CN116751589A - Ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder and preparation method thereof - Google Patents
Ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder and preparation method thereof Download PDFInfo
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- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229940073609 bismuth oxychloride Drugs 0.000 title claims abstract description 43
- 229910052769 Ytterbium Inorganic materials 0.000 title claims abstract description 26
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000000843 powder Substances 0.000 title claims abstract description 20
- 229910052691 Erbium Inorganic materials 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- -1 ytterbium erbium ion Chemical class 0.000 claims abstract description 38
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims abstract description 28
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 22
- 235000010355 mannitol Nutrition 0.000 claims abstract description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 10
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(iii) oxide Chemical compound O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004729 solvothermal method Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 6
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 5
- 239000001103 potassium chloride Substances 0.000 claims abstract description 5
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims abstract description 5
- 229910003454 ytterbium oxide Inorganic materials 0.000 claims abstract description 5
- 229940075624 ytterbium oxide Drugs 0.000 claims abstract description 5
- 238000001354 calcination Methods 0.000 claims abstract description 3
- 238000004090 dissolution Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 17
- 150000002500 ions Chemical class 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 8
- 238000011049 filling Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 48
- 239000002086 nanomaterial Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 239000004065 semiconductor Substances 0.000 abstract description 3
- 230000004298 light response Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000001228 spectrum Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 229960001855 mannitol Drugs 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229930195725 Mannitol Natural products 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 239000000594 mannitol Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000005445 natural material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000002983 circular dichroism Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000000643 oven drying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7769—Oxides
- C09K11/777—Oxyhalogenides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
Abstract
The invention discloses ytterbium erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder and a preparation method thereof, comprising the following steps: bismuth nitrate, ytterbium oxide, erbium oxide, potassium chloride and D-mannitol are used as raw materials for preparation, concentrated nitric acid is added for dissolution, then solvent is added for uniform stirring, pH value is regulated, and the mixture is put into a hydrothermal kettle with polytetrafluoroethylene lining for solvothermal reaction; washing, drying and calcining the product at high temperature to obtain the ytterbium and erbium rare earth ion doped levorotatory chiral bismuth oxychloride fluorescent powder. The ytterbium and erbium rare earth ion doped left-handed chiral bismuth oxychloride fluorescent powder has good light response characteristic, can directly generate circularly polarized light, has stronger chiral light modulation efficiency and higher CD value than natural materials, and has high luminous efficiency; the product is a two-dimensional inorganic nonmetallic semiconductor and information functional material, is expected to be used as a novel nano material for light emission enhancement, and is directly used for scientific research in the fields of circularly polarized light generation and the like.
Description
Technical Field
The invention belongs to the technical field of fluorescent material preparation, and particularly relates to ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder and a preparation method thereof.
Background
Optical materials with Circularly Polarized Light (CPL) properties have received increasing attention in recent years due to their application prospects in optical probes and sensors, advanced microscopes, three-dimensional displays, security tags, lasers, data storage and spin-optical circuits, etc. In general, unpolarized light can generate circularly polarized light by using a linear polarizer and a quarter-wave plate. However, this method causes energy loss during the transition, and almost every single wavelength circularly polarized light requires a special setup and design plate. In contrast, chiral luminescent materials can directly produce circularly polarized light.
In the current research of chiral materials, the main problems are as follows: the chiral material of natural substances has weak interaction with light, which limits the application of chiral photoresponsive property in luminescence. Bismuth oxychloride is used as a novel semiconductor, particularly a bismuth oxychloride material with a sheet-shaped structure, and has attracted general attention in the industry due to the excellent physical properties and chemical activity of the bismuth oxychloride material, but the bismuth oxychloride doped with rare earth ions can only emit natural light and cannot emit circularly polarized light. The combination of the rare earth ion doped with the two-dimensional material and the chirality is expected to be a novel nano material which can directly generate circularly polarized light, has stronger chiral light modulation efficiency and a CD value (circular dichroism) higher than that of a natural material, and can effectively improve the luminous efficiency of the material.
The chiral two-dimensional material processed by the traditional physical method has low controllable degree of freedom, and limits the dimension of light regulation and control. The research shows that the chemical method such as solvothermal method and hydrothermal method has great advantages in preparing the rare earth ion doped two-dimensional material for luminescence, has more adjustable experimental factors, and is easy to prepare various shapes of two-dimensional luminescent materials, so that the chemical method is adopted for designing and preparing the chiral two-dimensional material doped with rare earth ions.
