Calcium manganese modifying magnetic carbon nanotube composite material, preparation method and application thereof

The invention belongs to the technical field of nano composite materials, and particularly relates to a calcium manganese modified magnetic carbon nanotube composite material, and a preparation methodand application thereof. The calcium manganese modified magnetic carbon nanotube composite material is characterized in that a supporting framework is a carbon nanotube, and magnetic ferric oxide, manganese dioxide and calcium carbonate are composited on the carbon nanotube. The preparation method comprises the following steps that 1, carbon nanotube suspension, divalent ferric salt and trivalentferric salt are mixed to react in water to obtain magnetic carbon nanotube power; 2, the powder is mixed with manganese chloride and potassium permanganate solution in water to make ultrasonic reaction, so that a manganese modified magnetic carbon nanotube is obtained; and 3, the manganese modified magnetic carbon nanotube and calcium chloride are mixed and react in water to obtain the compositematerial. The invention fur