CN101920941A - Chemical preparation method for cadmium selenide nano particles - Google Patents
Chemical preparation method for cadmium selenide nano particles Download PDFInfo
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- CN101920941A CN101920941A CN 201010227776 CN201010227776A CN101920941A CN 101920941 A CN101920941 A CN 101920941A CN 201010227776 CN201010227776 CN 201010227776 CN 201010227776 A CN201010227776 A CN 201010227776A CN 101920941 A CN101920941 A CN 101920941A
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- China
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- nano particles
- cadmium selenide
- hexadecylamine
- cadmium
- toluene
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a chemical preparation method for cadmium selenide nano particles which have good dispersity and uniform granularity and can obtain stable fluorescence-emission, belonging to the technical field of nano materials. The method takes cadmium acetate, TOPO and hexadecylamine as original materials and toluene as a solvent, and comprises the following specific steps: adding the toluene into a reactor with an insert gas protective device; then sequentially adding the cadmium acetate, the TOPO and the hexadecylamine, introducing argon gas, stirring and heating, wherein the heating temperature is 270-280 DEG C; rapidly pouring the liquid in the reactor into a reactor at room temperature, and adding carbinol when the temperature is naturally cooled to 30-40 DEG C; carrying out centrifugal separation, and filtering to obtain filter cakes; and washing the filter cakes with ethanol for multiple times, and then removing the solvent to obtain the cadmium selenide nano particles. The cadmium selenide nano particles prepared by the method have good dispersity, uniform granularity and different sizes.
Description
Technical field
The present invention relates to the chemical process of a kind of preparation cadmium selenide (CdSe) nano particle, can prepare cadmium selenide nano particles, can obtain stable fluorescence-emission, belong to technical field of nano material with good dispersiveness and particle size uniformity.
Background technology
Cadmium selenide (CdSe) nano particle has good application prospects aspect the light amplitude limit, and very big potential application is also being arranged aspect photodiode and the photovoltaic cell.
Summary of the invention
The objective of the invention is provides a kind of chemical process for preparing cadmium selenide nano particles in order to obtain dispersed and even-grained cadmium selenide nano particles.
The objective of the invention is to be achieved through the following technical solutions.
A kind of chemical process for preparing cadmium selenide nano particles of the present invention is with cadmium acetate (C
4H
6CdO
42H
2O), oxidation trioctylphosphine phosphorus (TOPO) and hexadecylamine (HDA) be original material, is solvent with toluene; Its concrete steps are:
1) toluene is joined in the reactor that has the protection of inert gas device, add cadmium acetate, oxidation trioctylphosphine phosphorus and hexadecylamine then successively, feed argon gas, stir, heating, Heating temperature is 270～280 ℃;
2) liquid in the reactor in the step 1) is poured into rapidly in the container under the normal temperature, added methyl alcohol when naturally cooling to 30～40 ℃, centrifugation is then filtered, and obtains filter cake;
3) with step 2) filter cake that obtains washs for several times with ethanol, removes then and desolvates, and obtains cadmium selenide nano particles;
The ratio of the quality of above-mentioned cadmium acetate, oxidation trioctylphosphine phosphorus, hexadecylamine is 10～15mg: 1g: 1～2g; Toluene is 30～40mL: 1g with the ratio of oxidation trioctylphosphine phosphorus; Methyl alcohol is 10～30mL: 1g with the ratio of oxidation trioctylphosphine phosphorus.
Beneficial effect
The present invention obtains the cadmium selenide nano particles of good dispersity, even-grained different size.
Description of drawings
Fig. 1 is scanning electron microscope (SEM) photo of cadmium selenide nano particles.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
A kind of chemical process for preparing cadmium selenide nano particles is with cadmium acetate (C
4H
6CdO
42H
2O), oxidation trioctylphosphine phosphorus (TOPO) and hexadecylamine (HDA) be original material, is solvent with toluene; Its concrete steps are:
1) 30mL toluene is joined in the three-necked bottle that has the protection of inert gas device, add 13.3mg cadmium acetate, 1g oxidation trioctylphosphine phosphorus and 1.5g hexadecylamine then successively, feed argon gas, stir, be heated to 200 ℃, reactant all melts, and continues to be warming up to 270 ℃, the reactant color is become light yellow by water white transparency, gradually become reddish-brown then;
2) liquid in the reactor in the step 1) is poured into rapidly in the there-necked flask under the normal temperature, added 10mL methyl alcohol when naturally cooling to 40 ℃, centrifugation is then filtered, and obtains filter cake;
3) with step 2) filter cake that obtains washs 3 times with ethanol, removes then and desolvates, and obtains cadmium selenide nano particles, and its scanning electron microscope is as shown in Figure 1.
