title: An undoped, single-phase oxide photocatalyst working under visible light.
abstract: A novel photocatalyst, PbBi2Nb2O9 has been discovered that shows high activities for degradation of organic pollutants, generation of photocurrent, and water decomposition into O2 or H2, all under visible right irradiation (lambda >/= 420 nm). This is the first example of an undoped, single-phase oxide photocatalyst that shows such reactivity. Its quantum yields are much higher than those for most of the previously reported materials, especially in water decomposition to generate oxygen (29%). Since it is an oxide, there is much less concern for stability under light irradiation.
authors.affiliation: Department of Chemical Engineering and School of Environmental Science & Engineering, Pohang University of Science and Technology, San 31 Hyoja-dong, Pohang 790-784, Republic of Korea.
authors.forename: Hyun Gyu
authors.initials: HG
authors.lastname: Kim
authors.forename: Dong Won
authors.initials: DW
authors.lastname: Hwang
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Lee