TY - JOUR
T1 - Highly ordered mesoporous silica structures templated by poly(butylene oxide) segment di- and tri-block copolymers
AU - Yu, Chengzhong
AU - Yu, Yonghao
AU - Miao, Lei
AU - Zhao, Dongyuan
PY - 2001/6
Y1 - 2001/6
N2 - 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.
AB - 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.
KW - Block copolymer
KW - Mesoporous materials
KW - Synthesis
UR - https://www.scopus.com/pages/publications/0035364809
U2 - 10.1016/S1387-1811(01)00169-X
DO - 10.1016/S1387-1811(01)00169-X
M3 - 文章
AN - SCOPUS:0035364809
SN - 1387-1811
VL - 44-45
SP - 65
EP - 72
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
ER -