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SYNTHESIS AND STABILIZATION OF COPPER NANOPARTICLES IN CHITOSAN CONDITIONS

SYNTHESIS AND STABILIZATION OF COPPER NANOPARTICLES IN CHITOSAN CONDITIONS Qn361
Due to the fact that nanomaterials have unique and more useful physical, chemical and biological properties than their macro compounds, metal nanoparticles have a wide range of applications in recent years. Thus, scientists are interested it because the synthesis of metal nanoparticles stabilized in the natural polymer environment and their application in medicine, catalysis and many other fields. Chitosan, which belongs to the group of natural polymers and distinguished by its superior properties, has been studied in deeply. These advantages include unique properties such as non-toxicity, biocompatibility, antibacterial and antifugal activity [1, 2]. Consider all these, in the study biocomposites with metal nanoparticles were obtained using chitosan. Copper metal nanoparticles are immobilized in a natural polymer chitosan. For this purpose, firstly, chitosan, a natural polymer, was quaternized with benzyl chloride in an acidic environment [3]. Immobilization of copper metal nanoparticles to the obtained compound was carried out as follows. At this time, the quaternized chitosan is mixed in 0. 3 ml of acetic acid until it is completely dissolved. When the solution was homogeneous, 0. 58 g of CuSO4 * 5H2O (30% of the polymer) was added to the solution and left overnight after mixing. In 30% of the metal, 0. 62 g of reducing agent NaBH4 is added to the blue solution, and reduce Cu2+ ions to Cu0. In this case, the color changes from blue to black. After the reduction process is completed, the cross-linking agent N, N’-methylene bis-acrylamide is added to the solution. The resulting product is dried, washed several times with distilled water, removed of additives and then it was cross-link by UV rays at 90 °C for 3-4 hours. The obtained product was studied by IR spectroscopy. The result obtained were studied by IR spectroscopy method and determined that the instead of the 1458 cm -1 absorbtion band in the pure chitosan (Fig. 1) a 1559 cm-1 absorbtion band is formed in the spectrum of the quaternized (30 %) chitosan (Fig. 2)
Due to the fact that nanomaterials have unique and more useful physical, chemical and biological properties than their macro compounds,
metal
nanoparticles have a wide range of applications in recent years.
Thus
, scientists
are interested
it
because
the synthesis of
metal
nanoparticles stabilized in the
natural
polymer environment and their application in medicine, catalysis and
many
other fields. Chitosan, which belongs to the group of
natural
polymers and distinguished by its superior properties, has
been studied
in
deeply
. These advantages include unique properties such as non-toxicity, biocompatibility, antibacterial and
antifugal
activity [1, 2]. Consider all these, in the study
biocomposites
with
metal
nanoparticles were
obtained
using chitosan. Copper
metal
nanoparticles
are immobilized
in a
natural
polymer chitosan. For this purpose,
firstly
, chitosan, a
natural
polymer, was
quaternized
with benzyl chloride in an acidic environment [3]. Immobilization of copper
metal
nanoparticles to the
obtained
compound
was carried
out as follows. At this time, the
quaternized
chitosan
is mixed
in 0. 3 ml of acetic acid until it is completely dissolved. When the
solution
was homogeneous, 0. 58 g of CuSO4 * 5H2O (30% of the polymer) was
added
to the
solution
and
left
overnight after mixing. In 30% of the
metal
, 0. 62 g of reducing agent NaBH4 is
added
to the blue
solution
, and
reduce
Cu2+ ions to Cu0.
In this case
, the color
changes
from blue to black. After the reduction process
is completed
, the cross-linking agent N, N’
-methylene
bis-acrylamide is
added
to the
solution
. The resulting product
is dried
, washed several times with distilled water, removed of additives and then it was
cross-link
by UV rays at 90 °C for 3-4 hours. The
obtained
product
was studied
by IR spectroscopy.
The
result
obtained
were studied
by IR spectroscopy method and determined that the
instead
of the 1458 cm -1
absorbtion
band in the pure chitosan (Fig. 1) a 1559 cm-1
absorbtion
band
is formed
in the spectrum of the
quaternized
(30 %) chitosan (Fig. 2)
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