taining a zwitterionic surfactant [31]. In Figure 6.2 the TEM image of the elongated copper nanoparticles surrounded by surfactant molecules is presented. The
dimensions of these copper nanoparticles were approximately 500 nm in length
and 50 nm in width. In the absence of a surfactant, nanoparticles were spherical in
Fig. 6.1. TEM micrographs of the cobalt colloidal solution: (a)
as prepared fresh, (b) after a week of aging, (c) after a month
of aging (inset: ED pattern).
Fig. 6.2. Transmission electron micrograph of the elongated
copper nanoparticles coated with CTAPTS.
6.1 Sonochemistry 119