Highly ordered mesoporous silica structures templated by poly(butylene oxide) segment di- and tri-block copolymers

Chengzhong Yu, Yonghao Yu, Lei Miao, Dongyuan Zhao

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Highly ordered mesoporous silica structures including body-centered cubic (Im 3̄ m), two-dimensional hexagonal (p6mm) and lamellar (Lα) symmetries have been synthesized by using hydrophobic poly(butylene oxide) moiety diblock and triblock copolymers as structure-directing agents. Under acidic condition, highly ordered, caged cubic mesoporous silica structures (FDU-1, Im 3̄ m) with a large cell parameter (a = 220 Ä) can be formed in the presence of triblock poly(ethylene oxide)-poly(butylene oxide)-poly(ethylene oxide) (PEO-PBO-PEO) copolymer such as EO39BO47EO39. Calcined FDU-1 has a largest pore size of 120 Å among all known cubic silica mesostructures, a pore volume of 0.77 cm3/g, and a BET surface area of 740 m2/g. Diblock poly(butylene oxide)-poly (ethylene oxide) (PBO-PEO) copolymer such as BO10 EO16 favors to yield highly ordered two-dimensional hexagonal (p6mm) silica mesostructures with a well-uniformed pore size of 60 Å and a large BET surface area of 902 m2/g. Lamellar (Lα) mesostructures can also be obtained when high concentration diblock copolymer is used as the structure-directing agent. The calcined cubic mesostructured silica FDU-I is hydrothermally stable in boiling water for at least nine days.

Original languageEnglish (US)
Pages (from-to)65-72
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume44-45
DOIs
StatePublished - Jun 2001

Fingerprint

tetrahydrofuran
block copolymers
Silicon Dioxide
Oxides
Block copolymers
Silica
silicon dioxide
copolymers
ethylene oxide
Polyethylene oxides
porosity
Pore size
Copolymers
boiling
Boiling liquids
butylene
Water
symmetry
cells
water

Keywords

  • Block copolymer
  • Mesoporous materials
  • Synthesis

ASJC Scopus subject areas

  • Catalysis
  • Materials Science(all)

Cite this

Highly ordered mesoporous silica structures templated by poly(butylene oxide) segment di- and tri-block copolymers. / Yu, Chengzhong; Yu, Yonghao; Miao, Lei; Zhao, Dongyuan.

In: Microporous and Mesoporous Materials, Vol. 44-45, 06.2001, p. 65-72.

Research output: Contribution to journalArticle

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