Composite material of ionic liquid functionalized carbon nanotubes and preparation method of composite material

Abstract

The invention discloses a composite material of ionic liquid functionalized carbon nanotubes. Ionic liquid imidazolyl is cation; iodine ions, boron tetrafluoride, phosphorus hexafluoride and bis(trifluoromethanesulfonyl)imine are used as anions respectively; ionic liquid is directly connected onto surfaces of the carbon nanotubes through a covalent bond and no other atoms are used for connecting the ionic liquid and the carbon nanotubes. The invention further discloses a preparation method of the composite material; amino functionalized carbon nanotubes, formaldehyde, glyoxal and ammonium acetate are mixed in methanol to react. Then iodomethane is added into a product to finally obtain methylimidazole iodine salt functionalized carbon nanotubes. Then other ionic liquid functionalized carbon nanotubes are obtained through anion exchange. The composite material disclosed by the invention is used as a hydrogen evolution catalyst and is applied to electrolytic water; the ionic liquid modified carbon nanotubes have excellent hydrogen evolution catalytic activity and ionic liquid also can have the effect of a bonding agent.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotube composite materials, in particular to an ionic liquid functionalized carbon nanotube composite material, and more specifically to a preparation method of an ionic liquid functionalized carbon nanotube material and its application as a hydrogen evolution catalyst. Background technique [0002] At present, the energy crisis and environmental pollution problems faced by the whole world have become increasingly severe, threatening the survival and development of human beings; at the same time, non-renewable energy sources such as coal, natural gas and oil are nearly exhausted, and the pollution produced by such energy sources very serious. Therefore, the development of renewable energy and the path of sustainable development have become the focus of research by scholars from all over the world. Among all kinds of new renewable energy, solar energy and wind energy are easily affected by enviro...

AI Technical Summary

Problems solved by technology

Compared with precious metals such as Pt, this type of electrode reduces the cost while maintaining a low overvoltage, but this type of electrode still uses "rare metals" such as Mo, and its synthesis process still consumes a lot of energy. and corrosion resistance are limited

Recently, conductive polymer materials (polyaniline, polypyrrole, polyaniline-polypyrrole) have been used as non-metallic electrocatalysts in the electrolysis of water to produce hydrogen, but they still require Pt sheets as supports and the catalytic performance has not been significantly improved; C 3 N 4 and C 60 (OH) 8 As a metal-free hydrogen evolution catalyst, it has good catalytic performance, but its synthesis conditions are complicated and the preparation cost is high

In addition, most of the above hydrogen evolution catalysts require expensive Nafion as a binder to be loaded on the electrode

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