Synthesis method and application of copper-indium sulfide ternary quantum dots with D-penicillamine as ligand

A technology of ternary quantum dots and penicillamine, which is applied in the field of biochemistry, can solve the problems of heavy metal inherent toxicity and limit the application, and achieve the effect of short synthesis time and cheap raw materials

Inactive Publication Date: 2019-08-16
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, quantum dots containing Cd have been widely reported, but the inherent toxicity of heavy metals severely limits its application.

Method used

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  • Synthesis method and application of copper-indium sulfide ternary quantum dots with D-penicillamine as ligand
  • Synthesis method and application of copper-indium sulfide ternary quantum dots with D-penicillamine as ligand
  • Synthesis method and application of copper-indium sulfide ternary quantum dots with D-penicillamine as ligand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] According to the molar ratio of 1:1:2:4, take CuCl respectively 2 2H 2 O, InCl 3 4H 2 O, thiourea and D-penicillamine, D-penicillamine is completely dissolved in distilled water, add CuCl 2 2H 2 O and InCl 3 4H 20, form a mixed solution, under the condition of nitrogen protection and stirring, the NaOH solution that the molar volume concentration is 4mol / L is dropped in this mixed solution, until the pH value of this mixed solution is 11.0, after continuing to stir for 10 min, quickly Add thiourea and stir for 40 min to obtain the reaction solution; the reaction solution was transferred into a polytetrafluoroethylene-lined stainless steel reactor, and the reactor was placed in an oven at 150°C for 20 h, taken out, and naturally cooled to room temperature , to obtain the clarified liquid; according to the volume ratio of 1:10, take the clarified liquid and absolute ethanol respectively, add absolute ethanol to the clarified liquid to produce a precipitate, centrifu...

Embodiment 2

[0030] According to the molar ratio of 1:5:5:24, take CuCl respectively 2 2H 2 O, InCl 3 4H 2 O, thiourea and D-penicillamine, D-penicillamine is completely dissolved in distilled water, add CuCl 2 2H 2 O and InCl 3 4H 2 0, form a mixed solution, under the condition of nitrogen protection and stirring, the NaOH solution that the molar volume concentration is 5 mol / L is dripped in this mixed solution, until the pH value of this mixed solution is 12.0, after continuing to stir for 15 min, Add thiourea quickly, and then stir for 50 min to obtain the reaction solution; the reaction solution was transferred into a polytetrafluoroethylene-lined stainless steel reactor, and the reactor was placed in an oven at 160 °C for 24 h, taken out, and cooled naturally to At room temperature, get the clarified liquid; according to the volume ratio 1:12, take the clarified liquid and absolute ethanol respectively, add absolute ethanol to the clarified liquid to produce a precipitate, centr...

Embodiment 3

[0032] According to the molar ratio of 1:3:3.5:14, take CuCl respectively 2 2H 2 O, InCl 3 4H 2 O, thiourea and D-penicillamine, D-penicillamine is completely dissolved in distilled water, add CuCl 2 2H 2 O and InCl 3 4H 2 0, form a mixed solution, under the condition of nitrogen protection and stirring, the NaOH solution that the molar volume concentration is 4.5 mol / L is dripped in this mixed solution, until the pH value of this mixed solution is 11.5, after continuing to stir for 13 min, Quickly add thiourea, and then stir for 45 minutes to obtain a reaction solution; the reaction solution is transferred to a polytetrafluoroethylene-lined stainless steel reactor, and the reactor is placed in an oven at 155°C for 22 hours, taken out, and naturally cooled to room temperature , to obtain the clarified liquid; according to the volume ratio of 1:11, take the clarified liquid and absolute ethanol respectively, add absolute ethanol to the clarified liquid to produce a precip...

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Abstract

The invention discloses a synthesis method and an application of copper-indium sulfide ternary quantum dots with D-penicillamine as a ligand. The synthesis method comprises the following steps: completely dissolving D-penicillamine in distilled water, adding CuCl2.2H2O and InCl3.4H2O to obtain a mixed solution, adjusting the mixed solution to be alkaline under nitrogen-protecting and stirring conditions, continuously performing stirring, rapidly adding thiourea, and performing stirring to obtain a reaction solution; carrying out a reaction at a certain temperature, and naturally cooling the obtained reaction product to room temperature in order to obtain a clear liquid; and adding anhydrous ethanol to the clear liquid to form a precipitate, repeatedly centrifuging the obtained solution, removing the obtained supernatant, and carrying out vacuum drying and grinding on the obtained precipitate to obtain the copper-indium sulfide ternary quantum dots with D-penicillamine as the ligand. The ternary quantum dots are applied to solar cells and bio-optical imaging materials. The synthesis method has the advantages of short synthesis time, greenness and environmental protection, and the raw material of the water phase synthesis method is cheap, slightly toxic and environmentally friendly, and can be directly applied to biological systems.

Description

technical field [0001] The invention belongs to the technical field of biochemistry, and relates to a method for synthesizing copper indium sulfur ternary quantum dots with D-penicillamine as a ligand. The invention also relates to an application of the ternary quantum dot. Background technique [0002] Quantum dots (Quantum dots, QDs), also known as semiconductor nanocrystals, are approximately spherical, and their three-dimensional size is in the range of 2 to 10 nm, and has obvious quantum effects. Quantum dots are generally composed of semiconductor materials such as group II-VI elements (such as CdS, CdSe, CdTe, ZnSe, etc.) or group III-V elements (cadmium-free quantum dots, such as InP, InAs, etc.), and can also be composed of two or two The above semiconductor materials form a core / shell structure (such as common CdSe / ZnS core / shell structure quantum dots, etc.). Quantum dots (QDs) are the state of matter between the macroscopic bulk phase and the microscopic molecu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06B82Y20/00B82Y40/00
CPCB82Y20/00B82Y40/00C09K11/06C09K2211/188
Inventor 关晓琳李志飞王林刘美娜王凯龙陈晟来守军
Owner NORTHWEST NORMAL UNIVERSITY
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