CN106520117A - A preparing method of LiLa(MoO4)2:Eu<3+> fluorescent powder - Google Patents
A preparing method of LiLa(MoO4)2:Eu<3+> fluorescent powder Download PDFInfo
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7736—Vanadates; Chromates; Molybdates; Tungstates
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Abstract
The invention relates to a preparing method of LiLa(MoO4)2:Eu<3+> fluorescent powder. According to the method, Li<2>CO3, La<2>O3, MoO3 and Eu<2>O3 powder are weighed firstly and fully mixed to obtain a reaction raw material, wherein the mole ratio of the Li<2>CO3, the La<2>O3, the MoO3 and the Eu<2>O3 is 1:(1-x):4:x, and the x is 0.01-0.21; the reaction raw material is subjected to a solid phase reaction at 600-1000 DEG C to obtain a reaction product, and the reaction product is cooled to room temperature and then ground to obtain the fluorescent powder. A high-temperature solid phase process is adopted, and breakage and recombination of chemical bonds of the reaction raw material at a high temperature are utilized to form a novel compound. The fluorescent powder prepared by the method can be effectively excited by blue light, and emits red light the main peak of which is at 618 nm. The method has characteristics of a simple process, low pollution and a high output and is suitable for large-scale industrial production.
Description
【Technical field】
The present invention relates to fluorescent material preparation field, and in particular to a kind of LiLa (MoO4)2:Eu3+The preparation method of fluorescent material.
【Background technology】
Most phosphor is made up of substrate and activator.Substrate is the host compound of luminescent material,
It is by serving as with the stable crystal of certain crystallographic structure.The amount of activator is little, in the material in moiety substituent matter crystal
Ion on original case, forms impurity defect.
The material for serving as substrate has many kinds, wherein the double molybdates with scheelite-type structure and double-tungstate receive people
Extensive concern, the physics of such compound, stable chemical nature.In the extended familys of double molybdates, LiLa (MoO4)2Category
In Tetragonal.The method for preparing phosphor has many kinds, for example high temperature solid-state method, sol-gal process, hydro-thermal method and altogether
Sedimentation method etc., compared with traditional wet chemistry method such as hydro-thermal method, high temperature solid-state method has pollution little (not using acid or alkali), behaviour
Make the advantages of simple, yield is big, and be widely used in commercial production and experimentation.At present for LiLa (MoO4)2For
The research of the luminescent material of substrate is less, and Jinsheng Liao et al. sol-gal processes are prepared for LiLa (MoO4)2:Eu3+It is glimmering
Light powder, have studied its luminescent properties (Optical Materials, 2012,8 (34), 1468)；But what sol-gal process was used
Raw material is more expensive, and some raw materials are Organic substance, insalubrity, and preparation time is longer, often needs a few days or a few weeks time.So
And, at present, also LiLa (MoO are prepared without with regard to solid phase method4)2:Eu3+The report of fluorescent material.
【The content of the invention】
It is an object of the invention to provide a kind of LiLa (MoO4)2:Eu3+The preparation method of fluorescent material, this preparation method have
Have simple to operate, the high advantage of product degree of crystallinity.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
Comprise the following steps：
(1) weigh Li2CO3、La2O3、MoO3And Eu2O3Powder body mix homogeneously, obtain reactant feed；Wherein
Li2CO3、La2O3、MoO3And Eu2O3Mol ratio be 1：(1-x)：4：X, x=0.01～0.21；
(2) reactant feed carries out solid state reaction at 600～1000 DEG C, obtains product；
(3) product is cooled to after room temperature through grinding, obtains LiLa (MoO4)2:Eu3+Fluorescent material.
Further, x=0.17.
Further, the Li in step (1)2CO3、La2O3、MoO3And Eu2O3Powder body is mixed by stirring 10～30min
Close uniform.
Further, in step (2), reactant feed is mounted in crucible, and the crucible that will be equipped with reactant feed is put into Muffle
Solid state reaction is carried out in stove.
Further, the heating rate in step (2) using 120 DEG C/min is warming up to 600～1000 DEG C.
Further, in step (2), the time of solid state reaction is 4～5h.
Further, in step (2), the temperature of solid state reaction is 800 DEG C.
Further, grinding half an hour in step (3).
