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Functionalized nano-fiber heavy metal ion adsorbing material and preparation method thereof

A technology of heavy metal ions and nanofibers, which is applied in chemical instruments and methods, and other chemical processes, can solve problems such as difficult to efficiently adsorb and enrich samples with small volumes and large particle sizes, and achieve simple and safe preparation methods with low usage volume. The effect of small, large specific surface area

Inactive Publication Date: 2010-06-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a functional nanofiber heavy metal ion adsorption material, which solves the problems in the prior art that the particle size of the heavy metal ion adsorption material is large, it is difficult to efficiently adsorb and enrich samples with small volumes, etc.

Method used

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  • Functionalized nano-fiber heavy metal ion adsorbing material and preparation method thereof
  • Functionalized nano-fiber heavy metal ion adsorbing material and preparation method thereof
  • Functionalized nano-fiber heavy metal ion adsorbing material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] Preparation and adsorption performance experiment of the functionalized polystyrene nanofiber adsorbent of embodiment 1

[0035] Add polystyrene into an appropriate amount of N,N-dimethylformamide-tetrahydrofuran (4:6) mixed solvent to make the mass volume fraction 10%, stir until dissolved, then add an appropriate amount of dithizone to make bis The mass fraction of thizone in the spinning solution reaches 0.25%-0.5%. After the dithizone is dissolved, the stirring is continued for a period of time.

[0036] The functionalized polystyrene solution was spun into nanofibers using an electrospinning device. Electrospinning device such as figure 1As shown, the polymer solution 2 is sucked into the glass syringe equipped with the injection needle 3 by the propeller 1 (which can have a metering device), the injection voltage is 14-18kV, the propeller speed is 0.5-1mL / h, and the injection needle 3 The distance from the receiving device 6 is 20-30 cm, apply enough voltage bet...

Embodiment 2

[0038] Example 2 Preparation and adsorption performance experiment of functionalized styrene-methacrylic acid copolymer nanofiber adsorbent

[0039] Add styrene-methacrylic acid copolymer into an appropriate amount of N,N-dimethylformamide-tetrahydrofuran (4:6) mixed solvent to make the mass volume fraction 10%, stir until dissolved, then add an appropriate amount of Catechol violet, so that the mass volume fraction of catechol violet in the spinning solution reaches 0.4%, and after the catechol violet is dissolved, continue stirring for a period of time.

[0040] The functionalized styrene-methacrylic acid copolymer solution was spun into nanofibers using an electrospinning device. The electrospinning device is the same as in Example 1 to obtain nanofibers with diameters ranging from nanometers to submicrometers.

[0041] Weigh about 2.5 mg of nanofibers, activate with 2 mL of 70% methanol for 3 minutes, rinse with 3 mL of 10% methanol, put them into a centrifuge tube filled...

Embodiment 3

[0042] Example 3 Preparation and adsorption performance experiment of functionalized polystyrene-acrylic resin mixed nanofiber adsorbent

[0043] Add polystyrene and acrylic resin to an appropriate amount of N, N-dimethylformamide-tetrahydrofuran (4:6) mixed solvent, so that the mass volume fraction is 5%, stir until dissolved, and then add an appropriate amount of disulfide Hydrazone, so that the mass volume fraction of dithizone in the spinning solution reaches 0.3%, and after the dithizone is dissolved, continue stirring for a period of time.

[0044] The functionalized polystyrene-acrylic resin mixed solution was spun into nanofibers using an electrospinning device. The electrospinning device is the same as in Example 1 to obtain nanofibers with diameters ranging from nanometers to submicrometers.

[0045] Weigh about 2.5 mg of nanofibers, activate with 2 mL of 70% methanol for 3 minutes, rinse with 3 mL of 10% methanol, put them into a centrifuge tube filled with 1.5 mL ...

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Abstract

The invention discloses a functionalized nano-fiber heavy metal ion adsorbing material and a preparation method thereof. The invention is characterized in that the material is prepared by the following steps: (1) dissolving a polymer substrate and a functionalized reagent in an appropriate solvent to form a polymer solution with the functionalized reagent; and (2) preparing the polymer solution with the functionalized reagent prepared in the step (1) into the functionalized nano-fiber heavy metal ion adsorbing material by using the electrostatic spinning method. The fiber diameter of the functionalized nano-fiber heavy metal ion adsorbing material is 10-1000nm. The method is simple, convenient and safe; and the prepared fiber material has a nano-level diameter, has large specific area and strong adsorption property, can be used with a small usage amount, and is beneficial to being applied to a biological sample with a small sample amount.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution treatment, and in particular relates to a nanoscale heavy metal ion adsorption material and a preparation method thereof. Background technique [0002] The atmosphere, water body, soil and other environments that human beings rely on for survival are all polluted by heavy metals to varying degrees, and human health is greatly affected by it. Heavy metal pollution refers to environmental pollution caused by heavy metals or their compounds. It is mainly caused by human factors such as mining, exhaust gas discharge, sewage irrigation and use of heavy metal products. For example, Minamata disease and Itai-itai disease in Japan were caused by mercury pollution and cadmium pollution respectively. The degree of harm depends on the concentration and chemical form of heavy metals in the environment, food and organisms. Heavy metal pollution is mainly manifested in water pollution, and part...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30
Inventor 康学军邓剑军顾忠泽
Owner SOUTHEAST UNIV
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