Eco-friendly Corrosion Inhibitor Research Articles

Effect of Thyme extract as an ecofriendly inhibitor for corrosion of mild steel in acidic media

AbstractNatural extracts have been widely used to protect metal materials from corrosion. Mild steel (MS) corrosion inhibition in 0.5 M sulfuric acid was investigated in the absence and presence of Thyme leaf extracts as an economical corrosion inhibitor. The effects of various concentrations and different temperatures on inhibitor efficacy were investigated. Using electrochemical impedance spectroscopy and polarization curves, the corrosion resistance of the alloy was also estimated. The polarization technique indicated that the Thyme extract is a mixed‐type inhibitor for MS in 0.5 M H2SO4. The obtained results revealed an excellent inhibition efficiency of 98% at 200 ppm of Thyme concentration. The thermodynamic parameters calculated, the effects of temperature, and the adsorption mechanism were also investigated, that suggested formation of monolayer inhibitor molecules (i.e. the Langmuir adsorption isotherm) on the metal surface. The value calculated from the Langmuir adsorption isotherm plots for inhibitor indicated that it was adsorbed on the alloy surface via a physisorption mechanism. Additional studies on plant extracts as corrosion inhibitors on metals are needed to produce solutions for industrial purposes.

Novel Cellulose Derivatives Containing Metal (Cu, Fe, Ni) Oxide Nanoparticles as Eco-Friendly Corrosion Inhibitors for C-Steel in Acidic Chloride Solutions.

Novel environmentally-friendly corrosion inhibitors based on primary aminated modified cellulose (PAC) containing nano-oxide of some metals (MONPs), for instance iron oxide nanoparticles (Fe3O4NPs), copper oxide nanoparticles (CuONPs), and nickel oxide nanoparticles (NiONPs), were successfully synthesized. The as-prepared PAC/MONPs nanocomposites were categorized using Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), field-emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and selected area diffraction pattern (SAED) techniques. The data from spectroscopy indicated that successful formation of PAC/MONPs nanocomposites, as well as the TEM images, declared the synthesized PAC/Fe3O4NPs, PAC/CuONPs, and PAC/NiONPs with regular distribution with particle size diameters of 10, 23 and 43 nm, respectively. The protection performance of the as-prepared PAC and PAC/MONPs nanocomposites on the corrosion of C-steel in molar HCl was studied by the electrochemical and weight-loss approaches. The outcomes confirmed that the protection power increased with a rise in the [inhibitor]. The protection efficiency reached 88.1, 93.2, 96.1 and 98.6% with 250 ppm of PAC/CuONP, PAC/Fe3O4NPs, and PAC/NiONPs, respectively. PAC and all PAC/MONPs nanocomposites worked as mixed-kind inhibitors and their adsorption on the C-steel interface followed the isotherm Langmuir model. The findings were reinforced by FT-IR, FE-SEM and EDX analyses.

Quantum and dynamic investigations of Complex iron- alkaloid-extract Cytisine derivatives of Retama monosperma (L.) Boiss. Seeds as eco-friendly inhibitors for Mild steel corrosion in 1M HCl

• The adsorption of Cytisine derivatives on the iron surface was modeled using DFT calculations as well as the dynamic Monte Carlo simulations. • DFT calculations were used to study the interaction of these inhibitors with iron Fe n (n=1-5). • MC and MD simulations were adopted to simulate the adsorption of Cytisine derivatives on the iron Fe (111) surface in vacuum as well as in acidic solution. • The radial distribution function (RDF), mean square displacement (MSD) and fractional free volume (FFV) were also studied using MD simulation. In this study, the adsorption of Cytisine derivatives as an eco-friendly inhibitor for mild steel corrosion [ 1 , 2 ] on the iron surface was modeled using density functional theory (DFT) calculations and the Monte Carlo (MC) as well as Molecular dynamics (MD) simulations to elucidate the interactions involved. Firstly, the interaction of these inhibitors with iron clusters Fe n (n=1-5) was studied by DFT as a representative example of a corrosion inhibition process. Moreover, structures, binding energies, partial atomic charge NBO and natural bond orbital analysis of the resulting complexes support the existence of considerable binding between these inhibitors and Fe n (n=1-5) clusters. Then, the dynamic Monte Carlo (MC) simulation was also adopted to simulate the adsorption of Cytisine derivatives on the iron Fe (111) surface in vacuum as well as in acidic solution containing 491 H 2 O, 4 hydronium ion H 3 O + and 5 chlorine ion Cl − . Besides, to advance the understanding of interactions between these molecules and iron surface, the radial distribution function (RDF), mean square displacement (MSD) and fractional free volume (FFV) were also studied in this paper. Our results of both the Fe n (n=1-4) clusters and the Fe (111) surface made it possible to show noticeable competitiveness between the three protonated inhibitors with a slight superiority for the n-CytN9H+ molecule. Furthermore, based on the diffusion coefficient we found that the three protonated inhibitors have a good capacity to slow down the movement of corrosive particles and consequently to inhibit the metallic substrate against corrosive electrolyte.

