Patent ID: 7713660

Claim:
A method for manufacturing manganese oxide nanotubes, the method comprising: vacuum-filtering a manganese oxide precursor through an anodic aluminum oxide (hereinafter “AAO”) template inserted between a vacuum unit and a storage unit to prepare a manganese oxide precursor-adsorbed AAO template; oxidizing by heating and drying the manganese oxide precursor-adsorbed AAO template to prepare an oxidized manganese oxide-adsorbed AAO template; dissolving by immersing the oxidized manganese oxide-adsorbed AAO template in an aqueous NaOH or KOH solution to dissolve only the AAO template to dissolve the AAO template while manganese oxide nanotubes remain as solid; filtering by separating the manganese oxide nanotubes the AAO-dissolved solution; drying the manganese oxide nanotubes separated the AAO-dissolved solution to prepare dried manganese oxide nanotubes; and calcining the dried manganese oxide nanotubes.