▎ 摘　　要

NOVELTY - This utility model claims a portable air purifier, comprising a shell, a power supply and a purification device, a power supply device and a purification positoin inner shell, between the power supply device and purification device equipped with a clapboard, the power supply device through lead. purification device, the purification device comprises purification chamber, a device and light catalyzing device, the inner device and a light catalytic device the purification cavity; the light catalytic device comprises light source and light catalytic film, the light source the light catalytic film of upper of the light catalytic film comprises, three-dimensional graphene, TiO2 nano thin film layer and nano-silver layer, the three-dimensional graphene layer substrate layer and TiO2 nano thin film middle layer, a the nano-silver layer is TiO2 nano thin film layer. This device uses characteristics of three-dimensional graphene, enhances TiO2 nano thin film layer is light catalytic efficiency and effectively sterilizes and purifies air.