CN104031641A - Aluminate fluorescent powder surface coating method based on hydrothermal reaction and fluorescent powder prepared by same - Google Patents
Aluminate fluorescent powder surface coating method based on hydrothermal reaction and fluorescent powder prepared by same Download PDFInfo
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- CN104031641A CN104031641A CN201410246878.3A CN201410246878A CN104031641A CN 104031641 A CN104031641 A CN 104031641A CN 201410246878 A CN201410246878 A CN 201410246878A CN 104031641 A CN104031641 A CN 104031641A
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Abstract
The invention discloses an aluminate fluorescent powder surface coating method based on hydrothermal reaction and BaMgAl10O17:Eu<2+>@MgO fluorescent powder prepared by the same. The method comprises the following steps: a first step of preparing a BaMgAl10O17:Eu<2+> core by a combustion method; and a second step of coating a MgO film by a hydrothermal method to form a core-shell structure to obtain BaMgAl10O17:Eu<2+>@MgO fluorescent powder. The aluminate fluorescent powder with the core-shell structure is realized by coating the MgO film on the surface of the BaMgAl10O17:Eu<2+> (BaM), so that luminous efficiency and thermal stability are improved to a certain extent. The method disclosed by the invention can prepare the fluorescent powder with high brightness, high stability and low surface defect; and moreover, a preparation method is simple in process, low in synthesis temperature, free of pollution, low in cost, high in efficiency and easy to realize industrialization.
Description
Technical field
The present invention relates to fluorescent material field, be specifically related to a kind of aluminate fluorescent powder surface coating method based on hydro-thermal reaction and the BaMgAl of preparation thereof
10o
17: Eu
2+@MgO fluorescent material.
Background technology
Blue colour fluorescent powder BaMgAl
10o
17: Eu
2+(BAM) because possessing the advantage of high-quantum efficiency and high color purity, and be widely used in the fields such as fluorescent material, plasma display (PDP) and white light LEDs.Along with the commercialization of BAM, investigators have expressed higher great expectations to it, have higher requirement.But BAM in use, due to vacuum ultraviolet (VUV) excitation radiation and the sputter of gas discharge ion, there will be brightness decay phenomenon.Because the sputter meeting of energetic ion causes the defect on fluorescent powder grain surface to increase, the surface of crystal is destroyed and then reduced luminous intensity.At present, for the performance people that improve fluorescent material have attempted the whole bag of tricks, for example, adulterate, adjust chemical group and grade, but solve problems the best way or be coated one deck rete at phosphor surface.Current conventional high temperature solid-phase sintering method is carried out film coated, but it is too high to equipment requirements, when use, will accurately control temperature, causes price and energy consumption higher.
Application publication number is the preparation method that the Chinese invention patent application of CN102337126A (application number is 201110206212.1) discloses a kind of PDP BAM blue colour fluorescent powder, comprises the following steps: 1) by starting material aluminum compound, barium compound, magnesium compound, europium compound according to Ba
0.9mgAl
10o
17: Eu
0.1prepare burden with stoichiometric ratio, the mixture that then adds solubility promoter and tungsten compound, molybdenum compound or tungsten compound and molybdenum compound to it, is thoroughly mixed to form compound; 2) compound is packed in high purity aluminium oxide crucible, enter in firing furnace under 1400 DEG C～1500 DEG C nitrogen and hydrogen atmosphere calcination 5～10 hours burned material; 3) described burned material is pulverized, then sieved, disperse, cross water sieve, washing, dry, sieve and obtain BAM blue colour fluorescent powder; 4) the BAM blue colour fluorescent powder of gained is heat-treated in neutral atmosphere or weak oxide atmosphere, sieve after cooling and obtain BAM blue colour fluorescent powder finished product.This technical scheme adopts high temperature solid-phase sintering method, but it is high to equipment requirements, and temperature control is also high, makes energy consumption higher, causes production cost higher.
