CN105692568A - Method for preparing selenium quantum dots - Google Patents
Method for preparing selenium quantum dots Download PDFInfo
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- CN105692568A CN105692568A CN201610062739.4A CN201610062739A CN105692568A CN 105692568 A CN105692568 A CN 105692568A CN 201610062739 A CN201610062739 A CN 201610062739A CN 105692568 A CN105692568 A CN 105692568A
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- selenium
- ultrasonic
- quantum dot
- selenium quantum
- quantum dots
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B19/00—Selenium; Tellurium; Compounds thereof
- C01B19/02—Elemental selenium or tellurium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a simple and feasible method for preparing selenium quantum dots. The method comprises the following steps: sufficiently grinding a certain amount of selenium powder in a mortar, adding a right amount of NMP (nitromethylpyrrolidone) into the ground sample, and carrying out ultrasonic treatment in an ultrasonic instrument; and transferring the suspension system subjected to ultrasonic treatment into a centrifuge, centrifuging, and collecting the supernatant clear brown solution which is the selenium quantum dot solution. The raw materials are simple and accessible; and the selenium quantum dots can be prepared only by one ultrasonic step. The method has the advantages of simple technique and low cost, is convenient for integration, and can implement large-scale production. The selenium quantum dots have wide application prospects in the fields of electronics, solar power agriculture, medical treatment and the like.
Description
Technical field
The present invention relates to a kind of preparation method of nano material, be specifically related to a kind of preparation method of selenium quantum dot。
Background technology
Quantum dot (QuantumDot) is a kind of quasi-zero dimensional nanometer materials, due to the electronics in quantum dot and hole in three dimensions all restrained, thus obtain a series of special quantum effect, such as energy level discretization, skin effect, quantum size effect, macro quanta tunnel effect, quantum Interference, coulomb blockade effect, the blue shift at optical absorption peak, the quantum effect etc. of optical nonlinearity enhancement, show many physicochemical properties being different from macroscopic body material, at nonlinear optics, magnetizing mediums, catalysis, the aspects such as medicine and functional material have extremely wide application prospect。
At present, the approach of preparing of quantum dot mainly has two kinds, and one is prepared by organic facies, and another kind is prepared by aqueous phase。Organic facies is prepared the method for quantum dot and be there is the shortcomings such as reagent toxicity is strong, preparation cost is high, processing safety is low；And although aqueous phase is prepared quantum dot and had environmental friendliness, an operation advantage such as easier, but quantum dot light emitting poor-performing prepared by major part aqueous phase, it usually needs carry out after-treatment。The present invention adopts the method for ultrasonic preparation selenium quantum dot to have the advantages such as with low cost, simple to operate, reaction condition is gentle, and the selenium quantum dot size prepared is little, good luminous performance。
Summary of the invention
The invention provides a kind of simple and easy to do selenium quantum dot preparation method, undertaken by following steps:
The first step, takes a certain amount of selenium powder and is fully ground in mortar。
Second step, adds appropriate NMP(N-methyl ketopyrrolidine in ground sample), and put to Ultrasound Instrument ultrasonic。
3rd step, transfers to the suspension system after ultrasonic in centrifuge and is centrifuged, centrifugal terminate after collect the brown clear liquid in upper strata and be selenium quantum dot solution。
Preparation technology and the gained selenium quantum dot of the present invention have the following advantages。
1, preparation technology is simple。Selenium powder and NMP are routine and are easy to get raw material, can prepare selenium quantum dot by ultrasonic stripping one step。
2, large-scale production。The preparation technology that the present invention relates to possesses mass production capabilities。
3, selenium quantum dot has good fluorescent characteristic, can be used for bioscience fluorescent labeling and medical research。
Accompanying drawing explanation
Fig. 1 is the transmission electron microscope picture of selenium quantum dot。
Fig. 2 is the photoluminescence spectrum of selenium quantum dot solution。
Fig. 3 is the photoluminescence laser spectrum of selenium quantum dot solution。
Fig. 4 is the XRD figure of selenium quantum dot。
Detailed description of the invention
Take 0.5g selenium powder end to be placed in mortar and be fully ground。
Ground sample is added 50mlNMP, is put in Ultrasound Instrument ultrasonic 4h。
Suspension system after ultrasonic is transferred in centrifuge, collects upper strata clear brown solution, be selenium quantum dot solution。
Claims (4)
1. the method preparing selenium quantum dot, it is characterised in that concrete preparation method is as follows:
Take a certain amount of selenium powder to be placed in mortar and be fully ground, add appropriate NMP(N-methyl ketopyrrolidine to ground sample), and it is put in Ultrasound Instrument to carry out ultrasonic, the suspension system after ultrasonic is transferred in centrifuge centrifugal, collects upper strata clear brown solution。
2. according to claim 1, it is characterized in that by the method for ultrasonic preparation selenium quantum dot: in step 1, selenium powder consumption is 0.5g, is fully ground。
3. according to claim 1, it is characterized in that by the method for ultrasonic preparation selenium quantum dot: in step 2, add N-methyl ketopyrrolidine 50ml, ultrasonic 4h in Ultrasound Instrument。
4. according to claim 1, it is characterized in that by the method for ultrasonic preparation selenium quantum dot: in step 3, the suspension after ultrasonic is centrifuged。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062739.4A CN105692568A (en) | 2016-01-29 | 2016-01-29 | Method for preparing selenium quantum dots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610062739.4A CN105692568A (en) | 2016-01-29 | 2016-01-29 | Method for preparing selenium quantum dots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105692568A true CN105692568A (en) | 2016-06-22 |
Family
ID=56229717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610062739.4A Pending CN105692568A (en) | 2016-01-29 | 2016-01-29 | Method for preparing selenium quantum dots |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105692568A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225758A (en) * | 2011-04-13 | 2011-10-26 | 昆明物理研究所 | Supersonic chemical preparation method for grapheme quantum dots |
| CN103820121A (en) * | 2014-02-19 | 2014-05-28 | 南京航空航天大学 | Preparation method of layered transition metal compound quantum dot solution |
| CN104893708A (en) * | 2015-06-08 | 2015-09-09 | 青岛大学 | Preparation method of titanium disulfide nanosheet/quantum dot composite mercury ion fluorescent probe |
| CN104944403A (en) * | 2014-03-24 | 2015-09-30 | 中国科学院兰州化学物理研究所 | Preparation method of water-soluble bi-colour fluorinated graphene quantum dot |
-
2016
- 2016-01-29 CN CN201610062739.4A patent/CN105692568A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225758A (en) * | 2011-04-13 | 2011-10-26 | 昆明物理研究所 | Supersonic chemical preparation method for grapheme quantum dots |
| CN103820121A (en) * | 2014-02-19 | 2014-05-28 | 南京航空航天大学 | Preparation method of layered transition metal compound quantum dot solution |
| CN104944403A (en) * | 2014-03-24 | 2015-09-30 | 中国科学院兰州化学物理研究所 | Preparation method of water-soluble bi-colour fluorinated graphene quantum dot |
| CN104893708A (en) * | 2015-06-08 | 2015-09-09 | 青岛大学 | Preparation method of titanium disulfide nanosheet/quantum dot composite mercury ion fluorescent probe |
Non-Patent Citations (1)
| Title |
|---|
| XIAO ZHANG ET AL.: "A Facile and Universal Top-Down Method for Preparation of Monodisperse Transition-Metal Dichalcogenide Nanodots", 《ANGEWANDTE CHEMIE》 * |
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Application publication date: 20160622 |
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| RJ01 | Rejection of invention patent application after publication |