Amino acids modified konjac glucomannan as green corrosion inhibitors for mild steel in HCl solution

Zhang, Kegui; Yang, Wenzhong; Yin, Xingtian; Chen, Yun; Liu, Ying; Le, Jinxun; Xu, Bin

doi:10.1016/j.carbpol.2017.10.069

Cited by 162 publications

(25 citation statements)

References 59 publications

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“…One phase peak at high frequency (log f = −2) and a valley at low frequency (about log f = −1.5) in phase angle plots (Figure b) also confirm the presence of two time constants related to capacitive loop and inductive loop in Nyquist plots. In addition, by increasing the concentration of casein, the phase angle curves moved upward to larger values indicating the adhesion of more inhibitor molecules to the working electrodes which made them more homogeneous …”

Section: Resultsmentioning

confidence: 99%

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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In this research, the effects of chitosan on the corrosion behavior of mild steel in 0.1 M hydrochloric acid was investigated by different approaches. According to weight loss measurements, increasing the concentration of chitosan from 0.3 to 1.8 mM, significantly reduced the corrosion rate of mild steel, for example, from 95.5 ± 5 to 7.5 ± 5 mpy at 298 K. The thermodynamic calculations indicate an increase in the corrosion activation energy and the enthalpy of activation when 1.8 mM chitosan was added to the aggressive solution. The electrochemical polarization technique revealed a decrease in corrosion current density which is compatible with the observed increase in the charge transfer resistance measured by electrochemical impedance spectroscopy. The EDS spectra confirmed the adsorption of chitosan on mild steel. Analyzing the surface topography of the coupons by atomic force microscopy showed a remarkable decrease in the corrosion rate of the specimens in the presence of chitosan.

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Section: Resultsmentioning

confidence: 99%

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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“…One of the important mineral acids that is widely used in many applications, including well acidizing, water treatment, chemical cleaning, and acid pickling, is hydrochloric acid (HCl) 1 – 8 . The selection of cost-effective materials to handle this acid requires extreme care and detailed engineering.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient eco-friendly corrosion inhibitor for mild steel in 5 M HCl at elevated temperatures: experimental & molecular dynamics study

El-Haddad

Radwan

Sliem

et al. 2019

Sci Rep

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Laurhydrazide N′-propan-3-one was used as an eco-friendly inhibitor for the corrosion of mild steel in 5 M HCl at elevated temperatures. Various electrochemical techniques and surface characterization methods were utilized in this study. In addition, the kinetics and thermodynamic parameters were calculated and discussed. Furthermore, a geometry optimization of LHP was performed and the time-dependent density functional theory was utilized to calculate the electronic absorption spectra. Finally, frequency calculations were, also, performed on the optimized geometry.

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“…One of the important mineral acids that is widely used in many applications, including well acidizing, water treatment, chemical cleaning, and acid pickling, are hydrochloric and sulfuric acid [1][2][3][4]. The selection of cost-effective materials to handle this acid requires extreme care and detailed engineering.…”

Section: Introductionmentioning

confidence: 99%

Caprylamidopropyl Betaine as a highly efficient eco-friendly corrosion inhibitor for API X120 steel in 1 M H2SO4

et al. 2019

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C ORROSION inhibition of API X120 steel in a 1M sulfuric acid solution at altered temperatures was investigated utilizing a new eco-friendly surfactant (Caprylamidopropyl Betaine (CAPB)) by Gravimetric and electrochemical test (containing potentiodynamic polarization (PP), electrochemical impedance spectroscopy (EIS). Surface characterization tests containing scanning electron microscopy (SEM), and atomic force microscopy (AFM) are utilized in the study. In addition, kinetic and thermodynamic parameters were measured and discussed. The overall results displayed that the corrosion rate of API X120 steel was significantly lowered with improving the temperature. The polarization curves lead to the CAPB inhibitor is influenced both anodic and cathodic reactions (mixed type inhibitor). Analyses of the surface topography designated an appreciable decrease in the surface roughness as the dose of the inhibitor in the solution improved. Energy-dispersive X-ray and X-ray photoelectron spectroscopy revealed the presence of adsorbed nitrogen atoms on the API X 120 steel surfaces. This work provides a promising eco-friendly inhibitor for mitigating the corrosion of API X120 steel in highly acidic brine environments.

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Amino acids modified konjac glucomannan as green corrosion inhibitors for mild steel in HCl solution

Cited by 162 publications

References 59 publications

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Highly efficient eco-friendly corrosion inhibitor for mild steel in 5 M HCl at elevated temperatures: experimental & molecular dynamics study

Caprylamidopropyl Betaine as a highly efficient eco-friendly corrosion inhibitor for API X120 steel in 1 M H2SO4

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