The Development of silane functionalized ZnO nanoparticles for enhancing anticorrosion application


  • Geetha Mable Pinto St. Agnes Centre for Post Graduate Studies and Research, Mangaluru.
  • Apoorva Devadiga St. Agnes Centre for Post Graduate Studies and Research, Mangaluru


ZnO-Silane, Green synthesis, Functionalization, Corrosion, adsorption, Chemical Science


The effect of zinc oxide nanoparticles surface modified with N-[3-(Trimethoxysilyl)propyl]ethylenediamine (15.5 nm) on mild steel in 0.5M HCl at five different concentrations and temperatures has been studied using Electrochemical Impedance Spectroscopy (EIS) and Tafel polarization curves. Results show that the inhibition efficiency of synthesized mixed type of inhibitor increases up to 40˚C and then decreases because of both physical and chemical adsorption. The activation parameters calculated using Arrhenius plot confirmed chemical adsorption process. Adsorption process follows Langmuir adsorption isotherm and free energy of adsorption values proved the spontaneous adsorption of inhibitor on mild steel sample. Scanning electron microscopy (SEM) analysis also showed that the synthesized nanoparticle is efficient as corrosion inhibitor. Green synthetic method was adopted in synthesis of inhibitor by using Phyllanthus Emblica (Gooseberry) extract. The inhibitor was characterized by Fourier Transform Infra-red Spectroscopy (FT-IR) and X-Ray Diffraction techniques.

Author Biographies

Geetha Mable Pinto, St. Agnes Centre for Post Graduate Studies and Research, Mangaluru.

Department of Chemistry, St Agnes Centre for Postgraduate Studies and Research, Mangaluru - 575002, Karnataka, India.

Apoorva Devadiga, St. Agnes Centre for Post Graduate Studies and Research, Mangaluru

St. Agnes Centre for Post Graduate Studies and Research, Mangaluru - 575002, Karnataka, India.


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