Based on the method, the invention provides ytterbium and erbium-doped rare earth ion levorotatory chiral bismuth oxychloride, and the two-dimensional material is combined with the chirality through doping the chiral control rare earth ion bismuth oxychloride, so that circularly polarized light can be directly generated, the CD value (circular dichroism) is higher than that of a natural material, and the luminous efficiency of the material is effectively improved.
Therefore, in order to solve the problems, the ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder and a preparation method thereof are provided.
Disclosure of Invention
In order to solve the technical problems, the invention designs ytterbium and erbium ion doped left-handed chiral bismuth oxychloride fluorescent powder and a preparation method thereof, and solves the technical problems that the interaction between chiral materials of natural substances and light is weak and the luminous efficiency of pure bismuth oxychloride is low.
In order to achieve the technical effects, the invention is realized by the following technical scheme: ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder with chemical general formula of XL-Bi 1-x-y Er y Yb x OCl; wherein X is D-mannitol with the concentration of 0.1-5 mol/L, and the chemical formula of the D-mannitol is C 6 H 14 O 6 X is 0.05-0.25, and y is 0.01-0.1.
The invention further aims at providing a preparation method of ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder, which is characterized by comprising the following steps:
step1, bismuth nitrate, ytterbium oxide, erbium oxide, potassium chloride and D-mannitol are used as raw materials according to Bi ions: yb ion: er ion: the D-mannitol molar ratio is (1-x-y): x: y: x is configured, wherein X is 0.05-0.25, y is 0.01-0.1, and X is 0.1-5; adding concentrated nitric acid for dissolution, then adding a solvent, finally preparing a solution with the total solution concentration of 0.1-3 mol/L, uniformly stirring, adjusting the pH value to 2-6, transferring into a hydrothermal kettle with a polytetrafluoroethylene lining, and performing solvothermal reaction;
step2, washing, drying and calcining the Step1 reaction product at high temperature to obtain the ytterbium and erbium rare earth ion doped levorotatory chiral bismuth oxychloride fluorescent powder.
Further, the solvent in Step1 is ethylene glycol or an aqueous solution of ethylene glycol.
Furthermore, the filling degree in the hydrothermal kettle is 0.4-0.8.
Further, the solvothermal reaction in Step1 is carried out at a temperature of 120-240 ℃ for 5-20 hours.
Further, the solvothermal reaction temperature is 160 ℃ and the reaction time is 12 hours.
The beneficial effects of the invention are as follows:
(1) The ytterbium and erbium rare earth ion doped levorotatory chiral bismuth oxychloride fluorescent powder has good light response characteristic, can directly generate circularly polarized light, has stronger chiral light modulation efficiency, higher CD value than natural materials and high luminous efficiency.
(2) The ytterbium and erbium rare earth ion doped left-handed chiral bismuth oxychloride is prepared by compounding a bismuth oxychloride matrix and chiral D-mannitol materials with different concentrations, and the preparation method has the advantages of easy operation, easy control of operation conditions and easy preparation of two-dimensional materials with various morphologies.
(3) The ytterbium and erbium rare earth ion doped left-handed chiral bismuth oxychloride material is a two-dimensional inorganic nonmetallic semiconductor and information functional material, is expected to be used as a novel nanomaterial, is used for light emission enhancement, directly generates scientific research in the fields of circularly polarized light and the like, and increases the exploration range of the chiral material scientific research field.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a 0.1L-Bi prepared in example 1 0.94 Er 0.01 Yb 0.05 XRD pattern of OCl material;
FIG. 2 shows 0.1L-Bi prepared in example 1 0.94 Er 0.01 Yb 0.05 SEM profile of OCl material;
FIG. 3 is a 0.1L-Bi prepared in example 1 0.94 Er 0.01 Yb 0.05 SEM profile of OCl material;
FIG. 4 is Bi 0.94 Er 0.01 Yb 0.05 Chiral CD value profile of OCl material;
FIG. 5 is 0.1L-Bi 0.94 Er 0.01 Yb 0.05 Chiral CD value profile of OCl material;
FIG. 6 shows 0.1L-Bi under 980nm laser excitation 0.94 Er 0.01 Yb 0.05 OCl material and Bi 0.94 Er 0.01 Yb 0.05 Comparing the OCl material with a luminous intensity spectrum;
FIG. 7 is a diagram of 5L-Bi prepared in example 2 0.65 Er 0.1 Yb 0.25 XRD pattern of OCl material;
FIG. 8 is a 5L-Bi prepared in example 2 0.65 Er 0.1 Yb 0.25 SEM profile of OCl material;
