Document Type : Original Research Article


Department of Chemistry, Federal University of Agriculture, PMB, 2373, Makurdi, Benue State, Nigeria


Green synthesis of silver nanoparticles using stem bark extract of Lonchocarpus laxiflorus plant as a reducing agent following a simple, effective, and eco-friendly route was reported in this work. UV-vis, FTIR SEM/EDX, and Backscatter Electron Detector (BSD) analysis were employed in the characterisation of the nanoparticles synthesised. The dispersed nanoparticles were found to have mean particle size of 2.3 nm. The resultant nanoparticles were tested for corrosion inhibition potential of mild steel as a possible alternative to the expensive and environmentally harmful inorganic inhibitors. The composite has proven to be effective inhibitor of corrosion of mild steel in 1.0 M HCl. Further treatment of the experimentally determined results showed that the values of the activation energies were all less than 80 KJmol-1, indicating physical adsorption of the composite to the mild steel surface according to Langmuir’s isotherm. The behaviour of this mixed-type inhibitor was endothermic in nature and followed associative mechanism. 

Graphical Abstract

Ag-nanoparticles Mediated by Lonchocarpus laxiflorus Stem Bark Extract as Anticorrosion Additive for Mild Steel in 1.0 M HCl Solution


Main Subjects

[1]          G.A. Ijuo, A.M. Orokpo, P.N. Tor, Effect of Spondias mombin Extract on the Corrosion of Mild Steel in Acid Media, Chemrj, 3 (2018) 64-77
[2]          N.AI Otaibi, H.H. Hammud, Corrosion Inhibition Using Harmal Leaf Extract as an Eco-Friendly Corrosion Inhibitor, Molecules, 26 (2021) 7024.
[3] A. Ahmed, Corrosion inhibition effect of 2-N-phenylamino-5-(3-phenyl-3-oxo-1-propyl)-1,3,4-oxadiazole on mild steel in 1 M hydrochloric acid medium:Insight from gravimetric and DFT investigations, Materials Science for Energy Technologies, 4 (2021) 398-406
[4] A.E. Edidiong, K. Doga, B.E. Ituen, S.A. Umoren. Synthesis, Characterization and anticorrosion property of olive leaves extract titanium nanoparticles composite, J of Adhesion Sci and Tech, (2018). DOI: 10.1080/01694243.2018.1445800
[5] D.C. Benjamin, A.L. Richard, H.R. David, Corrosion control and monitoring; a program management guide for selecting materials. Advanced Materials, Manufacturing and Testing Information Analysis Center (AMMTIAC), New York, USA, (2006) 1-19.
[6] M. Chukwuma,, 2017.
[7]          O.O. Akinyem, C.N. Nwaokocha, A.O. Adesanya, Evaluation of Corrosion Cost of Crude Oil Processing Industry, Journal of Engineering Science and Technology, 7 (2012) 517-528
[8]          G.A. Ijuo, H.F. Chahul, I.S. Enej, Kinetic and thermodynamic studies of corrosion inhibition of mild steel using Bridelia ferruginea extract in acidic environment, J. Adv. Electrochem, 2 (2016) 107–112.
[9]          D. Nayak, S. Ashe, P.R. Rauta, Bark extract mediated green synthesis of silver nanoparticles: Evaluation of antimicrobial activity and antiproliferative response against osteosarcoma, Mater Sci Eng C, 58 (2016) 44–52.
[10]       M.A. Ayman, A.A. Hamad, G.A. El-Mahdy, O.E. Abdel-Rahman, Application of Stabilized Silver Nanoparticles as Thin Films as Corrosion Inhibitors for Carbon Steel Alloy in 1M Hydrochloric Acid, Hindawi Publishing Corporation J nanomaterials, (2013).
