| 초록 |
TiO2 nanoparticles were synthesized by the hydrolysis and condensation of TiCl4, an economic titanium precursor, in a mixed solvent of iso-propyl alcohol and water. As-prepared powders were characterized by XRD, FT-IR, FE-SEM, EF-TEM etc. Methylene blue (MB) is representative of a class of dyes resistant to biodegradation. To examine the photocatalytic activity of the as-prepared TiO2, the photodegradation of MB has been investigated in aqueous heterogeneous suspensions. The results showed that the photocatalytic activity of TiO2 powders prepared in the mixed solutions had a volume ratio of iso-PrOH/H2O exceeding that of ST-01, and ST-21. Diffuse reflectance spectra of TiO2 and photocatalytic activity were found to correlate. |
