Green Corrosion Inhibitor of Low Carbon Steel in Acidic Media by Pectin Nanoparticles Using Potentiostatic and Weight Losses Method

Abstract:

In the present work, corrosion inhibition of low carbon steel in a 1M H2SO4 solution by pectin nanoparticles extract was studied by potentiostatic and weight loss methods. Increasing the acid concentration leads to an increase in the corrosion rate of the electrode. The variable conditions of the pectin nanoparticles used in this investigation are (2 to 10g/l at 25oC). It was found that the concentrates acts as a compelling consumption inhibitor for gentle steel in an acidic medium. The hindrance process is credited to the adsorbed film development of the inhibitor on the metal surface of that protects the metal against corrosion. It was observed that the efficiency of the inhibition rose with increased inhibitor concentration up to the maximum level of 92% for 10 g/l at 25 oC. The results showed that the corrosion rate without the inhibitor was 2.263mpy while with the inhibitor 0.179 mpy, meaning that the rate of corrosion improved more than 90%. The results of the immersion time (1 h) at 25oC on the inhibition of the corrosion also indicated improved corrosion resistance. The results demonstrated that an extract of pectin nanoparticles could serve as an excellent eco-friendly, green corrosion inhibitor. Fourier- transform infrared spectroscopy (FTIR) results indicate that these nanoparticles contain various chemical bonds (C-C, CH2, C-O-C, and cellulose) with metal surfaces, lead to producing a barrier layer that protects the surface.

• Periodical: Materials Science Forum (Volume 1021)
• Pages: 241-250
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1021.241
• Online since: February 2021
• Authors: Basheer A. Abdulhessein*, Alaa Mashjel Ali
• Keywords: Green Corrosion, Inhibitors, Low Carbon Steel, Polarization, Weight Loss

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