Solid-State Synthesis, Characterization, and Investigation of The Photocatalytic Efficiency of MnSb2O6 Nanomaterials for the Degradation of Malachite Green under UVC Irradiation

Document Type : Research Article


1 Department of Physics, Jundishapur University of Technology, Dezful, I.R. IRAN

2 Department of Physics, Jundi-Shapur University of Technology, Dezful, I.R. IRAN


The present work reports the synthesis of MnSb2O6 nanomaterials by one step solid-state at 800 ºC at 8 h using Sb2O3, MnCl2, and Mn(NO3)2 raw materials. The raw materials for the synthesis of the doped materials were Gd2O3, Tb2O3, and Ho2O3. Rietveld analysis was used for the investigation of the crystal phase-type, purity, and the other crystallographic parameters. It was found that MnSb2O6 was crystallized in the trigonal crystal system with the space group P321. SEM images were used for the investigation of the morphology of the obtained materials. The direct optical band gap energies of the obtained materials were obtained using the absorption spectra. The data showed that the values are 1.85, 1.90, 1.89, 2.1 eV for MnSb2O6, doped materials with Tb3+, Gd3+, and Ho3+, respectively. The XRD data indicated that the crystallographic unit cell parameter and unit cell volume values were not changed considerably when the lanthanide ions were intercalated into the crystal system. This means that the ions are positioned into the crystal cavity with a larger cavity value. FESEM images showed that the morphology of the obtained materials is multigoal structures. The photocatalytic performance of MnSb2O6 was studied for the degradation of malachite green in the aqueous solution under UVC irradiation. The power of the lamp was 18 W. The distance between the lamp and the surface of the solution was 30 cm. The degradation efficiency at the optimum conditions: 0.7 mL of H2O2, 0.03 g of catalyst, and 58 min reaction time was 81%. The volume and the concentration of malachite green were 100 mL and 60 ppm.


Main Subjects

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