Preparation And Properties Of Carbon Nanotube-Containing Pellets

Carbon nanotubes with a huge surface area, porous graphite layer gap and super conductivity have become a hot research of composite materials. Although the traditional method of iron-carbon micro-electrolysis for treating industrial waste has certain advantages, because of the iron lumps and surface passivation and other factors limiting its further application, so the new iron-carbon composite material research has the important significance.The influences about different experimental conditions on the phase change and micro-structure of carbon nanotube-containing pellets that were prepared by catalytic cracking method in this experiment were obtained. And it was found that the growth of carbon nanotubes was top growth. The electrochemical corrosion on carbon nanotubecontaining pellets was studied, then the carbon nanotube-containing pellets were used to degrade the phenolic wastewater. Studies show that:Preparation temperature, acetone velocity, the rate of acetone volume and sponge quality had a larger impact on carbon nanotube-containing pellets micro-structure. When temperature is 700℃, acetone velocity is 2m L/min, acetone volume and sponge mass ratio is 3m L/g, the pipe length of the multi-walled carbon nanotubes is 1~5μm, the length of tube outer diameter is 60 nm, the length of an inner diameter is 20 nm, and wall graphite lamellar spacing is 0.33 nm. The carbon nanotubes had even distribution in the pellets.Carbon nanotube-containing pellets are obtained at preparation temperature is 700℃,the rate of acetone flow is 2m L/min, and the ratio of acetone volume and sponge mass is3 m L/g. It were prone to corrosion reaction and fast corrosion rate in mass concentration of 3% phenol solution.When the carbon nanotube-containing pellets treated phenol wastewater for 3h,good phenol removal was obtained, which the removal of phenol was 41% in simulated wastewater of pH 5.