Facile preparation of new hydrazone compounds and their application for long-term corrosion inhibition of N80 steel in 15% HCl: An experimental study combined with DFTB calculations

Developing safer and environmentally responsible corrosion inhibitors is of great significance for protecting pipelines from corrosion damage during acidizing processes. It is a never-ending task for oil service companies and researchers. Herein, new hydrazone compounds, namely (E)-2-(4-isobutylphenyl)-N'-(4-methoxybenzylidene)propanehydrazide (MHDZ), and (E)-N'-(furan-2-ylmethylene)-2-(4-isobutylphenyl)propanehydrazide (FHDZ), bearing ibuprofen moiety were synthesized and investigated as green corrosion inhibitors of N80 steel in 15% HCl using chemical and electrochemical techniques complemented with field emission scanning electron microscope (FE-SEM), atomic force microscopy (AFM) and density functional tight-binding (DFTB) modeling. Results obtained showed that both hydrazones acted as effective mixed-type inhibitors, protecting the N80 steel in 15% HCl at 303 and 333 K. Inhibition efficiencies of 98.5% and 98.0% were obtained at 303 K and optimum concentrations of FHDZ and MHDZ, respectively. The anticorrosion properties of investigated hydrazones toward N80 steel dissolution were also evaluated gravimetrically at 333 K, and inhibition efficiencies of 92.3% and 90.5% were obtained in the same order at optimum concentrations. FE-SEM and AFM results proved the formation of a preventive layer on the N80 steel surface against acid corrosion. The adsorption energies computed from DFTB calculations successfully predicted the experimental inhibition performance. We have found strong covalent bond formation between inhibitor molecules and Fe-atoms, which was confirmed by the projected density of states (PDOS). This study provides an experimental and atomic understanding of the corrosion inhibition mechanisms of N80 steel by hydrazone molecules, which could open a new way to develop effective eco-friendly corrosion inhibitors for well acidization.

Evaluation of Aloe Vera Gel Extract as Eco-friendly Corrosion Inhibitor for Carbon Steel in 1.0 M HCl

The corrosion inhibition of carbon steel in 1.0 M HCl using the Aloes leaves extract has been studied. Three electrochemical different techniques have been utilized for studying the corrosion inhibition efficiency behavior of Aloe vera Gel as green corrosion inhibitor in addition to Scanning electron microscopy- Energy dispersive X-ray analysis (SEM-EDX) technique. The four techniques which are potentiodynamic polarization, Electrochemical impedance spectroscopy (EIS), Electrochemical frequency modulation (EFM) and SEM-EDX were used for evaluation at room temperature 25 ᵒC. The results show a good efficiency with low concentration of inhibitor, where the electrochemical methods show that 52 % efficiency with low concentration 100 ppm, in addition to surface morphology of carbon steel show a protected surface compared with noninhibited specimen due to formation of inhibitor layers on surface. EDX show that more concentration of chemical elements of gel extract chemical components adsorbed on inhibited specimen compared with non-inhibited specimen. The inhibition efficiency increases with the increasing of the aloe vera gel concentration.