Embodiment 2
A kind of chemical process for preparing cadmium selenide nano particles is with cadmium acetate (C
4H
6CdO
42H
2O), oxidation trioctylphosphine phosphorus (TOPO) and hexadecylamine (HDA) be original material, is solvent with toluene; Its concrete steps are:
1) 40mL toluene is joined in the three-necked bottle that has the protection of inert gas device, add 13.3mg cadmium acetate, 1g oxidation trioctylphosphine phosphorus and 1.5g hexadecylamine then successively, feed argon gas, stir, be heated to 200 ℃, reactant all melts, and continues to be warming up to 280 ℃, the reactant color is become light yellow by water white transparency, gradually become reddish-brown then;
2) liquid in the reactor in the step 1) is poured into rapidly in the there-necked flask under the normal temperature, added 12mL methyl alcohol when naturally cooling to 35 ℃, centrifugation is then filtered, and obtains filter cake;
3) with step 2) filter cake that obtains washs 3 times with ethanol, removes then and desolvates, and obtains cadmium selenide nano particles.
Embodiment 3
A kind of chemical process for preparing cadmium selenide nano particles is with cadmium acetate (C
4H
6CdO
42H
2O), oxidation trioctylphosphine phosphorus (TOPO) and hexadecylamine (HDA) be original material, is solvent with toluene; Its concrete steps are:
1) 35mL toluene is joined in the three-necked bottle that has the protection of inert gas device, add 13.3mg cadmium acetate, 1g oxidation trioctylphosphine phosphorus and 1.5g hexadecylamine then successively, feed argon gas, stir, be heated to 200 ℃, reactant all melts, and continues to be warming up to 280 ℃, the reactant color is become light yellow by water white transparency, gradually become reddish-brown then;
2) liquid in the reactor in the step 1) is poured into rapidly in the there-necked flask under the normal temperature, added 15mL methyl alcohol when naturally cooling to 30 ℃, centrifugation is then filtered, and obtains filter cake;
3) with step 2) filter cake that obtains washs 3 times with ethanol, removes then and desolvates, and obtains cadmium selenide nano particles.
Claims (1)
1. chemical process for preparing cadmium selenide nano particles, it is characterized in that: with cadmium acetate, oxidation trioctylphosphine phosphorus and hexadecylamine is original material, is solvent with toluene; Its concrete steps are:
1) toluene is joined in the reactor that has the protection of inert gas device, add cadmium acetate, oxidation trioctylphosphine phosphorus and hexadecylamine then successively, feed argon gas, stir, heating, Heating temperature is 270～280 ℃;
2) liquid in the reactor in the step 1) is poured into rapidly in the container under the normal temperature, added methyl alcohol when naturally cooling to 30～40 ℃, centrifugation is then filtered, and obtains filter cake;
3) with step 2) filter cake that obtains washs for several times with ethanol, removes then and desolvates, and obtains cadmium selenide nano particles;
The ratio of the quality of above-mentioned cadmium acetate, oxidation trioctylphosphine phosphorus, hexadecylamine is 10～15mg: 1g: 1～2g; Toluene is 30～40mL: 1g with the ratio of oxidation trioctylphosphine phosphorus; Methyl alcohol is 10～30mL: 1g with the ratio of oxidation trioctylphosphine phosphorus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010227776 CN101920941A (en) | 2010-07-16 | 2010-07-16 | Chemical preparation method for cadmium selenide nano particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010227776 CN101920941A (en) | 2010-07-16 | 2010-07-16 | Chemical preparation method for cadmium selenide nano particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101920941A true CN101920941A (en) | 2010-12-22 |
Family
ID=43336199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201010227776 Pending CN101920941A (en) | 2010-07-16 | 2010-07-16 | Chemical preparation method for cadmium selenide nano particles |
Country Status (1)
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633239A (en) * | 2012-05-11 | 2012-08-15 | 兰州大学 | Preparation method of PbSxSe1-x ternary nanocrystal |
| CN113511636A (en) * | 2020-09-22 | 2021-10-19 | 珠海市柔美科技有限公司 | Method for synthesizing semiconductor luminescent nano rod and flow reactor |
-
2010
- 2010-07-16 CN CN 201010227776 patent/CN101920941A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633239A (en) * | 2012-05-11 | 2012-08-15 | 兰州大学 | Preparation method of PbSxSe1-x ternary nanocrystal |
| CN113511636A (en) * | 2020-09-22 | 2021-10-19 | 珠海市柔美科技有限公司 | Method for synthesizing semiconductor luminescent nano rod and flow reactor |
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Open date: 20101222 |