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Green corrosion inhibitors for copper in NaOH, NaCl and Sea Water-A Review

Author Affiliations

  • 1Chemistry Department, Navyug Science College, Rander Road, Surat, India

Res.J.chem.sci., Volume 11, Issue (3), Pages 46-50, October,18 (2021)


Corrosion like environmental pollution is inevitable and is a serious problem for most of the industries in rapidly developing tropical countries like India. It is a constant and continuous problem. Plant extract has been used as green inhibitors to prevent the metals and alloys against corrosion as they are non-toxic, biodegradable and readily available and eco-friendly. Adsorptions of ingredients of plant extract on metal surface obey various adsorption isotherms. Corrosion inhibition study of copper was carried out by weight loss method with various time and temperatures. Electrochemical methods such as Potentiodynamic polarization (PP) and Electrochemical Impedance Spectra (EIS) were also employed. To study the nature of surface films was done by using various techniques such as, FT-IR and Ultra Violet Visible Spectroscopy, Energy Dispersive X-ray Spectroscopy (EDX), Scanning Electron Microscope (SEM) and Electrochemical Frequency Modulation (EFM). Other methods like High Performance Liquid Chromatography (HPLC), Electric Noise (EN) analysis, EMP, quantum chemical computations techniques were also used. The results obtained from weight loss data and by electrochemical techniques were in good agreement with each other. The present review paper covers the research works done by various researchers on corrosion inhibition of copper in NaOH, NaCl and Sea water media using a plant extract as green inhibitors.


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