Influence of apricot constituents as eco-friendly corrosion inhibitor for mild steel in acidic medium: A theoretical approach

The corrosion prevention mechanism of steel by apricot juice as green chemicals was better understood using molecular dynamics and quantum chemistry simulations. Furthermore, mathematical and statistical analysis were a powerful tool for building a relationship between inhibitor performance and independent variables. Eighteen main compounds of apricot juice were investigated using quantum chemical calculations. HOMO energy, LUMO energy, energy gap, chemical hardness, electrophilicity index, softness, and back donation were calculated as identifications parameters. Caffeic acid, beta-cyclocitral and gallic acid were observed as the most potent inhibitors between all the studied components. In addition, docking studies were applied to present the interactions with A.ferrooxidans bacteria that caused the corrosion. Mathematical model, with good correlation coefficient, was designed to link quantum chemical characteristics to theoretical inhibitory efficiency (%IEcal). Theoretical data were compared with experimental one (%IEexp). %IEexp was ranged from 53 to 75%, while the %IEcal was ranged from 61 to 73%.

Molecular-MD/atomic-DFT theoretical and experimental studies on the quince seed extract corrosion inhibition performance on the acidic-solution attack of mild-steel

Due to the more and more attention to environmental issues in recent years, the employment of eco-friendly corrosion inhibitors is the main topic of most studies. In this matter, the quince seed extract, which has been used for hundred years as traditional medicine was used as a new environmentally-friendly corrosion inhibitor of MS exposed to 1 M HCl solution. Characterization techniques (i.e., FT-IR and UV–Vis spectroscopies) demonstrated that there are several physical/chemical adsorption active sites in the extracted compounds. EIS results showed that after 24 h immersion of the electrode in the acid electrolyte containing 800 ppm extract, the Rp, and the Cdl increased about 95% and decreased about 87%, respectively. In addition, the PDP test results confirmed that the efficiency of the iron dissolution mitigation increased with the quince seed extract content increment and reached about 95% at 800 ppm. Furthermore, the Rp in the inhibitor-containing electrolyte (800 ppm) increased about 96% compared to the solution without the inhibitor. The electrochemical results proved the inhibitor action on both corrosion reactions (anodic (A)-cathodic (C)) control for MS in 1 M HCl and obeyed a Langmuir adsorption isotherm. In addition, the obtained adsorption free energy (ΔG˚) of –32.48 kJ/mol indicates that the GOI interaction with the MS surface was a mix of physical and chemical adsorptions. Also, the theoretical results obtained from molecular simulations (Monte Carlo, MC and Molecular Dynamics, MD) approved the adsorption of the green ingredients on the steel. The DFT calculations supported the interfacial interactions of the inhibitors through their reactive sites.

Synergetic Anticorrosion Mechanism of Main Constituents in Chinese Yam Peel for Copper in Artificial Seawater.

Active constituents of Chinese yam peel (CYPE), namely, diosgenin (DOG), batatasin-I (BTS-I), batatasin-III (BTS-III), and yam polysaccharide (Y-PS), were extracted via an ultrasonic soaking strategy. The synergetic anticorrosion mechanism among these compounds for copper in artificial seawater (ASW) was clarified by gravimetric measurements, electrochemical evaluations, surface analyses, quantum chemical calculations under a dominant solvent model, and molecular dynamics (MD) simulations. The results of weight loss revealed that CYPE strongly inhibited the corrosion of copper in ASW, and the elevating temperature boosted the anticorrosion efficacy of CYPE. The inhibition efficiency could attain 96.33% with 900 mg/L CYPE in ASW at 298 K due to effective adsorption. CYPE simultaneously suppressed the anodic and cathodic reactions for copper in ASW, which could be categorized as the mixed-type corrosion inhibitor with the predominant anodic effect. Similar electrochemical kinetics was evidenced by electrochemical frequency modulation (EFM). Electrochemical impedance spectroscopy (EIS) indicated that CYPE prominently increased the charge-transfer resistance at the copper/electrolyte interface without altering the corrosion mechanism. Extending the immersion time was also conducive for CYPE to further minimize the corrosion of copper in ASW, which was demonstrated by the time-course polarization, EIS, and EFM tests. Owing to the adsorption of CYPE, the copper surface was well-protected and showed reduced wettability and limited variation of roughness. From the outcomes of quantum chemical calculations, global and local reactive descriptors of DOG implied the cross-linked deposition of actually formed dioscin on the copper surface; otherwise, those of BTS-I/-III showed the propensity for parallel adsorption, which could chemically anchor on the voids uncovered by dioscin and thereby synergistically inhibit the corrosion process. The adsorption orientations of DOG, BTS-I, and BTS-III were also consolidated by MD simulations. The findings of this study might be beneficial to inspire the development of eco-friendly corrosion inhibitors from plant wastes for copper in marine environments.

