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Fe3O4 nanoparticles decorated on cellulose aerogel (CA) from banana stems (Fe3O4@CA) were synthesized for application in the Fenton degradation of p-nitrophenol (PNP). Cellulose extracted raw was with kymene as a crosslinking agent and freeze-dried method. The Fe3O4@CA samples characterized by X-ray diffraction (XRD), Energy-dispersive spectroscopy (EDS), Scanning Electron Microscope (SEM), Transmission Microscopy (TEM), photoelectron (XPS). different contents investigated yield PNP water. affect loaded content H2O2 concentration treatment efficiency also to suggest suitable values including catalyst CA 0.40 g/g 5.0 g/L. As results, reached removal 87.92% 100 mins obey pseudo-first kinetic model reaction rate constant 0.0301 min−1. This study’s finding provides method creating environmentally friendly catalytic material, which might be used green chemical engineering.