文献类型：期刊文献

英文题名：Effect of counterions on synthesis of mesoporous silica by the route of template

作者：Yang, Yu-Xiang[1,4]; Qu, Xu-Ping[1]; Chen, Ya-Ru[1]; Jia, Xiang-Chen[1]; Zhang, Jian-Bo[2]; Liu, Xiang-Nong[3]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[2]Peking Univ, Dept Environm Sci, Beijing 100871, Peoples R China;[3]Yangzhou Univ, Anal Test Ctr, Yangzhou 225009, Peoples R China

年份：2007

卷号：90

期号：7

起止页码：2050

外文期刊名：JOURNAL OF THE AMERICAN CERAMIC SOCIETY

收录：;EI(收录号：20073110733786);WOS:【SCI-EXPANDED(收录号:WOS:000247756500012)】；

语种：英文

外文关键词：Mesoporous materials - Pore size - Scanning electron microscopy - Specific surface area - Synthesis (chemical) - X ray diffraction

摘要：Mesoporous silica materials with ordered hexagonal and parallel-arranged pore channel have been synthesized using cetyl trimethylammonium bromide as a template and Na2SO4 as counterions. Their ordered mesostructures were characterized by infrared spectroscopy, X-ray diffraction patterns, scanning electron microscopy, transmission electron microscopy, and nitrogen sorption analysis. The effects of Na2SO4 concentration on variations of morphology, specific surface area, and pore size were discussed; the results show that a high concentration of Na2SO4 induces the formation of crystal threads with a "tubules-within-tubule" structure, and also leads to mesoporous silica materials with spherical, fabaceous, sheet-like, or prismatic shapes. The results also show that a high concentration of Na2SO4 can make the pore size decrease, but cannot change pore wall thickness, demonstrating the stability of the hexagonal-shaped pores.