Abstract
Novel TiO2/g-C3N4 hollow nanotube heterojunction was prepared via a molten salts method. The X-ray diffraction (XRD) result showed the crystalline phase of g-C3N4 hollow nanotube was changed from triazine-based g-C3N4 phase transition to heptazine-based g-C3N4 phase with the addition of TiO2 nanoparticles. The square hollow morphology, about 400 nm width and 60–70 nm wall thickness were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The UV-vis diffuse reflectance spectra (DRS) implied that the heterojunction can capture more visible light. The photoluminescence (PL) spectra showed that the heterojunction had efficient separation of photo generated electrons and holes. The heterojunction showed a rapid RhB degradation with the degradation rate of 95% in 60 min.
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