(山東理工大學(xué) 材料科學(xué)與工程學(xué)院，淄博255049)
摘 要: 以多孔陶粒為載體，采用低溫水熱−模板劑法制備復(fù)合摻雜的La(S,C)-TiO2陣列膜，研究水熱反應(yīng)溫度、非離子型高分子模板劑用量和La、S復(fù)合摻雜的協(xié)同效應(yīng)對(duì)納米TiO2膜性能的影響，并通過(guò)XRD、BET、EDS和SEM等手段進(jìn)行表征。結(jié)果表明：水熱反應(yīng)溫度為150 ℃，反應(yīng)時(shí)間控制在10 h時(shí)可得到銳鈦礦相的TiO2膜；模板劑P123用量為0.03(與Ti的摩爾比)時(shí)，可以將TiO2顆粒的比表面積從146 m2/g提高到240 m2/g，并形成有序排列的陣列膜；適量地復(fù)合摻雜La和S(C)，可使TiO2膜的光催化活性大大提高，在3 h內(nèi)將甲基橙完全降解。
關(guān)鍵字: 陣列膜；模板劑；水熱法；復(fù)合摻雜；光催化活性
hydrothermal-templating method
（School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China）
Abstract:The La(S,C)-TiO2 oriented films were prepared on porous hadites by hydrothermal-templating method at low temperatures. The effects of the hydrothermal reaction temperature, addition of template agents, synergism effect of La/S codoping on the performances of nano-TiO2 films were studied. The performances of the films were characterized by XRD, UV-Vis BET, EDS and SEM. The results show that the TiO2 film with anatase phase is obtained when the hydrothermal reaction temperature is 150 ℃ and the reacting time is 10 h. The oriented film is obtained when the molar ratio of template P123 to Ti is 0.03, and the specific surface area of particles in the film increases from 146 m2/g to 240 m2/g. The appropriate amount of La and S codoping greatly improves the photocatalytic activity of TiO2 film, which fully decomposes methyl orange in water within 3 h.
Key words: oriented film; templating agent; hydrothermal method; codoping; photocatalytic activity
