Photoabsorption and photocatalysis of SrSnO3 produced by a cyclic microwave radiation

Rod-like hexagonal SrSn(OH)6 precursors were produced by a cyclic microwave radiation (CMR) of a template-free solution containing SnCl2·2H2O and (CH3CO2)2Sr at the pH 12.2, adjusted by NaOH solution. The rod-like hexagonal SrSn(OH)6 precursors were calcined at 500 °C, 700 °C and 900 °C for 3 h following the thermogravimetric analysis. In the end, the perovskite orthorhombic SrSnO3 products in the shape of rods with 530 cm−1 Sn–O stretching mode, characterized by X-ray diffraction, electron microscopy and Fourier transform infrared spectroscopy, were produced. UV–visible analysis of the best crystalline rod-like SrSnO3 indicated an exponential decreasing of photonic absorption attenuated through the orthorhombic SrSnO3 solid with 3.91 eV direct energy gap, including 85% decolorization efficiency under UV light for 320 min.

► SrSnO3 as a semiconductor.
► It is able to be synthesized by a cyclic microwave radiation.
► A promising material for photocatalysis.