European Journal of Chemistry 2017, 8(2), 168-173 | doi: https://doi.org/10.5155/eurjchem.8.2.168-173.1558 | Get rights and content

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Application of ethanol extracts of Tapinanthus dodoneifolius to inhibit annealed carbon corrosion in 2 M HCl and 3.5% NaCl solutions


Raphael Shadai Oguike (1,*) , Abdullahi Mohammad Shibdawa (2) , Usman Ibrahim Tafida (3) , Doris Ezekiel Amin Boryo (4) , Florence Ikwo Omizegba (5)

(1) Corrosion Protection and Materials Science Laboratory, Department of Chemistry, Abubakar Tafawa Balewa University, PMB 0248 Bauchi, Nigeria
(2) Corrosion Protection and Materials Science Laboratory, Department of Chemistry, Abubakar Tafawa Balewa University, PMB 0248 Bauchi, Nigeria
(3) Corrosion Protection and Materials Science Laboratory, Department of Chemistry, Abubakar Tafawa Balewa University, PMB 0248 Bauchi, Nigeria
(4) Corrosion Protection and Materials Science Laboratory, Department of Chemistry, Abubakar Tafawa Balewa University, PMB 0248 Bauchi, Nigeria
(5) Corrosion Protection and Materials Science Laboratory, Department of Chemistry, Abubakar Tafawa Balewa University, PMB 0248 Bauchi, Nigeria
(*) Corresponding Author

Received: 23 Feb 2017 | Revised: 27 Mar 2017 | Accepted: 05 Apr 2017 | Published: 30 Jun 2017 | Issue Date: June 2017

Abstract


Protection effect of ethanol extracts of Tapinanthus dodoneifolius leaf (TD extracts) on corrosion of annealed carbon (FE164531) in 2 M HCl and 3.5% NaCl solution has been investigated by weight loss and electrochemical techniques. Surface morphology and elemental analysis was carried out on the corroded specimens using Scanning Electron Microscope/ Energy Dispersive X-ray Spectroscopy (SEM/EDS) to augment results obtained. The data obtained from weight loss revealed that the corrosion protection potentials of TD extract is temperature-concentration dependent. The effectiveness of protection against the corrosive environment increased with increasing extracts concentration but decreased with increased temperature. Electrochemical polarization data showed TD extracts suppressed both the cathodic and anodic processes on FE164531 specimen surface. Calculated thermodynamic parameters showed that TD extracts adsorption process was spontaneous with likely electrostatic interactions which propose physical adsorption, a phenomenon consistent with unfavorable adsorption with increasing experimental temperature. The elemental analysis data show the presence of TD extracts species on FE164531 surface supporting strong adsorption of the extracts on the metal surface while SEM showed lesser corroded surface in the presence of TD extracts.


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Editor-in-Chief
European Journal of Chemistry

Keywords


Adsorption; Annealed carbon; Biomass extracts; Elemental analysis; Corrosion inhibition; Tapinanthus dodoneifolius

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DOI: 10.5155/eurjchem.8.2.168-173.1558

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Funding information


Tertiary Education Trust Fund Nigeria 2015/2016.

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How to cite


Oguike, R.; Shibdawa, A.; Tafida, U.; Boryo, D.; Omizegba, F. Eur. J. Chem. 2017, 8(2), 168-173. doi:10.5155/eurjchem.8.2.168-173.1558
Oguike, R.; Shibdawa, A.; Tafida, U.; Boryo, D.; Omizegba, F. Application of ethanol extracts of Tapinanthus dodoneifolius to inhibit annealed carbon corrosion in 2 M HCl and 3.5% NaCl solutions. Eur. J. Chem. 2017, 8(2), 168-173. doi:10.5155/eurjchem.8.2.168-173.1558
Oguike, R., Shibdawa, A., Tafida, U., Boryo, D., & Omizegba, F. (2017). Application of ethanol extracts of Tapinanthus dodoneifolius to inhibit annealed carbon corrosion in 2 M HCl and 3.5% NaCl solutions. European Journal of Chemistry, 8(2), 168-173. doi:10.5155/eurjchem.8.2.168-173.1558
Oguike, Raphael, Abdullahi Mohammad Shibdawa, Usman Ibrahim Tafida, Doris Ezekiel Amin Boryo, & Florence Ikwo Omizegba. "Application of ethanol extracts of Tapinanthus dodoneifolius to inhibit annealed carbon corrosion in 2 M HCl and 3.5% NaCl solutions." European Journal of Chemistry [Online], 8.2 (2017): 168-173. Web. 23 Sep. 2023
Oguike, Raphael, Shibdawa, Abdullahi, Tafida, Usman, Boryo, Doris, AND Omizegba, Florence. "Application of ethanol extracts of Tapinanthus dodoneifolius to inhibit annealed carbon corrosion in 2 M HCl and 3.5% NaCl solutions" European Journal of Chemistry [Online], Volume 8 Number 2 (30 June 2017)

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