The activated carbon (AC) was
impregnated into titanium tetraethoxide/urea/methanol solution, and then the impregnated AC powder was
kept in water vapor at 90 °C for 3 h for hydrolysis.
Then it was calcinated to fabricate N–TiO2/AC. Transmission
electron microscopy (TEM) results showed that the nitrogen doped TiO2 (N–TiO2) in the as-synthesized
hybrid was anatase TiO2 powder with 10–20 nm in grain size, and the bandgap was about 3.08 eV. Moreover,
the hybrid photocatalyst (8 wt.% N–TiO2) had high specific surface area that was up to 1321 m2/g. The hybrid
photocatalyst is expected to have high photocatalytic performance with visible irradiation.