Application number is that 201110028392.9 Chinese invention patent application discloses a kind of aluminate blue fluorescent powder and preparation method thereof, comprising: in 2.1 mixing tanks, add successively appropriate alcohol, water and strong aqua, stir, solution is mixed; Slowly, to the mixed solution that drips tetraethoxy (TEOS), alcohol in above-mentioned solution, continue to stir; 2.2 gained solution are water bath with thermostatic control 1～10h under 30～80 DEG C of conditions, centrifuge washing, and dry 12～24h, obtains the SiO that size is about 100～1000nm after grinding at 80～160 DEG C
2microballoon; 2.3 take Eu
2o
3be dissolved in nitric acid, then add BaCO successively
3, Mg (NO
3)
2and Al (NO
3)
39H
2o; 2.4 will add strong aqua after above-mentioned mixing solutions heating, magnetic agitation 3～12h, and regulating pH value is 4～8, obtains water white transparency colloidal sol, adds the SiO preparing
2microballoon, stirs 1～12 hour, and solution, at 80～160 DEG C of constant temperature 1～4h, obtains xerogel; Finally, 800～1000 DEG C of preroastings 2～5 hours, obtain SiO
2﹫ BaMgAl
10o
17: Eu
2+nucleocapsid structure.This technical scheme complex process, and the condition of required control is strict, and higher to equipment requirements, energy consumption is higher, thereby causes the production cost of product too high.
Summary of the invention
For addressing the above problem, the invention provides one and utilize hydro-thermal reaction to realize BaMgAl
10o
17: Eu
2+the method that phosphor surface is coated, can overcome and solve above-mentioned problems of the prior art effectively, and the method is by hydro-thermal reaction, the BaMgAl preparing at low-temperature combustion method
10o
17: Eu
2+surface realize the coated of MgO film, form fluorescent powder with core-shell structure, improved luminescent properties and the emitting performance of fluorescent material, improved the thermostability of fluorescent material.
The technical solution adopted for the present invention to solve the technical problems is:
An aluminate fluorescent powder surface coating method based on hydro-thermal reaction, comprises the following steps:
1) first add europium sesquioxide, magnesium nitrate, nitrate of baryta, aluminum nitrate, then add boric acid and urea, grind and make it fully be mixed to get sticky paste; By sticky paste, at 500 DEG C～700 DEG C calcining 0.5～5min, cooling after insulation, grinding obtains BaMgAl
10o
17: Eu
2+core;
2) by step 1) BaMgAl that obtains
10o
17: Eu
2+core is put into deionized water, then adds solubility magnesium salts, and after fully stirring, in 150 DEG C～250 DEG C thermal treatment 4h-120h, last, cooling, centrifugal, washing, obtains BaMgAl
10o
17: Eu
2+@MgO fluorescent material.
Step 1) in, described grinding is carried out in agate mortar.
Described calcining comprises: first sticky paste is moved in crucible, after being warming up to 500 DEG C～700 DEG C in retort furnace, the crucible that fills sticky paste is inserted in retort furnace and burnt, continue 0.5～5min combustion time.
The time of described insulation is 2～10min.
The add-on of described europium sesquioxide, magnesium nitrate, nitrate of baryta, aluminum nitrate is according to chemical formula BaMgAl
10o
17: Eu
2+mol ratio calculate obtain.According to chemical formula BaMgAl
10o
17: Eu
2+, the mol ratio of described magnesium nitrate, nitrate of baryta, aluminum nitrate is 0.8～1.2:0.8～1.5:10, the add-on of described europium sesquioxide is according to Eu
2+required doping content is determined.Described europium sesquioxide and the mol ratio of aluminum nitrate are 0.01～0.04:10, suitable Eu
2+doping content is conducive to improve BaMgAl
10o
17: Eu
2+the luminescent properties of@MgO fluorescent material.
Described boric acid and the mol ratio of aluminum nitrate are 0.03～0.07:10, and described urea and the mol ratio of aluminum nitrate are 30～70:10.
Step 2) described in solubility magnesium salts and step 1) in the mol ratio of aluminum nitrate be 5～10:10.
Described solubility magnesium salts is magnesium nitrate.
Described thermal treatment is carried out in autoclave.