Rosin imidazoline as an eco-friendly corrosion inhibitor for the carbon steel in CO2-containing solution and its synergistic effect with thiourea

Rosin is known as an eco-friendly raw material from natural plants. The main component of rosin is abietic acid. Abietic acid has a carboxyl and a tricyclic phenanthrene skeleton in which conjugated double bonds are present. Conjugation structure will lead to local enrichment of electrons, thereby creating sites that can be used for adsorption. In this case, it is expected that a better performance could be obtained if an inhibitor is synthesized from rosin. In this work, rosin was used to synthesize an imidazoline derivative as a corrosion inhibitor, then the corrosion inhibition performance and synergistic effect with thiourea (TU) of rosin imidazoline (RI) for carbon steel in test solution were studied using weight loss measurement, electrochemical techniques and surface characterization. The results show that the inhibition efficiency of RI reaches 83.8% at 200 mg/L. A further increase in RI concentration does not effectively improve the inhibition performance since the critical micelle concentration of RI is present at around 200 mg/L. The molecular characteristics of RI was analyzed by quantum chemical calculations. It clearly shows that multiple adsorption sites exists in the RI molecular structure, hence RI could offer a good inhibition performance. With the compounding of 200 mg/L RI and 10 mg/L TU, the inhibition efficiency could increase as high as 89.8%, demonstrating a good synergistic effect between RI and TU. The corresponding synergistic mechanisms are also proposed.

β-cyclodextrin modified xanthan gum as an eco-friendly corrosion inhibitor for L80 steel in 1 M HCl

β-cyclodextrin modified xanthan gum as an eco-friendly corrosion inhibitor for L80 steel in 1 M HCl

Syzygium cumini leaf extract as an eco-friendly corrosion inhibitor for carbon steel in acidic medium

The efficiency of Syzygium cumini leaf extract (SCLE) as a corrosion inhibitor was evaluated for carbon steel in 0.5 mol L−1 H2SO4 by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) measurements. It was clearly demonstrated that the inhibition efficiency increased with increasing concentration of leaf extract, due to a decrease in the cathodic currents and blocking of the active corroding sites. The presence of organic molecules from the SCLE on the carbon steel surface was confirmed by FT-IR spectroscopy. The adsorption of species on the alloy surface was modeled using the Langmuir isotherm. A decrease in the carbon steel acid corrosion in the presence of SCLE was also confirmed through contact angle measurements and scanning electron microscopy (SEM).

Dysphania ambrosioides Essential Oil: An Eco-friendly Inhibitor for Mild Steel Corrosion in Hydrochloric and Sulfuric Acid Medium

Dysphania ambrosioides Essential Oil: An Eco-friendly Inhibitor for Mild Steel Corrosion in Hydrochloric and Sulfuric Acid Medium

Amino-Functionalized MXene Nanosheets Doped with Ce(III) as Potent Nanocontainers toward Self-Healing Epoxy Nanocomposite Coating for Corrosion Protection of Mild Steel.

MXene sheets, as new 2D nanomaterials, have been used in many advanced applications due to their superior thin-layered architecture, as well as their capability to be employed as novel nanocontainers for advanced applications. In this research, intercalated Ti3C2 MXene sheets were synthesized through an etching method, and then they were modified with 3-aminopropyltriethoxysilane (APTES). Cerium cations (Ce3+) as an eco-friendly corrosion inhibitor were encapsulated within Ti3C2 MXene sheets to fabricate novel self-healing epoxy nanocomposite coatings. The corrosion protection performance (CPP) of Ce3+-doped Ti3C2 MXene nanosheets (Ti3C2 MXene-Ce3+) in a 3.5 wt % sodium chloride (NaCl) solution was studied on bare mild steel substrates using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. The self-healing CPP of epoxy coatings loaded with 1 wt % undoped and doped Ti3C2 MXene was evaluated using EIS, salt spray, and field emission scanning electron microscopy (FE-SEM) techniques. The introduction of Ti3C2 MXene-Ce3+ into the corrosive solution and artificially scribed epoxy coating enhanced the total impedance from 717 to 6596 Ω cm2 and 8876 to 32092 Ω cm2, respectively, after 24 h of immersion compared to the control samples.