[11]       T.W. Quadri, L.O. Olasunkanmi, O.E. Fayemi, Zinc oxide nanocomposites of selected polymers: synthesis, characterization, and corrosion inhibition studies on mild steel in HCl solution, ACS Omega, 2 (2017) 8421–8437.
[12]       M.M. Solomon, H. Gerengi, S.A. Umoren, Gum Arabic – silver nanoparticles composite as a green anticorrosive formulation for steel corrosion in a strong acid media, Carbohyd Polym, 181 (2018) 43–55.
[13] T.B. Asafa, M.O. Durowoju, K.P. Madingwaneng, S. Diouf, E.R. Sadiku, M.B. Shongwe, P.A. Olubambi, O.S. Ismail, M.T. Ajala, K.O. Oladosu, Gr–Al composite reinforced with Si3N4 and SiC particles for enhanced microhardness and reduced thermal expansion. Appl. Sci. (2020) 1026.
[14] D. N. Hans, African Ethnobotany: Poison and Drugs Chemistry, Pharmacology and Toxicology, CRC Press, London, 25 (1996) 1-5.
[15] G.A. Ijuo, H.F. Chahul, and I.S. Eneji, Corrosion inhibition and adsorption behavior of Lonchocarpus laxiflorus extract on mild steel in hydrochloric acid, Ew J Chem Kinet, 1 (2016) 21-30.
[16] K. Shameli, M. Bin Ahmad, E.A.J. Al-Mulla EA, N.A. Ibrahim, P. Shabanzadeh, A. Rustaiyan, Y. Abdollahi, S. Bagheri, S. Abdolmohammadi, M.S. Usman, M. Zidan. Green biosynthesis of silver nanoparticles using Callicarpa maingayi stem bark extraction, Molecules, 17 (2016) 8506-17. doi: 10.3390/molecules17078506.
[17] E.F.Olasehinde, S.J. Olusegun, A. S Adesina, S.A  Omogbehin, H. Momoh-Yahayah, Inhibitory action of Nicotiana tobacum extracts on the corrosion of mild steel in HCl: adsorption and thermodynamic study, Natural Science, 11 (2013) 83-90
[18] M. Salari, M.S. Khiabani, R.R. Mokarram., B. Ghanbarzadeh, H.S. Kafil, Development and evaluation of chitosan based active nanocomposite films containing bacterial cellulose nanocrystals and silver nanoparticles, Food Hydrocolloids, 84 (2018) 414-423
[19] G. Maduraiveeran, R. Ramaraj, Silver nanoparticles embedded in functionalized silicate sol-gel network film as optical sensor for the detection of biomolecules, J Anal Chem, 68 (2015) 241-8.
[20] A.M. Whelan, M.E. Brennan, W.J. Blau, J.M. Kellya, Enhanced third-order optical nonlinearity of silver nanoparticles with a tunable surface plasmon resonance, J Nanosci Nanotechnol, 4 (2015) 66-8
[21] R. Desai, V. Mankad, S.K. Gupta, P.K. Jha, Size distribution of silver nanoparticles: UV-visible spectroscopic assessment. Nanosci Nanotechnol Lett, 4(2015) 30-4.
[22] R. He, X. Qian, J. Yin, Z. Zhu, Preparation of polychrome silver nanoparticles in different solvents, J Mater Chem, 12 (2015) 3783-6.
[23] A.M. Law, W.D. Kelton, Simulation Modelling and Analysis. 2nd Edition, McGraw-Hill, New York, 1991
[24] O. Benhabiles, F. Galiano, T. Marino, H. Mahmoudi, H. Lounici, A. Figoli, Preparation and Characterization of TiO2-PVDF/PMMA Blend Membranes Using an Alternative Non-Toxic Solvent for UF/MF and Photocatalytic Application, Molecules, 24 (2019) 724. doi:10.3390/molecules24040724
[25] J. Bagyalakshmi, H. Haritha, Green Synthesis and Characterization of Silver Nanoparticles Using Pterocarpus marsupium and Assessment of its In vitro Antidiabetic Activity, AJADD, 5 (2017), 118-130.
[26] M.M Ihebrodike, C.N. Michael, B.O. Kelechukwu, L.A Nnanna, M.A. Chidiebere, F.C. Eze, E.E.Oguzie, Experimental and theoretical assessment of the inhibiting action of Aspilia africana extract on corrosion aluminium alloy AA3003 in hydrochloric acid, J Mater Sci, 47 (2019) 2559-2572. DOI: 10.1007/s10853-011-6079-2
