Manufacturing method of cadmium selenide and cadmium telluride nanometer rod

A nanorod, cadmium telluride technology, applied in nanostructure manufacturing, chemical instruments and methods, binary selenium/tellurium compounds, etc., can solve the problems of expensive phosphate ligands, harsh reaction conditions, and unfavorable industrial production. , to achieve the effect of low preparation cost, mild experimental conditions and strong repeatability

Inactive Publication Date: 2004-09-01
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the metal-organic synthesis method needs to be reacted under anaerobic and anhydrous conditions. The reaction conditions are harsh, the risk is high, and the reaction monomer is highly toxic and difficult to obtain.
People such as Peng Xiaogang improved on this basis, adopted cadmium oxide as the monomer, reduced the risk and toxicity of the reaction, but the phosphoric acid ligands used were expensive, and the reaction required high temperature (T=300-360 ℃), which is not conducive to industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of CdSe Nanorods

[0015] Firstly, 1.60 g of selenium powder was weighed and dissolved in 0.4 g of tributylphosphine to prepare a selenium precursor solution. Then take by weighing 0.625g of cadmium oxide, 3.13g of tetradecanoic acid and 6.2g of trioctylphosphine oxide and place it in the reaction flask, heat it to 230°C under continuous stirring, inject the selenium precursor solution after the solution is transparent, and after 2 minutes, Lower the temperature to 180°C, stop the reaction after 8 hours, add toluene and methanol after the solution is cooled, wash, centrifuge, and dry to obtain cadmium selenide nanorods with a diameter ranging from 3 to 7 nm and an aspect ratio of 2 to 4.

Embodiment 2

[0017] Preparation of CdSe Nanorods

[0018] Firstly, 0.16 g of selenium powder was weighed and dissolved in 0.06 g of tributylphosphine to prepare a selenium precursor solution. Then take by weighing 0.82g of cadmium oxide, 2.1g of tetradecanoic acid and 10.0g of trioctylphosphine oxide and place it in the reaction flask, heat it to 210°C under continuous stirring, inject the pre-prepared selenium precursor solution after the solution is transparent, After 3 minutes, lower the temperature to 170°C, stop the reaction after 16 hours, add toluene and methanol after the solution is cooled, wash, centrifuge, and dry to obtain cadmium selenide nanorods with a diameter of 6-12nm and an aspect ratio of 4 ~7.

Embodiment 3

[0020] Preparation of CdSe Nanorods

[0021] Firstly, 0.25 g of selenium powder was weighed and dissolved in 0.20 g of tributylphosphine to prepare a selenium precursor solution. Then take by weighing 0.64g cadmium oxide, 1.10g tetradecanoic acid and 3.20g trioctylphosphorus oxide are placed in reaction flask, be heated to 190 ℃ under continuous stirring, inject the selenium precursor solution prepared after the solution is transparent, 5 Minutes later, lower the temperature to 160°C, stop the reaction after 12 hours, add toluene and methanol after the solution is cooled, wash, centrifuge, and dry to obtain cadmium selenide nanorods with a diameter of 8 to 15 nm and an aspect ratio of 6 to 10 nm. 10.

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Abstract

The invention relates to the process for preparing cadmium selenide and cadmium telluride nano sticks , wherein cadmium oxide is used as the monomer, and tetradecanoic acid is used as ligand, by controlling the nucleation and growth procedure of the nanocrystalline, and injecting selenium or tellurium precursor solution into the cadmium precursor solution at the temperature of 190 deg. C to 230 deg. C, the nano sticks can be prepared at the temperature of 160-180 deg. C. The advantages of the cadmium selenide and cadmium telluride nano sticks are high yield, narrow dimension distribution, uniform shapes and fine repeatability for experiment.

Description

technical field [0001] The invention belongs to a preparation method of cadmium selenide and cadmium telluride nanorods. Background technique [0002] The study of nanomaterials, especially nanosemiconductor materials, is recognized as one of the most promising disciplines in the 21st century. The preparation and research of one-dimensional or quasi-one-dimensional nano-semiconductor materials will help to understand the nucleation and growth of crystals at the atomic or molecular level, and help to further explore the relationship between quantum size effects and unique physical and chemical properties. It has important guiding significance for the design and manufacture of microelectronic devices at the molecular level in the future. As a member of semiconductor materials, II-VI materials (such as cadmium selenide, cadmium telluride, cadmium sulfide, etc.) are widely used in nano-devices due to their excellent optical, magnetic, and electrical properties. Efficient prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00C01B19/04C01G11/00
Inventor 聂伟刘晓播陈延明姬相玲
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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