During the last few years, synthesis of mixed complex oxide components based on transition metal ions has attracted considerable scientifc attention. Accordingly, this work demonstrated the successful synthesis of multi-component oxides consisting of Cu2+ and Mn2+ as transition metal ions through the one-step solution combustion synthesis (SCS) process. The synthesized nanoparticles were characterized by an X-ray difractometer (XRD), feld emission scanning electron microscope (FESEM), difuse refectance spectroscopy (DRS), transition electron microscopy (TEM), and dynamic light scattering (DLS) analysis. XRD results revealed that multi-component oxides were crystallized during the combustion process. The FESEM results indicated that with increasing the ratio of Mn2+ to Cu2+, morphology changes from agglomerated nanorods and nanosheets to foam-like particles. Results of DLS analysis showed that the sample with the chemical composition containing an equal ratio of Mn2+ and Cu2+ had the lowest particle size distribution. In addition, the TEM micrograph demonstrated that the particle size distribution of the sample synthesized with two diferent multivalent cations (Mn2+ and Cu2+) was less than that of the sample synthesized with a single multivalent cation. Adsorption–desorption isotherms of the as-prepared powders showed the formation of porous particles with a specifc surface area of 168 m2 /g. DRS spectroscopy results implied that multicomponent samples had narrow bandgap energy of around 2.2 eV. Moreover, the solar-driven water evaporation mass results showed that the efciency of the water evaporation process in the presence of multi-component powders could reach 100%.

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