BaMgAl prepared by method of the present invention
10o
17: Eu
2+@MgO fluorescent material, by aluminate fluorescent powder BaMgAl
10o
17: Eu
2+with MgO composition, with aluminate fluorescent powder BaMgAl
10o
17: Eu
2+for core, taking MgO as shell, MgO shell is coated on aluminate fluorescent powder BaMgAl
10o
17: Eu
2+in core.The inventive method is prepared BaMgAl
10o
17: Eu
2+its luminous efficiency of@MgO fluorescent material and thermostability all improve.
Compared with prior art, the invention has the beneficial effects as follows:
One, the present invention adopts low-temperature combustion method to prepare BaMgAl
10o
17: Eu
2+fluorescent material core, MgO is coated on phosphor surface by recycling hydrothermal method, obtains required nucleocapsid structure aluminate light-emitting particles.Present method adopts low-temperature combustion method to prepare the BaMgAl of rare-earth europium doping
10o
17: Eu
2+fluorescent material, as core, is controlled BaMgAl
10o
17: Eu
2+core and MgO shell mol ratio are prepared the fluorescent material of high brightness, high stability, low surface defect, and this preparation method's technique is simple, and synthesis temperature is low, pollution-free, and low-cost high-efficiency is applicable to large-scale industrialized production, is easy to realize industrialization.
Two, the BaMgAl that prepared by the inventive method
10o
17: Eu
2+the nucleocapsid structure of@MgO fluorescent material is by BaMgAl
10o
17: Eu
2+the coated MgO film in surface is realized, and adds MgO neither can destroy BaMgAl
10o
17: Eu
2+crystalline network, can reduce again the surface imperfection of BAM fluorescent material to the utmost, and compared with not coated BAM fluorescent material, luminous efficiency and thermal stability are all improved to some extent.Coated MgO film can not change the crystalline network of fluorescent powder grain, has reduced the defect on fluorescent powder grain surface after being coated, and makes particle more even, and shape is more regular.The BaMgAl of preparation
10o
17: Eu
2+@MgO fluorescent material can be applicable to the fields such as PDP display device, white light LEDs.
Brief description of the drawings
Fig. 1 is BaMgAl
10o
17: Eu
2+@MgO fluorescent powder with core-shell structure and the BAM fluorescent powder grain photoluminescence spectra that is not coated film;
Wherein, coated BaMgAl in Fig. 1
10o
17: Eu
2+refer to BaMgAl
10o
17: Eu
2+@MgO fluorescent material, uncoated BaMgAl
10o
17: Eu
2+refer to BaMgAl
10o
17: Eu
2+fluorescent material.
Embodiment
Embodiment 1:
The first step, combustion method is prepared BaMgAl
10o
17: Eu
2+core, detailed process is as follows: accurately take 0.0176gEu
2o
3, 0.4965gBa (NO
3)
2, 0.5128gMg (NO
3)
26H
2o, 7.5027gAl (NO
3)
39H
2o, boric acid 0.006g and urea 6g are placed in agate mortar, fully grind, and make reagent mix even, obtain sticky paste; Sticky paste is moved into crucible, then be placed in the retort furnace combustion reactions 1.5min of 600 DEG C, after insulation 5min, take out, cooling and grinding obtains BaMgAl
10o
17: Eu
2+core.
Second step, the coated MgO film-shaped of hydrothermal method becomes nucleocapsid structure, and detailed process is as follows: by the BaMgAl obtaining
10o
17: Eu
2+core is dissolved in 100mL deionized water, then adds 3.0769gMg (NO
3)
26H
2o, stirs and obtains mixing solutions; Mixing solutions is inserted in autoclave, after 150 DEG C of thermal treatment 120h, be cooled to 25 DEG C of room temperatures; Cooled solution is carried out to centrifugal, washing, dry, can obtain BaMgAl
10o
17: Eu
2+@MgO fluorescent powder with core-shell structure.
