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Fig. 11.3
XRD pattern of
silver nanocrystals. (Adopted
with kind permission from
Arshi et al.
2011b
)
Fig. 11.4
UV-Vis spec-
trum of silver nanocrystals.
(Adopted with kind permis-
sion from Arshi et al.
2011b
)
3.3 ZnO Nanostructures
ZnO nanoflowers consisting of nanorods have been prepared using efficient, cost-
effective and energy-saving microwave-assisted solution method. The as-synthe-
sized nanorods were characterized by using XRD, FESEM and HRTEM measure-
ments. These ZnO nanorods exhibit room temperature ferromagnetism which may
be due to the presence of defects (oxygen vacancies) in the rods. A schematic rep-
resentation of the possible growth mechanism of ZnO nanoflowers is shown in
Fig.
11.7
.
