Preparation method of water-soluble antimony-carbon quantum dots, prepared antimony-carbon quantum dots, application thereof and corrosion-resistant composite material

An antimony carbon quantum, water-soluble technology, applied in the fields of nanotechnology, luminescent materials, chemical instruments and methods for materials and surface science, can solve the problems of poor water solubility of antimony quantum dots, low antimonene yield, etc. Obviously, the effect of shortening the reaction time and uniform particle size

Active Publication Date: 2021-12-17
EAST CHINA JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide the preparation method of water-soluble antimony carbon quantum dots and the prepared antimony carbon quantum dots, its application and corrosion-resistant composite material, overcome the poor water solubility of antimony quantum dots in the prior art, electrolytic stripping under a single electrolyte The low output of antimonene and other problems

Method used

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  • Preparation method of water-soluble antimony-carbon quantum dots, prepared antimony-carbon quantum dots, application thereof and corrosion-resistant composite material
  • Preparation method of water-soluble antimony-carbon quantum dots, prepared antimony-carbon quantum dots, application thereof and corrosion-resistant composite material
  • Preparation method of water-soluble antimony-carbon quantum dots, prepared antimony-carbon quantum dots, application thereof and corrosion-resistant composite material

Examples

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Effect test

Embodiment 1

[0036] Mix 0.5mol / L sodium sulfate solution with ethylene glycol, and the volume ratio of ethylene glycol and sodium sulfate solution is 1:10 to obtain a mixed electrolyte. Put the antimony block (cathode) and platinum sheet (positive electrode) into the mixed electrolyte for electrolysis, 1 / 2 of the cathode antimony block is placed in the electrolyte, and the electrolysis is carried out at a voltage of 5V, and the current density ranges from 0.1 to 0.8A / cm 2 , After 12 hours of electrolysis, add sodium hydroxide, the mass volume ratio of sodium hydroxide and ethylene glycol is 10g:20mL, stir for 2 hours, and let stand for 24 hours. Take the red liquid in the upper layer and centrifuge at 11000rpm for 25min to remove large particles and then dialyze for 3 days, changing deionized water every 3h. The solution after dialysis is as follows: figure 1 shown, and then dried at 70° C. for 24 h to obtain water-soluble antimony carbon quantum dots with a calculated yield of 90%. fi...

Embodiment 2

[0039] Mix 0.4mol / L sodium sulfate solution with ethylene glycol, and the volume ratio of ethylene glycol and sodium sulfate solution is 1:15 to obtain a mixed electrolyte. Put the antimony rod (cathode) and platinum wire (positive electrode) into the mixed electrolyte for electrolysis, 1 / 2 of the cathode antimony rod is placed in the electrolyte, and the electrolysis is carried out at a voltage of 10V, and the current density ranges from 0.5 to 1.2A / cm 2 , after 6 hours of electrolysis, add potassium hydroxide, the mass volume ratio of potassium hydroxide and ethylene glycol is 15g:20mL, stir for 4 hours, and let stand for 6 hours. The red liquid in the upper layer was centrifuged at 10,000rpm for 30 minutes to remove large particles and then dialyzed for 3 days. The deionized water was changed every 3 hours, and then dried at 60°C for 36 hours to obtain water-soluble antimony carbon quantum dots with a calculated yield of 95%. Figure 5 It shows that the particle size of t...

Embodiment 3

[0041] Mix 0.6mol / L sodium chloride solution with ethylene glycol, and the volume ratio of ethylene glycol to sodium chloride solution is 1:20 to obtain a mixed electrolyte. Put the antimony plate (cathode) and platinum wire (positive electrode) into the mixed electrolyte for electrolysis, 1 / 4 of the cathode antimony plate is placed in the electrolyte, and the electrolysis is performed at a voltage of 20V, and the current density ranges from 0.5 to 1.2A / cm 2 , After 24 hours of electrolysis, add sodium hydroxide and potassium hydroxide, the mass volume ratio of sodium hydroxide and potassium hydroxide to ethylene glycol is 20g:20mL, stir for 6 hours, and let stand for 12 hours. The red liquid in the upper layer was centrifuged at 12000rpm for 20min to remove large particles and then dialyzed for 3 days, changing deionized water every 3h, and then drying at 80°C for 12h to obtain water-soluble antimony carbon quantum dots with a calculated yield of 92%. The synthesized water-...

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Abstract

The invention discloses a preparation method of water-soluble antimony carbon quantum dots, the prepared antimony carbon quantum dots, an application thereof and a corrosion-resistant composite material, and belongs to the technical field of nano composite materials. The method comprises the following steps: mixing a neutral salt solution with water-soluble alcohol to obtain a mixed electrolyte; putting an antimony electrode and a platinum electrode into the mixed electrolyte for electrolysis, adding strong base after electrolysis is completed, and performing standing after stirring; and sequentially centrifuging, dialyzing and drying the supernatant liquid after standing to obtain the water-soluble antimony carbon quantum dots. The prepared water-soluble antimony carbon quantum dots are obvious in characteristic and uniform in particle size, the defects that a traditional ultrasonic method and an electrochemical method are long in preparation time, low in yield and the like are fully overcome, and the water-soluble antimony carbon quantum dots with the particle size being 5-10 nm can be obtained. Meanwhile, the method greatly shortens the reaction time, the yield is high, and the prepared water-soluble antimony carbon quantum dots have an excellent corrosion inhibition function and are worthy of being widely popularized and applied.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a preparation method of water-soluble antimony carbon quantum dots, the prepared antimony carbon quantum dots, an application thereof and a corrosion-resistant composite material. Background technique [0002] Antimonene in the fifth main group of two-dimensional materials has potential applications in conductive electrodes and energy storage due to its high stability at room temperature, high electron mobility, and good light transmittance. In recent years, due to a series of excellent properties such as strong quantum confinement effect and stable fluorescence performance, two-dimensional material quantum dots have attracted extensive attention of scientists in various fields such as chemistry, physics, materials and biology. As a derivative of antimonene, antimonene quantum dots not only have the properties of antimonene, but also have potential application val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/75B82Y20/00B82Y30/00B82Y40/00C09D163/00C09D5/08
CPCC09K11/74B82Y20/00B82Y30/00B82Y40/00C09D163/00C09D5/08C08K3/04C08K3/2279
Inventor 张仁辉何忠义熊丽萍
Owner EAST CHINA JIAOTONG UNIVERSITY
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