Evaluation of the corrosion inhibition efficacy of Cola acuminata extract for low carbon steel in simulated acid pickling environment

Mohammed, A. I.; Solomon, Moses M.; Haruna, Kabiru; Umoren, Savıour A.; Saleh, Tawfik A.

doi:10.1007/s11356-020-09636-w

Cited by 35 publications

(13 citation statements)

References 115 publications

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“…Tea tree extract successfully inhibited the corrosion of MS and STS specimens in 1 M HCl solution, as follows from the results of the weight loss test, electrochemical polarization measurement, SEM, and LSCM ( Section 3.1 and Section 3.2 ). The corrosion inhibition behavior of organic materials is attributed to the protective layer formed by its adsorption phenomenon on the steel surface in corrosive solution [ 7 , 13 , 23 , 24 ]. This layer prevents the interaction between the corrosive ions (i.e., chlorides ions) and the steel surface by acting as the physical barrier.…”

Section: Resultsmentioning

confidence: 99%

“…The main constituents of tea tree extract, α-terpineol, 1,8-cineole and terpinen-4-ol, were observed by FTIR ( Figure 7 a–d). A broad peak around 3300 cm −1 observed in α-terpineol and terpinen-4-ol indicates the O–H bond stretching vibration [ 13 , 24 , 25 ]. The C–H stretching of an alkyl or alkenyl group gives an absorption in the 2800–3000 cm −1 range [ 20 , 26 ].…”

Section: Resultsmentioning

confidence: 99%

“…The C–H stretching of an alkyl or alkenyl group gives an absorption in the 2800–3000 cm −1 range [ 20 , 26 ]. The C–H bendings of an alkyl group and an alkenyl group occur in the 1300–1500 cm −1 [ 24 , 25 , 26 , 27 ] and 700–900 cm −1 ranges [ 7 , 26 ], respectively. Absorption peaks in the 1000–1300 cm −1 range are associated with the C–O stretching vibrations [ 7 , 13 , 26 , 27 ].…”

Section: Resultsmentioning

confidence: 99%

“…A notable change in Figure 7e was the weakening of relative intensity for the O-H vibration peak compared to the original tea tree extract and other constituents (Figure 5a,b,d). The constituents of tea tree extract such as α-terpineol and terpinen-4-ol are believed to be adsorbed through chemical interactions between their hydroxyl (O-H) group and the steel surface [7,13,24]. The FTIR spectrum was analyzed from the surface of the STS specimen after the immersion test in 1 M HCl solution containing tea tree extract (Figure 7e).…”

Section: Ftirmentioning

confidence: 99%

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Corrosion Inhibition of Mild Steel and 304 Stainless Steel in 1 M Hydrochloric Acid Solution by Tea Tree Extract and Its Main Constituents

2021

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Tea tree extract, containing antioxidant constituents α-terpineol, terpinen-4-ol, and α-terpinene, has a wide range of applications in the cosmetic, food, and pharmaceutical industries. In this study, tea tree extract showed an anticorrosive effect under 1 M HCl solution on mild steel (MS) and 304 stainless steel (STS). Uniform corrosion for MS and pitting corrosion for STS at 298 K were retarded, with inhibition efficiencies of 77% and 86%, respectively. The inhibition of uniform and pitting corrosion was confirmed by scanning electron microscopy and laser scanning confocal microscopy in terms of surface roughness and pitting morphologies. The most effective constituent contributing to the inhibitory performance of tea tree extract was revealed to be α-terpineol, with an inhibition efficiency of 83%. The adsorption of tea tree extract was confirmed by surface characterization analysis using Fourier transform infrared spectroscopy, Raman spectroscopy, and Electrochemical impedance spectroscopy. Interestingly, G- and D-peaks of Raman spectra were detected from the inhibited steels, and this finding is the first example in the corrosion inhibition field. The anticorrosion mechanism can be explained by the formation of organic-Fe complexes on the corroded steel surface via electron donor and acceptor interactions in the presence of an oxygen atom of the hydroxyl group or ether of organic inhibitors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Ftirmentioning

confidence: 99%

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Corrosion Inhibition of Mild Steel and 304 Stainless Steel in 1 M Hydrochloric Acid Solution by Tea Tree Extract and Its Main Constituents

