Biomedical Engineering Reference
In-Depth Information
Table 13.1
All kinds of mesoporous materials
(Reprinted with permission from [18].
porous structure
character
highest symme-
try space group
typical
materials
XRD diffraction peak diffraction
conditions
crystalline
low degree of order
hexagonal
MSU
n
HMS, KIT
−
wide 1-2 diffraction peaks
−
1
one-dimensional
layered (no pore)
MCM
−
50
1
l
=
; 001, 002, 003, 004…
d
a
00
l
hexagonal
p6mm (17)
p6m
MCM-41
SBA-3, 15
FSM
14
3
h kk
2
++
2
=
100, 110, 200, 210…
d
2
a
2
hk
0
−
16, TMS-1
two-dimensional
(straight channels)
quartet
c2mm (9)
cmm
SBA-8
KSW
2
2
hk
da
1
=+
; 11,20,22,31,40,…
−
2
2
2
b
2
hk
h
+
k
=
2n
the three-dimen-
sional (cage pore
cavities)
hexagonal
P6
3
/mmc (194)
Cubic the
hexagonal
14
3
h kk l
2
++
2
2
=
+
2
2
2
d
a
c
hhl: l
=
2n
Pm
3
n (223)
cubic
SBA-1
SBA-6
1
hkl
2
++
2
2
; 110, 200, 210, 211, 220, 310,
=
d
2
a
2
222, 320, 321, 400…
hhl: l
2n (fi rst peak 110 has not been
observed)
=
(
Continued
)
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