TY - JOUR
T1 - Synthesis of silica mesoporous crystals with controlled structure and morphology using gemini surfactant
AU - Chen, Qianru
AU - Sakamoto, Yasuhiro
AU - Terasaki, Osamu
AU - Che, Shunai
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant Nos. 20425102 and 20521140450) and the China Ministry of Education. This work was partially supported by Core Research for Evolutional Science and Technology (CREST) of JST Corporation and by the Swedish Research Council (VR).
PY - 2007/9/15
Y1 - 2007/9/15
N2 - Silica mesoporous crystals with different morphologies were prepared based on the self-assembly of the gemini cationic surfactant [C16H33N+(CH3)2(CH2)3N+(CH3)3]Br2(C16-3-1) and tetraethyl orthosilicate (TEOS) in water under acidic condition. By controlling the kind of acids (H2SO4 or HCl), temperature and synthesis compositions, three well-ordered silica mesoporous crystals, cubic Fm over(3, ̄) m, three-dimensional hexagonal P63/mmc and cubic Pm over(3, ̄) n, with distinct morphologies were synthesized. In the synthesis system with H2SO4, the crystals changed the structure from Pm over(3, ̄) n to Fm over(3, ̄) m with decrease in acidity and increase in synthesis temperature; and in the synthesis with HCl, the crystals with Fm over(3, ̄) m and P63/mmc were synthesized by changing the synthesis compositions, especially C16-3-1/H2O and C16-3-1/TEOS molar ratios.
AB - Silica mesoporous crystals with different morphologies were prepared based on the self-assembly of the gemini cationic surfactant [C16H33N+(CH3)2(CH2)3N+(CH3)3]Br2(C16-3-1) and tetraethyl orthosilicate (TEOS) in water under acidic condition. By controlling the kind of acids (H2SO4 or HCl), temperature and synthesis compositions, three well-ordered silica mesoporous crystals, cubic Fm over(3, ̄) m, three-dimensional hexagonal P63/mmc and cubic Pm over(3, ̄) n, with distinct morphologies were synthesized. In the synthesis system with H2SO4, the crystals changed the structure from Pm over(3, ̄) n to Fm over(3, ̄) m with decrease in acidity and increase in synthesis temperature; and in the synthesis with HCl, the crystals with Fm over(3, ̄) m and P63/mmc were synthesized by changing the synthesis compositions, especially C16-3-1/H2O and C16-3-1/TEOS molar ratios.
KW - Gemini surfactant
KW - Mesoporous silica
KW - Mesostructure
KW - Morphology
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U2 - 10.1016/j.micromeso.2007.06.049
DO - 10.1016/j.micromeso.2007.06.049
M3 - Article
AN - SCOPUS:34548385856
SN - 1387-1811
VL - 105
SP - 24
EP - 33
JO - Zeolites
JF - Zeolites
IS - 1-2
ER -