Sonoelectrochemical (20 kHz) production of Co65Fe35 alloy nanoparticles from Aotani solutions
This paper describes the production of alloy nanoparticles of Co:Fe ratio 65:35 from Aotani solutions in the presence of high power ultrasound (20 kHz). The production of this new type of alloy nanoparticles was performed potentiostatically and galvanostatically at (298 ± 1) K using a newly designed experimental set-up i.e. a ‘sonoelectrode’ producing short applied current pulses triggered and followed immediately by ultrasonic pulses. It was shown that cathode efficiencies decreased with increasing current densities and high nanoparticle yields were obtained at low current densities. Morphological and structural studies of the produced nanoparticles were performed by TEM, SEM, XRD, and SAED, and showed that the strongly aggregated Co65Fe35 alloy nanoparticles were predominantly formed, with prevalent body-centered cubic bcc crystalline structure; no redissolution of the nanoaggregates was observed and no separate Fe and Co metallic nanoparticles were produced sonoelectrochemically. The experimental value of the lattice parameter for bcc Co–Fe alloy was 2.85 Å and was in excellent agreement with literature values.
KeywordsSonochemistry Electrochemistry Nanoparticles Power ultrasound
The authors thank the European Community Sixth Framework Program through a STREP grant to the SELECTNANO Consortium, Contract No. 516922.03/25/2005.
- 2.Pollet BG, Phull SS (2001) In: Recent research developments in electrochemistry, chapt 4. Transworld Research Network Publisher, India, p 55Google Scholar
- 19.Lee ST, Wang N, Lee CS (2000) Mater Sci Eng A286(1):16Google Scholar
- 24.Delplancke JL, Bouesnard O, Reisse J, Winand R (1997) Mater Soc Symp Proc 451:383Google Scholar
- 26.Delplancke JL (2003) In: Baraton M-I (ed) Synthesis, functionalization and surface treatment of nanoparticles. American Scientific Publisher, CaliforniaGoogle Scholar
- 28.Jones DA (1992) Principles and prevention of corrosion. Macmillan Publishing Company, New YorkGoogle Scholar
- 29.Brenner A (1963) Electrodeposition of alloys: principles and practices. Academic Press, New YorkGoogle Scholar
- 30.Aotani K (1952) J Electrochem Soc Jpn 20:31Google Scholar
- 32.Margulis MA, Malt’sev AN (1969) Russ J Phys Chem (Transl Khim Zh Fiz) 43:1055Google Scholar
- 34.Correira AN, De Oliveira RCB, De Lima-Neto P (2006) J Braz Chem Soc 17(1):90Google Scholar
- 37.Young RA (1993) The rietveld method. Oxford University Press, OxfordGoogle Scholar
- 38.Smithells CJ (1962) Metal reference book, vol 1. Butterworths, LondonGoogle Scholar