Catalytic reduction of 4-nitrophenol using Cu/Cu2O nanocomposites based on magnetic maize straw

In this work, a novel copper-based nanocomposite catalyst was fabricated by using magnetic maize straw as support for the reduction of 4-nitrophenol (4-NP). Magnetic prepared amidation reaction amine-functionalized magnetite nanoparticles (NH2–Fe3O4) with succinylated (S-MS). After (Mag-S-MS) mixed cupric ions aqueous solution, Cu(II) could be captured amino and carboxylate groups reduced sodium borohydride (NaBH4). The product characterized scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-rays diffraction (XRD), Brunauer–Emmett–Teller (BET), X-ray photoelectron (XPS) thermogravimetric analysis (TGA), which indicated binary Cu/Cu2O nanocomposites (NCs) were formed successfully on Mag-S-MS without self-aggregation oxidation. Then, it investigated 4-NP to 4-aminophenol (4-AP) via hydrogenation NaBH4 reducing agent. effect dosage catalyst, initial concentrations investigated. mechanic investigation proposed Cu Cu2O played synergistic role hydrogen transformation enhance its catalytic ability. Compared other reported catalysts, NCs-loaded possessed higher efficiency rate constant value. Due superparamagnetic nature, quickly collected from solution under field maintained relatively high activity after five cycle tests. present study outlines method agricultural waste in nanocatalytic reactions.