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Multi-walled carbon nanotube functionalized graphene composites and their applications

A technology of multi-walled carbon nanotubes and composite materials is applied to multi-walled carbon nanotube functionalized graphene composite materials. The application field of the composite material achieves the effects of compensating for reduced electrical conductivity, increasing specific surface area, and reducing detection costs.

Active Publication Date: 2016-08-24
甘肃中商食品质量检验检测有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, carbon nanotubes and graphene composites exhibit more excellent thermal conductivity and electron transport properties, although the composites have these advantages in some fields, improving their biocompatibility, stability, dispersibility and catalytic Activity remains a challenge

Method used

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  • Multi-walled carbon nanotube functionalized graphene composites and their applications
  • Multi-walled carbon nanotube functionalized graphene composites and their applications
  • Multi-walled carbon nanotube functionalized graphene composites and their applications

Examples

Experimental program
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Effect test

Embodiment 1

[0045] According to the ratio of adding 50 mg multi-walled carbon nanotubes to 100 mL double-distilled water, add multi-walled carbon nanotubes into double-distilled water for 30 minutes to prepare a multi-walled carbon nanotube dispersion; according to the volume ratio of 3:1, take Concentrated sulfuric acid and nitric acid were prepared into mixed acid; according to the volume ratio of 5:2, the multi-walled carbon nanotube dispersion and mixed acid were taken respectively, mixed evenly, refluxed at 65°C for 6h, centrifuged, washed with twice distilled water for three times, 40°C vacuum drying to obtain purified multi-walled carbon nanotubes; according to the ratio of adding 4g graphite powder, 2g sodium nitrate, 9mL secondary distilled water and 12g potassium permanganate to 100mL concentrated sulfuric acid, take concentrated sulfuric acid, graphite powder, sodium nitrate, di sub-distilled water and potassium permanganate; add graphite powder into concentrated sulfuric acid, ...

Embodiment 2

[0047] According to the ratio of adding 50 mg multi-walled carbon nanotubes to 100 mL double-distilled water, add multi-walled carbon nanotubes into double-distilled water, and ultrasonically for 30 minutes to prepare a multi-walled carbon nanotube dispersion; according to the volume ratio of 3:1, respectively Take concentrated sulfuric acid and nitric acid to prepare mixed acid; according to the volume ratio of 5:2, take the multi-walled carbon nanotube dispersion and mixed acid respectively, mix evenly, reflux at 75°C for 6 hours, centrifuge, wash the solid matter with twice distilled water three times, 40 ℃ vacuum drying to obtain purified multi-walled carbon nanotubes; according to the ratio of adding 5g graphite powder, 2.5g sodium nitrate, 92mL double distilled water and 20g potassium permanganate to 100mL concentrated sulfuric acid, take concentrated sulfuric acid, graphite powder and sodium nitrate respectively , twice distilled water and potassium permanganate; add gra...

Embodiment 3

[0049] According to the ratio of adding 50 mg multi-walled carbon nanotubes to 100 mL double-distilled water, add multi-walled carbon nanotubes into double-distilled water, and ultrasonically for 30 minutes to prepare a multi-walled carbon nanotube dispersion; according to the volume ratio of 3:1, respectively Take concentrated sulfuric acid and nitric acid to prepare a mixed acid; according to the volume ratio of 5:2, take the multi-walled carbon nanotube dispersion and the mixed acid respectively, mix them evenly, reflux at 70°C for 6 hours, centrifuge, wash the solid matter with twice distilled water three times, 40 ℃ vacuum drying to obtain purified multi-walled carbon nanotubes; according to the ratio of adding 4.5g graphite powder, 2.25g sodium nitrate, 92mL double distilled water and 15.75g potassium permanganate to 100 mL concentrated sulfuric acid, take concentrated sulfuric acid and graphite powder respectively , sodium nitrate, twice distilled water and potassium per...

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Abstract

The invention provides a multi-walled carbon nanotube functionalized graphene composite material and its application, preparing multi-walled carbon nanotube dispersion liquid and mixed acid, reflux and centrifugal drying to obtain purified multi-walled carbon nanotubes; using graphite powder and sodium nitrate , secondary distilled water and potassium permanganate to obtain graphene oxide; to prepare graphene oxide dispersion, adjust the pH value, add hydrazine hydrate and ammonia water to obtain reduced graphene oxide; to prepare reduced graphene oxide dispersion, add 1,3 , 6,8-pyrene tetrasulfonate sodium solution to obtain functionalized graphene; prepare graphene suspension, mix 1,3,6,8-pyrene tetrasulfonate sodium solution to form a reaction solution; add purified multi-walled carbon nanotubes The dispersion liquid is stirred, centrifuged, washed, and vacuum-dried to prepare a multi-walled carbon nanotube functionalized graphene composite material. The composite nanomaterial is used as an adsorbent in the detection of β2 receptor agonists in fresh meat and products, which greatly shortens the pre-detection processing time and reduces the detection cost.

Description

technical field [0001] The invention belongs to the field of carbon nanometer materials, and relates to a multi-walled carbon nanotube functionalized graphene composite material; the invention also relates to an application of the composite material. Background technique [0002] Some new carbon nanomaterials, such as one-dimensional carbon nanotubes with superior thermal conductivity, electrical conductivity and strong mechanical properties and two-dimensional graphene composites, have been applied to nanoelectronics, nanochemistry, catalysis, biological Sensors, environmental monitoring, medicine and many other fields. aroused widespread concern. The high hydrophobicity of the surface of carbon nanomaterials makes it highly adsorbable to some hydrophobic organic pollutants, especially compounds with π electrons can interact with some carbon nanomaterials through π-π interactions. Therefore, carbon nanomaterials may Very suitable for the treatment of organic pollutants. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20G01N27/26
CPCB01J20/205G01N27/26
Inventor 钱滢文洪霞袁彩霞周鑫魁何海宁冯玉升王懂帅高志莹李蕊岑汪永松杨震刘琦熊敏晖尚欣春王燕姣张志龙
Owner 甘肃中商食品质量检验检测有限公司
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