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Application of Polytyramine Nanoparticles to the Corrosion Protection of Copper
Author(s) -
Farhadi Khalil,
Banisaeid Sepideh,
Jamali Arezu,
Zebhi Hamid,
Ghelichkhah Zahed,
Khalili Hedayat,
Abbasi Robab
Publication year - 2015
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201500219
Subject(s) - chemistry , copper , cyclic voltammetry , dielectric spectroscopy , corrosion , fourier transform infrared spectroscopy , oxalic acid , polarization (electrochemistry) , electrochemistry , scanning electron microscope , inorganic chemistry , nuclear chemistry , metallurgy , electrode , chemical engineering , materials science , composite material , organic chemistry , engineering
Electrochemical polymerization of tyramine was achieved on copper electrode surface from tyramine in 0.3 M oxalic acid (pH=1.2) solution by using cyclic voltammetry technique. The formation of polytyramine nanoparicles (PTN) were characterized by cyclic voltammetry (CV), fourier transform infrared‐attenuated total reflectance (FTIR‐ATR) spectroscopy and scanning electron microscopy (SEM). The corrosion behavior of PTN coated copper was investigated by means of the change of open circuit potential with exposure time (E ocp t), electrochemical impedance spectroscopy (EIS) and anodic polarization curves in 3.5 % NaCl solutions at room temperature. The obtained results showed the shift of corrosion potential toward positive values for electropolymerized copper and a significant decrease in corrosion current and corrosion rate in comparison with bare copper, so that the PTNs coating could be used as an important protection against corrosion of copper.