Application of yellow carrot peel extract as a green corrosion inhibitor on copper metal an‎d Tradescantia pallida leaf extract as a green corrosion inhibitor on steel an‎d also as a green electrocatalyst for hydrogen production

10/15/2026 12:00:00 AM

Given the high level of green chemistry an‎d the resources available in the environment, the use of natural corrosion inhibitors with acceptable inhibition efficiency is considered vital. Based on the results obtained from gas chromatography-mass spectrometry an‎d Fourier transform infrared spectroscopy experiments, it can be concluded that Tradescantia pallida extract an‎d Daucus carota peel have significant corrosion potential due to the presence of elements such as nitrogen, oxygen, sulfur an‎d fluorine in their structure. The present thesis was designed to investigate the effectiveness of this inhibitor in reducing carbon an‎d copper consumption of steel an‎d protecting it in the corrosive environment of 1M hydrochloric acid an‎d 3.5% by weight sodium chloride solutions. The corrosion inhibition percentage was measured using electrochemical techniques including linear scan voltammetry an‎d electrochemical impedance spectroscopy. The results show that Tradescantia pallida extract can significantly reduce the corrosion rate of steel by forming a protective layer on the steel surface in the corrosive environment of 1 M hydrochloric acid, so that the inhibition rate of this extract has also increased to 92.12%. The results show that Daucus carota peel extract can significantly reduce the corrosion rate of copper by forming a protective layer on the copper surface in the corrosive environment of 3.5 wt% sodium chloride, so that the inhibition rate of this extract has also increased to 97.06%. With increasing temperature, the efficiency of the inhibitors used decreases, which indicates that temperature affects the performance of the inhibitors used. To investigate the protective properties of these inhibitors on the morphology of the steel an‎d copper surfaces, field emission scanning electron microscopy, X-ray diffraction an‎d atomic force microscopy were used. Chemical studies showed that the adsorption mechanism of inhibitor molecules on the surface of steel an‎d copper at high temperatures (in the range of 298 to 338 K) follows the Langmuir adsorption isotherm model. Artificial intelligence was also used to predict the rate of consumption an‎d compare it with the results obtained from the laboratory. To improve the hydrogen release reaction from Tradescantia pallida as a natural an‎d green material, it was used on nickel foam an‎d to investigate its catalytic performance, electrochemical experiments in 1 M sodium hydroxide solution were investigated. Linear scan voltammetry experiments, electrochemical impedance spectroscopy were used to eva‎luate the electrocatalytic behavior, which in the optimal case, a potential at a current density of 10 mA/cm2 is added, equivalent to 150 mV an‎d its folding slope is 98.1 mV/dC. Therefore, the results show that purple betel leaf, as a green an‎d cost-effective electrocatalyst, has good performance in the hydrogen production reaction.

بازدارنده هاي سبز خوردگي؛ برگ بيدي بنفش؛ هويج زرد (گزر)؛ هوش مصنوعي؛ الكتروكاتاليست سبز؛ توليد هيدروژن

Green corrosion inhibitors; Tradescantia pallida; Daucus carota; Artificial intelligence; Green electrocatalyst; Hydrogen production

Ali Esmaily

Dr. Ali Ghaffarinejad