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Preparation method of silver sulfide-zinc sulfide semiconductor nanometer heterojunction

A silver sulfide and zinc sulfide technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as high vacuum requirements, cumbersome preparation process, and expensive equipment

Inactive Publication Date: 2012-12-12
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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  • Preparation method of silver sulfide-zinc sulfide semiconductor nanometer heterojunction
  • Preparation method of silver sulfide-zinc sulfide semiconductor nanometer heterojunction
  • Preparation method of silver sulfide-zinc sulfide semiconductor nanometer heterojunction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 10 mg of the reaction precursor silver dibutyldithiocarbamate to a 50 mL round bottom flask, add 6 mmol of octadecylamine, 2 mmol of n-trioctylphosphine oxide, and 8 mmol of n-octadecylmercaptan in sequence, and put the flask into oil at a constant temperature of 180 ° C. In the bath, magnetically stir and react for 5 minutes. After the reaction is completed and cooled, take out the solution with a dropper to a test tube, dilute with n-hexane, and ultrasonically oscillate for 10 minutes, then centrifuge at a speed of 12000 rpm for 10 minutes. The product sinks to the bottom of the container and discards the supernatant. solution to obtain silver sulfide nanoparticles for later use. Disperse 0.5 mg of silver sulfide nanoparticles in n-hexane, drop them into a 50 mL round bottom flask, add 4 mmol of octadecylamine, heat in an oil bath at a constant temperature of 210°C for 10 min to remove n-hexane, and then add dibutyl disulfide Substituted zinc carbamate 0.05mmol, n...

Embodiment 2

[0020] Add 12 mg of silver dibutyldithiocarbamate, the reaction precursor, into a 50 mL round bottom flask, add 6 mmol of octadecylamine, 4 mmol of n-trioctylphosphine oxide, and 8 mmol of n-octadecylmercaptan in sequence, and put the flask into oil at a constant temperature of 180 ° C. In the bath, magnetically stir and react for 5 minutes. After the reaction is completed and cooled, take out the solution with a dropper to a test tube, dilute with n-hexane, and ultrasonically oscillate for 10 minutes, then centrifuge at a speed of 12000 rpm for 10 minutes. The product sinks to the bottom of the container and discards the supernatant. solution to obtain silver sulfide nanoparticles for later use. Disperse 1.0mg of silver sulfide nanoparticles in n-hexane, drop them into a 50mL round bottom flask, add 8mmol of octadecylamine, put them in an oil bath with a constant temperature of 210°C and heat for 10min to remove n-hexane, then add dibutyl disulfide Substituted zinc carbamate ...

Embodiment 3

[0022] Add 15 mg of silver dibutyldithiocarbamate, the reaction precursor, into a 50 mL round bottom flask, add 8 mmol of octadecylamine, 4 mmol of n-trioctylphosphine oxide, and 16 mmol of n-octadecanethiol in sequence, and put the flask into oil at a constant temperature of 180°C. In the bath, magnetically stir and react for 5 minutes. After the reaction is completed and cooled, take out the solution with a dropper to a test tube, dilute with n-hexane, and ultrasonically oscillate for 10 minutes, then centrifuge at a speed of 12000 rpm for 10 minutes. The product sinks to the bottom of the container and discards the supernatant. solution to obtain silver sulfide nanoparticles for later use. Disperse 2.0mg of silver sulfide nanoparticles in n-hexane, drop them into a 50mL round bottom flask, add 16mmol of octadecylamine, put them in an oil bath at a constant temperature of 210°C and heat for 10min to remove n-hexane, then add dibutyl disulfide Substituted zinc carbamate 0.1mm...

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Abstract

The invention provides a preparation method of a silver sulfide-zinc sulfide semiconductor nanometer heterojunction. The preparation method comprises a step (A) of enabling reaction precursor silver dibutyl dithiocarbamate to undergo pyrolysis in a mixed solvent to obtain silver sulfide particles; and a step (B) of enabling the silver sulfide obtained in the step (A) to serve as a catalyst, enabling an intermediate product formed by pyrolysis of zinc dibutyl dithiocarbamate to be dissolved in the mixed solvent containing the silver sulfide particles, separating out zinc sulfide nanorods from the silver sulfide particles under the effect of trioctylphosphine and n-octadecyl mercaptan, and forming the silver sulfide-zinc sulfide semiconductor nanometer heterojunction. The preparation method of the silver sulfide-zinc sulfide semiconductor nanometer heterojunction is simple and convenient, high in rate of production and suitable for industrial production. The shape and the structure of the silver sulfide-zinc sulfide semiconductor nanometer heterojunction can be controlled under normal pressure, and the rate of production can be over 80%.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a synthesis method of silver sulfide-zinc sulfide nano heterojunction. Background technique [0002] Semiconductor sulfide nanomaterials have quantum size effects and surface effects, and have excellent optical, electrical, magnetic, and catalytic properties, and have broad application prospects in electronics, biology, coatings, and pharmaceutical industries. [0003] 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. Nano-heterojunctions are different from single nano-materials, because the ordered combination of nano-crystals at the microscopic scale can not only maintain the properties of the original materials, but also the effecti...

Claims

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Application Information

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IPC IPC(8): B01J27/04C02F1/30G01N33/00C09K11/58
Inventor 邹超黄少铭张礼杰杨云
Owner WENZHOU UNIVERSITY
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