2021

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“…Compared with the bare sample, the as‐processed sample has higher corrosion potential and lower corrosion current density, thus exhibiting superior corrosion resistance. [ 30,31 ] In addition, corrosion inhibition rate (IE) is used to characterize corrosion resistance of Al alloy according to the following formula [ 32 ] :

IE = \frac{I_{a} - I_{b}}{I_{normala}},

where I a and I b , respectively, represent corrosion current densities of samples before and after electrochemical etching treatment. IE indicates that corrosion resistance is increased by 95.20% after electrochemical etching treatment.…”

Section: Resultsmentioning

confidence: 99%

One‐step preparation of the superhydrophobic Al alloy surface with enhanced corrosion and wear resistance

Tian

Zhang

et al. 2020

Materials & Corrosion

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Corrosion and wear failures are bottlenecks for restricting applications and developments of Al‐based functional materials. As a new lubrication technology, superhydrophobic preparation provides an effective way to settle Al alloy corrosion. The preparation methods of superhydrophobic Al alloys are mainly multistep strategies. In this study, superhydrophobic Al alloy, has been prepared by an efficient one‐step electrochemical etching process. Meanwhile, its micromorphology has been observed by a scanning electron microscope. The wettability has been measured by video optical contact angle meter. The corrosion behavior has been tested by electrochemical workstation, and wear performance has been characterized by friction tester. The results show that the micro‐nanoterraced concave–convex structure has been fabricated and an as‐prepared surface exhibits excellent superhydrophobic behavior. Further electrochemical and tribological tests show that corrosion resistance and wear resistance have also been significantly improved. This study provides a new method to prepare wear‐resistant and corrosion‐resistant Al alloy for widening applications of multifunctional Al‐based engineering materials.

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8‐Hydroxyquinoline‐functionalized chitosan Schiff base as an efficient and environmentally friendly corrosion inhibitor for N80 steel in acidic environments

et al. 2023

J of Applied Polymer Sci

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Chitosan is an environmentally friendly biomolecule with great potential for application in metal corrosion protection. First, Chitosan benzaldehyde schiff base (CTSB) and 8‐hydroxyquinoline functionalized chitosan benzaldehyde schiff base (HQ‐CTSB) were synthesized from chitosan, benzaldehyde, and 8‐hydroxyquinoline as high‐efficiency and environment‐friendly corrosion inhibitors. The structures of the synthesized products were characterized by infrared spectroscopy. The corrosion of N80 steel was tested using electrochemical measurements and analysis by varied concentrations of CTSB and HQ‐CTSB in a hydrochloric acid solution. The PDP results confirmed that both CTSB and HQ‐CTSB corrosion inhibitors were mixed corrosion inhibitors. Furthermore, the EIS findings revealed that the corrosion inhibition efficiency of the two inhibitors was 87.11% and 98.52% at 800 mg/L, respectively. According to SEM and XPS analyses, the CTSB and HQ‐CTSB molecules bonded to the surface of N80 steel and formed a surface protective layer. Density functional theory (DFT) calculations showed that CTSB and HQ‐CTSB have multiple active sites that may become adsorbent on the metal surface. And molecular dynamics (MD) simulations showed that corrosion inhibitors CTSB and HQ‐CTSB lie flat on the surface of Fe(110). The theoretical calculation agreed well with the experimental results.

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Evaluation of the corrosion inhibition efficacy of Cola acuminata extract for low carbon steel in simulated acid pickling environment

Cited by 35 publications

References 115 publications

Corrosion Inhibition of Mild Steel and 304 Stainless Steel in 1 M Hydrochloric Acid Solution by Tea Tree Extract and Its Main Constituents

Corrosion Inhibition of Mild Steel and 304 Stainless Steel in 1 M Hydrochloric Acid Solution by Tea Tree Extract and Its Main Constituents

One‐step preparation of the superhydrophobic Al alloy surface with enhanced corrosion and wear resistance

8‐Hydroxyquinoline‐functionalized chitosan Schiff base as an efficient and environmentally friendly corrosion inhibitor for N80 steel in acidic environments

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