LaCo0.5Fe0.5O3 Nanoparticles as a Highly Efficient Adsorbent for Rapid Removal of Trypan Blue Dye From Aqueous Media

Nanoparticles of perovskite-type laco0.5fe0.5o3 (lcfo) were fabricated by sol–gel method. thermal decomposition process of the complex precursor was examined by means of differential thermal analysis–thermal gravimetric analysis (dta/tga). x-ray diffraction (xrd) results showed that single perovskite phase has been completely formed after calcination at 750 °c. in addition, the surface morphology and composition of these nanopowders were also investigated using sem and edx. these nanoparticles showed the excellent adsorption efficiency towards trypan blue (tb) as a reactive dye in aqueous solution. the adsorption studies were carried out at different ph values, dye concentrations, various adsorbent dosages and contact time in a batch experiments. lcfo exhibited good dye removal efficiency at acidic ph specially ph 2. experimental results indicated that the adsorption kinetic data follow a pseudo-second-order rate for tested dye. the isotherm evaluations revealed that the freundlich model better fits to the experimental equilibrium data than langmuir the model.