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Tuesday, 17 September 2019
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Raw materials & technologies, Technologies

Cyclodextrin-based functionalised graphene oxide as an effective corrosion inhibitor

Wednesday, 10 July 2019

For a recent study, cyclodextrin-based functionalised graphene was synthesised. It was evaluated as an effective corrosion inhibitor for carbon steel in acidic environment.

Cyclodextrin-based functionalised Graphene Oxide (CD-GO), was synthesised utilising cost-effective waste graphite (symbol image). Image source: Shawn Hempel - stock.adobe.com.
Cyclodextrin-based functionalised Graphene Oxide (CD-GO), was synthesised utilising cost-effective waste graphite (symbol image). Image source: Sha...

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.

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