新穎材料農業：友善環境農業新穎材料研發與安全評估【土環系林耀東特聘教授】
論文篇名 英文：Synthesis, characterization, and visible light induced photoactivity of tourmaline-N-TiO2 composite for photooxidation of ethylene
中文：合成及鑑定可見光感應型tourmaline-N二氧化鈦應用於乙烯光催化降解
期刊名稱 Journal of Industrial and Engineering Chemistry
發表年份,卷數,起迄頁數 2019, 80, 376-384
作者 Jing-Hua Tzeng, Chih-Huang Weng, Yu-Hao Lin, Shang-Ming Huang, Li-Ting Yen, Jin Anotai, Yao-Tung Lin*
DOI 10.1016/j.jiec.2019.08.017
中文摘要 本研究利用一種簡便的浸漬(impregnation)和溶膠凝膠法(sol gel method)製備一種新型的可見光催化之電氣石(Tourmaline)-氮摻雜-TiO2複合材料(S-N-TiO2)，並將材料應用於氣相乙烯移除。 X射線衍射分析(XRD)證實了銳鈦礦相形態TiO2的存在。掃描電子顯微鏡(SEM)和能量色散譜儀(EDS)證明TiO2顆粒沉積並分散在電氣石表面。在可見光照射下，含有4 wt% 電氣石的S-N-TiO2催化劑對乙烯的氧化能力高於純TiO2及氮摻雜的TiO2 (N-TiO2)。此氧化能力不僅可以歸因於可見光驅動N-TiO2的窄帶隙(narrow band gap)，而且輔以電氣石的自發電場加以抑制電子電洞對的結合。N-TiO2產生的光生電子在電場作用下與乙烯反應，留下光生電洞也形成了反應性物種。 S-N-TiO2光催化能力受合成條件影響很大。新型S-N-TiO2光催化劑在用於空氣污染控制和園藝產品行業的氣體處理中具有廣闊的前景。
英文摘要 A novel visible light driven tourmaline-nitrogen-doped-TiO2 composite (S-N-TiO2) was prepared using a facile impregnation and sol gel method and its photocatalytic reaction scheme with ethylene was proposed. 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 TiO2 particles were deposited and dispersed on the surface of tourmaline. Under visible light irradiation, the S-N-TiO2 catalyst containing 4 wt.% tourmaline has higher photocatalytic activity for the oxidation of ethylene than pure TiO2 and N-doped-TiO2 (N-TiO2). This enhanced activity could be not only attributed to the narrowed band gap in visible light driven N-TiO2, but also improved by the spontaneous electric field of tourmaline which was applied to restrain the recombination of the electron–hole pairs. The photogenerated electrons from N-TiO2 were induced by electric field to react with ethylene, and the leaving photogenerated holes also formed the reactive species. The photocatalytic activity of S-N-TiO2 is much affected by synthesis conditions. This novel S-N-TiO2 photocatalyst has a promising perspective in the gas treatment for air pollution control and horticultural product industries.