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Method for solvent thermal growth of cubic phase CdTe nano belt

A cubic phase and nanobelt technology, applied in the direction of binary selenium/tellurium compounds

Inactive Publication Date: 2012-11-07
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] As can be seen, the preparation of CdTe nanobelts using a simple solvothermal method has not been reported

Method used

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  • Method for solvent thermal growth of cubic phase CdTe nano belt
  • Method for solvent thermal growth of cubic phase CdTe nano belt
  • Method for solvent thermal growth of cubic phase CdTe nano belt

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 3mmol tellurium powder (0.3828gTe), 0.35gKBH 4 Dissolved in a small amount of water, isolated from the air and left to stand until the solution turns from black to pink, that is, Te 2- solution; 3mmol cadmium chloride (0.6851gCdCl 2 2.5H 2 O) Dissolved in a small amount of water to obtain Cd after complete dissolution 2+ The solution. When the two solutions were mixed, a strong reaction occurred, a large amount of gas was generated, and the color of the solution quickly turned black. When the reaction gradually slows down, add ethylenediamine so that the volume ratio of the total volume of front and rear water to ethylenediamine is about 1:4. After stirring for a period of time, transfer to a polytetrafluoroethylene hydrothermal reaction kettle so that the volume of the solution accounts for about 80% of the total volume of the container. Seal and store in a high-temperature oven at 160°C for 48 hours. After the reaction is completed, it is cleaned, and the obtain...

Embodiment 2

[0026] 3mmol tellurium powder (0.3828gTe), 0.35gKBH 4 Dissolved in a small amount of water, isolated from the air and left to stand until the solution turns from black to pink, that is, Te 2- The solution; 3mmol cadmium acetate (0.7996gCd (CH 3 COO) 2 2H 2 O) Dissolved in a small amount of water to obtain Cd after complete dissolution 2+ The solution. When the two solutions were mixed, a strong reaction occurred, a large amount of gas was generated, and the color of the solution quickly turned black. When the reaction gradually slows down, add ethylenediamine so that the volume ratio of the total volume of front and rear water to ethylenediamine is about 1:4. After stirring for a period of time, transfer to a polytetrafluoroethylene hydrothermal reaction kettle so that the volume of the solution accounts for about 80% of the total volume of the container. Seal and store in a high-temperature oven at 160°C for 48 hours. After the reaction is completed, it is cleaned, and...

Embodiment 3

[0028] 3mmol tellurium powder (0.3828gTe), 0.35gKBH 4 Dissolved in a small amount of water, isolated from the air and left to stand until the solution turns from black to pink, that is, Te 2- solution; 3mmol cadmium nitrate (0.9254gCd(NO 3 ) 2 4H 2 O) Dissolved in a small amount of water to obtain Cd after complete dissolution 2+ The solution. When the two solutions were mixed, a strong reaction occurred, a large amount of gas was generated, and the color of the solution quickly turned black. When the reaction gradually slows down, add ethylenediamine so that the volume ratio of the total volume of front and rear water to ethylenediamine is about 1:4. After stirring for a period of time, transfer to a polytetrafluoroethylene hydrothermal reaction kettle so that the volume of the solution accounts for about 80% of the total volume of the container. Seal and store in a high-temperature oven at 160°C for 48 hours. After the reaction is completed, it is cleaned, and the obt...

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Abstract

The invention discloses a method for solvent thermal growth of a cubic phase CdTe nano belt, which is implemented through the following technical processes: reducing tellurium powder (Te) into solution of Te2- by using potassium borohydride; and adding a Cd source and aqueous solution of ethylene diamine in turn, sealing and keeping at high temperature for one day, cleaning samples after reactionso as to prepare black solid, namely a cubic-phase cadmium telluride nano belt. The method has the characteristics of simpleness, high yield, high uniformity of the prepared CdTe nano belt, low environmental damage, easy popularization and suitability for large-scale industrial production.

Description

technical field [0001] The invention relates to a method for solvothermally growing CdTe nanobelts in a binary mixed solvent system of water and ethylenediamine. Background technique [0002] CdTe is a photoelectric material with a direct band gap of about 1.5eV. It has a high absorption coefficient in the solar spectrum band and can effectively convert solar energy into electrical energy. It is an excellent photovoltaic energy material. In recent years, research reports on nanomaterials have shown that nanoscale materials may have better performance, and devices with better performance can be prepared. Among the many methods for preparing nanomaterials, the hydrothermal solvothermal method has many advantages and has developed rapidly in recent years. It is simple to operate, low in temperature, less polluting to the environment, and has good product dispersion and uniformity. Since the preparation process is carried out in a completely sealed environment, the escape and r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04
Inventor 李锦李先卯简基康孙言飞吴荣
Owner XINJIANG UNIVERSITY
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