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A New Insight into Non‐Steroidal Anti‐Inflammatory Drugs (NSAIDs) as Modulated Green Inhibitory Agent on Mild Steel Corrosion

“…The influence of the drug in various concentrations on the metal loss in MS corrosion has been investigated depending on the limit of its solubility in water at that temperature and the concerned parameters are depicted in Table 1. [5,18] It is clearly seen that the %IE of inhibitor increases and CR decreases with increase in the NSAIDs concentration. Such behaviour could be inferred to the decrease in the weight loss due to the increase in adsorption of inhibitor onto the substrate interface.…”

“…It offers the basic information on the physical and chemical adsorptions of both the charged inhibitor and surface of the MS. [13,16,32] Here, the value of surface coverage (θ) at different Aspirin concentration in 1 M HCl across the temperature range (303.15-323.15 K) ( Table 4) is calculated to justify the best isotherm fit for the adsorption process. 5 It was observed that IE (%) and θ decreases while CR increase with increase in temperature. Following, the plot ( Figure 11a) it was observed that the experimental data got well-fitted for Langmuir adsorption isotherm.…”

“…But these application areas require the use of corrosion inhibitors to detain the acid attack on metals causing a minimum loss. [1,5,6] Studies have reported the adsorption performance of inhibitor on the MS surface to get influenced by the inhibitor electronic structure which possesses the active sites in the molecule, the charge and its distribution over the metal surface inhibitor entity, the type of aggressive media and ability to replace the water molecule at a corroding interface. [5][6][7][8] However, the inhibitor efficiency accounts the environment characteristics in which it acts, and also on the electrochemical potential at the metal-solution interface.…”

“…[1,5,6] Studies have reported the adsorption performance of inhibitor on the MS surface to get influenced by the inhibitor electronic structure which possesses the active sites in the molecule, the charge and its distribution over the metal surface inhibitor entity, the type of aggressive media and ability to replace the water molecule at a corroding interface. [5][6][7][8] However, the inhibitor efficiency accounts the environment characteristics in which it acts, and also on the electrochemical potential at the metal-solution interface. [1,9,10] Thus recent research have shown the use of drugs as corrosion inhibitors for metals and focuses mainly on the use of biodegradable, highly water-soluble, and non-toxic ''green" corrosion inhibitor as an alternative because of their tendency to form insoluble complexes/chelates with the metal.…”