Patent ID: 7327087

Claim:
A photocatalytic fluorescent lamp capable of cleaning air and increasing brightness, comprising: a lamp tube comprising an anatase TiO 2 coating film, wherein the anatase TiO 2 coating film contains semiconductor nano-crystalline anatase TiO 2 sol doped with rare earth metal; wherein, when said photocatalytic fluorescent lamp is turned on, brightness of said photocatalytic fluorescent lamp increases because of a fluorescent property of said anatase TiO 2 coating film, and due to a porous characteristic of said anatase TiO 2 coating film and a visible light photocatalytic ability thereof, a small amount of UV light (UVA) and blue light transmitted from said photocatalytic fluorescent lamp is absorbed by said anatase TiO 2 coating film and active species that are capable of purifying air are generated.