Study on visible light photocatalytic activity and mechanism of spherical Bi12TiO20 nanoparticles prepared by low-power hydrothermal method

▶ Synthesiaing Bi12TiO20 nanoparticles within 2 h hydrothermal treatment. ▶ Bi12TiO20 has spherical structures with good dispersion and high BET surface area. ▶ Bi12TiO20 has a high activity under visible light irradiation. ▶ The photocatalytic mechanisms were identified.