Synthesis of mesoporous silica helical fibers using a catanionic-neutral ternary surfactant in a highly dilute silica solution: Biomimetic silicification

Giung G. Lin, Yi Hua Tsai, Hong Ping Lin, Chih Yuan Tang, Ching Yen Lin

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Mesoporous silica helical fibers in many different shapes have been synthesized in a highly dilute silicate solution at pH ∼2.0 by using C nTMAB-SDS-P123 (n = 14-18) ternary surfactant as a template. The mesoporous silica helical fibers possess a well-ordered hexagonal mesostructure, high surface area, and large pore volume. Thus, the microtome sections of the helical fibers demonstrate a concentric mesotructure or two hemiconcentric mesostructures. In addition to triblock copolymer, adding the proper amount of 1-butanol or pentanol can promote the yield of the helical fibers as well. The yield of the surfactant-templated helical fibers is also dependent on the water content, reaction temperature, and pH value of the solution. The mesoporous silica helical fiber can be used as a solid template to prepare mesoporous carbon helical fibers via impregnation of phenol-formaldehyde, pyrolysis, and silica removal.

Original languageEnglish
Pages (from-to)4115-4119
Number of pages5
JournalLangmuir
Volume23
Issue number8
DOIs
Publication statusPublished - 2007 Apr 10

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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