Visible photocatalytic activity of Ti-doped LaNiO₃ synthesized by solution combustion synthesis

A series of Ti-doped LaNiO₃ photocatalysts were successfully prepared by solution combustion synthesis (SCS). The influence of Ti contents on the phase, morphology and photocatalytic properties were investigated. The synthesized powders were characterized by XRD、 SEM、 EDS and PL. The results show that Ti-doped LaNiO₃ with a single perovskite structure can be synthesized by SCS, and the crystal interplanar spacing increases with the increased Ti contents. All the obtained particles have a regular spherical shape with the average size of about 80 nm. The MO(methyl orange)degradation shows that the sample with 3% mass fraction of Ti content has the best photocatalytic efficiency. A proper Ti content can largely decrease the recombination of charge carriers.