Garcinia Kola Leaf Extract as Green Inhibitor for the Corrosion of Aluminum Alloy in Acidic Medium


  • Eziyi Emea Ajike Department of Physics, Clifford University Owerrinta, Abia State, Nigeria
  • Lebe Agwu Nnanna Department of Physics, Michael Okpara University of Agriculture Umudike, Abia State
  • Obinwa Orji Department of Physics, Clifford University Owerrinta, Abia State, Nigeria
  • Bassey Sam-Uket Okori Department of Chemical Sciences, Clifford University, Owerrinta, Abia State, Nigeria
  • Elizabeth Chinyere Nwaokorongwo Department of Physics, Michael Okpara University of Agriculture Umudike, Abia State
  • Onyinyechi Chinanuekpere Nwadiuko Department of Physics, Michael Okpara University of Agriculture Umudike, Abia State
  • Chiedozie Friday Department of Physics, Michael Okpara University of Agriculture Umudike, Abia State



Corrosion, Inhibitor, Inhibition efficiency, Adsorption, Desorption


The effectiveness of Garcinia kola leaf extract in inhibiting aluminum corrosion in 1 MHCl media was investigated. The phytochemical analysis of the Garcinia kola extract showed that it contains phytochemicals including saponin, alkaloid, flavonoid, and tannin. Garcinia kola is a highly effective inhibitor for the corrosion of aluminum in HCl acid environments, and its inhibitory efficiency grows with respect to the quantities of the inhibitor, according to experiments done by weight loss technique. From the study, the corrosion rate increases with increasing temperature and reduces in the presence of plant extracts as the concentration of the inhibitor increases. More so, the effectiveness of Garcinia kola's inhibition was found to diminish with rising temperature and to increase with respect to concentration. The maximum reported inhibitory efficiency was observed at 1.0 M concentration at 318 K, which was 99.03%. This shows that Garcinia kola is a potent organic inhibitor, probably as a result of the inhibitor molecule adhering to the surface of the aluminum alloy.


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How to Cite

Ajike, E. E., Nnanna, L. A., Orji, O., Okori, B. S.-U., Nwaokorongwo, E. C., Nwadiuko, O. C., & Friday, C. (2023). Garcinia Kola Leaf Extract as Green Inhibitor for the Corrosion of Aluminum Alloy in Acidic Medium. Journal of Nano and Materials Science Research, 2(1), 110–116.