Role of Organic and Eco-Friendly Inhibitors on the Corrosion Mitigation of Steel in Acidic Environments—A State-of-Art Review

Abstract

Steel has versatile application in chemical, structure and construction industries owing to its mechanical properties. However, it is susceptible to corrosion in acid environments. Thus, it requires to protect the steel from corrosion. Different types of corrosion resistance steel, coatings and inhibitors are developed to mitigate the corrosion, but, inhibitor is the best remedies to control the corrosion of steel in acid condition. Moreover, organic and green inhibitors used in acid condition for descaling, acid pickling, pipelines, boiler tubes and oil-wells. Organic inhibitors reduce the dissolution of steel in acid but, it is hazardous, expensive and needs expertise to synthesize the inhibitor. Therefore, there is utmost required to study and compile the latest research about the eco-friendly corrosion inhibitors, which showed more than 90% corrosion inhibition efficiency. In the present study, I have reviewed the state-of-arts, and compile the latest development in organic and eco-friendly corrosion inhibitor used in acid environment as well as suggested about the future scope and role of green inhibitor for sustainable society, which is economical, less hazardous and readily available from the natural sources.

Performance and Mechanism of Alkylimidazolium Ionic Liquids as Corrosion Inhibitors for Copper in Sulfuric Acid Solution

“…The adsorption progress of three alkylimidazolium ionic liquids on the Cu (111) surface was examined by molecular dynamics simulation using the Forcite module in Materials Studio [51]. Cu(111) surfaces were chosen for the simulation because they are a more stable and denser surface [32][33][34], which have been widely used to study the adsorption of copper surfaces with other organic inhibitors [1][2][3][4][5][6][7][8][9][10][11][12]. The simulation box includes a surface, a material layer, and a vacuum from bottom to top.…”

“…Copper and its alloys are widely utilized as an important material in various industrial applications such as microelectronic, military, and civilian living life owing to its electrical conductivity, good thermal properties, mechanical workability, good availability, cheap, and corrosion resistance properties. However, copper will be corroded unavoidably in acid surroundings and humid environments, greatly limiting its use [1][2][3][4][5][6][7][8][9][10][11][12][13]. The common ways for corrosion prevention are isolation protection, electrochemical protection, and adding inhibitors.…”

“…The common ways for corrosion prevention are isolation protection, electrochemical protection, and adding inhibitors. One effective and useful approach to protect copper metals against the corrosion problem of acid solutions is adding corrosion inhibitors, which are often ionic liquids because they have many special properties such as better thermal stability, good solubility, high conductivity, wider electrochemical window, and so on [5,7,12,13]. Ionic liquids (ILs) are currently used as fascinating compounds which are salts with liquid formation at room temperature or low temperature (<100°C) in intense examination [14].…”

“…[14,15]. Ionic liquids are popularly used as sustainable and green corrosion inhibitors for metal [5,7,12,[15][16][17][18]. Many researchers used electrochemical tests and surface investigations to obtain the inhibition efficiency and found that the adsorption process of an inhibitor can be described by Langmuir adsorption [19,20].…”

Corrosion inhibition and thermodynamic studies on carbon steel in well water by ethanolic extract of Alpinia officinarum leaves (Lesser galangal)-Zn2+

“…Therefore, the IE is increased and CR is also reduced, when the concentration of combined inhibitor (AO-Zn 2+ ) system is increased (30,40) . https://www.indjst.org/ Anodic reaction (28,41) : Fe → Fe 2+ + 2e − Cathodic reaction (41) :…”