The BaMgAl that in embodiment 1 prepared by the first step
10o
17: Eu
2+baMgAl prepared by core (not being coated the BAM fluorescent powder grain of film) and second step
10o
17: Eu
2+the photoluminescence spectra of@MgO fluorescent powder with core-shell structure as shown in Figure 1.As shown in Figure 1, BaMgAl
10o
17: Eu
2+the luminous efficiency of@MgO fluorescent powder with core-shell structure will be apparently higher than BaMgAl
10o
17: Eu
2+core (not being coated the BAM fluorescent powder grain of film), and after 5h, keep this trend through continuing always, show BaMgAl
10o
17: Eu
2+the thermal stability of@MgO fluorescent powder with core-shell structure also will be apparently higher than BaMgAl
10o
17: Eu
2+core (not being coated the BAM fluorescent powder grain of film).
Embodiment 2:
The first step, combustion method is prepared BaMgAl
10o
17: Eu
2+core, detailed process is as follows: accurately take 0.0176gEu
2o
3, 0.4965gBa (NO
3)
2, 0.5128gMg (NO
3)
26H
2o, 7.5027gAl (NO
3)
39H
2o, boric acid 0.006g and urea 6g are placed in agate mortar, fully grind, and make reagent mix even, obtain sticky paste; Sticky paste is moved into crucible, then be placed in the retort furnace combustion reactions 1min of 600 DEG C, after insulation 5min, take out, cooling and grinding obtains BaMgAl
10o
17: Eu
2+core.
Second step, the coated MgO film-shaped of hydrothermal method becomes nucleocapsid structure, and detailed process is as follows: by the BaMgAl obtaining
10o
17: Eu
2+core is dissolved in 100mL deionized water, then adds 1.0256gMg (NO
3)
26H
2o, stirs and obtains mixing solutions; Mixing solutions is inserted in autoclave, after 180 DEG C of thermal treatment 100h, be cooled to 25 DEG C of room temperatures; Cooled solution is carried out to centrifugal, washing, dry, can obtain BaMgAl
10o
17: Eu
2+@MgO fluorescent powder with core-shell structure.
Embodiment 3:
The first step, combustion method is prepared BaMgAl
10o
17: Eu
2+core, detailed process is as follows: accurately take 0.0176gEu
2o
3, 0.4965gBa (NO
3)
2, 0.5128gMg (NO
3)
26H
2o, 7.5027gAl (NO
3)
39H
2o, boric acid 0.006g and urea 6g are placed in agate mortar, fully grind, and make reagent mix even, obtain sticky paste; Sticky paste is moved into crucible, then be placed in the retort furnace combustion reactions 2min of 600 DEG C, after insulation 5min, take out, cooling and grinding obtains BaMgAl
10o
17: Eu
2+core.
Second step, the coated MgO film-shaped of hydrothermal method becomes nucleocapsid structure, and detailed process is as follows: by the BaMgAl obtaining
10o
17: Eu
2+core is dissolved in 100mL deionized water, then adds 0.2564gMg (NO
3)
26H
2o, stirs and obtains mixing solutions; Mixing solutions is inserted in autoclave, after 200 DEG C of thermal treatment 60h, be cooled to 25 DEG C of room temperatures; Cooled solution is carried out to centrifugal, washing, dry, can obtain BaMgAl
10o
17: Eu
2+@MgO fluorescent powder with core-shell structure.
Embodiment 4:
The first step, combustion method is prepared BaMgAl
10o
17: Eu
2+core, detailed process is as follows: accurately take 0.0176gEu
2o
3, 0.4965gBa (NO
3)
2, 0.5128gMg (NO
3)
26H
2o, 7.5027gAl (NO
3)
39H
2o, boric acid 0.006g and urea 6g are placed in agate mortar, fully grind, and make reagent mix even, obtain sticky paste; Sticky paste is moved into crucible, then be placed in the retort furnace combustion reactions 2min of 600 DEG C, after insulation 5min, take out, cooling and grinding obtains BaMgAl
10o
17: Eu
2+core.
