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song et al. reported some other kind of formaldehyde

song et al. reported some other kind of formaldehyde K3dX3
song et al. reported some other kind of formaldehyde colorimetric gas sensor. They produced gas sensors using cellulose nanocrystals (CNCs) with the help of ionic liquid (1-butyl-3-methyl midazlium) without using any extra chemical pigments. CNCs due to their physical and chemical properties including forming color structures due to their liquid crystalline arrangements are considered appealing materials. song et al. showed the ion-liquid assist technique of CNCs, which is faster and greater controllable than the previous approach. They immersed the silicon substrate vertically in the BmimCl / CNC solution prepared via mixing 1 ml of the CNC solution and 0. 8 mg of BmimCl, after which pulled the substrate out of the solution at a rate of 3-9 μm / min to deposit the CNCs within the glovebox to reduce noises and impurities. At each extraction speed, distinctive colored CNC films had been made due to different thicknesses. figure 20a shows different CNC films with various colors due to the extraction speed. The hydroxyl groups of the films were converted to amine groups through surface modification. Their amino groups react selectively with formaldehyde gas, and the formula reaction among them is: ( R–COH + R′–NH2 → R–C=N–R′ + H2O). figure 20b indicates the colour change of three sensors to diverse aldehyde gas, the most left column of every control figure shows the 0 ppm aldehyde gas. figure 20c shows the selectivity of three CNC film gas sensors with different colors compared to different VOCs [256].
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song
et al. reported
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some
other kind of formaldehyde colorimetric
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gas
sensor. They produced
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gas
sensors using cellulose
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nanocrystals
(
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CNCs
) with the
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help
of ionic liquid (1-butyl-3-methyl
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midazlium
) without using any extra chemical pigments.
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CNCs
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due
to their physical and chemical properties including forming color structures
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due
to their liquid crystalline arrangements
are considered
appealing materials.
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song
et al.
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showed
the ion-liquid assist technique of
Possible spelling mistake found.
CNCs
, which is faster and greater controllable than the previous approach. They immersed the silicon substrate
vertically
in the
Possible spelling mistake found.
BmimCl
/ CNC solution prepared via mixing 1 ml of the CNC solution and 0. 8 mg of
Possible spelling mistake found.
BmimCl
, after which pulled the substrate out of the solution at a rate of 3-9
Possible spelling mistake found.
μm
/ min to deposit the
Possible spelling mistake found.
CNCs
within the
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glovebox
to
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reduce
noises and impurities. At each extraction speed, distinctive colored CNC films had
been made
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due
to
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different
thicknesses.
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figure
20a
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shows
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different
CNC films with various colors
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due
to the extraction speed. The hydroxyl groups of the films
were converted
to amine groups through surface modification. Their amino groups react
selectively
with formaldehyde
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gas
, and the formula reaction among them is:

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(
R–
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COH
+ R′–NH2 → R–C=N–R′ + H2O).
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figure
20b indicates the
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colour
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change
of three sensors to diverse aldehyde
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gas
, the most
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left
column of every control
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figure
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shows
the 0 ppm aldehyde
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gas
.
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figure
20c
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shows
the selectivity of three CNC film
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gas
sensors with
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different
colors compared to
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different
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VOCs
[256].
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IELTS academic song et al. reported some other kind of formaldehyde

Academic
  American English
2 paragraphs
244 words
5.5
Overall Band Score
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