A thermal method of forming ferric oxide nano/microparticles with predominant morphology is described using different solvents. Methods of using the Fe.sub.3O.sub.4 nano/microparticles as catalysts in the reduction of nitro compounds with sodium borohydride to the corresponding amines and decomposition of ammonium salts.

A thermal method of forming ferric oxide nano/microparticles with predominant morphology is described using different solvents. Methods of using the Fe.sub.3O.sub.4 nano/microparticles as catalysts in the reduction of nitro compounds with sodium borohydride to the corresponding amines and decomposition of ammonium salts.

A method of preparing iron oxide nanoparticles using an herbal mixture comprising Capparis spinosa, Cichorium intybus, Solanum nigrum, Cassia occidentalis, Terminalia arjuna, Achillea millefolium, and Tamarix gallica. The method produces crystalline γ-Fe.sub.2O.sub.3 nanoparticles which are superparamagnetic. The iron oxide nanoparticles are used in a method of killing or inhibiting the growth of a bacteria and/or fungus, particularly in the form of a biofilm. The nanoparticles are also used in a method of treating colon cancer.

A method of preparing iron oxide nanoparticles using an herbal mixture comprising Capparis spinosa, Cichorium intybus, Solanum nigrum, Cassia occidentalis, Terminalia arjuna, Achillea millefolium, and Tamarix gallica. The method produces crystalline γ-Fe.sub.2O.sub.3 nanoparticles which are superparamagnetic. The iron oxide nanoparticles are used in a method of killing or inhibiting the growth of a bacteria and/or fungus, particularly in the form of a biofilm. The nanoparticles are also used in a method of treating colon cancer.

A dispersed iron oxide magnetic powder slurry, in which the average secondary particle diameter of ε-type iron oxide measured with a dynamic light scattering particle size distribution analyzer is 65 nm or less, and which has good dispersibility, is obtained by adding a quaternary ammonium salt serving as a first dispersant and an alkali to a slurry containing ε-type iron oxide particles to bring the pH at 25° C. to 11 or higher, and thereafter adding an organic compound, which is an organic acid serving as a second dispersant and having two or more carboxy groups in the molecule, and in which one type or two types of a hydroxy group and an amino group are bound to carbon that does not constitute a carboxy group other than the carboxy groups to bring the pH at 25° C. of the slurry to 4 or higher and lower than 11.

The present invention discloses a graphene/porous iron oxide nanorod composite and a method for preparing the same. The composite includes graphene and Fe.sub.2O.sub.3 nanoparticles loaded on the graphene. The Fe.sub.2O.sub.3 nanoparticles have a honeycomb porous structure. The synthesis method of the composite is simple and the raw materials are inexpensive.

The present invention discloses a graphene/porous iron oxide nanorod composite and a method for preparing the same. The composite includes graphene and Fe.sub.2O.sub.3 nanoparticles loaded on the graphene. The Fe.sub.2O.sub.3 nanoparticles have a honeycomb porous structure. The synthesis method of the composite is simple and the raw materials are inexpensive.

There are provided an oriented body such as a magnetic sheet in which a value of degree of orientation of magnetic particles is beyond 3.5, and a method for producing the same, and a device for producing the same, wherein the oriented body such as a magnetic sheet is produced through the steps of: mixing a mixed solution containing a solvent and a vehicle and ε-iron oxide particles by shaking stirring, and dispersing the ε-iron oxide particles in the mixed solution; providing a mixed solution in which the ε-iron oxide particles are dispersed, on a predetermined substrate; and removing the solvent while applying a magnetic field to the substrate provided with the mixed solution, to obtain an oriented body.

An object is to provide a plate shaped ferrite particle for a pigment, having both of electromagnetic wave shielding ability and designability, a resin molded material containing the plate shaped ferrite particle a pigment, and an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material. To achieve the object, the plate shaped ferrite particles for a pigment having a metallic luster, a resin molded material containing the plate shaped ferrite particles for a pigment, an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material are employed.

An object is to provide a plate shaped ferrite particle for a pigment, having both of electromagnetic wave shielding ability and designability, a resin molded material containing the plate shaped ferrite particle a pigment, and an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material. To achieve the object, the plate shaped ferrite particles for a pigment having a metallic luster, a resin molded material containing the plate shaped ferrite particles for a pigment, an electromagnetic wave shield housing for storing an electronic circuit manufactured by using the resin molded material are employed.