Cyclodextrin-based functionalised graphene oxide as an effective corrosion inhibitor
Cyclodextrin-based functionalised Graphene Oxide (CD-GO), was synthesised utilising cost-effective waste graphite as a source for production of graphene. The obtained novel material, CD-GO, was characterised and evaluated for corrosion inhibition of X60 carbon steels in solutions of HCl at room temperature. The inhibition efficacy of the CD-GO material was evaluated by the use of the weight loss measurement as well as electrochemical techniques. The findings from both were in excellent agreements.
Growth of the protective film
CD-GO demonstrated high inhibition efficacy which enhances with increasing CD-GO concentrations. The SEM/EDX, FTIR, and UV–vis surface characterisation analysis prove the growth of the protective film of CD-GO on the steel surface.
The CD-GO materials were adsorbed on the surface of the steel via oxygen atoms of the CD-GO forming a CD-GO/metal complex on the steel surface.
The work is of importance and has dual benefits; graphene was prepared from waste graphite and converted into useful materials used to solve the corrosion problem.
The study has been publidhes in Progress in Organic Coatings, Volume 128.