In addition to the nanoparticles synthesized and characterized
by the procedures described above, commercial GNPs (BBInternational)
were also analyzed for comparison. Size and number
density of these nanoparticles were obtained from the manufacturer’s
datasheet. To facilitate a distinction between the two types
of particles, results obtained from the commercial nanoparticles
are symbolized with down triangles, whereas the results obtained
from in-house synthesized nanoparticles are symbolized with up
triangles in all figures.