Nano-Polyoxotungstate [Cu₂₀P₈W₄₈] Immobilized on Magnetic Nanoparticles as an Excellent Heterogeneous Catalyst Nanoreactors for Green Reduction of Nitrophenol Compounds

Scheme 2

A plausible mechanism for the reduction of 4-NP and 2,4,6-TNP to aminophenol compounds in the presence of [Fe₃O₄@SiO₂-NH₂-Cu₂₀P₈W₄₈] nanocatalyst and NaBH₄.