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- 저자 : Jing-Hua Tzeng (검색결과 1 건)
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Jing-Hua Tzeng,Chih-Huang Weng,Yu-Hao Lin,Shang-Ming Huang,Li-Ting Yen,Jin Anotai,Yao-Tung Lin 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-
A novel visible light driven tourmaline-nitrogen-doped-TiO2 composite (S-N-TiO2) was prepared using afacile impregnation and sol gel method and its photocatalytic reaction scheme with ethylene wasproposed. X-ray diffraction analysis confirmed the presence of TiO2 in the form of anatase phase. Scanning electron microscope and energy dispersive spectrometer mapping showed that the TiO2particles were deposited and dispersed on the surface of tourmaline. Under visible light irradiation, the SN-TiO2 catalyst containing 4 wt.% tourmaline has higher photocatalytic activity for the oxidation ofethylene than pure TiO2 and N-doped-TiO2 (N-TiO2). This enhanced activity could be not only attributedto the narrowed band gap in visible light driven N-TiO2, but also improved by the spontaneous electricfield of tourmaline which was applied to restrain the recombination of the electron–hole pairs. Thephotogenerated electrons from N-TiO2 were induced by electricfield to react with ethylene, and theleaving photogenerated holes also formed the reactive species. The photocatalytic activity of S-N-TiO2 ismuch affected by synthesis conditions. This novel S-N-TiO2 photocatalyst has a promising perspective inthe gas treatment for air pollution control and horticultural product industries.
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