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A method for in-situ preparation of zinc sulfide quantum dots/alginic acid nanocomposite film by electrodeposition technology

An in-situ preparation and nanocomposite technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems that quantum dots and natural polymer composite materials have not seen related patents and literature reports, and achieve good biocompatibility, Simple equipment, uniform surface effect

Active Publication Date: 2020-08-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current electrodeposition work of quantum dots and natural polymers all adopts the method of co-deposition, and we have not seen relevant patents and literature reports on the research on the in-situ preparation of quantum dots and natural polymer composites using electrodeposition technology

Method used

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  • A method for in-situ preparation of zinc sulfide quantum dots/alginic acid nanocomposite film by electrodeposition technology
  • A method for in-situ preparation of zinc sulfide quantum dots/alginic acid nanocomposite film by electrodeposition technology
  • A method for in-situ preparation of zinc sulfide quantum dots/alginic acid nanocomposite film by electrodeposition technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of electrodeposition technology prepares the method for zinc sulfide quantum dot / alginic acid nanocomposite film in situ, it comprises following specific steps:

[0031] 1) Preparation of sodium sulfide solution: Weigh 0.48 g of sodium sulfide solid particles, add it to a beaker filled with 100 mL of distilled water, stir magnetically at room temperature for 1 hour until the sodium sulfide solid particles are completely dissolved, and prepare a molar concentration of 0.02M Sodium sulfide solution;

[0032] 2) Preparation of alginic acid solution: Weigh 1 g of sodium alginate solid powder, add it to a beaker filled with 100 mL of distilled water, stir magnetically at room temperature for 4 hours until sodium alginate is fully dissolved, and prepare a concentration of 1.0% by mass sodium alginate solution;

[0033] 3) Prepare the electrodeposition solution of sodium sulfide and alginic acid: take 20ml of the sodium sulfide solution prepared in step 1), add it to a...

Embodiment 2

[0038] A kind of electrodeposition technology prepares the method for zinc sulfide quantum dot / alginic acid nanocomposite film in situ, it comprises following specific steps:

[0039] 1) Preparation of sodium sulfide solution: Weigh 0.96 g of sodium sulfide solid particles, add it to a beaker filled with 100 mL of distilled water, stir magnetically at room temperature for 2 hours until the sodium sulfide solid particles are completely dissolved, and prepare a molar concentration of 0.04M Sodium sulfide solution;

[0040] 2) Preparation of alginic acid solution: Weigh 2 g of sodium alginate solid powder, add it to a beaker filled with 100 mL of distilled water, stir magnetically at room temperature for 6 hours until sodium alginate is fully dissolved, and prepare a concentration of 2.0% by mass sodium alginate solution;

[0041] 3) Prepare the electrodeposition solution of sodium sulfide and alginic acid: take 30ml of the sodium sulfide solution prepared in step 1), add it to ...

Embodiment 3

[0046] A kind of electrodeposition technology prepares the method for zinc sulfide quantum dot / alginic acid nanocomposite film in situ, it comprises following specific steps:

[0047] 1) Preparation of sodium sulfide solution: Weigh 2.4 g of sodium sulfide solid particles, add it to a beaker filled with 200 mL of distilled water, stir magnetically at room temperature for 2 hours until the sodium sulfide solid particles are completely dissolved, and prepare a molar concentration of 0.05M Sodium sulfide solution;

[0048] 2) Preparation of alginic acid solution: Weigh 4g of sodium alginate solid powder, add it to a beaker filled with 200mL of distilled water, stir magnetically at room temperature for 8 hours until sodium alginate is fully dissolved, and prepare a concentration of 2.0% by mass sodium alginate solution;

[0049] 3) Preparation of sodium sulfide and alginic acid electrodeposition solution: take 50ml of the sodium sulfide solution prepared in step 1), add it to a b...

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Abstract

The invention relates to a method for preparing a zinc sulfide quantum dot / alginate nanocomposite film in situ through the electrodeposition technology. The method is characterized in that: a mixed solution of sodium sulfide and alginate is taken as an electrodeposition solution, a metal zinc sheet is taken as an anode metal electrode material for electrodeposition to conduct electrodeposition; and the electrochemical reaction generated on the metal zinc sheet is used to produce a zinc ion in the process of electrodeposition, and then the coordination of the alginate and the zinc ion and the reaction between the zinc ion and sulfion are used to prepare the zinc sulfide quantum dot / alginate nanocomposite film in situ on the electrode. The method has the characteristics of simple operation,easiness in control, no use of organic solvents, environment protection, mild preparation condition, selectivity and controllability and the like; and the prepared zinc sulfide quantum dot / alginate nanocomposite film material has the performance characteristics of excellent biocompatibility, nontoxicity, biodegradability and the like, and has an excellent application prospect in the fields of biomedical functional materials and bio-electronic devices.

Description

technical field [0001] The invention belongs to the fields of nanomaterials, polymer materials, biomaterials and electrochemistry, and relates to a method for in-situ preparation of quantum dots and natural polymer composite membrane materials using electrodeposition technology, in particular to an in-situ preparation of electrodeposition technology A method for zinc sulfide quantum dot / alginic acid nanocomposite films. Background technique [0002] Quantum dots, also known as semiconductor nanocrystals, are nanomaterials composed of II-VI or III-V atoms, generally in the size of 2-10nm. Compared with organic fluorescent dyes and fluorescent proteins, it has unique optical properties, such as adjustable emission spectrum, strong fluorescence intensity, better photostability, etc. Detection and other fields have broad application prospects [Nature methods, 2008, 5: 763-775]. At present, quantum dots are widely used in different bioimaging and bioluminescent labeling fields,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/56C09K11/02
CPCC09K11/025C09K11/565
Inventor 王艺峰陈炜郝程远胡倩殷洁钟波
Owner WUHAN UNIV OF TECH