Soybean extract firstly used as a green corrosion inhibitor with high efficacy and yield for carbon steel in acidic medium

Two azo derivatives, 4-((4-hydroxy-3-((4-oxo-2-thioxothiazolidin-5-ylidene)methyl)phenyl) diazinyl) benzenesulfonic acid (TODB) and 4-((3-((4,4-dimethyl-2,6-dioxocyclohexylidene) methyl)-4-hydroxyphenyl)diazinyl) benzenesulfonic acid (DODB) were synthesized and characterized using Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H-NMR) and mass spectral studies. Gravimetric methods, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM) techniques and inductive coupled plasma-optical emission spectroscopy were used to verify the above two compounds' ability to operate as mild steel (MS) corrosion inhibitors in 1 M HCl. Tafel data suggest that TODB and DODB have mixed-type characteristics, and EIS findings demonstrate that increasing their concentration not only alters the charge transfer (Rct) of mild steel from 6.88 Ω cm2 to 112.9 Ω cm2 but also changes the capacitance of the adsorbed double layer (Cdl) from 225.36 to 348.36 μF cm-2. At 7.5 × 10-4 M concentration, the azo derivatives showed the highest corrosion inhibition of 94.9% and 93.6%. The inhibitory molecule adsorption on the metal substrate followed the Langmuir isotherm. The thermodynamic activation functions of the dissolution process were also calculated as a function of inhibitor concentration. UV-vis, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) techniques were used to confirm the adsorption phenomenon. The quantum chemical parameters, inductively coupled plasma atomic emission spectroscopy (ICPE) measurements, and the anti-bacterial effect of these new derivatives against sulfate-reducing bacteria (SRB) were also investigated. Taken together, the acquired results demonstrate that these compounds can create an appropriate preventing surface and regulate the corrosion rate. 

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Insights into the adsorption and corrosion inhibition properties of newly synthesized diazinyl derivatives for mild steel in hydrochloric acid: synthesis, electrochemical, SRB biological resistivity and quantum chemical calculations

Controlling C-steel dissolution in 1M HCl solution using newly synthesized ρ-substituted imine derivatives: Theoretical (DFT and MCs) and experimental investigations

The integrity of mild steel affects its performance in many areas of modern manufacturing. However, corrosion remains an important concern with mild steel because it reverts to its most stable oxide state. This has necessitated an increased search for sustainable alternatives to conventional inorganic corrosion inhibitors. On this note, plant-based inhibitors are fast gaining more attention among researchers due to their relative advantages. To holistically address corrosion in mild steel, the sustainability perspective which x-rays the economics, safety, and environmental impacts of plant-based inhibitors from plant-based extracts must be considered. Furthermore, a clear understanding of current trends in the deployment of environment-friendly inhibitors is necessary to operate in different environments. This study examines adsorption mechanisms, as well as several factors affecting the inhibition efficiency of plant-based inhibitors in relation to economic, safety, and environmental considerations, which identify key characterization techniques. Additionally, it outlines a clear plan that allows for structured reflection on the existing literature on corrosion control and management based on a sustainability perspective. Finally, it has been identified in this review that although researchers have made a tremendous effort for corrosion inhibition in mild steel using other techniques, more research is needed to develop sustainable technologies that could assist in isolating bioactive compounds responsible for inhibition, which could further minimize the incidence of wastage attributable to the inability to ascertain the exact amount of plant extracts for certain corrosion inhibition processes. 

Sustainable approach for corrosion control in mild steel using plant-based inhibitors: A review

Insight into synergistic corrosion inhibition of 3-amino-1,2,4-triazole-5-thiol (ATT) and NaF on magnesium alloy: Experimental and theoretical approaches

Comparison of the synergistic inhibition mechanism of two eco-friendly amino acids combined corrosion inhibitors for carbon steel pipelines in oil and gas production

In-depth insight into the inhibition mechanism of the modified and combined amino acids corrosion inhibitors: “intramolecular synergism” vs. “intermolecular synergism”

Developing a robust thiadiazole derivative corrosion inhibitor for dynamic supercritical CO2 aqueous environment: Electrochemical tests and DFT calculations

G.A. Zhang

Papers

Comparison of the synergistic inhibition mechanism of two eco-friendly amino acids combined corrosion inhibitors for carbon steel pipelines in oil and gas production

In-depth insight into the inhibition mechanism of the modified and combined amino acids corrosion inhibitors: “intramolecular synergism” vs. “intermolecular synergism”

Developing a robust thiadiazole derivative corrosion inhibitor for dynamic supercritical CO2 aqueous environment: Electrochemical tests and DFT calculations

Developing two thiocarbohydrazide modified glucose derivatives as high-efficiency green corrosion inhibitors for carbon steel

Preparation of ZIF-67@ DTMS NPs/Epoxy composite coating and its anti-corrosion performance for Q235 carbon steel in 3.5 wt.% NaCl solution