Nano heterojunction and preparation method thereof

A heterojunction and nanotechnology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of expensive equipment, cumbersome preparation process, high vacuum degree requirements, etc., achieve simple preparation method, overcome complex reaction conditions, The effect of high yield

Inactive Publication Date: 2013-07-24
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the equipment required by the gas phase method is expensive, the vacuum degree is high, and the preparation process is relatively cumbersome.

Method used

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  • Nano heterojunction and preparation method thereof
  • Nano heterojunction and preparation method thereof
  • Nano heterojunction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 1.0mg silver dibutyldithiocarbamate and reaction precursors 0.4mmol copper acetylacetonate, 0.04mmol indium acetylacetonate, 1.2mmol zinc acetylacetonate into a 200mL round bottom flask, add octadecylamine 125mmol, octadecene 100 mmol, 85 mmol of n-stearcaptan, put the flask into an oil bath at a constant temperature of 200°C, and react for 1 hour under magnetic stirring. Then ultrasonically disperse the mixed solution of 3mmol cadmium diisopropyldithiocarbamate, 30mmol oleylamine, and 165mmol dodecanethiol into the above-mentioned reaction solution, and then react for 1 hour with magnetic stirring in an oil bath at a constant temperature of 240°C. After the reaction, cool to room temperature, take out the original solution, dilute with n-hexane, oscillate ultrasonically for 5 minutes, and centrifuge at 10,000 rpm for 5 minutes. The nano-heterojunctions settle at the bottom of the container, and discard the supernatant.

Embodiment 2

[0021] Add 1.0mg silver diethyldithiocarbamate and reaction precursors 0.6mmol copper acetylacetonate, 6mmol indium acetylacetonate, 0.6mmol zinc acetylacetonate to a 250mL round bottom flask, add dodecylamine 65mmol, octadecene 100mmol , 165 mmol of a mixture of hexanethiol and dodecanethiol (the molar ratio of the two is 3:2), put the flask in an oil bath with a constant temperature of 200°C, and react for 1 hour under magnetic stirring. Then ultrasonically disperse a mixed solution of 5mmol cadmium dibutyldithiocarbamate, 30mmol oleylamine, and 165mmol dodecanethiol into the above reaction solution, and then react for 1 hour with magnetic stirring in an oil bath at a constant temperature of 160°C. After the reaction, cool to room temperature, take out the original solution, dilute with n-hexane, oscillate ultrasonically for 5 minutes, and centrifuge at 10,000 rpm for 5 minutes. The nano-heterojunctions settle at the bottom of the container, and discard the supernatant.

Embodiment 3

[0023] Add 1.0mg silver dibutyldithiocarbamate and reaction precursor 0.8mmol copper acetylacetonate, 0.1mmol indium acetylacetonate, 4mmol zinc acetylacetonate into a 200mL round bottom flask, add 125mmol oleylamine, 100mmol octadecene, 85 mmol of n-stearyl mercaptan, put the flask into an oil bath with a constant temperature of 200°C, and react for 1 hour under magnetic stirring. Then ultrasonically disperse the mixed solution of 6mmol cadmium diethyldithiocarbamate, 60mmol oleylamine, and 85mmol dodecanethiol into the above-mentioned reaction solution, and then react for 1 hour with magnetic stirring in an oil bath at a constant temperature of 160°C. After the reaction, cool to room temperature, take out the original solution, dilute with n-hexane, oscillate ultrasonically for 5 minutes, and centrifuge at 10,000 rpm for 5 minutes. The nano-heterojunctions settle at the bottom of the container, and discard the supernatant.

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Abstract

The invention provides a sulfide nano heterojunction. The nano heterojunction includes copper, indium, zinc, and cadmium, and the expression of the elements is Cu-In-Zn-S / CdS. The present invention accordingly provides a preparation method of the nano heterojunction, comprising the following steps: step A, mixing raw materials of copper acetylacetonate, indium acetylacetonate, zinc acetylacetonate and an Ag2S catalyst decomposed from silver thiocarbamate in a first mixed solvent to resolve and dissolve Cu-In-Zn-S nanorods, wherein the first mixed solvent includes octadecene; and step B, and adding a cadmium thiocarbamate compound and a second mixed solvent to the Cu-In-Zn-S nanorods to form a Cu-In-Zn-S / CdS nano heterojunction. The preparation method provided by the present invention is simple, suitable for industrial production, and high in yield, and the yield of the nano-heterojunction is up to 80%.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a sulfide semiconductor nano-heterojunction and a preparation method thereof. Background technique [0002] Heterostructure semiconductor nanomaterials, which combine two nanomaterials with different chemical compositions, can not only exert the functional characteristics of their respective components, but also produce new characteristics due to the combination of different components. Semiconductor materials with nano-heterostructures have become one of the most active research topics due to their incomparably excellent performance, and their research work in the fields of optoelectronics, biomedical imaging, photocatalysis, and energy conversion has been carried out one after another. [0003] Among heterostructure semiconductor nanomaterials, one-dimensional heterostructure nanowires that can realize special functions are of special significance for nanoelectronic devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B82Y30/00
Inventor 邹超张伟黄少铭
Owner WENZHOU UNIVERSITY
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