Synthesis and characterization of fibrous SrTiO3 particles

Fibrous SrTiO3 particles with nanosized crystals on the surface were prepared by hydrothermal reaction method using strontium hydroxide octahydrate and protonic layered tetratitanate as raw materials. SrTiO3 could be formed by two different ways simultaneously, one way is direct reaction between H2Ti4O9 and Sr(OH)2 and the other is two steps reaction involving transformation of H2Ti4O9 to monoclinic TiO2 and reaction between TiO2 and Sr(OH)2. The photocatalytic activity of fibrous SrTiO3 near ultraviolet light range (λ > 290 nm) was 1.5 times greater than that of SrTiO3 powder.