Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (01): 150-154.doi: 10.3866/PKU.WHXB20090127

• ARTICLE • Previous Articles     Next Articles

Effects of pH on the Structure of Non-Ionically Templated MSU-X Mesoporous Silica via a Two-Step Synthesis

JIN Zheng-Wei; LIU Chang-Ling; LIANG Hao   

  1. School of Packaging and Printing Engineering, Tianjin University of Science and Technology, Tianjin 300222, P. R. China; College of Chemical and Materials Engineering, Jilin Institute of Chemical Technology, Jilin 132022, Jilin Province, P. R. China; Department of Pharmaceutical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2008-08-13 Revised:2008-09-16 Published:2008-12-31
  • Contact: JIN Zheng-Wei

Abstract: Highly ordered MSU-X type mesoporous silica was synthesized by using ethoxylated derivatives of fatty esters of sorbitan (Tween 20) as template via a two-step pathway under mildly acidic conditions (pH=3.32-4.26) without the addition of fluoride. The template concentration (ca 2% (w)) is much lower than for conventional synthetic routes and the synthetic medium is much simpler than that used for other two-step pathways. The obtained materials have high specific surface areas, large pore volumes, and thick pore walls. Transformations of exterior morphologies and inner structure of mesoporous silica were found by varying the pH and keeping all other conditions constant.

Key words: Two-step synthesis, MSU-X, Mesoporous silica, Tween 20


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