Citrus sinensis Extract as a Green Inhibitor for the Corrosion of Carbon Steel in Sulphuric Acid Solution

Citrus sinensis extract is considered a good inhibitor to protect the carbon steel in half of molar of sulfuric acid from corrosion, as it was found from the results of chemical methods such as the weight loss (ML) method and also from the results of electrochemical methods such as potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM). The polarization curves indicated that this extract acts as a mixed kind inhibitor. The adsorption of this extract on the carbon steel surface is of mixed type physisorption and chemisorption, but chemisorption is the most effective one and followed Temkin adsorption isotherm. Several tests have proved a layer that protects carbon steel from corrosion.

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Some Thiophene Derivatives as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid

Journal of Metallurgy ◽

10.1155/2014/472040 ◽

2014 ◽

Vol 2014 ◽

pp. 1-15 ◽

Cited By ~ 7

Author(s):

A. S. Fouda ◽

A. A. Attia ◽

A. A. Negm

Keyword(s):

Weight Loss ◽

Carbon Steel ◽

Potentiodynamic Polarization ◽

Steel Surface ◽

Electrochemical Impedance ◽

Electrochemical Techniques ◽

Effect Of Temperature ◽

Carbon Steel Surface ◽

Weight Loss Method ◽

Thiophene Derivatives

Corrosion inhibitive performance of some thiophene derivatives during the acidic corrosion of carbon steel surface in 1 M HCl was investigated by chemical technique (weight loss) and electrochemical techniques (potentiodynamic polarization, electrochemical frequency modulation, and electrochemical impedance spectroscopy). The effect of temperature on the corrosion rate was investigated by the weight loss method, and some thermodynamic parameters for corrosion and adsorption processes were determined and discussed. The results show that the inhibition efficiency increased with the increase in inhibitor concentration and temperature. The adsorption of thiophene derivatives on the carbon steel surface obeys Langmuir adsorption isotherm. The obtained results indicated that the investigated compounds are chemically adsorbed on the steel surface. Potentiodynamic polarization studies showed that these compounds are mixed-type inhibitors and the results obtained from the techniques are in good agreement.

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Corrosion inhibition, surface adsorption and computational studies of Momordica charantia extract: a sustainable and green approach

SN Applied Sciences ◽

10.1007/s42452-020-04079-x ◽

2021 ◽

Vol 3 (1) ◽

Author(s):

Rajesh Haldhar ◽

Dwarika Prasad ◽

Divya Kamboj ◽

Savas Kaya ◽

Omar Dagdag ◽

...

Keyword(s):

Carbon Steel ◽

Steel Surface ◽

Electrochemical Impedance ◽

Spectroscopic Technique ◽

Momordica Charantia ◽

Green Approach ◽

Carbon Steel Surface ◽

Weight Loss Method ◽

Loss Method ◽

Inhibitory Molecules

AbstractThe aerial parts extract of Momordica charantia plant were used for the corrosion resistance of carbon steel in the acidic medium (0.5 M H2SO4) utilizing weight loss method, Tafel and Electrochemical Impedance Spectroscopy. The state of mixed inhibitor adsorption on the carbon steel surface is shown by potentiodynamic polarization. M. charantia achieved the extraordinary inhibition efficiency of 93.51% at 500 mg/L of inhibitor concentration. Scanning electron microscopy and atomic force microscopy were used to know about the thin layer which was formed on the surface of carbon steel for its protection from corrosion and the adsorption of inhibitor was shown by UV–vis. spectroscopic technique. Fourier Transform Infrared Spectroscopy technique confirmed the existence of functional groups and the heteroatoms exhibit in the inhibitor. Adsorbance by the inhibitory molecules on the carbon steel surface followed the Langmuir adsorption isotherm. Hypothetical investigations (computational) showed a very valuable report. All acquired outcomes ensure that M. charantia extract can procedure an effectual preventing layer and restrict the corrosion procedure.

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The Inhibitive Effect of 2-Phenyl-3-nitroso-imidazo [1, 2-a]pyridine on the Corrosion of Steel in 0.5 M HCl Acid Solution

E-Journal of Chemistry ◽

10.1155/2010/525606 ◽

2010 ◽

Vol 7 (s1) ◽

pp. S35-S42 ◽

Cited By ~ 5

Author(s):

K. Bouhrira ◽

F. Ouahiba ◽

D. Zerouali ◽

B. Hammouti ◽

M. Zertoubi ◽

...

