Synthesis of nanosized TiO2 particles in reverse micelle systems and their photocatalytic activity for degradation of toluene in gas phase
Synthesis of nanosized TiO2 particles in reverse micelle systems and their photocatalytic activity for degradation of toluene in gas phase
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DOI：
10.1016/j.molcata.2006.06.053
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发表时间：
2006-12-15
影响因子：
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通讯作者：
Ohno, Teruhisa
中科院分区：
文献类型：
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作者：
Inaba, Ryoji;Fukahori, Takayuki;Ohno, Teruhisa
以水/Triton X-100/异辛烷反胶束溶液为反应介质，钛酸四丁酯为原料，通过水解反应制备了高结晶度、大比表面积的纯TiO 2纳米粒子。采用XRD、BET、TGA、FT-IR和TEM等手段对所制备的纳米TiO 2进行了表征。通过改变反胶束溶液的含水量来控制超细粒子的尺寸。TiO 2粒子具有单分散性、大比表面积、高结晶度和热稳定性。以气相甲苯为反应物，考察了TiO 2颗粒的光催化活性。TiO 2纳米颗粒的活性高于市售的纳米颗粒，如ST-01，这是最活跃的光催化剂在气相中降解有机化合物之一。(c)2006 Elsevier B. V.保留所有权利。
Nanosized pure TiO2 particles with high crystallinity and large surface area were prepared by hydrolysis of tetrabutyl titanate in water/Triton X-100/isooctane reverse micelle solutions as reaction media followed by hydrothermal treatment to improve crystallinity. The prepared TiO2 nanoparticles were characterized by XRD, BET, TGA, FT-IR and TEM. The size of ultrafine particles was controlled by changing the water content of the reverse micelle solution. The TiO2 particles showed monodispersity, large surface area and high degrees of crystallinity and thermostability. The photocatalytic activity of the TiO2 particles was evaluated by decomposition of toluene in the gas phase. The activity of the TiO2 nanoparticles was higher than that of commercially available anatase fine particles, such as ST-01, which is one of the most active photocatalysts for degradation of organic compounds in the gas phase. (c) 2006 Elsevier B.V. All rights reserved.