Catalysts functionalized metal oxide nanotubes via electrospinning and etching process fabrication method for preparing the same and gas sensor comprising the same

摘要

Disclosed are metal oxide nanotubes having a catalyst functionalized from electrospinning and etching processes, a preparation method of the metal oxide nanotubes, and a gas sensor using the metal oxide nanotubes. Metal oxide nanotubes prepared by an electrospinning method may have a porous nanotube structure formed accordingly by performing an etching process on a composite one-dimensional nanofiber including two or more metal oxides, thereby removing a specific metal oxide from the two or more metal oxides. Thereafter, metal oxide porous nanotubes to which a catalyst having an opened structure by functionalizing the catalyst is bonded are formed. The porous nanotubes formed by the etching process may include mesopores between shells. Therefore, the porous nanotubes can have high sensitivity by having a high surface area and the opened structure, thereby enabling an effective surface gas reaction and smooth gas penetration and diffusion. Further, the porous nanotubes can be applied to a sensor having higher sensitivity and selectivity for sensing harmful environmental gases and analyzing exhalation by bonding the catalyst to the porous nanotubes.