Keyword(s):

Carbon Steel ◽

Steel Surface ◽

Inhibition Efficiency ◽

Electrochemical Impedance ◽

Electrochemical Techniques ◽

Carbon Steel Surface ◽

Langmuir Isotherm Model ◽

Corrosion Of Steel ◽

Good Agreement

The effect of 2-phenyl-3-nitroso-imidazo[1,2-a]pyridine (PNIP) on the corrosion inhibition of carbon-steel in 0.5 M HCl was studied by weight loss and different electrochemical techniques such as electrochemical impedance spectroscopy (EIS), potentiodynamic polarization. The obtained results showed that PNIP effectively reduces the corrosion rate of carbon steel. Inhibition efficiency (E%) increases with inhibitor concentration to attain 88% at 10-3M. Adsorption of that PNIP on the carbon steel surface in 0.5 M HCl follows the Langmuir isotherm model. E% values obtained from various methods used are in good agreement. SEM characterization of the steel surface is made.

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Inhibition of [NH2Et2][(4-MeC6H4O)2PS2] for Carbon Steel in Hydrochloric Acid Solution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.716 ◽

2011 ◽

Vol 239-242 ◽

pp. 716-719

Author(s):

Zhen Xiang ◽

Xue Yang ◽

Bin Xie ◽

Li Ke Zou ◽

Yang Guang Xiang ◽

...

Keyword(s):

Weight Loss ◽

Carbon Steel ◽

Mixed Type ◽

Steel Surface ◽

Standard Free Energy ◽

Free Energy Of Adsorption ◽

Inhibition Effect ◽

Carbon Steel Surface ◽

Hcl Solution ◽

Mixed Type Inhibitor

The inhibition effect of N,N-diethylammonium O,O'-di(4-Methylpheny)dithiophosphate (NOPP, [NH2Et2][(4-MeC6H4O)2PS2])against the corrosion of carbon steel in HCl solution was studied by weight loss measurements, electrochemical measurements, AFM and SEM techniques. The studies of weight loss measurements indicate that the NOPP acts as a good inhibitor for the corrosion of carbon steel in HCl solution. Polarization curves indicate NOPP is a mixed-type inhibitor. The adsorption of NOPP on carbon steel surface obeys the Langmuir isotherm, and the obtained standard free energy of adsorption suggests that the chemisorption takes place spontaneously.

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Synthesis of ZnO-NPs Using a Convolvulus arvensis Leaf Extract and Proving Its Efficiency as an Inhibitor of Carbon Steel Corrosion

Materials ◽

10.3390/ma13040890 ◽

2020 ◽

Vol 13 (4) ◽

pp. 890

Author(s):

Ghadah M. Al-Senani

Keyword(s):

Carbon Steel ◽

Steel Surface ◽

Electrochemical Impedance ◽

Steel Corrosion ◽

Protective Film ◽

Convolvulus Arvensis ◽

Zno Nps ◽

Transfer Resistance ◽

Carbon Steel Surface ◽

Vis Spectroscopy

This paper studies the use of zinc oxide nanoparticles (ZnO-NPs) synthesized using an extract of Convolvulus arvensis leaf and expired ZnCl2, as efficient inhibitors of carbon steel corrosion in a 1 M HCl solution. The synthesized ZnO-NPs were characterized by Fourier-transform infrared (FTIR) and UV-Vis spectroscopy analysis. The corrosion inhibition of carbon steel in 1 M HCl was also investigated through potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and the determination of weight loss. The results show that the efficiency of the prevention increased when the concentration of ZnO-NPs was increased to 91%, and that the inhibition efficiency was still high (more than 89%) despite decreasing at high temperatures, acting as a mixed-type inhibitor. A sample of carbon steel with a protective layer of inhibitor on top was observed during immersion in 1 M HCl for 20 h; an increase in the charge transfer resistance (Rct) and stability of the inhibitor could be observed after 6 h. Adsorption isotherm models demonstrated that the inhibitor adsorption mechanism on the carbon steel surface followed Langmuir rather than Freundlich and Temkin behaviors. The thermodynamic parameters showed that the adsorption process is one of mixed, spontaneous, and exothermic adsorption. The results illustrate that the ZnO-NPs were a strong inhibitor of carbon steel corrosion in acid medium. The results of scanning electron microscopy (SEM) images showed that the ZnO-NPs formed a good protective film on the carbon steel surface.

