References of "Ultrasonics Sonochemistry"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailPreparation of stable suspensions of gold nanoparticles in water by sonoelectrochemistry
Aqil, Abdelhafid ULg; Serwas, Harry; Delplancke, J. L. et al

in Ultrasonics Sonochemistry (2008), 15(6), 1055-1061

Stable suspensions of gold nanoparticles in water were prepared with high yield by a novel one-step ultrasound assisted electrochemical process. Various strategies based on the addition of either tailor ... [more ▼]

Stable suspensions of gold nanoparticles in water were prepared with high yield by a novel one-step ultrasound assisted electrochemical process. Various strategies based on the addition of either tailor-made polymers or mixtures of commercially available polymers, in the electrochemical bath have been found successful to avoid nanoparticles aggregation commonly observed by sonoelectrochemistry. α-Methoxy-ω-mercapto-poly(ethylene oxide) or poly(vinyl pyrrolidone)/polyethylene oxide mixtures were able to build up a coalescence barrier around the gold nanoparticles. The results showed that the size of the gold nanoparticles could be easily tuned between 5 nm and 35 nm by simple control of the electrochemical parameters, i.e. the deposition time (TON) from 10 ms to 20 ms. The properties of as-prepared gold nanoparticles were compared to the ones of gold colloids prepared by the more conventional wet nanoprecipitation method using chemical reductive agents. [less ▲]

Detailed reference viewed: 77 (11 ULg)