Synthesis and Characterization of Li2Mn0.8Ni0.2SiO4/Mn3O4 Nanocomposite for Photocatalytic Degradation of Reactive Blue (RB5) Dye

Abstract This study successfully synthesized Li 2 MnSiO 4 /Mn 3 O (LMS/M3) and Mn 0.8 Ni 0.2 SiO (LMNS/M3) nanocomposites in a two-step method first, by preparing (M3) nanoparticles through hydrothermal second, synthesizing (LMS) (LMNS) ethylene diamine tetra-acetic assisted sol–gel method. In the last method, two are mixed hand-milling to form nanocomposites. Synthesized were characterized using X-ray diffraction, Fourier-transform infrared, Raman spectra, scanning electron microscopy, energy-dispersive spectroscopy, transmission Brunauer–Emmett–Teller surface area, pL UV–vis spectra measurements. The nanocomposite presents well-developed orthorhombic crystal structure with Pmn 1 space group. BET area measurements indicate that all prepared materials mesoporous. photocatalytic activity of M3, LMS, LMNS, (LMS/M3), was investigated degradation reactive blue 5 (RB5) under UV light irradiation homemade photoreactor. maximum photodegradation achieved at optimal pH photocatalyst dose 0.005 g/50 ml dye. Higher stability for dye efficiency attained LMS LMNS nanomaterials LMS/M3 LMNS/M3 than M3 activity. is readily recoverable shows excellent even after three cycles. RB5 followed first-order kinetics. Graphical