| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing simply and in a short time a silica nanotube associated product which is produced by highly integrating silica nanotubes having small outer diameters and excellent in monodispersity. <P>SOLUTION: The method for producing the silica nanotube associated product comprises: a step (I) of hydrolyzing polyoxazoline in an acidic condition to obtain a polyethylene imine hydrochloride powder; a step (II) of dissolving the hydrochloride powder obtained in the step (I) in water to obtain an aqueous solution of polyethylene imine hydrochloride; a step (III) of adding a basic compound to the aqueous solution obtained in the step (II) to obtain a crystalline filament associated product of polyethylene imine; a step (IV) of separating the crystalline filament associated product of polyethylene imine obtained in the step (III); a step (V) of dispersing the crystalline filament associated product of polyethylene imine separated in the step (IV) in an aqueous medium and adding a silica source to obtain a composite nanofiber associated product composed of a polyethylene imine core and silica covering the core; and a step (VI) of heating and firing the composite nanofiber associated product obtained in the step (V) to remove the inner polyethylene imine core and developing a hollow structure. <P>COPYRIGHT: (C)2012,JPO&INPIT |