[27] V. Grudić, I. Bošković, A. Gezović, Inhibition of Copper Corrosion in NaCl Solution by Propolis Extract, Chem. Biochem. Eng. Q., 32 (2018) 299–305.
[28] M.E. Sadeghi, F.T. Shahrabi, J. Neshati, 2-Butyne-1,4-diol as a novel corrosion inhibitor for API X65 steel pipeline in carbonate/bicarbonate solution, Corros Sci, 54 (2012) 36–44.
[29] C. Shen, V. Alvarez, J.D.B. Koenig, and J. Luo,. Gum Arabic as corrosion inhibitor in the oil industry: experimental and theoretical studies, Corrosion Engineering, Science and Technology, 54 (2019) 444-454
DOI: 10.1080/1478422X.2019.1613780
[30] M.M. Ihebrodike, A. U. Anthony A.U., B.O. Kelechukwu, G.A. Alozie, The inhibition Effect of Solanummelongena L, leaf extract on the corrosion of aluminium in tetraoxosulphate (vi) acid, Afr. J. Pure Appl. Chem, 4 (2010) 158-165.
[31] B.A. Sami, On the corrosion inhibition of carbon steel in 1 M HCl with a pyridinium-ionic liquid: chemical, thermodynamic, kinetic and electrochemical studies, RSC Adv, 7 (2017) 36688
[32] N.O. Eddy, A.E. Patricia, P.A.P. Mamza, Ethanol extract of Terminalia catappa as a green inhibitor for the corrosion of mild steel in H2SO4. Green Chem Lett Rev, 2 (2009) 223-231.
[33] N.O. Eddy, E.E. Ebenso, Corrosion inhibition and adsorption properties of ethanol extract of Gongronema latifoliumon mild steel in H2SO4, Pigment and Resin Technology, 39 (2010) 77-83.
[34] A.O. Okewale, O.A. Adesina, Kinetics and Thermodynamic Study of Corossion Inhibition of Mild Steel in 1.5 M HCl Medium using Cocoa Leaf Extract as Inhibitor, J. Appl Sci. Environ, Manage, 24 (2010) 37-47
[35] M. Ismail, A.S. Abdulrahman and M.S. Hussain, Solid waste as environmental benign corrosion inhibitors in acid medium, Int. J. Engg. Sci. Technol, 3 (2011) 1742-1748.
[36] N.B. Iroha, N.J. Maduelosi, Corrosion Inhibitive Action and Adsorption Behaviour of Justicia Secunda Leaves Extract as an Eco‐Friendly Inhibitor for Aluminium in Acidic Media, Biointerface Research in Applied Chemistry, 11 (2021) 13019–13030.
[37] E.C. Ogoke, S.A. Odoemelam, B.I. Ita, N.O. Eddy, Adsorption and inhibitive properties of clarithromycin for the corrosion of zinc in 0.01 to 0.05 M H2SO4 Port, Electrochim. Acta, 27 (2009) 713-724.
[38] E.F. Olasehinde, S.J. Olusegun, A.S. Adesina, S.A. Omogbehin, H. Momoh- Yahayah Inhibitory action of Nicotiana tobacum extracts on the corrosion of mild steel in HCl: adsorption and thermodynamic study, Nat. Sci., 11 (2013) 83-90.
[39] O. Oyeneyin, D. Akerele, N. Ojo, O. Oderinlo, Corrosion Inhibitive Potentials of some 2H-1-benzopyran-2-one Derivatives- DFT Calculations, Biointerface Research in Applied Chem, 6 (2021) 13968–13981.
[40] N.O. Eddy, E.E. Ebenso, Corrosion inhibition and adsorption properties of ethanol extract of Gongronema latifoliumon mild steel in H2SO4, Pigm. Resin Tech, 39 (2010) 77-83.
[41] E.E. Oguzie, Y. Li, F.H. Wang, Corrosion inhibition and adsorption behaviour of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion, J. Colloid Interf. Sci., 310(2007) 90-98.
[42] N.O. Eddy, A.S. Ekop, Inhibition of corrosion of zinc in 0.1 M H2SO4 by 5- amino-1- cyclopropyl-7-[(3r,5s) 3,5dimethylpiperazin-1-yl]-6,8-difluoro-4-oxo quinolone-3carboxylic acid, Mat. Sci. Ind. Jour., 4s (2007) 2008-2016.
[43] R. Saratha, D. Saranya, H.N. Meenakshi, R. Shyamala, Enhanced corrosion resistance of Tecoma stans extract on the mild steel in 0.5 M H2SO4 solution, Int. J. Current Res, 2 (2011) 092-096.