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In this study, an electrode, composed of molybdenum disulfide/activated carbon, derived from shallots (MoS2/AC) to form composites, was manufactured using a simple one-step hydrothermal process and doctor blading approach onto a fluorine-doped tin oxide (FTO) substrate. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to, respectively, investigate the crystalline structure and morphology of the samples. MoS2/AC has a large surface area, as seen in scanning electron microscopy (SEM) imagery, which is a useful attribute for counter electrodes (CEs) in dye-sensitized solar cells (DSSC). Furthermore, cyclic voltammetry (CV), Tafel polarization curves, and electrochemical impedance (EIS) spectra were used to study the electrocatalytic activity of the MoS2/AC electrode. This electrode exhibits a high electrocatalytic activity for the reduction of triiodide ( I 3 - ) to iodide ( I - ) and a low charge transfer resistance at the electrode/electrolyte interface, similar to a Pt electrode. As a result, MoS2/AC has good potential as an electrocatalyst for dye-sensitized solar cells, supercapacitors, gas sensors, and energy storage, among other applications. [ABSTRACT FROM AUTHOR]

N-CDs, as a novel and eco-friendly inhibitor, was synthesized easily by hydrothermal carbonization technique aiming to inhibit mild steel (MS) corrosion in 1 mol/L HCl. XRD, TEM, SEM, FTIR, UV-vis spectrophotometer and photoluminescence (PL) were utilized to characterize N-CDs. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques along with the complementary surface studies were combined to investigate the corrosion inhibition capability of N-CDs for MS. N-CDs were found nanometer-sized (≈ 4 nm) with quasi-spherical morphology and high crystallinity. Inhibition efficiency, directly proportional to concentration but inversely with temperature, was measured as high as 96.73% (PDP) and 95.21% (EIS) at 200 mg/L. Inhibition mechanism refered mainly to adsorption process that good obeyed Langmuir adsorption isotherm. The surface studies, quantitatively verified by EDX, showed a smoother surface of MS in presence of the N-CDs. Furthermore, the UV-visible spectroscopy effectively revealed the complexations between iron and metal surfaces. [ABSTRACT FROM AUTHOR]

The current work reports the effect of palladium nanoparticles and their nanogeometry on the redox electrochemistry of tetracyanoquinodimethane (TCNQ) modified electrodes. Palladium nanoparticles were prepared with different concentrations of 3-aminopropyltrimethoxysilane and calcination at 600 °C to yield PdNP-1 and PdNP-2 of the average size of 1 µm and 12 nm, respectively. The palladium nanoparticles were characterized by TEM, XRD, and AFM techniques. The electrochemical excellence of ascorbic acid was resoluted using cyclic voltammetry amperometry, electrochemical impedance spectroscopy, and differential pulse voltammetry. A limit of detection (LOD) was found to be 51.61, 44.38 and 30.10 µM over a linear range from 50 to 625 µM for modified CPE/TCNQ, CPE/TCNQ-PdNP-1, and CPE/TCNQ-PdNP-2, respectively, determined by amperometric analysis for ascorbic acid at pH 7. The synergistic effect of Palladium and π* orbital of TCNQ played an important role in the enhancement of the catalytic activity of the modified electrode. The modified electrode showed good sensitivity, stability, and reproducibility which was confirmed by cyclic voltammetry, and amperometric analysis. The charge transfer resistance value also indicated that the modified electrode hads good electrocatalytic activity. [ABSTRACT FROM AUTHOR]

This document is a correction notice for an article titled "Incorporation of carbon nanotubes in sulfide-based binary composite to enhance the storage performance of supercapattery devices" published in the Journal of Applied Electrochemistry. The correction addresses an error in Figure 2 of the original article, specifically the missing JSPD card numbers and indexing of peaks in Figure 2a. The corrected version of Figure 2 is provided in this correction, and it is stated that this error does not impact the conclusions or findings of the article. The authors of the article are Muhammad Waqas Iqbal, Musab Hammas Khan, Amir Muhammad Afzal, Haseebul Hassan, Huda A. Alzahrani, and Sikandar Aftab. [Extracted from the article]

An epoxy-functionalized beta type nanozeolite (BEA)/graphene oxide nanocomposite modified glassy carbon electrode (GCE/BEA/APTMS/GA/GO/NF) has been created for the differential pulse voltammetric determination of bisphenol E (BPE). The modified electrode presented an enhanced current response in comparison with bare GCE. A linear dependence of anodic peak current (Ip) and scan rate (ν) was observed, which showed that the electrochemical process was adsorption-controlled. Differential pulse voltammetry (DPV) was employed and optimized for the sensitive determination of BPE. Under the optimized conditions, the anodic peak current was linearly proportional to BPE concentration in the range between 0.07 and 4.81 µM, with a correlation coefficient of 0.995 and limit of detection 0.056 μM (S/N = 3). The electrode showed good repeatability and storage stability, and a low response to interfering compounds. Comparison was made to the determination of bisphenol A. To confirm the electrode analytical performance, recovery tests were performed, and deviations lower than 10% were found. The BEA zeolite-GO nanocomposite proved to be a promising sensing platform for bisphenol determination. [ABSTRACT FROM AUTHOR]

