Visible-light-driven N-doped TiO2 was prepared by a simple sol–gel process using nitric acid not only as the acid catalyst of the sol–gel reaction but also as the source of nitrogen. The photocatalytic performance of the N-doped TiO2 was investigated by using FTIR spectroscopy to monitor the degradation of trichloroethylene (TCE) during UV and visible irradiation. The photocatalytic degradation of TCE was well-reproduced several times. The activity of Ti–O–N species was supported experimentally. The N-doped TiO2 was found to be responsive to visible light and was stable during repeated runs and maintained the nitrogen species and its activity for at least four months.
Research on Chemical Intermediates – Springer Journals
Published: Jan 20, 2009
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