Self-assembly controllable preparation method of composite of metal nano particles and carbon materials

Abstract

The invention discloses a self-assembly controllable preparation method of a composite of metal nano particles and carbon materials. The self-assembly controllable preparation method comprises the steps that carbon material nano carriers are firstly and fully scattered into an ionic liquid solution through ultrasound, and turbid liquid of the carbon material carriers and the ionic liquid is obtained; then the turbid liquid is transferred into a container, various different metal targets are sputtered into the turbid liquid through using a magnetic control sputtering method, and a mixed solution of the ionic liquid, the carbon materials and the metal nano particles is obtained for the time being; and finally, the ionic liquid is washed clean through adopting a high speed centrifugation method and utilizing an organic solvent of acetone, absolute ethyl alcohol or the like, and the nano composite of the metal nano particles and the carbon material carriers formed through self-assembly can be obtained. By using the self-assembly controllable preparation method, various high-quality composites formed by the metal nano particles and the carbon materials can be prepared through a self-assembly process, the size of the metal nano particles can be controlled through selecting different ionic liquid, and the density of the metal nano particles can be controlled through changing a sputtering condition (see the last paragraph of texts and the last picture). The controllability of the self-assembly controllable preparation method is good, extra reducing agents does not need to be added, and no by-product is produced.

Description

[0001] technical field [0002] The invention relates to the field of nanometer materials, in particular to a method for preparing a composite of metal nanoparticles and carbon materials. Background technique [0003] Carbon materials (including one-dimensional carbon nanotubes, two-dimensional structures, such as graphene, graphene oxide, and reduced graphene oxide), due to their high surface area, various electrochemical properties from insulators to semiconductors to conductors, and have With good chemical and electrochemical stability, it is used as an excellent carrier for nanocomposites. And metal nanoparticles, taking gold as an example, have unique electrical, magnetic, optical and catalytic activities, and have high research value in chemistry, physics, material chemistry and biomedicine. [0004] Since both have extremely high research value, the nanocomposite formed by organically combining the two as a new composite material not only combines the special propert...

AI Technical Summary

Problems solved by technology

However, the traditional methods have some limitations, such as high preparation cost, complex synthesis process, difficult to remove impurities, difficult to have both particle size and activity, etc.

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