FIG. 9 is 5L-Bi 0.65 Er 0.1 Yb 0.25 Chiral CD value profile of OCl material;
FIG. 10 shows 5L-Bi under 980nm laser excitation 0.65 Er 0.1 Yb 0.25 OCl material and Bi 0.6 Er 0.1 Yb 0.25 Comparing the OCl material with a luminous intensity spectrum;
FIG. 11 shows 5L-Bi under 980nm laser excitation 0.65 Er 0.1 Yb 0.25 Circularly Polarized Light (CPL) spectrum of OCl material.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The preparation method of the ytterbium and erbium-doped rare earth ion levorotatory chiral bismuth oxychloride comprises the following steps:
(1) With Bi (NO) 3 ) 3 . 5H 2 O, D Mannitol (D-Mannitol) and KCl as raw materials according to Bi ions: yb ion: er ion: d-mannitol: molar ratio of Cl ions = 0.94:0.05:0.01:0.1:1, firstly, dissolving ytterbium oxide and erbium oxide by using concentrated nitric acid, then dissolving all raw materials into an organic solvent ethylene glycol, and preparing a solution with the total solution concentration of 0.6 mol/L; adding the solution into a container, stirring and mixing uniformly, regulating the pH value to 6 by using hydrochloric acid with the concentration of 0.5mol/L, transferring into a hydrothermal kettle with a polytetrafluoroethylene lining, filling the kettle with the filling degree of 0.7, heating to 160 ℃, and preserving heat for 12 hours;
(2) Washing the material obtained in the step (1) with deionized water and ethanol for three times respectively, oven drying, and heat treating at 400deg.C for 3.5 hr to obtain the product with chemical composition formula of 0.1L-Bi 0.94 Er 0.01 Yb 0.05 OCl left-handed chiral bismuth oxychloride two-dimensional material.
The prepared ytterbium and erbium-doped rare earth ion levorotatory chiral bismuth oxychloride is characterized by adopting an X-ray diffraction means, the XRD spectrum is shown as figure 1, and 0.1L-Bi doped with 0.1mmol of dextro mannitol can be seen from the XRD result 0.94 Er 0.01 Yb 0.05 OCl shows obvious and sharp diffraction peak, and the peak position is equal to JCPDS card number 06-0249The BiOCl of the layered structure is highly matched.
The prepared ytterbium and erbium rare earth ion doped levorotatory chiral bismuth oxychloride is characterized under an SEM scanning electron microscope, and the material presents a levorotatory flower ball morphology structure in a sparse and loose state under the SEM scanning electron microscope, and the SEM morphology is shown in figures 2 and 3.
When a circular dichromatic instrument is adopted to test the prepared ytterbium and erbium rare earth ion-doped left-handed chiral bismuth oxychloride, the chiral CD value is found to be negative, and the peak value is obvious, so that the property and the function of the chiral bismuth oxychloride are proved to be endowed with chirality, as shown in figure 4.Bi (Bi) 0.94 Er 0.01 Yb 0.05 Chiral CD value profile of OCl material, no CD signal. As shown in fig. 5.
0.1L-Bi under 980nm laser excitation 0.94 Er 0.01 Yb 0.05 OCl material and Bi 0.94 Er 0.01 Yb 0.05 OCl material versus luminous intensity profile as shown in FIG. 6.
Example 2
The preparation method of the ytterbium and erbium-doped rare earth ion levorotatory chiral bismuth oxychloride comprises the following steps:
(1) With Bi (NO) 3 ) 3 .5H 2 O, D Mannitol (D-Mannitol) and KCl as raw materials according to Bi ions: yb ion: er ion: D-Mannitol: the molar ratio of Cl ions was 0.65:0.25:0.1:5:1, dissolving ytterbium oxide and erbium oxide by concentrated nitric acid, dissolving all raw materials in mixed solution formed by water and glycol serving as an organic solvent to prepare solutions with the total solution concentration of 2mol/L respectively, adding the solutions into a container, stirring and mixing uniformly, regulating the pH value to 5 by nitric acid with the concentration of 0.8mol/L, transferring the solution into a hydrothermal kettle with a polytetrafluoroethylene lining, filling the solution to 0.5, and then heating the solution to 160 ℃ and preserving heat for 12 hours;
(2) Washing the material obtained in the step (1) with deionized water and ethanol for three times respectively, oven drying, and heat treating at 500deg.C for 4 hr to obtain 5L-Bi 0.65 Er 0.1 Yb 0.25 OCl left-handed chiral bismuth oxychloride two-dimensional material.
The prepared ytterbium-erbium-doped rare solution is prepared by adopting an X-ray diffraction meansThe earth ion levorotatory chiral bismuth oxychloride is characterized to obtain an XRD spectrum as shown in figure 7, and the XRD result shows that 5L-Bi doped with 5mmol of dextro mannitol 0.65 Er 0.1 Yb 0.25 OCl shows a distinct and sharp diffraction peak, the peak position of which is highly matched with BiOCl of the layered structure of JCPDS card No. 06-0249.
