Development of Bicontinuous Mesoporous Oxide Materials

设计材料的表面或界面结构是开发高性能吸附剂、催化剂和电极的关键。特别是多孔材料的合成是其中一个重要的研究方向。目前的研究重点是开发双连续介孔和大孔无机氧化物作为这些功能材料的候选材料。结果表明，采用双连续微乳液辅助法和胶体晶体模板法分别成功地合成了介孔金属硅酸盐和锐钛矿- tio_2，以及大孔LaMnO_3钙钛矿和碳。介孔和大孔的存在使得质量的传递更加顺畅，多孔材料的高表面积使得反应面积大，从而提高了材料的性能。介孔金属硅酸盐含Al、Fe或Ti为外源元素，对亚甲基蓝具有较高的吸附和光催化分解能力。介孔锐钛矿- tio_2由于底物的平滑扩散，对亚甲基蓝具有良好的光催化作用。采用胶体晶体模板法制备的中孔和大孔碳具有较高的双电层容性。介孔和大孔TiO_2均表现出高速率的锂嵌入性能。

It is of key points to design the surface or the interface structure of materials to develop high performance adsorbents, catalysts and electrodes. Especially synthesis of porous materials is important as one of such investigations. The present study focused on a development of bicontinuous mesoporous and macroporous inorganic oxides as candidates of these functional materials.As a result, mesoporous metallosilicates and anatase-TiO_2 as well as macroporous LaMnO_3 perovskite and carbons were successfully synthesized by a bicontinuous microemulsion aided process and a colloidal crystal-template process, respectively. The mesopores and macropores enable mass transport smoothly and the high surface area of porous materials made the performance increased due to the high reaction area as follows.1.Mesoporous metallosilicates incorporated Al, Fe or Ti as a foreign element showed high adsorption and photocalatytic decomposition of methylene blue.2.Mesoporous anatase-TiO_2 showed high photocalatytic decomposition of methylene blue due to the smooth diffusion of substrate.3.Mesoporous and macroporous carbons obtained by a colloidal crystal-template process showed high electric double-layer capacitive property.4.Mesoporous and macroporous TiO_2 showed high rate Li-intercalation property.