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Öğe Corrosion inhibition, surface adsorption and computational studies of Momordica charantia extract: a sustainable and green approach(Springer International Publishing Ag, 2021) Haldhar, Rajesh; Prasad, Dwarika; Kamboj, Divya; Kaya, Savas; Dagdag, Omar; Guo, LeiThe aerial parts extract of Momordica charantia plant were used for the corrosion resistance of carbon steel in the acidic medium (0.5 M H2SO4) utilizing weight loss method, Tafel and Electrochemical Impedance Spectroscopy. The state of mixed inhibitor adsorption on the carbon steel surface is shown by potentiodynamic polarization. M. charantia achieved the extraordinary inhibition efficiency of 93.51% at 500 mg/L of inhibitor concentration. Scanning electron microscopy and atomic force microscopy were used to know about the thin layer which was formed on the surface of carbon steel for its protection from corrosion and the adsorption of inhibitor was shown by UV-vis. spectroscopic technique. Fourier Transform Infrared Spectroscopy technique confirmed the existence of functional groups and the heteroatoms exhibit in the inhibitor. Adsorbance by the inhibitory molecules on the carbon steel surface followed the Langmuir adsorption isotherm. Hypothetical investigations (computational) showed a very valuable report. All acquired outcomes ensure that M. charantia extract can procedure an effectual preventing layer and restrict the corrosion procedure.Öğe Corrosion inhibition, surface adsorption and computational studies of Swertia chirata extract: A sustainable and green approach(Elsevier Science Sa, 2021) Haldhar, Rajesh; Prasad, Dwarika; Nguyen, Le T. D.; Kaya, Savas; Bahadur, Indra; Dagdag, Omar; Kim, Seong-CheolThe aerial parts extracted from Swertia chirata (S. chirata) plant were employed for the corrosion resistance of carbon steel in the acidic medium (0.5 M H2SO4) utilizing by weight-loss method, Tafel and EIS. The state of mixed inhibitor adsorption on the carbon steel surface were shown by potentiodynamic polarization. S. chirata achieved the extraordinary inhibition efficiency of 92.32% at 500 mg/L of inhibitor concentration. SEM and AFM were used to know about the thin layer formed on the surface of carbon steel for its protection from corrosion and the adsorption of inhibitors shown by UV-vis analysis FT-IR technique confirmed the existence of functional groups and the heteroatoms exhibited in the inhibitor. Adsorbance by the inhibitory molecules on the carbon steel surface followed the Langmuir adsorption isotherm. Theoretical investigations (computational) showed a precious report which was supported by experimental results. All acquired outcomes ensure that S. chirata extract can procedure an effectual preventing layer and restrict the corrosion procedure.Öğe Development process for eco-friendly corrosion inhibitors(Elsevier, 2022) Rbaa, Mohamed; Galai, Mouhsine; Dagdag, Omar; Guo, Lei; Tüzün, Burak; Berdimurodov, Elyor; Zarrouk, AbdelkaderCurrently, the eco-friendly corrosion inhibitors are widely used to protect the metallic materials from the corrosion destruction. The eco-friendly corrosion inhibitors are biodegradable, low toxic, low volatile, low cost, good water soluble, good adsorbent, and do not contain heavy metals or other toxic compounds. The plant extracts and natural substances are suggested as an eco-friendly corrosion inhibitors in the various corrosion medium. The corrosion of steel, copper, magnesium, aluminum and other metal based metallic materials in the aggressive acidic, alkaline, saline and other corrosion medium are efficiently protect with the presence of eco-friendly corrosion inhibitors. The cost in the synthesizing natural inhibitors is very low and syntheses processes are environmental friendly. This make eco-friendly corrosion inhibitors become more efficient as an economically and environmentally. In this chapter, the development process for eco-friendly corrosion inhibitors, their advantages and their inconveniences are discussed and reviewed. © 2022 Elsevier Inc. All rights reserved.Öğe Development process for ecofriendly corrosion inhibitors(26.07.2022) Rbaa, Mohamed; Galai, Mouhsine; Dagdag, Omar; Guo, Lei; Tüzün,Burak; Berdimurodov, Elyor; Zarrouk, Abdelkader; Lakhrissi, BrahimThe metallic materials are main used materials, because, their physical properties, such as electrical conduction, thermal conduction, and mechanical performances. The steel based metallic materials are most common in the gas and oil industry [1–3]. However, a high percentage of the steel materials are damaged by corrosion in acidic environments [4]. Therefore, to protect steel materials is ongoing problem. Currently, many researches are interested to going research in the corrosion protection.Öğe Formulation of thiosemicarbazide based epoxy resin as inhibitor for corrosion of mild steel in 1M HCl: electrochemcial and theoretical studies(Taylor & Francis Ltd, 2025) Elkhadim, M.; Driouch, M.; Kadiri, M.; Dagdag, Omar; Kim, Hansang; Hsissou, Rachid; Serrar, HoudaThe study presents the development of a new pentafunctional epoxy resin, pentaglycidylthiosemicarbazide (PGTSC), synthesised through a simple condensation process. The molecular structure of PGTSC was characterised using FTIR and 1H NMR spectroscopy. Viscosity measurements indicated that PGTSC's viscosity is significantly influenced by solution concentration and temperature, demonstrating its improved inhibition performance. Electrochemical tests showed that PGTSC achieves a maximum corrosion inhibition efficiency of 92% at a concentration of 10-3 M, with a notable reduction in corrosion current density from 608.60 mu A/cm(2) to 36.67 mu A/cm(2) in 1.0 M HCl. The polarisation studies revealed a mixed-type inhibition mechanism affecting both anodic and cathodic reactions, and the polarisation resistance increased, enhancing the protective properties of steel. The findings were corroborated by additional studies, including PDP, EIS, SEM observations, and computational DFT, MD, and MC calculations support the experimental findings and were in good agreement.