Generation of crack is accompanied by generation of electric charges and mechanical vibrations. Electric charges on the crack walls are sources of electric voltage on electrodes (EME signal) and mechanical vibrations generate AE signal. The electric charges located on the cracks walls constitute an electric dipole or quadrupole system. Experimentally we have observed two different type of EME s...

Abstract The nanostructured cyclically refreshable liquid amalgam film silver-based electrode (R-AgLAFE) was applied to study of the Bi(III) process in presence 2-thiocytosine and selected ionic surfactants. application voltammetrictechniques (SWV, CV, DC), as well electrochemical impedance spectroscopy (EIS) allowed determination kinetic which turn, defined catalytic effect also their correlat...

The electrode potential constitutes a dynamical variable whenever an electrode is resistively coupled to the electric circuit. We show that at the nanoscale, the discreteness and stochasticity of an electron transfer event causes fluctuations of the electrode potential that render all elementary electrochemical reactions to be faster on a nanoelectrode than predicted by the macroscopic (Butler-...

The solution phase transport and direct electrode kinetics of electro-enzymes are described in terms of a simple model in which the steady state reaction/diffusion equation for enzyme is solved subject to physically realistic boundary conditions. Two physically realizable situations are described: the semi infinite and the membrane bounded case. Limiting expressions for the reaction flux are de...

The kinetics of H sorption in a thick plate Pd H electrode in cyclic voltammetry (CV) are studied by numerical methods and the effects of various parameters on the peak potential, peak current and hydrogen concentration are discussed. We find that the hydrogen concentration in PdHx is much less than the equilibrium value and give a simple criterion for the existence of phases occurring during C...

Coupled electron and proton transport are an integral part of non-gassing electro-osmotic pumps (EOP). The kinetics of the electrode limits the kinetics of the electron transfer and hence the flow. This is observed in the present study with newly synthesized graphitic carbon covalently coupled to poly(anthraquinone) (PAQ). When EOP with identical electrodes were assembled, proton shuttle mainta...

Electro-conversion of carbon dioxide (CO2) into valuable chemicals is an efficient method to deal with excessive CO2 in the atmosphere. However, undesirable reaction kinetics bulk solution strongly limit current density, and thus it incompetent market promotion. Flow cell technology provides insight uplifting density. As flow configuration, membrane electrode assembly (MEA) has been proposed pr...

The study presents kinetics of degradation and mineralization an anti-epileptic drug Lamotrigine (LAM) in the aqueous matrix by electrochemical advanced oxidation process (EAOP) on Ti/DSA (Ta2O5-Ir2O5) Stainless Steel (SS) anodes using sodium sulphate as supporting electrolyte. On both anodes, kinetic behaviour was pseudo-first-order for well LAM. anode, maximum LAM 75.42% observed at associate...

Malaria vector mosquito species rely on a handful of specific pheromones for mating; one them, sulcatone (6-methyl-5-hepten-2-one), is also found in human exudation. Therefore, complete understanding the insect’s olfaction, and rapid real-time methods odorant detection, are required. Here, we mimic recognition nerve cells an antenna with synthetic graphene-based bio-electro-interfacial receptor...