PSI - Issue 72

Khedim Fatima Zahra et al. / Procedia Structural Integrity 72 (2025) 479–490

485

 Chemistry: green synthesis of carbon (leaves), Ghosh et al. (2021), antibacterial (Roots), Abbas et al. (2021), green inhibitor (roots), Al-Nami et al. (2019) …,  Pharmaceutical: phytochemical (All parts of the plant), Balekar (2016), pharmaceutical (leaves), Balekar (2016), Identifies Potential Inhibitors of Diabetes (levels), Thakur et al. (2022)...,  Mecanique engineering: anti-corrosion, Adinortey (2022).

Fig. 3. Number of publications in the areas of C alotropis procera plant use from database of ScienceDirect, Benzargoun and Touban (2020).

With regard to the corrosion problem, CP has been used as an effective inhibitor for various types of steel, as the following table 1. Swaasti et al., https://www.sciencedirect.com/search?qs=calotropis%20procera, compared the efficiency of inhibiting Calotropis procera plant stem extract in different solvents: Methanol, Chloroform and hot water. Were prepared by weight loss method for pig iron in 1M HCl. The experiment was done in the different concentration in ppm solution (200 ppm – 1000 ppm) for various time periods (2 – 8hrs). In the experiment of all extracts (Methanol, hot water and Chloroform) the inhibition efficiency increased with the increasing concentration and decrease with increase in time period, the better percentage of inhibition efficiency was observed in methanol extract by 95% at 1000 ppm concentration for 2hrs immersion time. Priya and Jadonet (2022) investigated of aqueous extract of Calotropis procera flower for mild steel corrosion in acidic solution is described with the aid of computational modeling DFT and MD and MC simulations. Using DFT based computational studies, the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbitals (LOMO) play a pivotal role in determining molecular structural effect of substituents on corrosion inhibition potential of organic compounds and sites for interaction with the metallic surface can be easily recognized. MD and MC simulations give information about the adsorption effectiveness and mode and orientation of corrosion inhibitors, phytochemicals in this case, over the metal surface. Studies indicated that among the tested phytochemicals, 40 Methyl-2 Phenylindole and 5, 12-Naphthacenedione, 8-ethyl exhibit best anticorrosive activities. Relatively high contribution of 40 Methyl-2 Phenylindole and 5, 12-Naphthacenedione, 8-ethyl molecules in charge are attributed to the present of indole and naphthalene moieties in their molecular structures, respectively. Abdellattif et et al. (2021) shows in this study a synergistic inhibitive property of ethanolic leaf extract of Calotropis procera (CP) on the corrosion of mild steel in HCl solution, using the thermometric technique. The experiment was done in the different concentration in ppm solution (0.1 g/50cm3 – 0.8g/50cm3) for various concentrations of HCl. Found that, the percentage inhibition efficiency (%I) of the plant extract increase with the increase in doses of the extract. The results also indicate a maximum inhibition efficiency of about 82.99 % at 0.8 g/50cm3 of Calotropis was achieved with 0.1M HCl solution.The results of the synergetic effect of iodide ions on the inhibitive performance of CP on mild steel corrosion in aqueous 0.4M HCl using 0.8 g of the leaf extracts are 96.92% was recorded upon the addition 0.5 M KI. Samar. Y et al. [80]The corrosion of Cu in 2.0 M HNO3 using Calotropis Procera (CP) extract as save inhibitor has