The gallium electrowinning process is always accompanied by hydrogen evolution reaction that results in low current efficiency (CE). In this manuscript, cyclic voltammetry and chronoamperometry studies were carried out to investigate the gallium cathode behavior under various conditions and explore the parameter that is beneficial to improve the CE. The CE of the lead and copper cathodes was higher, while gallium deposited on the titanium, SUS316, and SUS304 cathodes was readily separated. Increasing the overpotential and gallium concentration or decreasing the pH within a certain range was all beneficial to improve the CE, while the temperature had no significant effect on the CE. Kinetic studies of gallium electrodeposition were carried out. The gallium electrodeposition process was determined as mixed control and forced convection is expected to further improve the CE. The apparent activation energy and kinetic current from the electrochemical reactions were determined to be 23.335 kJ mol−1 and 47.6 mA, respectively. [ABSTRACT FROM AUTHOR]

The C-rate capability of 230 nm- and 16 nm-thin ion-beam sputter-deposited amorphous carbon films, an interesting class of carbonaceous material for lithium-ion batteries, was investigated up to Li-platting. Stepwise ascending and descending constant Li+ currents after each fifth cycle, followed by hundreds of cycles with the highest current were applied. The carbon films show similar cycling with irreversible losses during the first five cycles, followed by reversible cycling with a capacity close to that of graphite. The capacity is significantly lower at high currents; however, it is restored for subsequent cycling again at low currents. Differential charge and differential capacity curves reveal three Li+ uptake and three Li+ release peaks located between 0 and 3 V. Irreversible as well as reversible Li bonding can be associated with all these peaks. Irreversibly bonded Li can be found at the surface (solid electrolyte interphase) and in the bulk of the carbon films (Li trapping). Reversible Li bonding might be possible inside the carbon films in graphite-like nano-domains and at defects. The thinner film reveals a more pseudo-capacitive cycling behavior, pointing to enhanced Li kinetics. [ABSTRACT FROM AUTHOR]

In this paper, a carbon black-polytetrafluoroethylene (C-PTEE) cathode, made of carbon black and PTFE, was used to electroactive persulfate (PS) for the degradation of the metronidazole (MNZ) in wastewater. The cathode performance and operating conditions were optimized by single-factor experiments. When the C/PTFE ratio was 1:1, the pressure was 15 MPa, and the calcining temperature was 300℃, 100 mg L−1 MNZ was completely degraded in 120 min. The effect of electrolytes on the degradation of MNZ was investigated. It was found that the reactive oxygen species (ROS) generated by the reaction of electrolytes in the NaCl and Na2SO4 systems could achieve the complete removal of MNZ, and the removal efficiency was much higher than that of the NaNO3 system. The operating factors on the removal of MNZ were invested, and 99.8% of MNZ was removed in 120 min at conditions of pH = 4, j = 100 mA cm−2, [PS] = 58 mmol L−1, and [MNZ] = 100 mg L−1. Hydroxyl radicals (·OH) and sulfate radicals(·SO4−) were detected in the persulfate system by electron spin resonance (ESR). Meanwhile, it is found that electron transfer, ·SO4−, and ·OH are attributed to the removal of MNZ detected by the free radical quenching experiment, and their contribution to the removal of MNZ was 27.8%, 22.3%, and 49.9%, respectively. Three possible degradation paths of MNZ were proposed, and ECOSAR was used to predict the toxicity of intermediates degraded by MNZ. The results showed that some intermediates of MNZ were more toxic than MNZ but eventually became non-toxic inorganic substances with the process of degradation.In this study, a carbon black-polytetrafluoroethylene (C-PTFE) cathode was prepared to electroactive persulfate to treat metronidazole (MNZ) pharmaceutical wastewater. The conditions of electrode preparation, operation factors and the degradation mechanism of MNZ were investigated, and the energy consumption of this system was comprehensively evaluated, aiming to guide the industrial-scale application.Graphical abstract: In this paper, a carbon black-polytetrafluoroethylene (C-PTEE) cathode, made of carbon black and PTFE, was used to electroactive persulfate (PS) for the degradation of the metronidazole (MNZ) in wastewater. The cathode performance and operating conditions were optimized by single-factor experiments. When the C/PTFE ratio was 1:1, the pressure was 15 MPa, and the calcining temperature was 300℃, 100 mg L−1 MNZ was completely degraded in 120 min. The effect of electrolytes on the degradation of MNZ was investigated. It was found that the reactive oxygen species (ROS) generated by the reaction of electrolytes in the NaCl and Na2SO4 systems could achieve the complete removal of MNZ, and the removal efficiency was much higher than that of the NaNO3 system. The operating factors on the removal of MNZ were invested, and 99.8% of MNZ was removed in 120 min at conditions of pH = 4, j = 100 mA cm−2, [PS] = 58 mmol L−1, and [MNZ] = 100 mg L−1. Hydroxyl radicals (·OH) and sulfate radicals(·SO4−) were detected in the persulfate system by electron spin resonance (ESR). Meanwhile, it is found that electron transfer, ·SO4−, and ·OH are attributed to the removal of MNZ detected by the free radical quenching experiment, and their contribution to the removal of MNZ was 27.8%, 22.3%, and 49.9%, respectively. Three possible degradation paths of MNZ were proposed, and ECOSAR was used to predict the toxicity of intermediates degraded by MNZ. The results showed that some intermediates of MNZ were more toxic than MNZ but eventually became non-toxic inorganic substances with the process of degradation.In this study, a carbon black-polytetrafluoroethylene (C-PTFE) cathode was prepared to electroactive persulfate to treat metronidazole (MNZ) pharmaceutical wastewater. The conditions of electrode preparation, operation factors and the degradation mechanism of MNZ were investigated, and the energy consumption of this system was comprehensively evaluated, aiming to guide the industrial-scale application. [ABSTRACT FROM AUTHOR]

