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Öğe Computational and experimental studies on the corrosion inhibition performance of an aerial extract of Cnicus Benedictus weed on the acidic corrosion of mild steel(Elsevier, 2022) Thakur, Abhinay; Kaya, Savas; Abousalem, A. S.; Sharma, Shveta; Ganjoo, Richika; Assad, Humira; Kumar, AshishThe corrosion inhibition investigation of aerial extract of Cnicus Benedictus, a weed referring to the Asteraceae family has been evaluated on the mild steel corrosion in 0.5 M HCl with the employment of the weight-loss method, potentiodynamic polarization measurements (PDP) and electrochemical impedance spectroscopy (EIS) techniques. This investigation demonstrated Cnicus Benedictus extract (CBE) as a green and sustainable mild steel corrosion inhibitor in 0.5 M HCl media exhibiting an inhibition efficacy of 92.45% at 1000 ppm. With the increased concentration of CBE, the value of i(corr )and corrosion rate (C-R) decreased significantly from 7.4114 to 0.97438, revealing the protective effect of CBE on mild steel. The deposition of a highly defensive coating on the mild steel surface was demonstrated by the contact angle measurements. Additionally, the increase in the K(ads )values indicated a stronger interaction between the inhibitor molecules and metal surface. Furthermore, density functional theory (DFT) and Monte Carlo simulations have been utilized to validate the significant inhibition characteristic attained by the experimental study and to suggest an adsorption mechanism.(C) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.Öğe Coordination Polymers as Corrosion Inhibitors(American Chemical Society, 2022) Thakur, Abhinay; Assad, Humira; Sharma, Shveta; Ganjoo, Richika; Kaya, Savas; Kumar, AshishCorrosion is a destructive phenomenon that has catastrophic outcomes on technical and commercial applications, specifically in oil and gas-related enterprises. Thus, mitigating metallic corrosion is a crucial need of technological, economic, environmental and elegant need that could save huge money on equipment, machinery and construction. Polymers have become a preferred candidate for the corrosion inhibition of numerous metals/alloys in various corrosive media due to their ability to form complexes with metal ions that occupy a large area by their functional groups, thereby preventing the metal surface from aggressive ions existing in the corrosive medium. For instance, it is remarkable to attain the inhibition efficacy of 93% at an optimum concentration of 800 ppm at 50 °C. Taking into account such extreme corrosion inhibiting efficacy of coordination polymers; herein, in this chapter, we discuss the effects of novel coordination polymers such as polyacrylamide (PACM), cerium(III)-melamine coordination polymer (CMCP), copper(I) coordination polymer:1H-benzotriazole: poly[l3-benzotria- zolato-j3N1:N2:N3-copper(I)], etc., on the control or reduction of corrosion. Additionally, the impact of temperature on the corrosion rate will be discussed along with the relative inhibition mechanisms. © 2022 American Chemical SocietyÖğe Electrochemical and computational investigations of the Thysanolaena latifolia leaves extract: An eco-benign solution for the corrosion mitigation of mild steel(Elsevier, 2023) Thakur, Abhinay; Kumar, Ashish; Kaya, Savas; Benhiba, Fouad; Sharma, Shveta; Ganjoo, Richika; Assad, HumiraThe development of eco-benign corrosion inhibitors is gaining increased attention due to the non -biodegradability and toxic effects of conventional inhibitors. In this study, the anti-corrosive efficacy of Thysa-nolaena latifolia leaves extract (TLLE) has been evaluated on mild steel in an acidic solution (0.5 M HCl) by employing various approaches including gravimetric assessment, electrochemical measurements, scanning electron microscopy and energy dispersive X-ray spectroscopy. The outcomes demonstrated that with the increased concentration of TLLE from 50 ppm to 1000 ppm, the inhibition efficiency (IE%) elevated up to 93.90 % and the corrosion rate decreased significantly from 2.513 mm/yr to 0.203 mm/yr at 298 K. Moreover, it was revealed that at a higher concentration (1000 ppm), the Rp values increased from 30.784 ohm to 157.83 ohm with an Rct in value of 159.627 ohm cm2 suggesting the defensive film formation by TLLE molecules over the metallic surface. The quantum chemical analytics further underpinned the empirical findings, showing a high Delta E(eV) value of 0.239 and interaction and binding energies of-995.45 and 995.45 for TLLE molecules upon Fe (110) substrate. The findings indicate that TLLE has a promising prospect as an eco-benign and efficient inhibitor for preventing the corrosion of mild steel in corrosive environments.Öğe Insight into the Corrosion Inhibition Behavior of Ionic Liquids for Metals and Their Alloys in Corrosive Media: A Comprehensive Review(American Institute of Physics Inc., 2023) Thakur, Abhinay; Bharmal, Ayan; Sharma, Shveta; Ganjoo, Richika; Assad, Humira; Kaya, Savas; Kumar, AshishOwing to the hazardous effects of frequently utilized corrosion inhibitors, as well as the critical health and safety laws governing their usage and storage, there is huge enthusiasm in finding efficient non-hazardous substitutes. Ionic liquids (ILs) have gotten a lot of attention in the last decade, owing to their intriguing qualities like non-inflammability, low volatility, less hazardous, superior thermal resilience, and capability for getting easily adsorb on the surface of the metal. This review article includes a compendium of recent scientific articles and reviews on ILs as corrosion inhibitors (mostly from 2015 to 2021). This article provides an overview of the utilization of ILs as corrosion inhibitors. Additionally, corrosion inhibitors are reviewed in detail, as well as their latest trends and advancements. © 2023 American Institute of Physics Inc.. All rights reserved.