Chapter 19

Nanostructured Visible-Light Photocatalysts for Water Purification

Qi Li1, Pinggui Wu2 and Jian Ku Shang1,    1Center of Advanced Materials for Purification of Water with Systems, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA,    2Superior Graphite Company, Chicago, IL, USA

Titanium oxide (TiO,) photocatalysts have been widely studied for both solar energy conversion and environmental applications in the past several decades because of their high chemical stability, good photoactivity, relatively low cost, and nontoxicity. However, the photocatalytic capability of TiO, is limited to only ultraviolet light (wavelength, A,<400 nm), seriously limiting its solar efficiency. ...

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