TY - JOUR
T1 - Adsorptive performance mechanism of the DNA of Calf Thymus Gland (CTGDNA) on 3CR12 stainless steel as corrosion inhibitor in acidic medium
AU - Agboola, Oluranti
AU - Achile, Faith
AU - Fayomi, Sunday Ojo
AU - Sanni, Samuel Eshorame
AU - Abatan, Olubunmi
AU - Sadiku, Emmanuel Rotimi
AU - Popoola, Patricia
AU - Mubiayi, Mukuna Patrick
AU - Akinlabi, Esther Titilayo
AU - Makhatha, Mamookho Elizabeth
AU - Adedoyin, Toluwani
AU - Ekere, Isaac
PY - 2019/9
Y1 - 2019/9
N2 - Corrosion inhibitor has been successfully used for the protection of 3CR12 stainless steel surface against corrosion in 1–2.5 M HCl. The performance of this inhibitor was correlated to the chemical composition and microscopic structures in accordance with the adsorption on the metal surface. Deoxyribonucleic acid (DNA) was extracted from the thymus gland of a calf, a component of the immune system of mammals. The study investigated the use of DNA extracted from calf thymus gland as a protective coat for 3CR12 stainless steel in the presence of a hydrochloric (HCl) medium. The mechanism of the potential inhibitor was understudied at different conditions of temperature and concentration in order to be able to explain the influence of the inhibitor on the metal. The highest CTGDNA inhibition efficiency was attained at 10 °C and at 20 mg/L. The micrographs revealed by scanning electron microscopy show that bio-macromolecules of CTGDNA were adsorbed on stainless steel surfaces. Nonetheless, the best micrograph result was achieved at 10 °C. The study of the Tafel polarization demonstrated that CTGDNA inhibitors at different concentration represented some mixed-type inhibitors. An inhibition mechanism was proposed which was confirmed by X-ray powder diffraction analysis. The results indicated that the corrosion inhibition efficiency increased with increase in HCl concentration.
AB - Corrosion inhibitor has been successfully used for the protection of 3CR12 stainless steel surface against corrosion in 1–2.5 M HCl. The performance of this inhibitor was correlated to the chemical composition and microscopic structures in accordance with the adsorption on the metal surface. Deoxyribonucleic acid (DNA) was extracted from the thymus gland of a calf, a component of the immune system of mammals. The study investigated the use of DNA extracted from calf thymus gland as a protective coat for 3CR12 stainless steel in the presence of a hydrochloric (HCl) medium. The mechanism of the potential inhibitor was understudied at different conditions of temperature and concentration in order to be able to explain the influence of the inhibitor on the metal. The highest CTGDNA inhibition efficiency was attained at 10 °C and at 20 mg/L. The micrographs revealed by scanning electron microscopy show that bio-macromolecules of CTGDNA were adsorbed on stainless steel surfaces. Nonetheless, the best micrograph result was achieved at 10 °C. The study of the Tafel polarization demonstrated that CTGDNA inhibitors at different concentration represented some mixed-type inhibitors. An inhibition mechanism was proposed which was confirmed by X-ray powder diffraction analysis. The results indicated that the corrosion inhibition efficiency increased with increase in HCl concentration.
KW - Adsorption
KW - Corrosion
KW - CTG inhibitor mechanism
KW - EDX spectra
KW - Polarization measurement
KW - SEM
KW - XRD
UR - http://www.scopus.com/inward/record.url?scp=85066125698&partnerID=8YFLogxK
U2 - 10.1007/s40735-019-0245-5
DO - 10.1007/s40735-019-0245-5
M3 - Article
AN - SCOPUS:85066125698
SN - 2198-4220
VL - 5
JO - Journal of Bio- and Tribo-Corrosion
JF - Journal of Bio- and Tribo-Corrosion
IS - 3
M1 - 52
ER -