Effects of Neem Seed and Wire Croton Extracts on Mild Steel in Salt and Fresh Water Media Using Electrochemical – SEM – GCMS and FTIR
Year: 2026
Type: article
Abstract: Corrosion inhibition of mild steel remains a major challenge in industrial and environmental systems, necessitating the development of effective, economical, and environmentally sustainable corrosion inhibitors. Thus, plant extracts from neem seed and wire ccroton were prepared using standard extraction techniques and characterized, confirming the presence of key phytochemical constituents from both neem seed and wire croton plant extracts in the GC/MS analysis of Cembranoid (over 11.95%), Labdanes (over 15.48%), Hexadecanoic acid Ethylester over (11.41%), 1,2,4-Trithiolane,3,5-diethyl (over 9.36%) and Methyl,8-Methyl-nonanoate for Wire Croton while Azadirone (over 18.54%), 2-Furancarboxaldehyde (over 11.13), Meliantriol (over 10.89%), Epoxyazadiradione (over 9.67%), Ammonium acetate (over 9.54%), Salannol (over 9.42%), for Neem Seed. The plant extracts were characterized for FT-IR, EIS and SEM EDX result with neem seed extract exhibiting relatively higher concentrations of active components. Scanning electron microscopy was used to characterize the surface morphology of uninhibited and inhibited mild steel specimens and the results show a remarkable inhibition of the corrosion process in the presence of the inhibitor. Analysis of the peaks of Fourier Transform-Infrared Spectrum (FT-IR) of the inhibitors indicated presence of functional groups containing Phosphorus, Oxygen, Nitrogen, -OH and -COOH while the peaks of the Gas Chromatography – Mass Spectrometry (GC-MS) analysis is in agreement with the results of the FT-IR and indicate the presence of corrosion inhibiting compound such as Terpenes, Tannin, Alkaloid, Flavonoid and Phytate in different appreciable concentrations.
Author: Lewis Sunday Unya
Institution: Rivers State University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7220863282
