Sharma et al. [30] have characterized Se nanoballs fab-
ricated from V. vinifera by FTIR spectral studies. The
spectrum exhibited two sharp absorption peaks at
3420 cm−1
attributed to OH and, the second peak at
1620 cm−1
to C-H vibration of the organic molecules. A
distinct peak at 1375 cm−1
has been assigned to phenolic
OH. The other peaks of medium intensity are due to –
CH3 and OCH3 groups associated with the biopolymers,
present in the V. vinifera extract acting as reducing
agent and stabilizer for the Se nanoballs. Since lignin is a
component of all vegetables, fruits and cell wall, it can
be extracted from them and the compounds present in
them may be identified. In the present work, phenolic
group has been identified which generally acts as redu-
cing agent and, it is oxidised to ketone during the redox
process. However, the extract also contains fairly sub-
stantial amount of reducing sugars and therefore, they
also help in the reduction and formation of Se nanoballs.
These authors have given a flow diagram for Se nanopar-
ticles synthesis but it does not reveal the chemical
changes which occur as a consequence of redox reac-
tions. We now propose the following scheme Figure 1
based on the general synthetic route.
Sharma et al. [30] have characterized Se nanoballs fab-ricated from V. vinifera by FTIR spectral studies. Thespectrum exhibited two sharp absorption peaks at3420 cm−1attributed to OH and, the second peak at1620 cm−1to C-H vibration of the organic molecules. Adistinct peak at 1375 cm−1has been assigned to phenolicOH. The other peaks of medium intensity are due to –CH3 and OCH3 groups associated with the biopolymers,present in the V. vinifera extract acting as reducingagent and stabilizer for the Se nanoballs. Since lignin is acomponent of all vegetables, fruits and cell wall, it canbe extracted from them and the compounds present inthem may be identified. In the present work, phenolicgroup has been identified which generally acts as redu-cing agent and, it is oxidised to ketone during the redoxprocess. However, the extract also contains fairly sub-stantial amount of reducing sugars and therefore, theyalso help in the reduction and formation of Se nanoballs.These authors have given a flow diagram for Se nanopar-ticles synthesis but it does not reveal the chemicalchanges which occur as a consequence of redox reac-tions. We now propose the following scheme Figure 1based on the general synthetic route.
การแปล กรุณารอสักครู่..
