▎ 摘　　要

We report a facile environmentally friendly one-pot synthetic route for the preparation of RGO/AgNP nanocomposite using Terminalia bellirica (T. bellirica) fruit extract as a reducing and stabilizing agent. The phenolic constituents of T. bellirica fruit extract played a key role in the reduction of both GO and Ag+ ions followed by uniform decoration of AgNPs onto the RGO surface. The obtained nanocomposite was characterized by UV-Visible, FTIR, XRD, SEM-EDS, TEM-SAED and Raman spectroscopy. The resultant nanocomposite exhibited excellent catalytic activity towards the reduction of 4-NP to 4-AP in the presence of NaBH4 as reducing agent in water. The reduction reaction obeyed pseudo-first order kinetics and the rate constant was increased with increasing catalytic doses.. Mechanisms for the synthesis of RGO/AgNP nanocomposite and catalytic reduction of 4-NP are discussed. This is a simple and low cost method for the fabrication of highly active catalyst material for the reduction of anthropogenic pollutant 4-NP in water.