Implementation of magnetic Fe₃O₄@ZIF-8 nanocomposite to activate sodium percarbonate for highly effective degradation of organic compound in aqueous solution

Here, as-synthesized Fe₃O₄ nanoparticles were incorporated into the zeolitic imidazolate framework (ZIF-8) lattice to activate sodium percarbonate (SPC) for degradation of methylene blue (MB). The reaction rate constant of Fe₃O₄@ZIF-8/SPC process (0.0632 min⁻¹) at acidic conditions (pH = 3) was more than six times that of the Fe₃O₄/SPC system (0.009 min⁻¹). Decreasing the solute concentration, along with increasing SPC concentration and Fe₃O₄@ZIF-8 nanocomposite (NC) dosage, favored the catalytic degradation of MB. The Fe₃O₄@ZIF-8 NC after fifteen consecutive treatment processes showed the excellent stability with a negligible drop in the efficiency of the system (<10%). The reaction pathway was obtained via GC–MS analysis.