Compared with prior art, the present invention has following beneficial technique effect：
The present invention adopts high temperature solid-state method, is first according to stoichiometric proportion and weighs Li2CO3、La2O3、MoO3And Eu2O3Powder
Body, and be mixed and stir, pyroreaction is carried out, using the fracture of reaction raw materials chemical bond and weight under conditions of high temperature
Combination nova, so as to form the LiLa (MoO of pure phase structure4)2:Eu3+Fluorescent material.Raw material sources of the present invention are wider, and cost is relatively low, no
Containing toxic organic compound；Fluorescent material obtained in of the invention can be effectively excited by blue light, and launches main peak positioned at the red of 618nm
Light.Compared with existing wet chemistry method, the preparation process is simple of the present invention pollutes little, yield big, it is adaptable to which large-scale industry is given birth to
Produce, it is easy to commercialization.
Further, in the present invention, the time of solid state reaction is 4～5h, and the response time is short, effectively carries compared with sol-gal process
High efficiency.
【Description of the drawings】
Fig. 1 is the LiLa (MoO prepared by the present invention4)2:Eu3+The XRD spectrum of powder body；
Fig. 2 is the LiLa (MoO prepared at a temperature of differential responses4)2:Eu3+The emission spectrum of powder body；
Fig. 3 is the LiLa (MoO prepared under different levels of doping4)2:Eu3+The emission spectrum of powder body.
【Specific embodiment】
Below in conjunction with the accompanying drawings, the present invention is elaborated.
The present invention comprises the steps：
(1) quantitative Li is weighed with electronic balance2CO3, La2O3,MoO3And Eu2O3Powder body；Wherein Li2CO3、La2O3、
MoO3And Eu2O3Mol ratio be 1：(1-x)：4：X, x=0.01～0.21；
(2) the reaction powder for weighing is stirred 10～30min makes which be sufficiently mixed uniformly；
(3) pour the reactant feed of mix homogeneously into crucible；
(4) crucible is put in Muffle furnace and is reacted, heating rate is 120 DEG C/min, temperature is specified when temperature rises to
After degree, temperature retention time is 4～5h, and the temperature of solid state reaction is 600～1000 DEG C；
(5), after solid state reaction terminates, treat that crucible naturally cools to room temperature, product is scraped, into powder body after grinding half an hour,
Obtain final product target product.
The present invention is described in further details below by way of specific embodiment.
Embodiment 1：
(1) adopt Li2CO3, La2O3,MoO3And Eu2O3Powder body is used as raw material, wherein Li2CO3、La2O3、MoO3And Eu2O3
Mol ratio be 1：(1-x)：4：X, x=0.07mol；Which is made to be sufficiently mixed uniformly above-mentioned raw materials stirring 10min；
(2) pour the mixture in crucible；
(3) crucible being put in Muffle furnace, heating rate being set as 120 DEG C/min, reaction temperature is respectively set to 600
DEG C, 700 DEG C, 800 DEG C, 900 DEG C and 1000 DEG C, temperature retention time is 4h,；
(4) Eu in product3+Doping content be fixed on 7mol.%；
(5), after solid state reaction terminates, treat that crucible naturally cools to room temperature, product is scraped, grind to form powder body, obtain final product target
Product.
Fig. 1 is the XRD diffracting spectrums of the sample prepared using 1 methods described of the embodiment of the present invention, as can be seen from the figure：
When reaction temperature is 600 DEG C, in prepared sample, contain MoO3·2H2The miscellaneous peak of O, when reaction temperature is increased to 700 DEG C,
When 800 DEG C, 900 DEG C and 1000 DEG C, all diffraction maximum positions of prepared sample with Tetragonal LiLa (MoO4)2Standard spread out
Penetrate collection of illustrative plates (JCPDS Card 18-0734) to match, show that prepared sample is pure phase material.
Fig. 2 is the emission spectrum that sample is prepared using 1 methods described of the embodiment of the present invention, and excitation wavelength is 465nm.From figure
In it can be seen that：The emission spectrum shape that sample is prepared under conditions of differential responses temperature is similar, and luminous intensity is different, its
In the sample luminous intensity for preparing under the conditions of 800 DEG C it is most strong, when being excited with the light of 465nm, Eu can be observed3+'s5D0→7F1With5D0→7F2Transition peak, wherein main peak be located at 618nm.
Embodiment 2：
(1) adopt Li2CO3, La2O3,MoO3And Eu2O3Powder body is used as raw material, wherein Li2CO3、La2O3、MoO3And Eu2O3
Mol ratio be 1：(1-x)：4：X, x=0.01mol, 0.05mol, 0.09mol, 0.13mol, 0.17mol and 0.21mol；
Which is made to be sufficiently mixed uniformly above-mentioned raw materials stirring 10min；
(2) pour the mixture in crucible；
(3) crucible being put in Muffle furnace, heating rate being set as 120 DEG C/min, reaction temperature is set to 800 DEG C；Protect
The warm time is 4h；
(4) Eu in product3+Doping content be respectively 1mol.%, 5mol.%, 9mol.%, 13mol.%,
17mol.%, 21mol.%；
(5), after reaction terminates, treat that crucible naturally cools to room temperature, product is ground to form into powder body, obtain final product target product.
