Performance Evaluation of New Chalcone Oxime Functionalized Graphene Oxide as a Corrosion Inhibitor for Carbon Steel in a Hydrochloric Acid Solution

Abstract

This study aims to synthesize new chalcone oxime functionalized graphene oxide (CO-GO) and investigate the enhancement in corrosion protection. The morphology and structure of the synthesized CO-GO have been characterized by elemental analysis: Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM). Moreover, the effectiveness of corrosion inhibition was investigated by utilizing electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). The results of the above analyses demonstrate that CO-GO has an outstanding corrosion inhibitor performance of up to 94% and acts as a mixed-type inhibitor with a primarily anodic action. The effect of temperature on a carbon steel surface indicates that the tested composites are chemisorbed. A few techniques were able to provide surface characterization such as scanning electron microscopy and ultraviolet (UV)−visible spectroscopy to confirm inhibitor adsorption on the carbon steel surface.

Corrosion Inhibition Studies of 8-Hydroxyquinoline Derivatives for N80 Steel in a 1.0 M HCl Solution: Experimental, Computational Chemistry, and Quantitative Structure–Activity Relationship Studies

“…In this equivalent circuit diagram, R s is the solution resistance between the study electrode surface and the reference electrode, R ct represents the charge transfer resistance of the corrosion reaction, and CPE is the constant phase angle element, which is often used to replace the bilayer capacitance ( C dl ) on the metal electrode surface to more accurately resolve the bilayer impedance effect on the working electrode surface. Corrosion parameters such as R s and R ct are listed in Table S4, where C dl is calculated by the following equation: ,, C dl = false( Y 0 R ct 1 − italicn false) 1 / italicn where Y 0 is the exponential factor, R ct is the charge transfer resistance, and n (0 < n < 1) is the dispersion coefficient, which describes an ideal capacitor when n = 1 and a pure resistor when n = 0. The inhibition efficiency (IE EIS ) can be obtained through the following equation: normalI normalE EIS = R ct − R ct , 0 R ct × 100% where R ct and R ct,0 are the charge transfer resistance of metal corrosion in the added corrosion inhibitor and blank solution, respectively.…”

“…Corrosion parameters such as R s and R ct are listed in Table S4, where C dl is calculated by the following equation: ,, C dl = false( Y 0 R ct 1 − italicn false) 1 / italicn where Y 0 is the exponential factor, R ct is the charge transfer resistance, and n (0 < n < 1) is the dispersion coefficient, which describes an ideal capacitor when n = 1 and a pure resistor when n = 0. The inhibition efficiency (IE EIS ) can be obtained through the following equation: normalI normalE EIS = R ct − R ct , 0 R ct × 100% where R ct and R ct,0 are the charge transfer resistance of metal corrosion in the added corrosion inhibitor and blank solution, respectively. R ct can be interpreted as an electrical term that is inversely proportional to the corrosion rate.…”

“…In this equivalent circuit diagram, R s is the solution resistance between the study electrode surface and the reference electrode, R ct represents the charge transfer resistance of the corrosion reaction, and CPE is the constant phase angle element, which is often used to replace the bilayer capacitance (C dl ) on the metal electrode surface to more accurately resolve the bilayer impedance effect on the working electrode surface. Corrosion parameters such as R s and R ct are listed in Table S4, where C dl is calculated by the following equation: 42,65,66…”

Insights into the Anticorrosion Performance of Solanum lyratum Leaf Extract for Copper in Sulfuric Acid Medium

“…The inhibition efficiency (η) of SLLE can be calculated by EIS data. The specific calculation formula is as follows: η = 0.25em R normalp − R normalp , 0 R normalp × 100 % where R p and R p,0 represent the polarization resistance in the presence and absence of SLLE, respectively. A Tafel test was performed in the range of E OCP ± 0.25 V, and the scanning rate was 1 mV/s.…”

Superior Long-Term Corrosion Inhibition of N80 Steel by New Eco-friendly Hydrazone-Based Compounds in a Simulated Oil Well Acidizing Environment: Establishing the Mechanism at the Molecular Level

“…Carbon steel is an extensively used metal in many fields like oil and gas transportation, automotive, and aeronautical sectors because of its desirable chemical, physical, and mechanical properties, availability, and low cost. − However, despite the high scientific and industrial development achieved in our era, the corrosion of metals and alloys is still the main natural, spontaneous, and destructive phenomenon that causes heavy and sometimes catastrophic losses in industrial or civil infrastructures in terms of economy and safety. , Hence, high importance has been given to this research field, as demonstrated by so numerous scientific papers and patents published in the last three decades . To overcome this challenging issue, various protection methods have been suggested and developed to enhance corrosion resistance as well as to reduce the rate of deterioration of metals and alloys.…”