The influence of the potential pulse height square-wave voltammetry (SWV) (i.e., SW amplitude) is studied for a variety quasireversible electrode mechanisms, including simple solution-phase reaction at planar or spherical electrode, solution phase coupled with reversible follow-up chemical reaction, and diffusionless surface confined reaction. kinetics all mechanisms depends critically on amplitude, kinetic region function both frequency-related parameters amplitude. Thus, novel methodology...

Implicit anodic and cathodic current components associated with the real net at a given potential of simple quasireversible electrode reaction can be accurately estimated using basic mathematical modeling within framework Butler-Volmer kinetics. This methodology requires only prior knowledge formal dissolved redox couple, offering direct insight into The proposed approach facilitates unique transformation conventional cyclic voltammogram, allowing replacement common, authentic components....

Energy crisis is the most important issue of current society, which needs to be addressed on a priority base. A number energy sources are under research consideration fulfil modern society. Methanol electro-oxidation one best sources, but still requires electrocatalytically active materials. Different materials, especially metal-organic frameworks (MOFs), have been extensively studied in last few years. This review summarizes recent studies electrocatalytic methanol oxidation reaction,...

Transition metal oxides have garnered attention for the methanol electro‐oxidation reaction owing to their easy availability, high catalytic applicability, and multiple oxidation capabilities. Bimetal‐based catalysts further enhance performance of reaction. In this context, a chrysanthemum‐flower‐like MoO 2 /WO 3 is synthesized through solvothermal annealing strategy. The morphology attests rough surface pores in catalyst, augmenting its area reactions enhancing applicability....

Methanol oxidation stands out as a pivotal solution in addressing the global energy crisis and environmental pollution, owing to its practical applicability, high current density, ready availability of methanol fuel source. To effectively catalyze oxidation, an electrocatalyst is imperious overcome activation barrier. Herein, three‐dimensionally arranged NiSe 2 nanosheet‐based synthesized through facile solvothermal followed by annealing method. The catalyst's porous structure enhances...

In the current study, an evaluation was conducted regarding potential interaction mechanisms occurring between ponatinib ( Pntb ), a tyrosine kinase inhibitor of third‐generation and double‐stranded deoxyribonucleic acid (dsDNA). The aim these studies to elucidate mechanism underlying DNA. This understanding could not only shed light on changes within living organisms but also, in future, facilitate development new drugs for cancer treatment improve their therapeutic effectiveness....

A new voltammetric technique designed as a hybrid between differential pulse and square-wave voltammetry is proposed for the purpose of unifying advantages both techniques, i.e., ability to provide mechanistic information, studying electrode kinetics sluggish very fast reactions, suppress effectively residual background current. Voltammetric modulation consists staircase potential combined with superimposed at end each step. By measuring current step pulse, forward backward components can be...

Recently introduced novel voltammetric and chronoamperometric techniques, derived from square-wave voltammetry (SWV), are being studied for their analytical utility. Three protocols, namely potential-corrected, multi-sampled, cumulative voltammetry, along with chronoamperometry (also known as electrochemical Faradaic spectroscopy), described analytically tested. The evaluation is based on both theoretical empirical approaches, including statistical comparison standard techniques such...

Abstract The kinetics of surface confined electrode reactions alizarin, vitamin B12, and K2 is measured with square‐wave voltammetry over a wide pH interval, by applying the recent methodology for kinetic analysis at constant scan rate [V. Mirceski, D. Guziejewski, K. Lisichkov, Electrochim. Acta ­ 2013 , 114 667–673]. reliability simplicity confirmed. requires peak potential separation forward backward component response as function pulse height (SW amplitude), given frequency (i.e. rate)...

Abstract Reaction medium (1,3-butane-diol) plays a vital role for the final morphology of W-Mo 15 Se 19 electrocatalyst during synthetic strategy based on single-step solvothermal method. Smoothness may govern its electrochemical application. High ECSA (0.055 mF/cm 2 ), low R ct , Tafel slope (99.0 mV/dec), and excellent long-term stability 3600 s attribute to large surface area due negligible agglomeration. delivers current density 1.65 mA/mg at an overpotential 0.65 V (Ag/AgCl) in 0.75 M...

The pesticide diazinon was determined in its insecticidal formulations by square wave adsorptive stripping voltammetry. method of determination is based on the irreversible reduction reaction at hanging mercury drop electrode. optimal signal detected −1.05 V vs. Ag/AgCl Britton–Robinson buffer pH 4.4. Various parameters such as pH, concentration, frequency, amplitude, step potential, accumulation time, and potential were investigated to enhance sensitivity determination. highest response...

A theoretical analysis of reversible and quasireversible electrode reactions a dissolved redox couple under conditions the novel technique differential square-wave voltammetry (DSWV) is presented. The recently introduced as hybrid form between pulse (DPV) (SWV) two most advanced competitive pulse-form voltammetric techniques for purpose unifying their advantages further advancing both in terms analytical performances, mechanistic analysis, kinetics. potential modulation DSWV consists steps...

This paper discusses the electrochemical behavior of antiviral drug Tenofovir (TFV) and its possible applicability towards electroanalytical determination with diverse detection strategies using square-wave voltammetry. Namely, oxidation processes were investigated glassy carbon electrode graphene oxide surface modification (GO/GCE), while reduction processes, related to studied analyte, analyzed at a renewable silver amalgam (Hg(Ag)FE). Scanning electron microscopy imaging confirmed...

Abstract Neonicotinoids, as the fastest-growing class of insecticides, currently account for over 25% global pesticide market. Their effectiveness in controlling a wide range pests that pose threat to croplands, home yards/gardens, and golf course greens cannot be denied. However, extensive use neonicotinoids has resulted significant declines nontarget organisms such pollinators, insects, birds. Furthermore, potential chronic, sublethal effects these compounds on human health remain largely...

Clothianidin, a new generation of pesticide, was determined in spiked tap water, apple juice, and soil by square-wave adsorptive stripping voltammetry. The method determination is based on the hydrogen evolution reaction catalyzed clothianidin at hanging mercury drop electrode. optimal signal detected −1.4 V versus Ag/AgCl citrate buffer pH 2.2. Various parameters such as pH, concentration, frequency, amplitude, step potential, accumulation time, potential were investigated to enhance...

Abstract For the purpose of simplification electrochemical study under conditions square‐wave voltammetry (SWV), a simplified form potential modulation is proposed by replacing staircase ramp with constant potential. The resulting modulation, which could be considered as pulse chronoamperometric experiment (i. e., chronoamperometry), provisionally termed faradaic spectroscopy, considering fact that main tool in kinetic analysis frequency pulses applied. technique illustrated theoretical...