In this report, a one-step synthesis method has been documented for the fabrication of silver (Ag)-polymer composite material, where the metal nanoparticles are encapsulated within the polymer matrix. The formation of composite material was optically monitored using UV vis and photoluminescence spectroscopic techniques. Other surface characterization and microscopic techniques were applied to realize more detail structural information of the composite. The synthesized composite material was applied as a catalyst for the electrochemical recognition of Epinephrine. (C) 2017 Elsevier B.V. All rights reserved.