An improved corrosion resistance of steel in hydrochloric acid solution using Hibiscus sabdariffa leaf extract
- 71 Downloads
The study used some sophisticated electrochemical techniques and surface analysis for corrosion research to unravel the inhibitive action of Hibiscus sabdariffa leaf extract on the corrosion of mild steel in 0.1 M HCl solution. The results indicate that the Hibiscus sabdariffa leaf extract acts as a mixed-type inhibitor and forms a defensive layer on the steel surface to enhance the corrosion resistance, which accounts for the diminished corrosion rate and reinforced polarization resistance. The highest inhibition efficiency of Hibiscus sabdariffa leaf extract was documented at 1500 ppm using electrochemical tests. Surface analysis indicated that a severe corrosion was observed on the steel surface exposed to solution without inhibitor addition, but less corrosion was observed on the steel surfaces exposed to the inhibited systems. Furthermore, an adsorbed layer and its components on the steel surfaces were also identified evidently by employing attenuated total reflectance Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Molecular dynamic simulation was investigated to further understand the corrosion inhibition ability of Hibiscus sabdariffa leaf extract. An agreement of the electrochemical behaviors, surface observations, and molecular dynamic simulations demonstrated the good inhibition performance of Hibiscus sabdariffa leaf extract due to the formation of protective layer via the adsorption activities.
KeywordsMild steel Hibiscus sabdariffa Corrosion inhibitor Electrochemical techniques Surface analysis
This work is funded by PetroVietnam University under grant code GV1803.
- Davis JR (2000) Corrosion: Understanding the basics. ASM Int, OhioGoogle Scholar
- Dugstad A, Lunde L, Nesic S (1994) Control of internal corrosion in multi-phase oil and gas pipelines. In: Prevention of pipeline corrosion conference, Houston, Texas, pp 1–17Google Scholar
- Ehsani A, Mahjani M, Hosseini M, Safari R, Moshrefi R, Shiri HM (2017) Evaluation of Thymus vulgaris plant extract as an eco-friendly corrosion inhibitor for stainless steel 304 in acidic solution by means of electrochemical impedance spectroscopy, electrochemical noise analysis and density functional theory. J Colloid Interface Sci 490:444–451. https://doi.org/10.1016/j.jcis.2016.11.048 CrossRefGoogle Scholar
- Hinton B, Forsyth M (2014) Rare earth-based corrosion inhibitors. Woodhead Publishing, CambridgeGoogle Scholar
- Jones DA (1996) Principles and prevention of corrosion. Printice Hall, Upper Saddle RiverGoogle Scholar
- Kumar CMP, Venkatesha TV, Shabadi R (2013) Preparation and corrosion behavior of Ni and Ni-graphene composite coatings. Mater Res Bull 48:1477–1483. https://doi.org/10.1016/j.materresbull.2012.12.064 CrossRefGoogle Scholar
- Larkin P (2011) Infrared and raman spectroscopy: principles and spectral interpretation. Elsevier, WalthamGoogle Scholar
- Mohammadi S, Shariatpanahi H, Taromi FA, Neshati J (2016) Electrochemical and anticorrosion behaviors of hybrid functionalized graphite nano-platelets/tripolyphosphate in epoxy-coated carbon steel. Mater Res Bull 80:7–22. https://doi.org/10.1016/j.materresbull.2015.06.052 CrossRefGoogle Scholar
- Moulder JF, Stickle WF, Sobol PE, Bomben KD (1992) Handbook of x-ray photoelectron spectroscopy. Perkin-Elmer Corp, Eden PrairieGoogle Scholar
- Verma C, Quraishi MA, Olasunkanmi LO, Ebenso EE (2015) L-Proline-promoted synthesis of 2-amino-4-arylquinoline-3-carbonitriles as sustainable corrosion inhibitors for mild steel in 1 M HCl: experimental and computational studies. RSC Adv 5:85417–85430. https://doi.org/10.1039/C5RA16982H CrossRefGoogle Scholar
- Verma C, Ebenso EE, Olasunkanmi LO, Quraishi MA, Obot IB (2016) Adsorption behavior of glucosamine based pyrimidine-fused heterocycles as green corrosion inhibitors for mild steel: experimental and theoretical studies. J Phys Chem C 120:11598–11611. https://doi.org/10.1021/acs.jpcc.6b04429 CrossRefGoogle Scholar