Fig. 3 is the emission spectrum of the sample prepared using 2 methods described of the embodiment of the present invention, and excitation wavelength is 465nm.From
Can be seen that in figure：Under the conditions of different levels of doping, the emission spectrum of sample is similar, and luminous intensity is different, works as Eu3+Mix
Miscellaneous concentration from 1mol.% increase to 17mol.% when, the luminous intensity of sample strengthens with the rising of doping content, works as Eu3+
Doping content more than 17mol.% after, the luminous intensity of sample declines with the rising of doping content, higher than 21mol%
After there is concentration quenching under high doping, therefore, Eu3+Optimum doping concentration be 17mol.%.
Embodiment three
(1) adopt Li2CO3, La2O3,MoO3And Eu2O3Powder body is used as raw material, wherein Li2CO3、La2O3、MoO3And Eu2O3
Mol ratio be 1：(1-x)：4：X, x=0.04mol；Which is made to be sufficiently mixed uniformly above-mentioned raw materials stirring 20min；
(2) pour the mixture in crucible；
(3) crucible is put in Muffle furnace, heating rate is set as 120 DEG C/min, reaction temperature is set to 800 DEG C, protect
The warm time is respectively 3h, 4h, 4.5h, 5h and 6h；
(4) Eu in product3+Doping content be respectively 4mol.%；
(5), after reaction terminates, treat that crucible naturally cools to room temperature, product is ground to form into powder body, obtain final product target product.
Find through test, when in the present invention, temperature retention time is less than 4h, dephasign occurs in target product, the time is oversize to be consumed
Higher-energy, most preferably 4h.
Example IV
(1) adopt Li2CO3, La2O3,MoO3And Eu2O3Powder body is used as raw material, wherein Li2CO3、La2O3、MoO3And Eu2O3
Mol ratio be 1：(1-x)：4：X, x=0.08mol；Which is made to be sufficiently mixed uniformly above-mentioned raw materials stirring 30min；
(2) pour the mixture in crucible；
(3) crucible is put in Muffle furnace, heating rate is set as 120 DEG C/min, reaction temperature is set to 850 DEG C, protect
The warm time is respectively 4h；
(4) Eu in product3+Doping content be respectively 8mol.%；
(5), after reaction terminates, treat that crucible naturally cools to room temperature, product is ground to form into powder body, obtain final product target product.
The invention discloses a kind of LiLa (MoO4)2:Eu3+The preparation method and the characteristics of luminescence of fluorescent material.The present invention is adopted
High temperature solid-state method, using the fracture of reaction raw materials chemical bond under conditions of high temperature and reconfigures, so as to form novel substance.It is first
First Li is weighed according to stoichiometric proportion2CO3、La2O3、MoO3And Eu2O3Powder body, and be mixed and stir, mixture is fallen
Enter to crucible, and crucible is placed in Muffle furnace carries out pyroreaction, after question response completes to naturally cool to room temperature；Size-reduced,
Grinding obtains target product.The fluorescent material can be effectively excited by blue light, and launches HONGGUANG of the main peak positioned at 618nm.
The present invention adopts solid phase method, by adjusting reaction temperature and Eu3+Doping content, study these factors to LiLa
(MoO4)2:Eu3+The impact of the structure and luminescent properties of sample, the preparation and research to luminescent material are significant.
The better embodiment of the present invention is the foregoing is only, is not unique embodiment, all spirit in the present invention
Within principle, any modification made under without departing from this technical process, equivalent, improve etc., it is the power of the present invention
Profit requires to be covered.
Claims (8)
1. a kind of LiLa (MoO4)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Comprise the following steps：
(1) weigh Li2CO3、La2O3、MoO3And Eu2O3Powder body mix homogeneously, obtain reactant feed；Wherein Li2CO3、
La2O3、MoO3And Eu2O3Mol ratio be 1：(1-x)：4：X, x=0.01～0.21；
(2) reactant feed carries out solid state reaction at 600～1000 DEG C, obtains product；
(3) product is cooled to after room temperature through grinding, obtains LiLa (MoO4)2:Eu3+Fluorescent material.
2. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：X=
0.17。
3. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Step
(1) Li in2CO3、La2O3、MoO3And Eu2O3Powder body is by stirring 10～30min mix homogeneously.
4. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Step
(2) in, reactant feed is mounted in crucible, will be equipped with reactant feed crucible be put into Muffle furnace in carry out solid state reaction.
5. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Step
(2) heating rate in using 120 DEG C/min is warming up to 600～1000 DEG C.
6. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Step
(2) in, the time of solid state reaction is 4～5h.
7. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Step
(2) in, the temperature of solid state reaction is 800 DEG C.
8. according to a kind of LiLa (MoO described in claim 14)2:Eu3+The preparation method of fluorescent material, it is characterised in that：Step
(3) grinding half an hour in.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338052A (en) * | 2017-07-31 | 2017-11-10 | 陕西科技大学 | A kind of rear-earth-doped lanthanum molybdate lithium fluorescent material of tunable optical and preparation method thereof |
| CN107384397A (en) * | 2017-07-31 | 2017-11-24 | 陕西科技大学 | A kind of lanthanum molybdate lithium fluorescent material of dysprosium doped and preparation method thereof |
| CN110295044A (en) * | 2019-07-22 | 2019-10-01 | 通化师范学院 | A kind of very high rare earth Eu of luminous intensity3+Ion doping gadolinium molydbate lithium red fluorescence powder, preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU409962A1 (en) * | 1971-05-04 | 1974-01-05 | ||
| CN1462789A (en) * | 2003-05-21 | 2003-12-24 | 温州师范学院 | Red fluorescence powder |
| CN101358129A (en) * | 2007-08-03 | 2009-02-04 | 同济大学 | Method for preparing red nano phosphor for LED |
| CN101519589A (en) * | 2009-03-27 | 2009-09-02 | 中国地质大学（武汉） | High-luminance finely ground particle red fluorescent powder and preparation method thereof |
| CN101717636A (en) * | 2009-11-16 | 2010-06-02 | 孙家跃 | Upconversion material and preparation method thereof |
| CN101781555A (en) * | 2009-01-16 | 2010-07-21 | 中国科学院福建物质结构研究所 | Deep red phosphor powder suitable to be excited by blue LED, preparation method thereof, and electric light source made by same |
| CN105038791A (en) * | 2015-06-23 | 2015-11-11 | 西安建筑科技大学 | Preparation method of spherical red phosphor powder capable of being excited by ultraviolet-blue light |
-
2016
- 2016-10-31 CN CN201610933200.1A patent/CN106520117A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU409962A1 (en) * | 1971-05-04 | 1974-01-05 | ||
| CN1462789A (en) * | 2003-05-21 | 2003-12-24 | 温州师范学院 | Red fluorescence powder |
| CN101358129A (en) * | 2007-08-03 | 2009-02-04 | 同济大学 | Method for preparing red nano phosphor for LED |
| CN101781555A (en) * | 2009-01-16 | 2010-07-21 | 中国科学院福建物质结构研究所 | Deep red phosphor powder suitable to be excited by blue LED, preparation method thereof, and electric light source made by same |
| CN101519589A (en) * | 2009-03-27 | 2009-09-02 | 中国地质大学（武汉） | High-luminance finely ground particle red fluorescent powder and preparation method thereof |
| CN101717636A (en) * | 2009-11-16 | 2010-06-02 | 孙家跃 | Upconversion material and preparation method thereof |
| CN105038791A (en) * | 2015-06-23 | 2015-11-11 | 西安建筑科技大学 | Preparation method of spherical red phosphor powder capable of being excited by ultraviolet-blue light |
Non-Patent Citations (1)
| Title |
|---|
| HIYONG ZHANG等: "Synthesis and Luminescent Properties of Eu3+ Doped Double Molybdate Phosphors", 《ADVANCED MATERIALS RESEARCH》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338052A (en) * | 2017-07-31 | 2017-11-10 | 陕西科技大学 | A kind of rear-earth-doped lanthanum molybdate lithium fluorescent material of tunable optical and preparation method thereof |
| CN107384397A (en) * | 2017-07-31 | 2017-11-24 | 陕西科技大学 | A kind of lanthanum molybdate lithium fluorescent material of dysprosium doped and preparation method thereof |
| CN110295044A (en) * | 2019-07-22 | 2019-10-01 | 通化师范学院 | A kind of very high rare earth Eu of luminous intensity3+Ion doping gadolinium molydbate lithium red fluorescence powder, preparation method thereof |
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Application publication date: 20170322 |