3. A review-COMPARATIVE STUDY OF CORROSION INHIBITION OF METALS BY USING INHIBITORS AND INHIBITORS ASSEMBLED ON NANO PARTICLES IN ACIDIC MEDIA By NEHA R. PAREKH AND NISHA K. SHAH

Abstract

There is an intensive effort underway to develop new plant origin corrosion inhibitors for metal subjected to various environmental conditions. These efforts have been motivated by the desire to replace toxic inhibitors used for mitigation of corrosion of various metals and alloys in aqueous solutions. Green inhibitors represent a class of interesting source of compounds currently being explored for use in metal corrosion protection in most systems, as possible replacement of toxic synthetic inhibitors. In this review article, research results on the use of eco-friendly corrosion inhibitors have been summarized. A general introduction to the topic of corrosion mitigation by inhibitors is presented followed by extensive literature survey on the use of natural inhibitors for corrosion control of metals and alloys in different corrosive media. This reports an overview of the consumption of green inhibitors to shield metals from corrosion as well as the current research on utilization of nanoparticles in inhibitors molecules. Nanoparticles has the large surface to volume ratio, due to large surface area it has tendency to form layer on the metal surfaces thereby, increasing the efficiency of the inhibitor by incorporating nanoparticles when compared with alone. Further, in most of the cases, the inhibition efficiency can be raised with the increase in temperature and time by treating green inhibitor with nanoparticles for the corrosion of metals in aggressive media.