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The Power of Ultrasound in Electrochemistry

Contact Prof. Bruno G. Pollet

What is Sonoelectrochemistry?

The use of ultrasound in electrochemistry was first reported in the early 20th century and is nowadays a new exciting and promising subject area. Considerable work has been carried out by researchers from all over the world in which ultrasound has been applied to various electrochemical processes which led to several industrial applications and numerous publications in Engineering and Scientific journals. Like Sonochemistry (ultrasound with chemistry), the use of ultrasound in electrochemistry went through a period of neglect until the 1980’s when ultrasonic cleaning baths and ultrasonic probes became more available. Consequently, there has been an upsurge of interests in the use of Sonoelectrochemistry in a wide range of subject areas such as: water disinfection, electrochemical production of gases, electrodeposition, electroplating, the deposition of polymer films, the production of active metal nano/micro-particles, electrosynthesis, corrosion, electrochemical dissolution and electroanalysis.

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There are many topics in the field of Sonoelectrochemistry, to name but a few:

  1. Use of electrochemistry as a tool to investigate Cavitation Bubble Dynamics
  2. Sonoelectroanalysis
  3. Sonoelectrochemistry in environmental applications
  4. Organic Sonoelectrosynthesis
  5. Sonoelectrodeposition
  6. Influence of ultrasound on corrosion kinetics and its application to corrosion tests
  7. Sonoelectropolymerisation  
  8. Sonoelectrochemical production of nanomaterials
  9. Sonochemistry and Sonoelectrochemistry in hydrogen and fuel cell technologies

  • Sono-Voltammograms

  • Nanomaterials Production

  • Hot-Spot Theory

  • Surface Modification


What is Power Ultrasound?

Power Ultrasound  is defined as a sound wave with a frequency above 16 kHz i.e. the upper limit of human hearing. The upper limit is usually taken to be 5 MHz for gases and 500 MHz for liquids and solids. The propagation of an ultrasonic wave when transmitted through a gas, liquid and solid depends on the nature of the medium. The ultrasonic velocity is found to be greater in solids and liquids than in gases and is related to the viscosity and density of the medium. The motion of the wave is communicated to the molecules of the medium which also transmits this motion to the nearest molecule before returning to their equilibrium position. Over the last few years the use of power ultrasound has found wide application in the chemical and processing industries where it is used to enhance both synthetic and catalytic processes and to generate new products. This area of research has been termed sonochemistry.
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Book dedicated to Sonoelectrochemistry

This book is fully dedicated on the use of Power Ultrasound in all aspects of Electrochemistry. It also highlights the use of sonoelectrochemistry in water and soil treatment, hydrogen production, nanomaterials production etc

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