Figure 3.

TEM images with lower (a) and higher magnification (b) and EDS spectrum [inset of (a)] of SiO2-coated SWCNTs bearing thiol groups (SWCNT@SiO2–SH); TEM images with lower (c), higher magnification (d) as well as EDS spectrum (e) of Ag nanoparticles immobilized SWCNT@SiO2–SH. Thescale barsare 50 nm

Li et al. Nanoscale Research Letters 2009 4:1384-1388   doi:10.1007/s11671-009-9409-4