An Undoped, Single-Phase Oxide Photocatalyst Working under Visible Light

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 (λ ≥ 420 nm). This is the first example of an undoped, single-phase oxide pho...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2004-07, Vol.126 (29), p.8912-8913
Main Authors: Kim, Hyun Gyu, Hwang, Dong Won, Lee, Jae Sung
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
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Summary: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 (λ ≥ 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.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja049676a