TY  - JOUR
Y1  - 2020///
KW  - Plant biomaterials
? Kola nut
? Corrosion inhibition
? Greenness
? Adsorption
JF  - Environmental Science and Pollution Research
UR  - http://eprints.covenantuniversity.edu.ng/16808/
EP  - 34288
VL  - 27
PB  - Springer
A1  - Mohammed, Abdul-Rashid I.
A1  - Solomon, Moses M.
A1  - Haruna, Kabiru
A1  - Umoren, Saviour A.
A1  - Saleh, Tawfik A.
SP  - 34270
TI  - Evaluation of the corrosion inhibition
efficacy of Cola acuminata extract for low
carbon steel in simulated acid pickling
environment
ID  - eprints16808
N2  - In this study, Kola nut extract (KE) was evaluated for inhibiting ability towards
low carbon steel corrosion in 1 M HCl solution using weight loss and
electrochemical techniques. The surface of the corroded carbon steel was
examined by Fourier transform infrared (FTIR) spectroscopy, scanning electron
microscopy (SEM), and atomic force microscopy (AFM). Elemental composition
of the corrosion products and/or adsorbed inhibitor film on the carbon steel
surface was determined with the aid of an energy-dispersive X-ray
spectroscopy (EDX). The ultraviolet-visible (UV-vis) experiments were also
performed to get information about the interaction of KE with the carbon steel
surface. It was found that KE exhibited good corrosion protection property.
From weight loss technique, corrosion rate was reduced from 0.387 to
0.054 mm/year by 700 ppm of KE at room temperature after 24 h immersion
and this corresponded to inhibition efficiency (IE) of 86%. The IE however depreciated with rise in temperature. FTIR results reveal that KE interacted with
the carbon steel surface through the O and N heteroatoms of its
phytoconstituents. FTIR spectroscopy, UV-vis, SEM, AFM, and EDX data
provided proof of KE adsorption on the steel surface as reason for the
corrosion inhibition.
SN  - 0944-1344
AV  - public
ER  -