Photocatalytic activity of the La.7Ca0.3MnO3 nanorods

Abstract

La0.7Ca0.3MnO3 (LCMO) powder was synthesized via the hydrothermal method. Structural, morphological, and optical properties of the as-prepared sample were systematically characterized. The XRD results proved the existence of only one crystalline phase. The FESEM image indicates that the La0.7Ca0.3MnO3 sample has a nanorod structure with an average diameter of approximately 125 nm. According to UV-Vis analysis, the band gap energy of the sample was estimated about 2.13 eV. The adsorption and photocatalytic performances of LCMO nanostructure were systematically characterized. The photoactivity efficiency for decolorizing Rhodamine B solution (10 ppm), by LCMO (0.5 g/L), with nearly 80 min illumination, was more than 90% with a reaction rate constant of 0.029 min−1. Ultimately, the reusability of the photocatalyst for degrading the RhB dye was investigated using six cycles. The good reusability and stability of LCMO implies a potential application for dealing with high-concentration dyes by adsorption–photocatalytic degradation.

Keywords

• hydrothermal
• la0.7ca0.3mno3
• photocatalysis
• adsorption
• hybrid process
• rhodamine b