oxidant-free synthesis of mil-88/pani to achieve excellent corrosion inhibition properties in nacl solution

In this research, the mil-88a was synthesized using fumaric acid and iron (iii) chloride, then the polyaniline (pani) was polymerized in the presence of mil-88a within a week. there was no oxidant such as ammoniumpersulfate (aps) in the reactor. actually, the excess of free fe3+ sites on the mil-88a surface acted as oxidant agent for polymerization of aniline monomers. the fourier-transform infrared spectroscopy (ftir) plot confirmed the composition of pani in quinonoid structure. the particles characterized by thermal gravimetric analysis (tga), x-ray diffraction (xrd), field emission scanning electron microscopy (fe-sem), and energy-dispersive x-ray spectroscopy (eds). the electrochemical impedance spectroscopy (eis) of mild steels in nacl solution with and without mil-88a/pani and mil-88 nanoparticles demonstrated superior performance of mil-88a/pani. the semicircle diameter in mil-88/pani sample had almost 100% and 50% increase compare to blank and mil-88, respectively after 24 hours immersion.

Oxidant-free synthesis of MIL-88/PANI to achieve excellent corrosion inhibition properties in NaCl solution

In this research, the MIL-88A was synthesized using fumaric acid and iron (III) chloride, then the polyaniline (PANI) was polymerized in the presence of MIL-88A within a week. There was no oxidant such as ammoniumpersulfate (APS) in the reactor. Actually, the excess of free Fe3+ sites on the MIL-88A surface acted as oxidant agent for polymerization of aniline monomers. The Fourier-transform infrared spectroscopy (FTIR) plot confirmed the composition of PANI in quinonoid structure. The particles characterized by thermal gravimetric analysis (TGA), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and energy-dispersive X-ray spectroscopy (EDS). The electrochemical impedance spectroscopy (EIS) of mild steels in NaCl solution with and without MIL-88A/PANI and MIL-88 nanoparticles demonstrated superior performance of MIL-88A/PANI. The semicircle diameter in MIL-88/PANI sample had almost 100% and 50% increase compare to blank and MIL-88, respectively after 24 hours immersion.