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Investigation of 4-Methoxysalicylaldehyde Thiosemicarbazone as Inhibitor for Carbon Steel in Sulfuric Acid Solution

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.633-634.513 ◽

2014 ◽

Vol 633-634 ◽

pp. 513-516

Author(s):

Hong Hong Zhang ◽

Yan Zhang ◽

Zhong Nian Yang

Keyword(s):

Weight Loss ◽

Schiff Base ◽

Carbon Steel ◽

Steel Surface ◽

Electrochemical Impedance ◽

Langmuir Adsorption Isotherm ◽

Inhibition Effect ◽

Langmuir Adsorption ◽

Carbon Steel Surface ◽

Eis Measurements

The Schiff base 4-methoxysalicylaldehyde thiosemicarbazone (MST) was synthesized and its corrosion inhibition effect on carbon steel in 0.5 M H2SO4 solution was tested via weight loss and electrochemical impedance spectroscopy (EIS) measurements. The results show that MST serves as an effective corrosion inhibitor for carbon steel. The corrosion rate of carbon steel decreases with the increase in concentration of MST. The adsorption of MST on the carbon steel surface conforms to the Langmuir adsorption isotherm.

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Gravimetric, electrochemical and surface study on the good’s buffer ionic liquid as corrosion inhibitor for carbon steel in acidic medium

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.13.1.2019.07.0377 ◽

2019 ◽

Vol 13 (1) ◽

pp. 4434-4448

Author(s):

R. Nanthini ◽

M. I. Mutalib

Keyword(s):

Carbon Steel ◽

Corrosion Inhibitor ◽

Potentiodynamic Polarization ◽

Steel Surface ◽

Electrochemical Impedance ◽

Scanning Electron Micrographs ◽

Inhibitor Molecule ◽

Gravimetric Measurements ◽

Carbon Steel Surface ◽

Inhibition Performance

This corrosion study assessed the inhibition performance of carbon steel in 1 M of hydrochloric acid (HCl) using Good’s buffer ionic liquids (GBIL) namely 1-Butyl-3-methylimidazolium 2-(N-Morpholino) propane, [BMIM][MOPS] using electrochemical impedance, potentiodynamic polarization, and weight loss (gravimetric) measurements. GBIL are synthesized by the combination of Good's buffer as anion and various organic bases as the cation. The gravimetric measurements exhibit higher reduction in weight for carbon steel exposed to the acidic environment in the absence of corrosion inhibitor (CI) as compared to carbon steel immersed in the presence of inhibitor molecule. Potentiodynamic polarization study indicates that the synthesized inhibitor acted as a mixed type inhibitor. The inhibition efficiency increases with increase in the concentration of [BMIM][MOPS]. Corrosion protection efficiency ranging from 88% to 90% was featured at 800 ppm of CI in the HCl medium. The adsorption of [BMIM][MOPS] on the carbon steel surface was described by the Langmuir's adsorption isotherm. The scanning electron micrographs inspected the morphology of the carbon steel surface exposed to the solution without and with the presence of inhibitor. The result showed that compound effectively suppressed corrosion by the appearance of an improved surface structure of carbon steel with increasing concentration of [BMIM][MOPS].

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Interactions in Composite Film Formation of Mefp-1/graphene on Carbon Steel

Coatings ◽

10.3390/coatings11101161 ◽

2021 ◽

Vol 11 (10) ◽

pp. 1161

Author(s):

Jie Cheng ◽

Nanxuan Mei ◽

Sulin Chen ◽

Pengpeng Bai ◽

Bin Shen ◽

...

Keyword(s):

Carbon Steel ◽

Composite Film ◽

Steel Surface ◽

Electrochemical Impedance ◽

Film Formation ◽

Steel Substrate ◽

Covalent Bond ◽

Green Composite ◽

Covalent Bonds ◽

Carbon Steel Surface

Mefp-1 adhesive protein derived from marine blue mussels, together with the 2D material graphene, was used to build the green composite film with enhanced anti-corrosion property and mechanical strength. The corrosion inhibition of the composite film, formed by different methods, was evaluated by using electrochemical impedance spectroscopy. The non-degraded adhesion of the composite film to the carbon steel substrate was proved by nano-scratch tests. Infrared spectroscopy was utilized to investigate the film formation process and “three-body interactions” between Mefp-1, graphene and carbon steel surface. The results show that the Mefp-1 adsorbs on the carbon steel surface mainly through the covalent bond between catechols and Fe(III). Meanwhile, Mefp-1 can bond to non-adhesive graphene by forming hydrogen bonds and π−π interaction non-covalent bonds, which facilitate the formation of a robust Mefp-1/graphene composite film on the carbon steel surface.

