Composite material by using carbon nano-tube as core and ferriferrous oxide as shell and preparation method thereof

• Main Authors: MA CHUANGUO, LU JIANGRONG, WANG YAZHEN, ZHOU HUANCHAO, DAI PEIBANG
• Format: Patent
• Language: English
• Published: 16.12.2015
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a composite material by using a carbon nano-tube as a core and ferriferrous oxide as a shell and a preparation method thereof. The composite material is characterized in that a Fenton reagent comprising FeCl2/H2O2, reductant iron powder, a carbon nano-tube and precipitant urea or hexamethylenetetramine are used as raw materials. The preparation method comprises the following steps of, firstly, performing surface hydroxylation modification on the carbon nano-tube with the Fenton reagent; then, adding a proper amount of the iron powder to regulate the concentration of Fe<2+> ions, further precipitating the iron ions with urea or hexamethylenetetramine by adopting a homogeneous precipitation method under a proper condition; and finally, conducting separating, washing, drying and other processes on the precipitate to obtain a final product. The carbon nano-tube/ferriferrous oxide composite material with a 'core-shell' structure is characterized by having a special structure by using the carbon nano-tube as the core and the ferriferrous oxide as the shell; and ferriferrous oxide having a continuous thin-layer structure uniformly covers the outer surface of the carbon nano-tube, and the interface between the core and the shell is weak. The preparation method is simple in process, and the product has a wide application prospect in chemical catalysis, sensors, new energy materials, electromagnetic shielding materials, high-performance polymer-based composite materials and other fields.