The basic characteristics of the catalyst were listed in Table 1.
For the as prepared nanoparticles, the element contained 99.9%
TiO2 with infinitesimal impurity, the BET surface area was
131.59 m2/g, the pore volumes was analyzed to be 0.28 cm3/g
and the average pore size was 6.53 nm, which were consistent with
the TEM observation. Therefore, the remarkable surface area of the
powders was formed due to the generation of porous pores, and a
large number of rough and cracks exhibited on the interface after
calcination. As shown from the nitrogen adsorption–desorption
isotherm and pore size distribution of TiO2 (Fig. 5), the isotherm
showed typical TypeIV pattern with hysteresis loop, characteristic
of mesoporous material according to the classification of IUPAC.
The specific surface area of anatase TiO2 could not only increase
the opportunity for the photocatalyst to contact with the active
radicals but also improved the adsorption capacity of target pollutions,
giving rise to the degradation efficiency of TC in water [24].