Inorganic Microporous Membranes for Gas Separation in Fossil Fuel ...

4 Results and discussion
Particle size in nm
8
7
6
5
4
3
2
1
0
8
7
6
5
4
3
2
1
0
DLS
0 25 50 75 100
SAXS
0 25 50 75 100
mol % TiO 2 in ZrO 2
Figure 43 Particle sizes measured by DLS (dark grey) and SAXS (light grey) as function mol% TiO2 in
ZrO2 DEA-sols.
Abundance %
35
30
25
20
15
10
5
50 mol% TiO 2 in ZrO 2
DEA
DIPA
0
1 10 100
Particle size [nm]
Figure 44 Particle size distribution by DLS of 50 mol% TiO2 in ZrO2 with DEA (solid line) and DIPA
(dashed line) as precursor modifier
The particle size measured by DLS or SAXS increased approximately 25% if the solid
content of the 50 mol% TiO2 in ZrO2 DEA-sol was doubled (Table 21). This increase in
the particle size diameter as a function of the concentration is within the error. A
significant difference in particle size is observed between ZrO2 and TiO2 DEA-sols when
only the SAXS results are considered. More measurements are required to explain this
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