Undoped visible-light-sensitive titania photocatalyst
作者： Tetsuya Kako , Naoto Umezawa , Kui Xie , Jinhua Ye
DOI: 10.1007/S10853-012-6888-Y
关键词:
摘要: Colorful rutile TiO2 was prepared by heating Ti2O3 at 550–900 °C to develop novel visible-light-sensitive and eco-friendly photocatalysts for environmental remediation under visible-light irradiation. The colors of the samples, which ranged from grayish green yellowish off-white via yellow differed reported reduced TiO2, such as blue black. in this study characterized X-ray diffraction, Raman spectroscopy, photoelectron UV–Visible spectroscopy. These measurements showed that contained Ti3+-interstitial sites. sensitive visible light, calculation band diagram demonstrated absorption is caused mainly formation sites TiO2. Among 700 °C shows highest photocatalytic activity In addition, sample further mildly ground using a bead-milling machine. possessed higher surface area better activity.
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