Öğe Investigation of plant waste as a renewable biomass source to develop efficient, economical and eco-friendly corrosion inhibitor(Elsevier, 2021) Haldhar, Rajesh; Prasad, Dwarika; Bahadur, Indra; Dagdag, Omar; Kaya, Savas; Verma, Dakeshwar Kumar; Kim, Seong-CheolVarious concentration of Solanum surattense (S. surattense) aerial parts extract was utilized for low carbon steel (LCS) in the presence of corrosive medium (0.5 M sulfuric acid) utilizing weight-loss technique and electrochemical methods (Tafel and EIS). The mixed adsorption status on the LCS was exhibited by potentiodynamic polarization. S. surattense accomplished 93% corrosion inhibition effectiveness at an inhibitor concentration of 500 mg/L. SEM and AFM was utilized to distinguish the thin film framed on the outside of the metal alloy to protect it from corrosion. The molecular adhesion of the inhibitor was demonstrated to be Ultraviolet-visible (UV-Vis) spectroscopic method. The FT-IR strategy supported the existence of different functional groups and different atoms other than Carbon and Nitrogen in the protective extract. Thin layer adhesion of the inhibitor molecules outside of LCS metal substrate obeyed the Langmuir adsorption isotherm and acted as mixed type inhibitor. DFT revealed an entirely important report with high EHOMO and low ELUMO values for active phytoconstituents showing potential nature of inhibitor and good agreements with experimental outcomes. The whole acquired results entail that S. surattense creates protective coat hence limit the degree of LCS degradation. (C) 2021 Elsevier B.V. All rights reserved.Öğe Natural corrosion inhibitors: Adsorption mechanism(De Gruyter, 2022) Dagdag, Omar; Haldhar, Rajesh; Kim, Seong-Cheol; Berdimurodov, Elyor; Ebenso, Eno E.; Kaya, SavasThe motivation behind this chapter is to give an outline of the bibliographic insights expected to structure our segment. We examine modern green corrosion inhibitors and their restraint and adsorption systems. The corrosion repressing impacts of different plant extracts are additionally discussed utilizing weight loss (WL) and electrochemical techniques. Also, this chapter talks about surface investigation, including chemical examination. © 2022 Walter de Gruyter GmbH, Berlin/Boston. All rights reserved.Öğe Papaver somniferum as an efficient corrosion inhibitor for iron alloy in acidic condition: DFT, MC simulation, LCMS and electrochemical studies(Elsevier, 2021) Haldhar, Rajesh; Kim, Seong-Cheol; Prasad, Dwarika; Bedair, M. A.; Bahadur, Indra; Kaya, Savas; Dagdag, OmarThe corrosion resistance of iron alloy in 0.5 M sulphuric acid was checked in the presence and absence of Papaver somniferum ( P. somniferum ) seed extract. Notably, P. somniferum showed 95% corrosion resistance efficiency at 500 mg/L concentration. The adsorption of this inhibitor follows the Langmuir isotherm indicating its monolayer formation on the surface of iron alloy. The potentiodynamic experiments indicated its nature as mixed type of inhibition behaviour. The SEM and AFM techniques were used to study the protective layer on iron alloy. FT-IR with ATR confirmed various functional groups containing heteroatoms present in phytochemicals and formed complex with iron respectively. Theoretical studies were given as a valuable report to understand the comparative adsorption of phytochemical. All acquired outcomes confirmed that P. somniferum seed extract act as an efficient corrosion inhibitor. (c) 2021 Elsevier B.V. All rights reserved.Öğe Zeolite/Cellulose Acetate (ZCA) in Blend Fiber for Adsorption of Erythromycin Residue From Pharmaceutical Wastewater: Experimental and Theoretical Study(Frontiers Media Sa, 2021) Jodeh, Shehdeh; Erman, Israa; Hamed, Othman; Massad, Younes; Hanbali, Ghadir; Samhan, Subhi; Dagdag, OmarThe expanding amount of remaining drug substances in wastewater adversely affects both the climate and human well-being. In the current investigation, we developed new cellulose acetic acid derivation/zeolite fiber as an effective technique to eliminate erythromycin (ERY) from wastewater. The number of interchangeable sites in the adsorbent structures and the ratio of ERY to the three adsorbents were identified as the main reasons for the reduction in adsorption as the initial ERY concentrations increased. Additionally, for all adsorbents, the pseudo-second-order modeling showed better fitting for the adsorption than the pseudo-first-order modeling. However, the findings obtained in the pseudo-first-order model were still enough for explaining the sorption kinetics of ERY, showing that the surface displayed all chemisorption and physi-sorption adsorption processes by both adsorbents. The R (2) for the second order was very close to 1 for the three adsorbents in the case of pseudo-second-order. The adsorption capacity reached 17.76 mg/g. The three adsorbents showed negative values of Delta H, and these values were -6,200, -8,500, and -9600 kJ/mol for zeolite, CA, and ZCA, respectively, and this shows that the adsorption is exothermic. The desorption analysis shows no substantial loss of adsorption site after three trials, indicating higher stability and resilience of the three adsorbents, indicating a strong repeatability of their possible use in adsorption without contaminating the environment. In addition, the chemical attitude and possible donor-acceptor interactions of ERY were assessed by the quantum chemical parameters (QCPs) and NBO analysis performed, at the HF/6-311G** calculations.
