Results 111 to 120 of about 454 (131)
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Production of Magnetic Nanopowders by Pulsed Sonoelectrochemistry
MRS Proceedings, 1996ABSTRACTSonoelectrochemistry, or pulsed electrodeposition at high current density in presence of high intensity ultrasound, is used to produce magnetic powders with a mean diameter in the range of 100 nm. Pure iron, cobalt and nickel powders are produced together with their binary and ternary alloys.
Delplancke, Jean-Luc +3 more
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Thin Layer Sonoelectrochemistry in Aqueous and Non-Aqueous Systems
ECS Meeting Abstracts, 2016In thin layer sonoelectrochemistry, ultrasonic sound waves introduced into an electrolyte layer increases the rates of heterogeneous processes [1, 2]. From previous studies of thin layer sonoelectrochemistry, the rates of heterogeneous electron transfer, oxygen reduction reaction (ORR), and methanol electrolysis were facilitated under sonication.
N. Rathuwadu, P. Dey, J. Leddy
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ChemInform Abstract: An Introduction to Sonoelectrochemistry
ChemInform, 2013AbstractReview: 84 refs.
Timothy J. Mason, Veronica Saez Bernal
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Catalysis of the Oxygen Reduction Reaction: Thin Layer Sonoelectrochemistry
ECS Meeting Abstracts, 2014The oxygen reduction reaction (ORR) is a multi-electron and -proton transfer mechanism. In acidic solution, the slow step is typically taken as the first electron transfer. O2 + e + H+ ⇌HO2 Even with platinum electrocatalysts, ORR kinetics impose parasitic losses of ~30 % in proton exchange membrane (PEM ...
Chester G. Duda, J. Leddy
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Cavitation, shock waves and the invasive nature of sonoelectrochemistry.
The Journal of Physical Chemistry B, 2005The invasive nature of electrodes placed into sound fields is examined. In particular, perturbations of the sound field due to the presence of the electrode support are explored. The effect of an electrode on the drive sound field (at approximately 23 kHz) is shown to be negligible under the conditions investigated in this paper. However, scattering of
P. Birkin +3 more
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Electrochemical Quartz Crystal Microbalance Technique in Sonoelectrochemistry
ECS Transactions, 2009The influence of the experimental conditions on the operation of a quartz crystal microbalance in an ultrasonic field was studied in water and different Cu electrolytes. An increase of the ultrasonic intensity and a decreasing distance between the ultrasonic horn tip and the surface of the quartz resonator caused an increase in signal noise and a ...
Oliver Schneider +2 more
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Acta Materialia, 2010
Abstract This study describes synthesis of Fe–Cr alloy nanoparticles by using a method which couples electrodeposition of metals with the employment of high power ultrasound. The production of alloyed nanoparticles was performed using a 20 kHz titanium alloy horn ultrasound generator, a “sonoelectrode” generating short current pulses ( t ON ...
V. Zin, M. Dabalà
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Abstract This study describes synthesis of Fe–Cr alloy nanoparticles by using a method which couples electrodeposition of metals with the employment of high power ultrasound. The production of alloyed nanoparticles was performed using a 20 kHz titanium alloy horn ultrasound generator, a “sonoelectrode” generating short current pulses ( t ON ...
V. Zin, M. Dabalà
semanticscholar +2 more sources
Organic Sonoelectrochemistry on Mercury Pool Electrode
Collection of Czechoslovak Chemical Communications, 2000So far, the influence of sonication on the electrolytic current was studied only at solid or rather miniaturized mercury electrodes. The presented paper reports on sonoelectrochemical experiments at a liquid mercury pool electrode. Two sonoelectrochemical cells have been developed and tested.
Jiří Klíma, Jiří Ludvík
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Journal of Electroanalytical Chemistry, 1995
The voltammograms recorded with ultrasound at a stationary electrode present a sigmoidal shape and their limiting current is the sum of steady-state and transient components. A semi-quantitative description of the integrated transient component is proposed in the case of the one-electron reduction of methyl viologen in acetonitrile at a platinum disc ...
Chantal Degrand
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The voltammograms recorded with ultrasound at a stationary electrode present a sigmoidal shape and their limiting current is the sum of steady-state and transient components. A semi-quantitative description of the integrated transient component is proposed in the case of the one-electron reduction of methyl viologen in acetonitrile at a platinum disc ...
Chantal Degrand
exaly +2 more sources