Natural Products for Material Protection: An Interesting and Efficacious Anticorrosive Property of Dry Arecanut Seed Extract at Electrode (Aluminum)–Electrolyte (Hydrochloric Acid) Interface

Abstract

The inhibitory propensity of dry arecanut seed (DAS) extract was tested on aluminum metal in 0.5 M HCl media through weight loss, electrochemical, and probe techniques. Weight loss studies exhibited the anticorrosive effect of DAS extract constituents on the aluminum metal surface, protection efficiency, increased with an increase in the DAS extract concentration and subdued as the contact time lengthened. Inhibitive effect was afforded by adsorption of the DAS extract components which was approximated by proper Langmuir isotherm fit. The activation energy of aluminum corrosion and other thermodynamic functions were determined to corroborate the experimental findings and provide adequate insight into the aluminum corrosion inhibition mechanism. Inhibitive modality of the most potent inhibitor (DAS extract) was interpreted in detail through potentiodynamic polarization technique (Tafel plot). The impedance spectroscopy approach may well be able to foretell the formation of a persistent passive layer at the aluminum-acid interface that impedes the access of corrosive ions to the surface of aluminum. Surface analysis rationalized via atomic force microscopy technique manifested the absence of corrosion products and topographic modifications on the aluminum surface. The amorphous/crystalline nature of the inhibitor (DAS extract constituents) molecules adsorbed onto the aluminum surface was indicated by powder X-ray diffraction technique. Protection efficiency values obtained by all techniques were complied with each other.

Enhanced Corrosion Resistance of Carbon Steel in Hydrochloric Acid Solution by Polyoxometalate-Estertin Derivatives

“…This indicates that the corrosion reaction process needs to overcome a higher energy barrier in the presence of inhibitors, which form an adsorption film covering the 20 # carbon steel surface, thus slowing down the corrosion rate. 11 Moreover, the activation enthalpy (ΔH) and activation entropy (ΔS) were attained using the transition state equation (eq 5): 9…”

“…For instance, ionic liquids (ILs) have shown their outstanding performance in corrosion inhibition of steels in the acidic environment owing to many attractive characteristics such as high stability, high solubility, and low environmental hazards, although they suffer from the high production cost sometimes. , Moreover, plant extract corrosion inhibitors have been widely studied as green corrosion inhibitors owing to their high inhibition efficiency, chemical stability, and environmental friendliness. However, their application is limited by the difficulty of separation. − In recent years, intelligent corrosion inhibitors with pH responsivity, self-assembly, and self-healing properties have attracted more and more attention of scientists. − Despite the above achievements, the development of new sustainable, environmentally friendly, and highly efficient corrosion inhibitors in acidic media is still an important topic in metal protection.…”

Biogenic Synthesis of NiO Nanoparticles Using Areca catechu Leaf Extract and Their Antidiabetic and Cytotoxic Effects

“…Plants are known for their medicinal values in terms easier availability and large number of biologically active components. A. catechu is one of the known fruit plants belonging to the Palmaceae family and is cultivated in most Asian countries [ 18 ]. Medicinal properties of this plant’s extracts are due to the presence of various phytochemicals that are present in the different parts of the plant [ 19 ].…”

Newbouldia laevis Leaves Extract as Tenable Eco-Friendly Corrosion Inhibitor for Aluminium Alloy AA7075-T7351 in 1 M HCl Corrosive Environment: Gravimetric, Electrochemical and Thermodynamic Studies

“…Psidium Guajava seeds extract in HCl solution had been used to investigate the corrosion properties of aluminium with favorable results [25]. Other native flora used in the study of the corrosion behaviour of aluminium in acidic environment, with similarly good outcomes include: dry arecanut seed extract in 0.5 M HCl [29]; Trigonellafoenum-graecum L. seed extracts in 1 M HCl [30]; Lupine extract in 0.1 M HCl, 0.1 M HClO 4 and 0.05 M H 2 SO 4 [31] etc.…”