Visible-light responsive nanoscaled nitrogen doped and co-doped titanium dioxide was synthesized using a sol-gel method. XPS spectra indicate that the nitrogen concentration is as high as 20%, even after sintering. The average size of the particles can be as small as 10 nm based on both the Scherrer calculation from the XRD results and measurements for particles in TEM images. There is no severe aggregation even for the particles calcined at higher temperatures although no protective surface ligand was used. Most particles show anatase XRD patterns with some amorphous phase. The photocatalytic performances were evaluated using photocatalytic decomposition of organic dyes. The latest progress on nanoscaled doped titania with high nitrogen content will be presented.

Synthesis and characterization of nanoscaled doped titanium dioxide with high nitrogen concentration for visible light catalysis

244th National Meeting (2012)

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