Premium
Electrochemical recovery of metal copper in microbial fuel cell using graphene oxide/polypyrrole cathode catalyst
Author(s) -
Rikame Satish S.,
Mungray Alka A.,
Mungray Arvind K.
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6277
Subject(s) - polypyrrole , graphene , materials science , oxide , cyclic voltammetry , graphene oxide paper , chemical engineering , graphite oxide , dielectric spectroscopy , polymerization , inorganic chemistry , electrochemistry , electrode , nanotechnology , chemistry , composite material , metallurgy , polymer , engineering
Summary The graphene oxide and conducting polypyrrole composite modified cathodes is prepared by electro‐polymerization. The microscopic images of the graphene oxide/polypyrrole composite confirmed that the active carbon support was entirely covered by polypyrrole. The ascertain graphene oxide/polypyrrole composite is characterized through Fourier transform infrared spectroscopy and X‐ray diffraction. The graphene oxide/polypyrrole composite exhibited higher open circuit voltage. The Cyclic voltammetry and Electrochemical impedance spectroscopy analysis suggest the improved performance of graphene oxide/polypyrrole as compared to polypyrrole and bare graphite in terms of lower internal resistance and better electro‐catalytic activity. The large amount of active spots with continual hauler networks of graphene oxide/polypyrrole compound showed an improved microbial fuel cell power output of 600.25 mW/m 3 . Graphene oxide/polypyrrole as a cathode catalyst is proved to be sustainable for the effective remediation of metal copper. The maximum copper recovery is 98.88% with simultaneous % Chemical oxygen demand reduction of 98.6%. These research findings suggest the possible knowledge for the synthesis of graphene based composites by electro‐polymerization.