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Synthesis of ZnO-NPs Using Convolvulus Leaf Extract and Proving Its Efficiency as an Inhibitor for Carbon Steel Corrosion in 1M HCl

10.20944/preprints202001.0118.v1 ◽

2020 ◽

Author(s):

Ghadah Al-Senani

Keyword(s):

Carbon Steel ◽

Steel Surface ◽

Electrochemical Impedance ◽

Steel Corrosion ◽

Isotherm Models ◽

Protective Film ◽

Zno Nps ◽

Strong Inhibitor ◽

Transfer Resistance ◽

Carbon Steel Surface

This paper studies the use of zinc oxide nanoparticles (ZnO-NPs) synthesized using an extract of convolvulus leaves and expired ZnCl2, as an efficient inhibitor for carbon steel corrosion in 1M HCl solution. ZnO-NPs are characterized by Fourier-transform infrared spectrophotometer (FTIR) and UV–Vis analysis. The technique of weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) has also been used to investigate the prevention of carbon steel corrosion in 1M HCl. The results showed that the efficiency of restraint increased when the concentration of ZnO-NPs was raised to 91% and that the inhibition efficiency is still high despite its decrease at high temperature, and it acts as a mixed-type inhibitor A sample of carbon steel with the protective inhibitor layer on top was immersed for 20 hours and observed; an increase in the charge transfer resistance (Rct) and stability of the inhibitor was noticed after 6 hours. Adsorption isotherm models demonstrated that the inhibitor adsorption mechanism on the carbon steel surface followed Langmuir, more than Freundlich and Temkin, behavior. The thermodynamic parameters showed that the adsorption process is a mixed adsorption, spontaneous, and exothermic. The results illustrated that the acid medium was a strong inhibitor of carbon steel corrosion. Scanning electron microscope (SEM) showed that the ZnO-NPs formed a good protective film on the carbon steel surface.

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Experimental Theoretical Studies on Extract of Date Palm Seed as a Green Anti-Corrosion Agent in Hydrochloric Acid Solution

Molecules ◽

10.3390/molecules26123535 ◽

2021 ◽

Vol 26 (12) ◽

pp. 3535

Author(s):

Naba Jasim Mohammed ◽

Norinsan Kamil Othman ◽

Mohamad Fariz Mohamad Taib ◽

Mohd Hazrie Samat ◽

Solhan Yahya

Keyword(s):

Carbon Steel ◽

Hydrochloric Acid ◽

Active Sites ◽

Immersion Time ◽

Steel Surface ◽

Date Palm ◽

Inhibition Efficiency ◽

Experimental Results ◽

Plant Materials ◽

Carbon Steel Surface

Extracts from plant materials have great potential as alternatives to inorganic corrosion inhibitors, which typically have harmful consequences. Experimental and theoretical methodologies studied the effectiveness of agricultural waste, namely, date palm seed extract as a green anti-corrosive agent in 0.5 M hydrochloric acid. Experimental results showed that immersion time and temperature are closely related to the effectivity of date palm seed as a corrosion inhibitor. The inhibition efficiency reduced from 95% to 91% at 1400 ppm when the immersion time was increased from 72 h to 168 h. The experimental results also indicated that the inhibition efficiency decreased as the temperature increased. The presence of a protective layer of organic matter was corroborated by scanning electron microscopy. The adsorption studies indicated that date palm seed obeyed Langmuir adsorption isotherm on the carbon steel surface, and Gibbs free energy values were in the range of −33.45 to −38.41 kJ·mol−1. These results suggested that the date palm seed molecules interacted with the carbon steel surface through mixture adsorption. Theoretical calculations using density functional theory showed that the capability to donate and accept electrons between the alloy surface and the date palm seed inhibitor molecules is critical for adsorption effectiveness. The HOMO and LUMO result indicated that the carboxyl (COOH) group and C=C bond were the most active sites for the electron donation-acceptance type of interaction and most auxiliary to the adsorption process over the Fe surface.

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