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Preparation method of Q-CdS nanoparticles

A nanoparticle and cadmium sulfide technology, applied in the direction of cadmium sulfide, can solve the problems of difficult control conditions, complex synthesis process, serious environmental pollution, etc., and achieve the effect of simple equipment, no environmental pollution, and low cost

Inactive Publication Date: 2011-06-15
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above methods all have the disadvantages of relatively complex synthesis process, difficult conditions to control, serious environmental pollution, and narrow application range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] A preparation method of Q-state cadmium sulfide nanoparticles, comprising the steps of:

[0017] Step 1, take a kind of in cadmium sulfate or cadmium halide as cadmium source, and its mass fraction is 1~16 parts; Get a kind of in sodium sulfate solution, potassium sulfate solution, sodium halide solution or potassium halide solution, its mass fraction The number of parts is 20 parts, the concentration is more than or equal to 0.1mol / L, the greater the concentration is, the larger the cadmium sulfide nanoparticles are finally obtained; the two selected raw materials are mixed and dissolved to make a cadmium source dispersion solution for later use;

[0018] Step 2, get a kind of in sodium sulfide or potassium sulfide as sulfur source, its mass fraction is 3~12 parts; Get a kind of in sodium sulfate solution, potassium sulfate solution, sodium halide solution or potassium halide solution, its mass The number of parts is 10 to 30 parts, the concentration is ≥0.1mol / L, the ...

Embodiment 1

[0028] A preparation method of Q-state cadmium sulfide nanoparticles, comprising the steps of:

[0029] Step one gets 20 parts (mass parts, the same below) concentration is the sodium sulfate solution of 1.5mol / L; Get 2.565 parts of cadmium sulfate (CdSO 4 8 / 3H 2 0), the cadmium sulfate and sodium sulfate solution taken are mixed, dissolved, and made into a cadmium source dispersion solution, for subsequent use;

[0030] Step 2 gets 2.4004 parts of sodium sulfide (Na 2 S·9H 2 (2); get 20 parts of concentration and be the sodium sulfate solution of 1.5mol / L; The sodium sulfide that gets is mixed with sodium sulfate solution, dissolves, and makes sulfur source dispersion solution, for subsequent use;

[0031] Step 3: Add the prepared sulfur source dispersion solution into the cadmium source dispersion solution, mix evenly, generate a yellow precipitate during the reaction, the reaction time is 10 minutes, send the reacted mixture into a centrifuge, and centrifuge to separate ...

Embodiment 2

[0037] A preparation method of Q-state cadmium sulfide nanoparticles, comprising the steps of:

[0038] Step 1 gets 1.8332 parts of cadmium chloride (CdCl 2 ), it is dissolved in 20 parts of concentration in the stirring process and is the sodium chloride solution of 1.0mol / L, makes the cadmium source dispersion solution, for subsequent use;

[0039] Step 2 gets 2.4004 parts of sodium sulfide (Na 2 S·9H 2 (0), it is dissolved in 10 parts of concentration in the stirring process and is the sodium chloride solution of 1.0mol / L, makes sulfur source dispersion solution, for subsequent use;

[0040] Step 3: During the stirring process, add the prepared sulfur source dispersion solution to the cadmium source dispersion solution, and make it evenly mixed. During the reaction process, a yellow precipitate is formed. After 40 minutes of reaction, the reacted mixture is sent to a centrifuge for centrifugation. Separation, the separated centrifugate is sodium chloride solution, which ...

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Abstract

The invention discloses a preparation method of Q-CdS nanoparticles, and relates to the field of inorganic non-metallic nano-material preparation. First, cadmium source dispersion solution and sulfur source dispersion solution are prepared; and then the sulfur source dispersion solution is added into the cadmium source dispersion solution, stirred and mixed, and yellow precipitate is prepared during the reaction; after 10 to 60min of reaction, the mixture after reaction is centrifuged and separated, the separated precipitate is first uniformly mixed with distilled water, ethanol water and absolute ethyl alcohol sequentially and then centrifuged and separated; and the separated precipitate is sent into a drying cabinet to be dried, taken out, and the Q-CdS nanoparticles are prepared. The preparation method of the Q-CdS nanoparticles has the advantages of low cost, no toxin and no harm, recyclable raw materials, no environment pollution, simple used equipment, easily mastered operation conditions and convenience for large-scale production. The distribution scope of the grain size of the nanoparticles is narrow, and the grain size can be controlled through the concentration of the prepared reaction solution, the reaction time and the reaction temperature.

Description

technical field [0001] The invention relates to the field of preparation of inorganic non-metal nanomaterials, in particular to a preparation method of Q-state cadmium sulfide nanoparticles. Background technique [0002] Cadmium sulfide is a typical IIB-IVA optoelectronic semiconductor material. Nanostructured cadmium sulfide materials are widely used in many fields such as photoluminescence, electroluminescence, sensors, infrared window materials, and photocatalysis. One of the research hotspots in this field. Q-state particles (with a particle size of 1 to several nanometers) refer to particles with a total number of 10 atoms 2 ~10 3 , the atomic group whose surface atoms account for 50% of the total number of atoms in the particle, this kind of particle is also called cluster particle, quantum state particle, etc. It forms complex weak interactions with external media, electric double layers, even covalent bonds, coordination bonds, etc. Because its particle size is i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G11/02
Inventor 李冠峰马录芳刘献明秦建华李森兰王利亚
Owner LUOYANG NORMAL UNIV
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