| abstract |
Disclosed is a method for loading a nano-sized metal oxide by an anodic oxidation method, comprising the following steps: 1) adding an electrolyte into a reaction cell, and fixing a cathode and an anode relative to each other, the anode using an elemental metal material for the nano-sized metal oxide, and the cathode using a support metal material; 2) stirring the electrolyte at an even speed using a magnetic stirrer, with the rotation speed being no lower than 500 rpm; and 3) powering on the reaction cell to apply a voltage of 10-50 V. Upon powering on, the elemental metal material of the anode undergoes an anodic oxidation reaction, generating metal oxide nano-tubes and nano-particles on a surface of the anode. As oxidation proceeds, the metal oxide nano-tubes and nano-particles on the surface of the anode detach from the surface and dissolve into the electrolyte by means of stirring. The detached and dissolved nano-sized fragments move towards the cathode under the action of an electric force and become attached to a surface of the cathode material, forming a metal oxide nanofilm. The method has the advantages of mild conditions, simple equipment, convenient operation, low cost, and a good loading effect. The resulting metal oxide will not detach easily. |