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J Am Chem Soc. 2008 Apr 16;130(15):5018-9. doi: 10.1021/ja711023z. Epub 2008 Mar 25.

The electronic origin of the visible-light absorption properties of C-, N- and S-doped TiO2 nanomaterials.

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  • 1Center for Chemical Dynamics & Nanomaterials Research Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, USA.


The origin of the visible-light absorption of main-group element (C, N, S) doped TiO2 nanostructures is investigated via diffuse reflectance and valence band X-ray photoelectron spectroscopy. The synthesized C-, N-, and S-doped titania nanomaterials show an increased electron density of states above the valence band of TiO2, which explains the red-shifted light absorption of these potential photocatalysts and simultaneously suggests a lowered potential as photooxidants compared to Degussa P25 TiO2.

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