Rechargeable batteries such as lithium-ion batteries (LIBs) are prevalent in everyday life and can be found in most electronic devices. Their usage is set to drastically increase in the coming years due to the demand for more environmentally friendly and sustainable power sources. Thus, an understanding of the behaviours of the electrode materials is essential. In this work, the effects of different cycling regimes on single-crystal and polycrystalline NMC811 pouch cells are studied via electrochemical impedance spectroscopy (EIS). By using the non-destructive methodology of EIS alone, it is shown that single-crystal NMC811 pouch cells have superior battery performance characteristics compared to polycrystalline NMC811 pouch cells. This is thought to be due to the polycrystalline NMC electrodes being placed under uneven mechanical strain during repeated cycling and developing weak points which become micro-fractures. Use of such non-destructive methods is economically favourable to the industrial battery manufacturing sector as it reduces scrap costs. [ABSTRACT FROM AUTHOR]

The Correction Notice in the Journal of Applied Electrochemistry addresses errors in the original article titled "Incorporation of nickel particles into a polyaniline thin film for non-enzymatic glucose sensing in alkaline medium." The corrections include fixing the misspelling of co-author Meriem Messaoudi's name and updating the affiliation details for authors M. Saeed Akhtar and M. A. Saeed. The corrected version of the article is now available online. The publisher, Springer Nature, maintains neutrality regarding jurisdictional claims and institutional affiliations. [Extracted from the article]

