]>Visible-Light-Active Titania Photocatalysts: The Case of N-Doped <mml:math id="E1" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mtext>TiO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>s—Properties and Some Fundamental Issues : Figure 2
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Figure 2: X-ray photoelectron spectra of various T i O 2 specimens; N -Degussa is nitrided P25 T i O 2 and TiO2-xNx N P denotes TiO2-xNx nanoparticles. Reproduced with permission from [21]. Copyright (2004) American Chemical Society.