Second step, the coated MgO film-shaped of hydrothermal method becomes nucleocapsid structure, and detailed process is as follows: by the BaMgAl obtaining
10o
17: Eu
2+core is dissolved in 100mL deionized water, then adds 0.1282gMg (NO
3)
26H
2o, stirs and obtains mixing solutions; Mixing solutions is inserted in autoclave, after 250 DEG C of thermal treatment 4h, be cooled to 25 DEG C of room temperatures; Cooled solution is carried out to centrifugal, washing, dry, can obtain BaMgAl
10o
17: Eu
2+@MgO fluorescent powder with core-shell structure.
Claims (10)
1. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction, is characterized in that, comprises the following steps:
1) first add europium sesquioxide, magnesium nitrate, nitrate of baryta, aluminum nitrate, then add boric acid and urea, grind and make it fully be mixed to get sticky paste; By sticky paste, at 500 DEG C～700 DEG C calcining 0.5～5min, cooling after insulation, grinding obtains BaMgAl
10o
17: Eu
2+core;
2) by step 1) BaMgAl that obtains
10o
17: Eu
2+core is put into deionized water, then adds solubility magnesium salts, and after fully stirring, in 150 DEG C～250 DEG C thermal treatment 4h-120h, last, cooling, centrifugal, washing, obtains BaMgAl
10o
17: Eu
2+@MgO fluorescent material.
2. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, is characterized in that step 1) in, described grinding is carried out in agate mortar.
3. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, it is characterized in that, step 1) in, described calcining comprises: first sticky paste is moved in crucible, after being warming up to 500 DEG C～700 DEG C in retort furnace, the crucible that fills sticky paste is inserted in retort furnace and burnt, continue 0.5～5min combustion time.
4. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, is characterized in that step 1) in, the time of described insulation is 2～10min.
5. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, is characterized in that step 1) in, the mol ratio of described magnesium nitrate, nitrate of baryta, aluminum nitrate is 0.8～1.2:0.8～1.5:10.
6. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, is characterized in that step 1) in, described europium sesquioxide and the mol ratio of aluminum nitrate are 0.01～0.04:10.
7. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, is characterized in that step 2) described in solubility magnesium salts and step 1) in the mol ratio of aluminum nitrate be 5～10:10.
8. the aluminate fluorescent powder surface coating method based on hydro-thermal reaction according to claim 1, is characterized in that step 2) in, described solubility magnesium salts is magnesium nitrate.
9. the BaMgAl preparing according to the preparation method described in claim 1～8 any one
10o
17: Eu
2+@MgO fluorescent material.
10. BaMgAl according to claim 9
10o
17: Eu
2+@MgO fluorescent material, is characterized in that, by aluminate fluorescent powder BaMgAl
10o
17: Eu
2+with MgO composition, with aluminate fluorescent powder BaMgAl
10o
17: Eu
2+for core, taking MgO as shell.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388078A (en) * | 2014-10-31 | 2015-03-04 | 电子科技大学 | Carbon-coated BAM:Eu<2+> blue fluorescent powder and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391691A (en) * | 2011-09-01 | 2012-03-28 | 江苏双乐化工颜料有限公司 | Light-storing pigment and coating method thereof |
-
2014
- 2014-06-05 CN CN201410246878.3A patent/CN104031641B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391691A (en) * | 2011-09-01 | 2012-03-28 | 江苏双乐化工颜料有限公司 | Light-storing pigment and coating method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 祝洪洋: "纳米复合材料SiC/ZnO、BaMgAl10O17：Eu～（2+）/MgO的制备与性能研究", 《吉林大学硕士学位论文》 * |
| 祝洪洋: "纳米复合材料SiC/ZnO、BaMgAl10O17：Eu2+/MgO的制备与性能研究", 《吉林大学硕士学位论文》 * |
| 陈哲: "PDP纳米BaMgAl10O17：Eu～（2+）蓝色荧光粉的制备、表面修饰及光谱特性研究", 《华中科技大学博士学位论文》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388078A (en) * | 2014-10-31 | 2015-03-04 | 电子科技大学 | Carbon-coated BAM:Eu<2+> blue fluorescent powder and preparation method thereof |
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Address after: 310018, No. 258, source street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee after: China Jiliang University Address before: 310018, No. 258, source street, Xiasha Higher Education Park, Hangzhou, Zhejiang Patentee before: China Jiliang University |