Nanomaterials Structure and Phase Control

Nano-metallurgy is a new technology that simultaneously controls the structure and phase of nanomaterials by using the gas phase reaction rather than the liquid phase reaction, overcoming the manufacturing method of nanomaterials, which was limited in conventional the liquid phase reaction. Conventionally, in the field of catalysts requiring a sophisticated structure and phase, it has been difficult to mass-produce a material. However, this technology can solve the problems in the process.

The introduction of metallurgical theory into nanotechnology and the control of structures and images require systematic research. Our research group led the selective redox reaction of the metal compound / carbon composite material based on the Ellingham diagram for the first time in the world and succeeded in controlling the structure and phase simultaneously. Through this, our group presented the concept of nanomaterials and led the related research.

For example, we have proposed a method to control the oxidation and reduction reactions of metal ions and carbon through calcination with controlled oxygen partial pressure, and to control the secondary structure of metal and carbon for the first time. This method is based on a selective oxidation process in which the metal is reduced and the carbon is oxidized. The control of the oxygen partial pressure makes it possible to control the degree of oxidation of the carbon and to form various secondary structures.