The photoactivity of N‐doped TiO2 (N‐TiO2)
varies with the preparation method, the precursors used to
dope the nitrogen, and the target pollutant. The solvothermal
technique, which facilitates the control of grain size, particle
morphology, microstructure, and phase composition, has garnered
more and more attention for preparing TiO2 nanoparticles.
Recently, Jing et al.