Synthesis of Reusable IrPt/Fe₂O₃ Nanocatalysts Using Antisolvent Crystallization-Based Method

The antisolvent crystallization-based method, which involves forming precursor metal salt nanoparticles and converting them to metal/oxide nanoparticles by reduction/oxidation can be used to synthesize nanocomposites composed of catalyst nanoparticles and supporting materials. In this study, IrPt/Fe₂O₃ nanocomposites comprising an IrPt catalyst and magnetic Fe₂O₃ supporter with a controllable Ir/Pt ratio are synthesized using a two-step antisolvent crystallization-based method. The as-prepared nanocomposites exhibit excellent catalytic performance and reusability utilizing magnetism toward the hydrogenation of p-nitrophenol (p-NP).