Preparation and photocatalytic activity of nanocrystalline TiO2 with uniform shape and size

✍ Scribed by Milin Zhang; Jiang Wang; Honggang Fu

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 784 KB
• Volume: 199
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/j.jmatprotec.2007.08.037

✦ Synopsis

A novel and facile synthetic route was proposed to synthesize the uniform nanocrystalline TiO 2 (nc-TiO 2 ) through an evaporation-induced assembly (EIA) approach, utilizing the block copolymer as the uniform-structure-directing agent. Furthermore, a systematic study on the effect of calcination temperature on the photocatalytic activity of rhodamine TiO 2 was also presented in this paper. Thermogravimetric analysis/different scanning calorimetry, X-ray diffraction, transmission electron microscopy, nitrogen sorption and UV-vis absorption spectroscopy were used to characterize the obtained nc-TiO 2 samples. The results showed that an optimum calcination temperature of photocatalytic activity of nanocrystalline TiO 2 catalyst was 500 • C. In addition, the as-prepared nc-TiO 2 materials show higher photocatalytic activity compared with the conventional TiO 2 (P25 Degussa).