수열합성법을 이용한 전이금속 도핑 TiO2 합성 및 광분해 효율
Synthesis of Metal Ion doped TiO2 Photocatalyst by Hydrothermal Treatment and Photocatalytic Degradation
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Metal (Ag, Ce, Fe, V, Zr and Zn) doped TiO2 nanoparticles were fabricated by a sol–gel methodand an alkali hydrothermal synthesis. The mole ratio of TTIP, IPA, and distilled water were adjusted while the doped TiO2 powders were treatedat 170℃-200℃ for 8 hours via the hydrothermal synthesis. The synthesized Metal doped TiO2 nanoparticles were thoroughly characterized by X-ray diffraction,transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy inorder to determine their morphology, structural and electronic properties. Theas-prepared catalysts were evaluated in the photo decomposition of methylene blue under UV light. The photodegradation efficiency of the doped TiO2 with Fe ions and Ag ions was the best among thesamples. And the sharp decrease of the efficiency was identified as the concentration went above acertain level. It was found that the photodegradation efficiency of TiO2 which contained some rutile-type was a littlehigher than pure anatase-type and the photodegradation efficiency decreased when the ratio ofanatase-rutile was 8:2.
Abstract
Metal (Ag, Ce, Fe, V, Zr and Zn) doped TiO2 nanoparticles were fabricated by a sol–gel methodand an alkali hydrothermal synthesis. The mole ratio of TTIP, IPA, and distilled water were adjusted while the doped TiO2 powders were treatedat 170℃-200℃ for 8 hours via the hydrothermal synthesis. The synthesized Metal doped TiO2 nanoparticles were thoroughly characterized by X-ray diffraction,transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy inorder to determine their morphology, structural and electronic properties. Theas-prepared catalysts were evaluated in the photo decomposition of methylene blue under UV light. The photodegradation efficiency of the doped TiO2 with Fe ions and Ag ions was the best among thesamples. And the sharp decrease of the efficiency was identified as the concentration went above acertain level. It was found that the photodegradation efficiency of TiO2 which contained some rutile-type was a littlehigher than pure anatase-type and the photodegradation efficiency decreased when the ratio ofanatase-rutile was 8:2.
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