Figure 1: Physico-chemical characteristics of titanium dioxide nano (A) and pigment (B) particles.
A
Size (ø) nm a
15-25
Form
Spherical
Average
TEM Size
(nm+sd)
BET Surface
Area (m2. g-1) a
12
210
Zeta Potential
(mV)
Hydrodynamic
Diameter (nm)
Crystalline
Structure
Manufacturing
Process
Surface
Modifications
Impurities a
(% basis)
a Manufacturer's
B
2
-52
22 and 272
Anatase
Sol Gel Process
Non
0.3
50 nm
data
Size (ø) nm a
Not specified
Form
Rod
Average
TEM Size
(nm+sd)
BET Surface
Area (m2. g-1)
231
93
14.7
Zeta Potential
(mV)
Hydrodynamic
Diameter (nm)
Crystalline
Structure
Manufacturing
Process
Surface
Modifications
-22
76 and 576
Rutile
Sulphate process
Aluminum oxide
Al2O3 & Amorphous
SiO2
6
Impurities a
(% basis)
a Manufacturer's
3
data
500 nm