Synthesis and Characterization of Metal Organic Framework based Nanostructured Composite for Environmental Application

Abstract

It is difficult to develop reliable techniques for the quick detection of heavy metal ions and related chemical species in water. There are many different species of mercury in the environment, and these species bio-amplify and become methylated to become organo-Hg species. Using FeCoMOF/PANI-NH2 as the starting substrate, we created a novel electrochemical technique called differential pulse voltammetry (DPV) for the quick screening of free Hg+2 in water on a metal-organic framework (MOF) platform. Using bimetallic MOF structures incorporate on polyaniline surface that enhance the stability and conductivity of composite. To improve Hg 2 + detection performance, FeCoMOF/PANI-NH2 nanocomposites were added to the GCE. The conductivity and sensitivity of the FeCoMOF/PANI-NH2/GCE was higher than that of pure FeCoMOF/GCE. Because functionalized conductive polymers forms on FeCoMOF as a result of presence different metal nodes, electroanalytical performance is greatly enhanced. For the electrochemical detection of Hg+2, the GCE treated with FeCoMOF/PANI-NH2 nanocomposite demonstrated the greatest performance. Furthermore, the findings from the electrochemical impedance spectrum (EIS) and cyclic voltammetry (CV) tests verified that the FeCOMOF/PANI-NH2 increased the rate of electron transfer at the solid-liquid interface.