Sonochemical Preparation of Ultrafine Palladium Particles
Source abstract
Abstract
Stable palladium particles were found to be readily prepared from aqueous solutions of palladium(II) chloride by ultrasonic irradiation (200 kHz, 6.0 W/cm2) in the presence of protective agents (RH). The average sizes of particles were 6 and 7.5 nm from solutions of 0.1 and 0.5 mM of Pd(II)-containing poly(vinylpyrrolidone), respectively. It is suggested that the main sonolytic reduction of Pd(II) takes place as shown in eqs 1−3: protective agents are subjected to pyrolysis at the interfacial region between cavitation bubbles and bulk solution, producing eventually reducing radicals, which may react with Pd(II) to form Pd(0).
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Research context
OpenAlex topics: Ultrasound and Cavitation Phenomena · Innovative Microfluidic and Catalytic Techniques Innovation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Applied Materials Science College of Engineering University of Osaka Prefecture Gakuen-cho 1-1, Sakai, Osaka 593 Japan
Research Institute for Advanced Science and Technology University of Osaka Prefecture Gakuen-cho 1-2, Sakai, Osaka 593 Japan
References (23)
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