Analytical & Bioanalytical Electrochemistry
Volume:15 Issue: 8, Aug 2023

Materials decay naturally through a process called corrosion in which they react with their surroundings. It is possible to prevent mild steel from corroding in hydrochloric acid (HCl) by applying a variety of corrosion inhibitors. In this work, the novel mononuclear manganese coordination complex [Mn(Hbpz)2(NCS)2] showed promising properties that make it suitable for corrosion prevention applications. In this experiment, different experimental methods were used to evaluate its inhibitory potential. For example, weight loss (WL) showed a 96% reduction in corrosion rate at higher concentrations. EIS was evidence that the concentration effect increases Rct and reduces Cdl. Moreover, the polarization examination demonstrated that C3 is a mixed-type inhibitor. In addition, quantum mechanical and statistical methods were also used, and the effect of temperature was also determined. Besides, thermodynamic equations were used and calculated. The adsorption follows the Langmuir isothermal model and the simulation method confirmed the spontaneous adsorption nature of the complex, which improves the surface characterization results.

Mill scale is a by-product of hot rolling steel generated in a rolling mill and has the potential to be transformed into hematite. Owing to hematite's many uses; mill scale has a high economic value and may be used as a battery anode. The impact of CaCO3 pellet quantity and calcination time on hematite purity, as well as the effect of deposition duration and voltage on coating thickness. The calcination duration has a considerable effect on the purity of the resulting hematite, while the addition of CaCO3 pellets lowered the purity by around 6%. Attaining the thickest hematite coating on an aluminium surface required a 40 V treatment and a deposition time of 30 minutes. Alternately arranged aluminium ions (Al3+) and oxide ions (O2-) form an ionic connection. Whereas aluminium ions on the surface of aluminium are positively charged, oxide ions are negatively charged in order to generate an electrostatic interaction. During the discharge phase, the voltage decreased from 1.02 to 0.70 V. This research contributes to the development of more efficient and effective manufacturing procedures for hematite and its battery anode applications.

In this research project, an electrochemical sensor was developed to sensitively detect oxcarbazepine compound at a new level of glassy carbon using carbon nanotubes. The surface morphology of the resulting modified electrode was determined by field emission scanning electron microscopy technique (SEM). Under optimal conditions, a significant improvement in the electrochemical behavior of oxcarbazepine was observed at the surface of the modified electrode compared to the unmodified electrode. The results show that the electrocatalytic oxidation process of oxcarbazepine on the surface of the modified electrode is controlled by the diffusion process and the electrode process is controlled by surface adsorption. Modified Electrode by carbon nanotubes due to its high conductivity, good stability, ability to increase the electron transfer rate, and finally, the effective interaction of the analyte with the electrode surface increases the sensitivity in measuring oxcarbazepine compound and its electrocatalytic properties as an electrochemical sensor improved analyte drug measurement. Based on this study, the calibration plots to determine Oxcarbazepine concentrations were linear in the range of 2–40 µM (R2= 00.9912), and the detection limits were found to be 1.9 µM. The results indicate that the proposed method is sensitive, selective, fast, and simple for the determination of Oxcarbazepine.

Lithium-ion batteries have emerged as the preferred choice for rechargeable power sources due to their ability to deliver high voltage, high energy density, and minimal self-discharge, making them ideal for electronic devices and energy storage applications. Among the most commonly employed industrial lithium-ion batteries is the 18650 commercial battery, measuring 18x65 mm, renowned for its rechargeable capabilities. Nonetheless, their widespread use faces significant safety challenges when subjected to extreme thermal or electrical stress. This study aims to enhance the safety and electrochemical performance of 18650-type battery cells at room temperature while mitigating the flammability risks associated with their carbonate-based electrolytes by incorporating an eco-friendly additive, vinyl triethoxysilane (VTES). Introducing 5 vol.% VTES into the electrolyte proved to be the optimal composition, resulting in improved cycling performance. This improvement can be attributed to the formation of stable and uniform surface films on both cathode and anode surfaces. These findings underscore the promise of VTES as an additive to enhance the safety and electrochemical performance of lithium-ion batteries, even at an industrial scale. To quantitatively and qualitatively assess the impact and performance of the VTES organic silicon compound, a comprehensive set of thermal and electrochemical analyses, including EDX, SEM, LSV, CV, EIS, TGA/DSC, and SET, were conducted.

Electrochemical methods have become increasingly popular in the pharmaceutical and drug analysis sectors due to their numerous benefits, such as high sensitivity, selectivity, and specificity. Electrochemical-based nanomaterials are adjustable and can be influenced by the type of electrode used and the applied potential. Electroanalytical methods have proven to be a useful analytical technology that has seen increased utility in the pharmaceutical business in recent years. In the last five years, there have been significant developments in the synthesis and use of novel electrochemical sensors in drug analysis. These developments have been driven by advancements in instrumentation and an increased understanding of electrochemical methods. This review concludes the current state-of-the-art in electrochemical sensors for pharmaceutical analysis and future perspectives in this field. We highlight the need for more standardized methods for the determination of biologically important compounds such as dopamine, guanine, adenine, and uric acid using electrochemical sensors and the development of multiplexed sensors for simultaneous analysis of multiple drugs.

The analysis of neodymium and its compounds in various samples is very important, and the application of varied instrumental techniques for this purpose has hence been reported. Accordingly, different electrochemical electrodes have been developed for the analysis of Nd3+ over varied concentration ranges in different matrices. This text tends to offer an overview of these potentiometric instruments with a focus on the structure of the ionophores, as well as the nature and amount of the components used to develop the sensing parts of these electrodes.