An overview of how heterogeneous metal-based nanocatalysts can hydrogenate nitroarenes to amino arenes has drawn a lot of interest because of its industrial significance as an intermediate in the production of plastics, as well as for the pharmaceutical, agrochemical and material sciences industries. Novel nanocatalysts, including noble (Pd, Pt, Au, Ru, Rh and Ag) and non-noble (Cu, Fe, Ni, Co and Mn) metal nanoparticles supported on carbonaceous materials, metal-organic frameworks (MOFs) and me