Science & Technology Indonesia,
Год журнала:
2023,
Номер
8(4), С. 666 - 674
Опубликована: Окт. 1, 2023
Sengon
wood
sawdust
(SWS)
is
a
solid
waste
of
the
industry
with
potential
as
source
cellulose
and
can
increase
its
economic
value.
However,
in
plants
tightly
bound
to
lignin
which
called
lignocellulose
therefore
needs
be
delignified
before
utilization.
In
this
study,
we
determined
optimum
conditions
for
delignification
from
sengon
(SWSC).
Optimization
variables
were
parameter
obtained
hemicellulose,
cellulose,
content.
The
optimization
SWSC
was
then
carried
out
using
factorial
design
by
analyzing
effect
sodium
hydroxide
(NaOH)
concentration
(2%
-
10%)
ratio
(SWS
:
NaOH
solution)
(1:10
–
1:80)
on
Optimal
at
2%
(1:19.20)
concentrations
8.01%
52.49%
22.2%
lignin.
One
sample
T-test
analysis
predictive
research
values
showed
insignificant
results
(P>0.05)
means
that
equation
proved
valid
determine
sawdust.
FT-IR
analysis,
SEM
imaging,
particle
size
distribution
(PSA
profile)
produced
under
these
has
similar
characteristics
standard
Avicel®
PH
102.
Nano Materials Science,
Год журнала:
2023,
Номер
6(1), С. 96 - 105
Опубликована: Ноя. 11, 2023
This
work
presents
the
development
of
hierarchical
niobium
pentoxide
(Nb2O5)-based
composite
nanofiber
membranes
for
integrated
adsorption
and
photocatalytic
degradation
methylene
blue
(MB)
pollutants
from
aqueous
solutions.
The
Nb2O5
nanorods
were
vertically
grown
using
a
hydrothermal
process
on
base
electrospun
nanofibrous
membrane
made
polyacrylonitrile/polyvinylidene
fluoride/ammonium
niobate
(V)
oxalate
hydrate
(Nb2O5@PAN/PVDF/ANO).
They
characterized
field-emission
scanning
electron
microscopy
(FE-SEM),
X-ray
diffraction
(XRD)
analysis,
Fourier
transform
infrared
(FTIR)
spectroscopy.
These
nanofibers
possessed
narrow
optical
bandgap
energy
3.31
eV
demonstrated
an
MB
efficiency
96
%
after
480
min
contact
time.
pseudo-first-order
kinetic
study
was
also
conducted,
in
which
Nb2O5@PAN/PVDF/ANO
have
constant
values
1.29
×
10−2
min−1
0.30
solutions,
respectively.
are
17.7
7.8
times
greater
than
those
PAN/PVDF/ANO
without
nanostructures.
Besides
their
outstanding
performance,
developed
materials
exhibit
advantageous
characteristics
recycling,
subsequently
widen
practical
use
environmental
remediation
applications.
International Journal of Thermofluids,
Год журнала:
2024,
Номер
21, С. 100588 - 100588
Опубликована: Янв. 26, 2024
Bio-based
activated
carbon
is
a
promising
porous
material
for
the
use
in
electrodes
supercapacitors
due
to
its
low-cost
production,
high
surface
area
with
controllable
pore
structure
and
better
thermal
properties.
Apart
from
activation
type
conditions,
content
of
lignocellulosic
biomass
(namely
cellulose,
hemicellulose
lignin)
also
critical
parameter
on
textural
properties
carbon.
In
present
study,
glycerol
organosolv
treatment
was
applied
fractionate
lignin
cellulose
hazelnut
shells.
Hazelnut
shell,
cellulose-rich
pulp
mixed
separately
KOH
at
ratio
1:2,
each
mixture
1
hours
800°C.
FTIR
results
showed
that
lignin-based
(AL)
cellulose-based
carbons
(AC)
had
more
oxygen-containing
functional
groups,
while
AL
aromatic
structure.
While
shell
(ANS)
highest
specific
(1052.2
m2/g)
micropore
volume
(0.427cm3/g),
AC
least
(319.07
(0.107cm3/g).
ANS
microporous
structure,
classified
as
mesoporous
Due
amount
oxygen-rich
diameter
higher
1nm,
good
candidate
be
used
an
electrode
material.
But,
since
are
not
only
factors
affect
capacitance,
future
work
will
include
electrochemical
performance
test
ANS,
AC.
Energies,
Год журнала:
2024,
Номер
17(18), С. 4617 - 4617
Опубликована: Сен. 14, 2024
This
review
analyzes
in
detail
the
topic
of
supercapacitors
based
on
biochar
technologies,
including
their
advantages,
disadvantages,
and
development
potential.
The
main
is
formation
precursors
process
pyrolysis
activation,
possibility
application
itself
various
fields
brought
closer.
structure,
division,
principle
operation
supercondensates
are
discussed,
where
good
bad
sides
pointed
out.
current
state
scientific
legal
knowledge
biocarbon
its
applications
verified,
results
many
authors
compared
to
examine
level
research
electrodes
created
from
lignocellulosic
biomass.
Current
sites
for
transportation,
electronics,
power
generation
(conventional
unconventional)
also
examined,
as
potential
further
technology
under
discussion.
Clean Energy,
Год журнала:
2025,
Номер
9(2), С. 99 - 110
Опубликована: Янв. 9, 2025
Abstract
In
this
study,
activated
carbon
was
synthesized
from
palm
oil
empty
fruit
bunches
through
two
different
carbonization
and
activation
processes
used
as
carbon-based
electrodes
for
supercapacitor.
The
produced
by
a
combination
of
the
hydrothermal
pyrolysis
methods
using
melamine
nitrogen
source
dopant
potassium
chloride
an
activating
agent.
effect
temperature
on
crystalline
structure,
crystallite
size,
functional
groups,
surface
characteristics
resulting
carbon,
which
applied
in
electric
double-layer
capacitor.
performance
evaluated,
suggesting
that
prepared
at
950°C
showed
highest
specific
capacitance
389.122
F/g
current
density
1
A/g
with
energy
power
densities
13.511
125
W/kg,
respectively.
Overall
results
suggest
are
promising
cellulosic
sources
synthesizing
supercapacitors.
