Advanced Journal of Chemistry, Section A

Corrosion Inhibition of Iron Using Silicate Base Molecules: A Computational Study

Usman Ishaq Shehu; Bishir Usman

Volume 6, Issue 4 , October 2023, , Pages 334-341

https://doi.org/10.22034/ajca.2023.399262.1375

Abstract

The compounds in this research work were studied theoretically using computational methods to analyze the inhibition of the following compounds of silicate-based obtained from Tapinanthus ... Read More

A DFT and Molecular Dynamic (MD) Simulation on the Adsorption of Vidarabine as a Potential Inhibitor on the Al Metal surface

Fater Iorhuna; Abdullahi Muhammad Ayuba; Thomas Aondofa Nyijime; Muhammad Shuaibu

Volume 6, Issue 4 , October 2023, , Pages 380-390

https://doi.org/10.48309/ajca.2023.409740.1390

Abstract

In this study, DFT and molecular dynamic (MD) modeling were used to conduct a theoretical investigation of the potential inhibition of corrosion on Al by vidarabine. The local, global, ... Read More

Organic Constituents in Air-Dried Alchornea laxifloral Leaves (AALL) Extract: Corrosion Remediation, Isolation and Structural Elucidation

Adebayo Oluwafemi Lawrence; Esan Timothy Oluwaseun; Ilesanmi Osasona; Abiodun Vestor Emmanuel

Volume 6, Issue 3 , July 2023, , Pages 225-243

https://doi.org/10.22034/ajca.2023.393053.1363

Abstract

The Alchornea laxiflora leaves were introduced as a sustainable corrosion inhibitor with excellent inhibition action on mild steel in 1.0M acidic medium solution. Alchornea laxiflora ... Read More

Corrosion Inhibition Potential of Prosopis Juliflora Leaves Extract on Mild Steel in H2SO4 Solutions

Safiyya Abubakar Minjibir; Magaji Ladan

Volume 6, Issue 3 , July 2023, , Pages 311-323

https://doi.org/10.22034/ajca.2023.398774.1372

Abstract

One cannot overstate the importance of looking for alternative solutions and effective corrosion control in our ecosystems. To investigate the corrosion inhibition behavior of ethanol ... Read More One cannot overstate the importance of looking for alternative solutions and effective corrosion control in our ecosystems. To investigate the corrosion inhibition behavior of ethanol extract of Prosopis juliflora leaves on mild steel in various concentrations of tetraoxosulphate VI acid (H2SO4) solution, electrochemical technique, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR) were used in this research. The weight loss data showed that the highest inhibition effectiveness was seen at 303K using 1.0g/L of the extract, while the lowest inhibition efficiency was shown at 333K using 0.2g/L of the extract, which was seen to be 12.91%. Increased extract concentration improved efficacy and surface coverage; increased temperature and corrodent concentrations worsened these qualities. Corrosion activation energy increased along with the rise in inhibitor concentration. The inhibited and uninhibited systems had activation energies of 50.127, 52.591, 53.574, and 54.066 KJ mol-1 and 39.879 KJ mol-1 in the 0.5M H2SO4 system, respectively. The pattern is also the same in 1.0M H2SO4, and the negative ΔGads values suggest that the adsorption process is doable. A non-spontaneous process is suggested by negative ΔSads values, whereas an endothermic process is suggested by positive ΔHads values. According to the examined FTIR spectrum, the Prosopis juliflora ethanol extract was discovered to include the functional groups (O-H, COOH, N-H, N=O, C-O). A scanning electron microscope (SEM) analysis provided evidence of the extract's ability to preserve the metal surface. However, the Freundlch adsorption isotherm was best suited to handle the adsorption data. According to the results, the data from Gads indicated that the extract inhibition process was physisorption, which is why the values were less than 40 KJ mol-1. According to the study's findings, a different concentration of the corrodent should be used to measure the extract's level of inhibition on the surface of mild steel.

Advanced Journal of Chemistry, Section A

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Main Subjects = Corrosion science

Corrosion Inhibition of Iron Using Silicate Base Molecules: A Computational Study

Abstract

A DFT and Molecular Dynamic (MD) Simulation on the Adsorption of Vidarabine as a Potential Inhibitor on the Al Metal surface

Abstract

Organic Constituents in Air-Dried Alchornea laxifloral Leaves (AALL) Extract: Corrosion Remediation, Isolation and Structural Elucidation

Abstract

Corrosion Inhibition Potential of Prosopis Juliflora Leaves Extract on Mild Steel in H2SO4 Solutions

Abstract