The prepared ytterbium and erbium rare earth ion-doped left-handed chiral bismuth oxychloride is characterized under an SEM scanning electron microscope, and the material presents a left-handed flower ball morphology structure in a sparse and loose state under the SEM scanning electron microscope, and the SEM morphology is shown in figure 8.
When a circular dichromatic instrument is adopted to characterize the prepared ytterbium and erbium-doped rare earth ion left-handed chiral bismuth oxychloride, the chiral CD value is found to be negative, the maximum value is about 30mdeg, the peak value is obvious, and the property and the function of the chiral bismuth oxychloride are proved to be endowed with chirality, as shown in figure 9.
5L-Bi under 980nm laser excitation 0.65 Er 0.1 Yb 0.25 OCl material and Bi 0.65 Er 0.1 Yb 0.25 OCl material versus luminous intensity spectrum as shown in fig. 10.
When the circularly polarized instrument (CPL) is adopted to perform circularly polarized light characterization on the prepared ytterbium and erbium-doped rare earth ion left-handed chiral bismuth oxychloride, a circularly polarized light signal is found at 672nm, the peak value is obvious, and the circularly polarized light signal is proved to have circularly polarized light, as shown in fig. 11.
In summary, the invention prepares the L-BiErYbOCl which synthesizes the L-chiral bismuth oxychloride fluorescent powder doped with rare earth ions (Yb, er), compared with the advantages of BiErYbOCl without introducing chirality, L-BiYbErOCl, firstly, the L-BiErYbOCl can generate circularly polarized light which cannot be generated by BiErYbOCl; second, the light-emitting intensity of the chiral-introduced L-BiErYbOCl is larger than that of the chiral-introduced BiErYbOCl, so that the light-emitting intensity is enhanced.
Claims (6)
1. Ytterbium and erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder with chemical general formula of XL-Bi 1-x-y Er y Yb x OCl; wherein X is D-mannitol with the concentration of 0.1-5 mol/L, and the chemical formula of the D-mannitol is C 6 H 14 O 6 X is 0.05-0.25, and y is 0.01-0.1.
2. The preparation method of ytterbium erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder according to claim 1, which is characterized by comprising the following steps:
step1, bismuth nitrate, ytterbium oxide, erbium oxide, potassium chloride and D-mannitol are used as raw materials according to Bi ions: yb ion: er ion: the D-mannitol molar ratio is (1-x-y): x: y: x is configured, wherein X is 0.05-0.25, y is 0.01-0.1, and X is 0.1-5; adding concentrated nitric acid for dissolution, then adding a solvent, finally preparing a solution with the total solution concentration of 0.1-3 mol/L, uniformly stirring, adjusting the pH value to 2-6, transferring into a hydrothermal kettle with a polytetrafluoroethylene lining, and performing solvothermal reaction;
step2, washing, drying and calcining the Step1 reaction product at high temperature to obtain the ytterbium and erbium rare earth ion doped levorotatory chiral bismuth oxychloride fluorescent powder.
3. The preparation method of ytterbium erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder is characterized by comprising the following steps: the solvent in Step1 is ethylene glycol or an aqueous solution of ethylene glycol.
4. The preparation method of ytterbium erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder is characterized by comprising the following steps: the filling degree in the hydrothermal kettle is 0.4-0.8.
5. The preparation method of ytterbium erbium ion doped levorotatory chiral bismuth oxychloride fluorescent powder is characterized by comprising the following steps: the solvothermal reaction temperature in Step1 is 120-240 ℃ and the reaction time is 5-20 hours.
6. The preparation method of ytterbium erbium-doped ion levorotatory chiral bismuth oxychloride fluorescent powder is characterized by comprising the following steps: the temperature of the solvothermal reaction is 160 ℃, and the reaction time is 12 hours.
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| CN115678558A (en) * | 2022-10-25 | 2023-02-03 | 昆明理工大学 | Ytterbium erbium-doped rare earth ion chiral bismuth oxyhalide and preparation method thereof |
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| CN115678558A (en) * | 2022-10-25 | 2023-02-03 | 昆明理工大学 | Ytterbium erbium-doped rare earth ion chiral bismuth oxyhalide and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| KUN DIN ET AL.: ""Mechanism of diastereoisomer-induced chirality of BiOBr"", CHEM . SCI., vol. 13, 4 February 2022 (2022-02-04), pages 2450 - 2455 * |
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