Journal
ULTRASONICS SONOCHEMISTRY
Volume 15, Issue 3, Pages 157-163Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2007.02.007
Keywords
sonoelectrochemistry; cuprous oxide; nanopowders; semiconducting materials
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Cu2O nanopowders have been prepared by ultrasound-assisted electrochemistry with a potentiostatic set-up. Their composition has been determined by X-ray diffraction and energy dispersive X-ray spectroscopy. Transmission electron microscopy and centrifugation analyses indicate that the nanopowders consist of agglomerates of variable nanometric diameter grain. Most of particles have a diameter of 8 nm whatever the electrodeposition potential. The influence of the parameters of electrochemical and ultrasonic pulses on the particle diameter was also studied. The specific surface areas determined by Brunauer-Emmet-Teller (BET) model are very high with a value close to 2000 m(2) g(-1). (c) 2007 Elsevier B.V. All rights reserved.
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