▎ 摘　　要

NOVELTY - The purifier has light catalyze device (32) that is arranged inside casing (1). A centrifugal device (2) is positioned above catalyze device. The casing is provided with an air inlet (11) and an air outlet (12). The catalyze device is set with light source (31) and light catalyze thin film. The thin film comprises a three-dimensional graphene substrate layer, Titanium?dioxide nano thin film layer and nanometer silver layer. The substrate layer is positioned between base layer and nano thin film layer. The nano silver layer is located on nano thin film layer. USE - Air sterilization purifier. ADVANTAGE - The properties of three-dimensional graphene and the photocatalytic efficiency of Titanium dioxide nano thin film are enhanced. The formaldehyde in the air and other harmful gases are effectively purified by killing harmful bacteria in the air. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a light catalyze thin film preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of structure of air sterilization purifier. Casing (1) Centrifugal device (2) Air inlet (11) Air outlet (12) Light source (31) Light catalyze device (32)