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Method for preparing spinel-structure compound nanocrystal

A spinel structure and compound technology, used in tin compounds, manganese compounds, chemical instruments and methods, etc., can solve the problems of only focusing on the consistency of product morphology, ignoring the continuity of crystal structure, etc., to achieve no special equipment requirements, Good universality and low production cost

Active Publication Date: 2014-08-13
江苏天园项目管理集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used template method often only focuses on the consistency of the product morphology with the template, while ignoring the continuity of its crystal structure.

Method used

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  • Method for preparing spinel-structure compound nanocrystal
  • Method for preparing spinel-structure compound nanocrystal
  • Method for preparing spinel-structure compound nanocrystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: MnIn with spinel structure 2 S 4 Preparation of Nanocrystals.

[0029] 1) Weigh 2mmol of indium trichloride and 3mmol of thiourea, add them into a polytetrafluoroethylene-lined autoclave, add 2~3mL of distilled water dropwise, stir and dissolve to form a clear solution, and fill the autoclave with benzene to 80~90% of the volume of the autoclave %, sealed, reacted at a constant temperature of 160°C for 12 hours, cooled naturally to room temperature after the reaction, filtered the product, washed alternately with water and ethanol several times, dried at 60°C for 5 hours, and then fully ground to obtain an indium sulfide precursor.

[0030] 2) Weigh 5mmol sodium diethyldithiocarbamate and 2.5mmol manganese chloride, dissolve them in 20mL distilled water respectively, and gradually add the manganese chloride solution dropwise to the sodium diethyldithiocarbamate solution under magnetic stirring After the reaction, the resulting precipitate was filtered, wash...

Embodiment 2

[0033] Example 2: CuIn with spinel structure 5 S 8 Preparation of Nanocrystals.

[0034] 1) Weigh 2mmol of indium trichloride and 3mmol of thiourea, add them into a polytetrafluoroethylene-lined autoclave, add 2~3mL of distilled water dropwise, stir and dissolve to form a clear solution, and fill the autoclave with benzene to 80~90% of the volume of the autoclave %, sealed, reacted at a constant temperature of 160°C for 12 hours, cooled naturally to room temperature after the reaction, filtered the product, washed alternately with water and ethanol several times, dried at 60°C for 5 hours, and then fully ground to obtain an indium sulfide precursor.

[0035] 2) Weigh 5mmol sodium diethyldithiocarbamate and 2.5mmol copper chloride, dissolve them in 20mL distilled water respectively, and gradually add the copper chloride solution dropwise to the sodium diethyldithiocarbamate solution under magnetic stirring After the reaction, the resulting precipitate was filtered, washed alter...

Embodiment 3

[0038] Example 3: spinel structure In 4 SnS 8 Preparation of Nanocrystals.

[0039] 1) Weigh 2mmol of indium trichloride and 3mmol of thiourea, add them into a polytetrafluoroethylene-lined autoclave, add 2~3mL of distilled water dropwise, stir and dissolve to form a clear solution, and fill the autoclave with benzene to 80~90% of the volume of the autoclave %, sealed, reacted at a constant temperature of 160°C for 12 hours, cooled naturally to room temperature after the reaction, filtered the product, washed alternately with water and ethanol several times, dried at 60°C for 5 hours, and then fully ground to obtain an indium sulfide precursor.

[0040] 2) Weigh 8mmol of sodium diethyldithiocarbamate and 2mmol of tin tetrachloride, dissolve them in 30mL of distilled water, and gradually add the tin tetrachloride solution dropwise to sodium diethyldithiocarbamate under magnetic stirring In the solution, after the reaction, the resulting precipitate was filtered, washed altern...

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Abstract

A method for preparing a spinel-structure compound nanocrystal is characterized by comprising the steps ofsolvothermal synthesis of a spinel-structure indium sulfide precursor, preparation of a metal organic compound precursor, preparation of a reaction liquid, liquid-phase synthesis of a spinel-structure multi-sulfide, washing treatment and the like. The related technical method has the following obvious advantages: 1, the method has the advantages of simple process, convenient operation, no special equipment requirements, and low production cost; 2, the preparation technology is a wet chemical method, the reaction temperature is low, and the particle size of the product is small; and 3, a structural template method has quite good universality in preparation of spinel-structure M-In-S series compounds.

Description

technical field [0001] The invention belongs to the field of inorganic material chemistry and relates to a general preparation method of polysulfide series nanocrystals. Background technique [0002] Polynary chalcogenides are important functional materials. First of all, due to the structural characteristics of multi-component compounds, their lattice parameters and optical energy gaps are potentially adjustable, so that they can be "tailored" to meet some special requirements, and exhibit rich physical and chemical properties. , spintronics, nonlinear optics, optoelectronics, and solid-state electrolytes have broad application prospects; secondly, most of the polynary chalcogenides have a direct bandgap that closely matches the solar spectrum and an efficient absorption coefficient for visible light, and exhibit Due to its low surface recombination rate, good stability and strong radiation resistance, it has become the most potential high-efficiency solar cell absorber ma...

Claims

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Application Information

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IPC IPC(8): C01G1/12C01G45/00C01G15/00C01G19/00C01G49/12B82Y40/00B82Y30/00
Inventor 雷水金陈联富汪春英
Owner 江苏天园项目管理集团有限公司
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