Novel cationic Gemini ester surfactant as an efficient and eco-friendly corrosion inhibitor for carbon steel in HCl solution

The corrosion inhibition behaviors of a cationic gemini surfactant with hydrolyzable ester groups in its C18 tails from natural palmitic acid were tested for carbon steel in 1.0 M HCl solution. The synergistic effect of the eco-friendly gemini ester surfactant with salt additives was explored. The corrosion inhibition efficiency was determined by weight loss measurement, potentiodynamic polarization and electrochemical impedance spectroscopy. The gemini ester surfactant exhibited high inhibition efficiency (94.5% at the concentration of 6.9 × 10-5 M). Synergistic inhibition effect was observed between the surfactant and the salt additives, with the maximum corrosion inhibition efficiency as high as ~98.4%. The surfactant acted as a mixed type inhibitor with predominant inhibition of cathodic reactions. The adsorption behavior obeyed the Langmuir isotherm model with chemisorption between the inhibitor and carbon steel. Quantum chemical modeling indicates the formation of coordinate bonds between the surfactant and the metal surface. Surface analysis using SEM/EDS, AFM and water contact angle measurements confirmed the high effectiveness of the gemini ester surfactant on the protection of carbon steel in HCl solution, and the synergistic effect on corrosion inhibition between the surfactant and sodium salicylate was verified intuitively.

Experimental and theoretical studies of Inula viscosa extract as a novel eco-friendly corrosion inhibitor for carbon steel in 1 M HCl

In the present study, the extract of Inula viscosa leaves (IVE) was used as an environmentally-friendly and green corrosion inhibitor for X70 carbon steel in 1 M HCl. The experimental results were endorsed by computational approaches. The corrosion inhibition effect of the extract was investigated by weight loss measurements, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Besides the surface characterization by SEM/EDS (scanning electron microscopy/energy dispersive X-ray spectroscopy) and AFM (atomic force microscopy), the mechanism of inhibition was assessed through FTIR and UV/Vis studies. The results of weight loss measurements and electrochemical experiments showed that IVE was an excellent corrosion inhibitor, as the corrosion inhibition efficiency was found to increase with the concentration of plant extract and exceeded 92% at a concentration of 600 mg L−1. This excellent inhibitory efficiency was attributed to the efficient adsorption of this green inhibitor onto the steel surface and its mixed-type behavior; the adsorption data were fitted to the Langmuir isothermal model. The studies at an optimum concentration and for an immersion time of 120 h revealed the stability of adsorbed inhibitor layer on the X70 surface in acidic media. The success of the adsorption was confirmed by analysis of the organic protective film formed by SEM/EDS and FTIR tools. AFM showed a significant reduction of surface roughness of the susbtrate in the presence of IVE. Moreover, the adsorption-inhibition relationship was discussed in light of the quantum chemical parameters calculated for the main components of the plant extract using the density functional theory (DFT).

Adsorption of Gardenia jasminoides fruits extract on the interface of Cu/H2SO4 to inhibit Cu corrosion: Experimental and theoretical studies

An eco-friendly corrosion inhibitor is a target pursued by many corrosion researchers all the time. In this work, we studied the protective effect of Gardenia jasminoides fruits extract (GFE) for copper in 0.5 mol∙L─1 H2SO4 dependence upon multifarious tests and methods. It is obtained in electrochemical measurements that the maximum inhibition efficiency (η) of GFE exceeds 90% at different temperatures and η of 400 mg/L GFE is almost 93% at 298 K. The most appropriate model of GFE sorbing on Cu surface belongs to Langmuir adsorption. Both Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) demonstrates the bonding information. It is perceived that GFE is brilliantly capable of safeguarding Cu from eroding by the corrosion particles adopting scanning electron microscopy (SEM) method and atomic force microscopy (AFM). The anti-corrosion mechanism is further interpreted and comprehended utilizing quantum chemistry calculation and molecular dynamics simulation analysis.

