Yellow-colored N-containing TiO2 (NTO) powders with a porous surface were synthesized by spray pyrolysis. Their nitrogen contents depended on pyrolysis temperature and ranged from 300 to 5700 ppm. Ultraviolet-visible spectra indicated that the NTO powders could absorb not only ultraviolet light like pure TiO2 powder, but also part of the visible light spectrum (λ < 550 nm). Acetaldehyde decomposition was used as a probe reaction to evaluate the photocatalysis of these sprayed powders. The photocatalytic activity of the sprayed NTO powder was superior to that of a pure TiO2 sample under visible light irradiation.
Research on Chemical Intermediates – Springer Journals
Published: Jun 1, 2005
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