Bisphenol A (BPA), a known endocrine-disrupting chemical, has been the subject of widespread bans in food packaging and baby bottles. Due to the potential health risks associated with BPA exposure, precise detection methods are crucial for toxicity assessments, ensuring food safety, and monitoring environmental pollutants. To address this imperative, we have developed an electrochemical sensor utilizing a composite material composed of copper-organic framework (Cu-MOF), cetyltrimethylammonium bromide (CTAB), and graphene (GN). This modified composite, known as CTAB-GN-Cu-MOF, was successfully synthesized and characterized via SEM, FT-IR, XPS, XRD, Zeta, and Size analyses. The integration of Cu-MOF, CTAB, and GN resulted in a synergistic effect, enhancing the electron transport rate and accumulation efficiency for BPA. This technological advancement led to increased signals in differential pulse voltammetry and a substantial electroactive surface area (0.031 cm2). The sensor exhibited a linear response range from 0.100 to 800 μmol L−1 with a detection limit of 35.0 nmol L−1 (signal-to-noise ratio of 3). The sensitivity was measured at 0.890 μA μM−1 cm−2 within the concentration range of 25.0–800 μmol L−1 and 8.87 μA μmol−1 cm−2 within the range of 0.10–10.0 μmol L−1. The device demonstrated stable and satisfactory recovery rates between 96.56% and 103.88% when detecting BPA in various plastic samples, highlighting its potential for practical applications.An electrochemical sensing platform with good performance based on a CTAB-GN-Cu-MOF modified electrode was fabricated in this paper for simultaneous detection of Bisphenol A (BPA). This modified composite, CTAB-GN-Cu-MOF, was successfully synthesized and characterized via SEM, FT-IR, XPS, XRD, Zeta, and Size analyses. The integration of Cu-MOF, CTAB, and GN resulted in a synergistic effect, enhancing the electron transport rate and accumulation efficiency for BPA. This technological advancement increased signals in differential pulse voltammetry and a substantial electroactive surface area (0.031 cm2). The sensor exhibited a linear response range from 0.100 to 800 μmol L−1 with a detection limit of 35.0 nmol L−1. The device demonstrated stable and satisfactory recovery rates between 96.56% and 103.88% when detecting BPA in various plastic samples, highlighting its potential for practical applications.Graphical Abstract: Bisphenol A (BPA), a known endocrine-disrupting chemical, has been the subject of widespread bans in food packaging and baby bottles. Due to the potential health risks associated with BPA exposure, precise detection methods are crucial for toxicity assessments, ensuring food safety, and monitoring environmental pollutants. To address this imperative, we have developed an electrochemical sensor utilizing a composite material composed of copper-organic framework (Cu-MOF), cetyltrimethylammonium bromide (CTAB), and graphene (GN). This modified composite, known as CTAB-GN-Cu-MOF, was successfully synthesized and characterized via SEM, FT-IR, XPS, XRD, Zeta, and Size analyses. The integration of Cu-MOF, CTAB, and GN resulted in a synergistic effect, enhancing the electron transport rate and accumulation efficiency for BPA. This technological advancement led to increased signals in differential pulse voltammetry and a substantial electroactive surface area (0.031 cm2). The sensor exhibited a linear response range from 0.100 to 800 μmol L−1 with a detection limit of 35.0 nmol L−1 (signal-to-noise ratio of 3). The sensitivity was measured at 0.890 μA μM−1 cm−2 within the concentration range of 25.0–800 μmol L−1 and 8.87 μA μmol−1 cm−2 within the range of 0.10–10.0 μmol L−1. The device demonstrated stable and satisfactory recovery rates between 96.56% and 103.88% when detecting BPA in various plastic samples, highlighting its potential for practical applications.An electrochemical sensing platform with good performance based on a CTAB-GN-Cu-MOF modified electrode was fabricated in this paper for simultaneous detection of Bisphenol A (BPA). This modified composite, CTAB-GN-Cu-MOF, was successfully synthesized and characterized via SEM, FT-IR, XPS, XRD, Zeta, and Size analyses. The integration of Cu-MOF, CTAB, and GN resulted in a synergistic effect, enhancing the electron transport rate and accumulation efficiency for BPA. This technological advancement increased signals in differential pulse voltammetry and a substantial electroactive surface area (0.031 cm2). The sensor exhibited a linear response range from 0.100 to 800 μmol L−1 with a detection limit of 35.0 nmol L−1. The device demonstrated stable and satisfactory recovery rates between 96.56% and 103.88% when detecting BPA in various plastic samples, highlighting its potential for practical applications. [ABSTRACT FROM AUTHOR]

This document is a correction notice for an article titled "Synergetic electrochemical performance of Ni-Mn sulfide-based binary electrode material for supercapattery devices" published in the Journal of Applied Electrochemistry. The correction addresses an error in Figure 1 (Schematic diagram) and provides the correct version of the figure with its caption. The original article has been corrected. The publisher, Springer Nature, maintains a neutral stance on jurisdictional claims and institutional affiliations. The authors of the article are Muhammad Imran, Muhammad Waqas Iqbal, Amir Muhammad Afzal, Mian Muhammad Faisal, and Huda A. Alzahrani. [Extracted from the article]

The detection of biologically important metal ions such as Cu(II) and Pb(II) ions using an electrochemical approach at sensitive level is gaining great attention to reveal the health conditions of patients with serious diseases such as rickets, bone deterioration, and heart disease that are associated with these metal ions as well as environmental hazards. Thus, rapid and efficient detection methods for these metal ions are in great demand. In this study, we developed an ideal protocol using silver metal–organic framework (Ag@MOF) nanoparticles for the detection of Cu(II) and Pb(II) metal ions. Ag@MOF was synthesized by a reflux method, and the working electrode was prepared by coating Ag@MOF onto ITO glass. Compared with the bare ITO electrode, the Ag@MOF/ITO working electrode exhibited a more sensitive electrochemical performance for the detection of Cu(II) and Pb(II) metal ions through the complexation between the inner core hydroxyl groups of Ag@MOF and the metal ions. The crystallographic and structural analyses of Ag@MOF were carried out by X-ray diffraction analysis and Fourier transform infrared spectroscopy, while morphological analysis was performed by high-resolution transmission electron microscopy and field-emission scanning electron microscopy. X-ray photoelectron spectroscopy was performed to investigate the surface electronic states of silver in Ag@MOF. The cyclic voltammetry results showed that Cu(II) and Pb(II) metal ions can be detected using the Ag@MOF working electrode, which exhibited a more sensitive performance compared with the bare ITO working electrode. Our study shows that the developed electrochemical sensor is ideal for the detection of various metal ions. [ABSTRACT FROM AUTHOR]