Dithiocarbamate modified glucose as a novel eco-friendly corrosion inhibitor for copper in sodium chloride media

A novel eco-friendly corrosion inhibitor named dithiocarbamate modified glucose (DTCG) was synthesized from glucose by amination and nucleophilic addition reaction. The anti-corrosion behavior of DTCG for copper in 3 wt% NaCl solution was studied by experimental and theoretical methods. The results show that its maximum inhibitive efficiency can exceed 96% using different technology assessments. DTCG as a mixed-type inhibitor is firmly adsorbed on the copper surface and presents typical chemisorption. DTCG shows significant anti-corrosion performance compared with other glucose-based inhibitors. The DFT calculation results confirms the experimental conclusions.

Solvothermal synthesis of functionalized carbon dots from amino acid as an eco-friendly corrosion inhibitor for copper in sulfuric acid solution

In this work, novel N-doped carbon dots (N-CDs) were synthesized from citric acid and l-serine. The results of fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) show that there are many unsaturated bonds and polar groups in the N-CDs. The inhibition performance of the concerned zero-dimensional nanomaterial for copper was investigated by electrochemical, combining FT-IR, XPS and Raman to investigate the corrosion products. Results indicate that the N-CDs were found to be effective inhibitor with the suppression efficiency as high as 98.5% means after immersed for 24 h, and they interacted with copper substrate by chemical & physical adsorption. Moreover, the related anticorrosion mechanism was explored and elucidated in detail. The purpose of this work is to explore eco-friendly and efficient corrosion inhibitor materials for metal protection.

Role of Organic and Eco-Friendly Inhibitors on the Corrosion Mitigation of Steel in Acidic Environments-A State-of-Art Review.

Steel has versatile application in chemical, structure and construction industries owing to its mechanical properties. However, it is susceptible to corrosion in acid environments. Thus, it requires to protect the steel from corrosion. Different types of corrosion resistance steel, coatings and inhibitors are developed to mitigate the corrosion, but, inhibitor is the best remedies to control the corrosion of steel in acid condition. Moreover, organic and green inhibitors used in acid condition for descaling, acid pickling, pipelines, boiler tubes and oil-wells. Organic inhibitors reduce the dissolution of steel in acid but, it is hazardous, expensive and needs expertise to synthesize the inhibitor. Therefore, there is utmost required to study and compile the latest research about the eco-friendly corrosion inhibitors, which showed more than 90% corrosion inhibition efficiency. In the present study, I have reviewed the state-of-arts, and compile the latest development in organic and eco-friendly corrosion inhibitor used in acid environment as well as suggested about the future scope and role of green inhibitor for sustainable society, which is economical, less hazardous and readily available from the natural sources.

The study of m-pentadecylphenol on the inhibition of mild steel corrosion in 1 M HCl solution

The acidic fluids used in the acidification of oil wells provoke corrosion of metallic materials unenviably. As a consequence, corrosion inhibitors are needed to mitigate or retard the corrosion process. Herein, we report m-pentadecylphenol as an eco-friendly corrosion inhibitor in acidic media developed from cashew nut shell liquid (CNSL), which is a low-cost and sustainable source. The inhibitor was evaluated as corrosion inhibitor for mild in 1 M HCl corrosive solution by potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), weight loss, Fourier transform infrared (FT-IR) spectroscopy, atomic force microscopy (AFM), and energy-dispersive X-ray fluorescence (EDX-RF) spectrometry methods. The results showed that the inhibition efficiency of m-pentadecylphenol was at least 95% at an optimal concentration (300 ppm). The inhibition efficiency was found to increase as the inhibitor concentration increments from 100 to 300 ppm. Further studies revealed the inhibition performance of m-pentadecylphenol to be marginally reliant on temperature as the temperature rises from 303 to 333 K. At 333 K, the inhibition performance of the inhibitor was still promising (about 85%) when the concentration was 300 ppm. The adsorption studies revealed the spontaneous aptitude of m-pentadecylphenol to inhibit corrosion by forming a non-conductive inhibitive layer on the mild steel surface mainly through the chemisorption mechanism. The chemisorption adsorption was satisfactorily described by the Langmuir adsorption isotherm model. Besides, the potentiodynamic polarization measurements revealed m-pentadecylphenol to act as an anodic inhibitor. The overall findings revealed that m-pentadecylphenol to be an effective corrosion inhibitor in harsh corrosive vicinities with the added advantages of being eco-friendly and relatively cheaper. Thus, it can replace the use of non-green and expensive corrosion inhibitors in the industry.