Preparation method of nanosilver composite carbon nanotubes

Abstract

The invention belongs to the technical field of advanced materials and relates to a preparation method of nanosilver composite carbon nanotubes, which includes the steps of mixing carbon nanotubes anda silver salt solution to obtain composite slurry, drying and compacting; connecting the compacted carbon nanotubes and silver salt to a pair of graphite electrodes, and vacuumizing; introducing pulse current under vacuum conditions; heating and compacting the carbon nanotubes and silver salt until the silver salt is pyrolyzed, so that nano silver particles are formed on the surface of the carbonnanotubes; introducing an inert gas to purge impurities, and lowering the temperature to prepare the nanosilver composite carbon nanotubes. The carbon nanotubes have good heat conductivity and chemical stability; the carbon nanotube and silver salt mixture is efficiently heated through pulse current; heat transfer media and outside heat transfer are not required; the silver salt on the surface ofthe carbon nanotubes can be quickly pyrolyzed into fine silver particles; therefore, the nanosilver composite carbon nanotubes are prepared quickly.

Description

technical field [0001] The invention relates to a technology in the field of advanced materials, in particular to a method for preparing nano-silver composite carbon nanotubes. Background technique [0002] Nano-silver composite carbon nanotube material combines the synergistic advantages of nano-silver and carbon nanotubes. It has small size effect, quantum size effect, surface effect and macroscopic quantum tunneling effect. It integrates antibacterial, catalysis, electrical conductivity, and thermal conductivity. Broad application prospects. Electroless plating is a common method for preparing nano-silver composite carbon nanotube materials, but this method requires pretreatment of carbon nanotubes by oxidation, sensitization, and activation processes to improve the activation ability of carbon nanotubes. It also needs to adjust the composition of the plating solution, Temperature, pH value, the process is complicated and time-consuming, the cost of wastewater pollution ...

AI Technical Summary

Problems solved by technology

Electroless plating is a common method for preparing nano-silver composite carbon nanotube materials, but this method requires pretreatment of carbon nanotubes by oxidation, sensitization, and activation processes to improve the activation ability of carbon nanotubes. It also needs to adjust the composition of the plating solution, Temperature, pH value, complex and time-consuming process, high cost of wastewater pollution treatment, difficult product quality control

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