged and developed rapidly in the 1990s. Compared with general porous materials, they are attractive in that they have some excellent properties that other porous materials do not have: large specific surface area , uniform pore size, adjustable pore size, and regular and orderl...
Claims
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IPC IPC(8): C09K11/78
CPCC09K11/7785
Inventor 于辉姜冬梅包娜
Owner CHANGCHUN UNIV OF SCI & TECH