“…Synthesis of a Fenton-like heterogeneous catalyst using Fe 3 O 4 and support of porous carbon materials such as graphene oxide, carbon nanotubes, activated carbon, and biochar is imperative owing to their higher surface area and specific pore structure that may prevent oxidation and aggregation. [1,[24][25][26] Among them, Biochar (BC) is a versatile carbon-containing material obtained through the thermal decomposition of lignocellulosic biomass, making it an ideal support material for iron oxides. Unlike activated carbon, biochar offers a larger surface area and various surface functionalities (e. g., À OH, À COOH, CÀ O/C=O), making it suitable for designing metal oxide nanocomposites.…”