Öğe Overview and fundamentals of polymer nanocomposites(Elsevier, 2023) Assad, Humira; Sharma, Shveta; Kaya, Savas; Sharma, Praveen Kumar; Kumar, AshishMaterial science has grown in popularity and use as a result of a strong need for composite materials that combine the benefits of both components. There has been a surge of attention toward the tailoring the structural features of materials on a nanometer scale during the last few years all over the world. Nanocomposites materials have been extensively researched in the scientific literature because they provide significant property benefits even when the nanoparticle proportion is minimal. Incorporating inorganic nanoparticles into polymer matrices is a strong method for imparting their intriguing and complementary features to polymer products. Polymer nanocomposites formulation is an important part of polymer nanotechnology, and it has advanced in development owing to their novel characteristics after nanoparticle integration. After incorporating a range of nanoparticles that vary in form, shape, surface area, and chemical organization, many nanocomposites consisting of synthetic polymers and/or biopolymers have been explored. Thus, polymer composites have risen to the top of the list of technologically important materials due to their vast range of uses. In this chapter, we’ll look at some examples of nanocomposites that can be made using different methods such as in situ polymerization, electrospinning, solution casting, melt extrusion, etc. This chapter will provide an overview of processing and characterization techniques, as well as physical, chemical, biological, and rheological features of polymer nanocomposites (PNCs). To encourage future work on the creation of ever more promising materials, the current problems and possible applications of these composites are presented. Finally, a full assessment of recent developments and patents in the field is offered, gradually demonstrating the prospects for the establishment of a variety of polymer nanocomposite materials. © 2023 Elsevier Ltd. All rights reserved.Öğe Recent Progress in the Application of Electrochemically Rechargeable Metal-air Batteries: A Focus Review(American Institute of Physics Inc., 2023) Nidhi; Thakur, Abhinay; Fatma, Ishrat; Assad, Humira; Sharma, Shveta; Ganjoo, Richika; Kaya, SavasThe metal-air battery has become the primary power source since its invention in 1840 by Smee. Maiche demonstrated functional primary Zn–air batteries utilizing a porous platinized carbon cathode in 1878, which was the outcome of several outstanding scientist's and engineers' studies and endeavors. Owing to its high density, very low self-discharge, extremely lengthy lifetime, long cycling performances, and easy maintenance, metal-air batteries are effective energy storage systems for multifunctional electronic devices, electrical power grids, and electrified transportation such as EVs. Considering the fact that this topic is quickly growing and recruiting a significant number of researchers, the construction of next-generation metal-air batteries still face significant obstacles. A number of novel chemistries have been developed, resulting in improved energy density, long-term storage capacity, stability, and sustainability. The goal of this review is to initiate the basics and current advances in the field of metal-air batteries, as well as the fundamentals behind their functionality along with its components. © 2023 American Institute of Physics Inc.. All rights reserved.Öğe Study of Inhibitive Property of Pipotiazine Drug for Mild Steel in Acidic Medium(American Institute of Physics Inc., 2023) Sharma, Shveta; Ganjoo, Richika; Thakur, Abhinay; Assad, Humira; Kaya, Savas; Kumar, AshishThe corrosion inhibitory activity of the Pipotiazine drug molecule was studied on mild steel in 1M HCl with variety of research approaches as weight loss and electrochemical analysis including potentiodynamic polarization and electrochemical impedance spectroscopy techniques. Drug molecule successfully inhibit the corrosion of metallic sample. Results revealed the increased inhibition efficiency with increased concentration of Pipotiazine and at a concentration of 1000 ppm, the maximum inhibition efficiency was reached at 73% and inhibitor showed a mixed type of behavior. Protection of metallic sample was further validated with the scanning electron microscopy. Surface study also confirmed the reduction in roughness, on the addition of Pipotiazine drug molecule. © 2023 American Institute of Physics Inc.. All rights reserved.Öğe Surface characterization for corrosion monitoring(Elsevier, 2023) Sharma, Shveta; Ganjoo, Richika; Assad, Humira; Kaya, Savas; Kumar, AshishCorrosion is a common problem in many sectors that use metallic structures. Corrosion affects a wide range of technical materials, including microelectronics, orthopedic implants, large civil infrastructure projects, and the things we use on a daily basis. This issue leads to significant material and economic losses as a result of machinery replacements or plant shutdowns for maintenance. Even it poses a significant hazard to human safety and health. Numerous methods have been devised to combat the problem. A wide range of techniques like weight loss, electrochemical analysis, theoretical analysis, and surface morphological techniques are employed to assess the level of protection. The main objective of this chapter is to discuss the various conventional surface morphological techniques like scanning electron microscopy, atomic force microscopy, X-ray diffraction spectroscopy, X-ray photoelectron spectroscopy (XPS) along with some new fast-growing techniques like scanning electrochemical microscopy, etc. employed in corrosion study will be discussed. © 2023 Elsevier Inc. All rights reserved.
