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Preparation method for oxide quantum dots loaded in flexible superfine porous carbon nanofiber

A technology of nanofibers and nanofiber membranes, applied in the fields of fiber chemical characteristics, fiber treatment, rayon manufacturing, etc., can solve the problems of brittleness of composite materials, complex synthesis process, low yield, etc., achieve small particle size, simple steps, The effect of high porosity

Inactive Publication Date: 2021-08-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the synthesis process of the porous carbon nanofiber loaded oxide quantum dot composite material in the prior art is complex, the yield is low, toxic raw materials and reagents are needed, and the prepared composite material has problems such as brittleness

Method used

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  • Preparation method for oxide quantum dots loaded in flexible superfine porous carbon nanofiber
  • Preparation method for oxide quantum dots loaded in flexible superfine porous carbon nanofiber
  • Preparation method for oxide quantum dots loaded in flexible superfine porous carbon nanofiber

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Embodiment 1

[0030] A method for preparing flexible ultrafine porous carbon nanofiber-loaded zirconia quantum dots, the specific steps comprising:

[0031] (1) Configure a precursor solution consisting of polymer carbon source, solvent, pore-forming agent and metal salt: 0.9g polyvinylpyrrolidone (Aladdin, PVP, molecular weight 1300000) is dissolved in 5.1g distilled water at room temperature, Stir for 240min to configure a mass fraction of 10% polyvinylpyrrolidone solution, then add 0.01 mole of zirconium acetate (Aladdin) to the PVP solution, stir for 180min, and finally add 3g polytetrafluoroethylene emulsion (purchased from Dongguan Xingwang Plastic Co., Ltd. Raw material limited company, solid content 60%, particle size 0.2 μm), stirring to form a uniformly mixed precursor solution.

[0032] (2) Electrospinning the obtained precursor solution. Under the action of an electric field, the charge repulsion on the surface of the charged droplet exceeds its surface tension, forming a jet fr...

Embodiment 2

[0041] A method for preparing flexible ultrafine porous carbon nanofiber-loaded silicon oxide quantum dots, the specific steps comprising:

[0042] (1) Configure a precursor solution consisting of polymer carbon source, solvent, pore-forming agent and metal salt: 0.9g polyvinylpyrrolidone (Aladdin, PVP, molecular weight 1300000) is dissolved in 5.1g distilled water at room temperature, Stir for 240min to configure a polyvinylpyrrolidone solution with a mass fraction of 10%, then add 5g tetraethyl silicate (Aladdin) and 0.05g phosphoric acid (Aladdin) to the PVP solution, stir for 180min, and finally add 3g polytetrafluoroethylene to the solution Vinyl fluoride emulsion (purchased from Dongguan Xingwang Plastic Raw Materials Co., Ltd., solid content 60%, particle size 0.2 μm), stirred to form a uniformly mixed precursor solution.

[0043] (2) Electrospinning the obtained precursor solution. Under the action of an electric field, the charge repulsion on the surface of the charge...

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Abstract

The invention discloses a preparation method for oxide quantum dots loaded in flexible superfine porous carbon nanofiber. The preparation method comprises the following steps of firstly, dissolving a high-molecular polymer carbon source in a solvent, sequentially adding a metal salt and a pore-forming agent, performing uniform mixing to prepare a stable precursor solution, and then performing electrostatic spinning on the precursor solution to obtain a precursor nanofiber membrane; calcining the obtained precursor nanofiber membrane in an air atmosphere to obtain a pre-oxidized fiber membrane; and performing high-temperature carbonization on the obtained pre-oxidized fiber membrane in an inert atmosphere to obtain a flexible superfine porous carbon nanofiber membrane loaded with the highly-dispersed oxide quantum dots. According to the preparation method for the oxide quantum dots loaded in the flexible superfine porous carbon nanofiber, the process is simple, and the prepared oxide quantum dots are small in particle size and high in loading rate, are highly and uniformly dispersed in the superfine porous carbon nanofiber, and have wide application prospects in the fields of flexible electronics, energy and catalysis.

Description

technical field [0001] The invention relates to a preparation method of flexible ultrafine porous carbon nanofiber loaded oxide quantum dots, which belongs to the technical field of new materials and chemical industry. Background technique [0002] Quantum dots (Quantum Dots, QDs) are a class of quasi-zero-dimensional nanomaterials composed of a small number of atoms and generally spherical or spherical in appearance. Due to the characteristics of small size, large specific surface area, and easy stress relaxation, quantum dot materials have attracted extensive attention in the field of electrode materials for alkali metal ion batteries. The small size is beneficial to shorten the ion diffusion distance, and the large specific surface area is not only beneficial to increase the electrode / electrolyte contact area, but also can increase the storage capacity through the electric double layer capacitance and surface redox reaction, and the stress relaxation is beneficial to reli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4326D04H1/4382D04H1/728D06C7/04D01D5/00D01F9/21D01F1/10
CPCD04H1/4326D04H1/4382D04H1/728D06C7/04D01D5/003D01D5/0092D01D5/0076D01F9/21D01F1/10
Inventor 闫建华张苑苑俞建勇丁彬
Owner DONGHUA UNIV
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