Easily modify graphene oxide with lysine.

A new study focuses on modifying graphene oxide with lysine to improve the corrosion resistance of water-based epoxy coatings.
in order to develop the compatibleity of graphene oxide (GO) nanochips with water-based epoxy (EP) coatings, GO (LY-GO) is modified with a natural amino acid (lysine) with dual amines.
results obtained from Fourier Transform Infrared (FTIR) spectra, Raman spectra, X-ray photoelectronic energy spectrum (XPS), X-ray diffraction (XRD) confirm that lysine can be successfully modified on the GO surface

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then introduces LY-GO nanomaterials into the EP coating on low carbon steel substrates. SEM images show that the distribution of LY-GO in EP coatings has improved significantly due to lysine modification. The effects of LY-GO and GO nanofiles on the corrosion resistance of EP coatings were studied through the electrochemical dynamic polarization test, electrochemical impedance spectrum (EIS) and salt spray test.
LY-GO nanoskeles significantly enhance corrosion resistance
the results show that evenly distributed LY-GO nanoskeles significantly enhance the corrosion resistance of EP coatings. At the same filler content, LY-GO provides BETTER corrosion resistance than GO coatings, and LY-GO/EP coatings have corrosion rates that are approximately two orders of magnitude lower than GO/EP. In addition, LY-GO can effectively reduce the layering of the coating during the 500 h salt spray test.
can be found in Volume 136 of Progress in Organic Coatings.
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