Synthesis of LaVO4/TiO2 heterojunction nanotubes by sol-gel coupled with hydrothermal method for photocatalytic air purification

► LaVO4/TiO2 nanotubes were prepared by sol-gel coupled with hydrothermal method. ► Toluene removal efficiency was 75% in 6 h using the 1% LaVO4/TiO2 nanotubes. ► The LaVO4/TiO2 nanotubes showed favorable photochemical stability.