108087.fig.005a
(a)
108087.fig.005b
(b)
108087.fig.005c
(c)
108087.fig.005d
(d)
Figure 5: Nitrogen adsorption/desorption isotherms with the corresponding pore size distribution curves of mesoporous titania samples after calcination: (a) TiO2, (b) TiO2-PEI, (c) TiO2-P123, and (d) Hombikat.