Fabrication of nitrogen-doped TiO2 monolith with well-defined macroporous and bicrystalline framework and its photocatalytic performance under visible light

- Nitrogen-doped porous TiO2 monolith was fabricated by sol-gel and ammonolysis.
- Nitrogen-doped porous TiO2 monolith has macrochannels with the diameter of 1.5-3.0 μm.
- The OTiN bonds were formed after nitrogen doping into the lattice of TiO2.
- The photocatalytic activity of the samples was investigated under visible light.
- About 50% of Rhodamine B was degraded by N-doped TiO2 porous monolith within 120 min.