The high surface area of mesoporous
silica SBA-15 has been synthesized successfully by
hydrothermal treatment with direct addition of PVA,
triblock copolymer (P123) as a direct structure agent
and tetraethyl orthosilicate (TEOS) as a precursor. The
mesoporous silica SBA-15 have been characterized with
nitrogen physisorption, scanning electron microscopy,
Fourier transformed infrared spectroscopy, and x-ray
diffraction. Measurement of nitrogen sorption indicated
that with the addition of PVA, the surface area is increased
but the pore volume and pore diameter is not significantly.
The short time of hydrothermal treatment (20 h) and using
x-ray diffraction, showed that the morphological structure
of silica SBA-15 can be changed to a orthorhombic crystal
system. The result of the FTIR and SEM-EDX characteristic
indicated the functional groups and morphology of the
SBA-15 with a narrow pore size distribution. The BET
method has exhibited the largest surface area 1726 m2/g,
pore volume 1.4 cm3/g, and pore diameter 3.2 nm. It can
be suggested that the silica mesoporous SBA-15 will have
potential application prospect in catalysis, storage, and
adsorbent