Enhanced photocatalytic performances of highly efficient perovskite BaSnO3 nanorods decorated by CuMn2O4 nanoparticles

We report the fabrication of perovskite BaSnO3 nanorods decorated by CuMn2O4 nanoparticles by hydrothermal approach and their application as highly efficient for Ciprofloxacin (CIP) degradation under visible light illu-mination. The TEM image indicated the formation of BaSnO3 nanorods with average diameters and lengths of 50-80 nm and 0.5 mu m decorated uniformly with CuMn2O4 NPs in the range of 10-20 nm. XRD revealed that the BaSnO3 nanorods with the formation of cubic perovskite structure and the spinel structure of CuMn2O4 with highly crystalline have been constructed. The results indicated that incorporating CuMn2O4 enhanced the photocatalytic performance of BaSnO3 nanorods. Overall the synthesized CuMn2O4/BaSnO3 nanocomposites, 15 % CuMn2O4/BaSnO3 nanocomposite, exhibited the highest photocatalytic ability of 100 % and constant rate of 0.0192 min-1 within 40 min. The photocatalytic ability of 15 % CuMn2O4/BaSnO3 nanocomposite was 4 and 2.2 times larger than that of bare CuMn2O4 and BaSnO3 nanorods. This was explained by the effective charge separation at the heterojunction CuMn2O4/BaSnO3 interface and the low recombination rate in charge carriers. The photocurrent and photoluminescence responses were utilized to verify the photocatalytic performance of CuMn2O4/BaSnO3 photocatalyst. The synthesized CuMn2O4/BaSnO3 nanocomposite with superb photocatalytic performance can be a promising candidate for detoxifying the organic compounds from industrial and domestic wastewater.

Automated summary

CuMn2O4/BaSnO3 nanocomposites fabricated by hydrothermal approach exhibited superb photocatalytic performance for Ciprofloxacin degradation under visible light illumination.