Electrochemical doping of bisulfate ions into single wall carbon nanotube (SWNT) bundles has been studied using coulometry, cyclic voltammetry, mass-uptake measurements, and Raman scattering experiments. A spontaneous charge-transfer reaction is observed prior to the application of an electrochemical driving force, in sharp contrast to previous observations in the graphite-H2SO4 system. A mass ...

Thin films of iron(W) hexacyanoferrate(I1) (Prussian Blue) were electrochemically deposited on interdigitated array (IDA) electrodes, yielding systems which can be considered as chemiresistors in sensing alkali metal ion concentrations in an adjacent electrolyte. This is due to the fact that the conductivity of the film being measured by a steady-state current on application of a voltage to the...

Single nanoparticle (NP) electrochemical impacts is a rapidly expanding field of fundamental electrochemistry, with applications from electrocatalysis to electroanalysis. These studies, which involve monitoring the electrochemical (usually current–time, I–t) response when a NP from solution impacts with a collector electrode, have the scope to provide considerable information on the properties ...

been investigated using polarography, cyclic voltammetry, coulometry, a n d product analysis. TPP proceeds by a one-electron transfer to form the anion radical which undergoes cleavage of a phenyl group. The electrochemical reduction of triphenylphosphine (TPP) and triphenylphosphine oxide (TPPO) has The reduction of everal recent papers have been concerned with the S polarography of triphenylp...

Biomass is a sustainable precursor of hard carbons destined for use in sodium-ion batteries. This study explores the synthesis carbon nanosheets (HCNS) from oxidized cork and impact temperature on characteristics. An increase carbonization 1000 to 1500 °C generally leads lower BET specific surface areas (~55 20 m2 g?1) d002 interlayer spacing (~ 4.0 3.7 Å). The effect reflected initial coulombi...

4-(N, NDimethylamino) Phenyl Propenal and Derivatives have been studied over a wide pH range in aqueous and non-aqueous media using platinum foil electrode. Two reductions in acidic medium and one reduction in basic medium take place involving two electrons per reduction. In the first the C=C double bond is reduced, in the second the aldehyde group. In acid media, two-electron process is split ...

Captopril, chemically know as 1-[(2S)-3mercapto-2-methylpropionyl]-L-proline, (CPT) is used therapeutically as an antihypertensive agent [11, 15], which is also prescribed for the treatment of congestive hart failure [6]. Several types of analytical procedures have been proposed for the analysis of captopril in pharmaceuticals formulations. These procedures include capillary electrophoresis [13...

This paper gives an overview of the newest developments of polymeric membrane ion-selective electrodes. A short essence of the underlying theory is given, emphasizing how the electromotive force may be used to assess binding constants of the ionophore, and how the selectivity and detection limit are related to the underlying membrane processes. The recent developments in lowering the detection ...

Abstract Background Humic substances can be considered as polyelectrolytes with supramolecular character and complicated behaviour in water environment. The fractions of humic dissolved are the most active ones determinative for their functioning nature, where proton-binding dissociation ability play a crucial role. fulvic acids affected by different circumstances including concentration which ...