Synthesis of a silica material with surface macroporous arrays by a template method
Materials with defined porous structures have drawn considerate attention for decades. Most of these materials display similar porous structure within the entity. Sometimes materials with different surface and internal structures would be appreciated. In the present study, a microporous silica material with surface macroporous arrays was prepared by a sol-gel technique combined with a template method. The sol was prepared via hydrolysis of tetraethoxylsilane by hydrochloric acid. To this sol, monodispersed, hydrophobic polystyrene spheres were added. By ultrasonication, the spheres floated and assembled to regular arrays on the aqueous sol surface. At low temperature, the sol was gradually gelated, which froze the spheres in-situ. By washing with toluene, the polystyrene spheres were dissolved, leaving aligned arrays on the surface of the gel. The macropores can be easily controlled by selecting particles with suitable sizes. The material would find application in catalysis, sensor and adsorption.
silica porous arrays
Qing-Zhong Guo Bo Mei Ying-Wen Xue Liang Li Jiangyu Wu Guo-ping Yan
School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430073,China School of Civil Engineering,Wuhan University,Wuhan,430072,China
国际会议
2010 International Conference on Material and Manufacturing Technology(2010材料与制造技术国际会议 ICMMT2010)
重庆
英文
636-639
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）