The synthesis
of nanoporous silica and diphenylcarbazide-functionalized material
(DPC-SBA-15) was characterized by IR spectroscopy, low-angle
X-ray diffraction, BET surface area measurement and elemental
analysis.
Diphenylcarbazide-functionalized colloidal silica was prepared
similarly as described for the SBA-15. In a typical reaction, 1.0 g
of colloidal silica was suspended in 50 mL toluene and the mixture
was stirred for 1 h and then 3-choloro-propyltriethoxysilane
(2.0 g) was added and the mixture was refluxed for 12 h under
nitrogen atmosphere. The resultant solid was suspended in 100 mL
toluene and triethylamine mixture (1:1, v/v) and an excess amount
of diphenylcarbazide (5.0 g) was added. After 24 h reflux, the yellow
solid was removed from solvent by filtration, washed with toluene
and acetone and then dried at room temperature.
The synthesisof nanoporous silica and diphenylcarbazide-functionalized material(DPC-SBA-15) was characterized by IR spectroscopy, low-angleX-ray diffraction, BET surface area measurement and elementalanalysis.Diphenylcarbazide-functionalized colloidal silica was preparedsimilarly as described for the SBA-15. In a typical reaction, 1.0 gof colloidal silica was suspended in 50 mL toluene and the mixturewas stirred for 1 h and then 3-choloro-propyltriethoxysilane(2.0 g) was added and the mixture was refluxed for 12 h undernitrogen atmosphere. The resultant solid was suspended in 100 mLtoluene and triethylamine mixture (1:1, v/v) and an excess amountof diphenylcarbazide (5.0 g) was added. After 24 h reflux, the yellowsolid was removed from solvent by filtration, washed with tolueneand acetone and then dried at room temperature.
การแปล กรุณารอสักครู่..
