Nanocellulose-graphene hybrid composites: Fabrication, characterization, applications and environmental impact
J. Yusuf,
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Abdul Halim Muhammad Firdaus,
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S.M. Sapuan
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et al.
International Journal of Biological Macromolecules,
Journal Year:
2024,
Volume and Issue:
282, P. 137244 - 137244
Published: Nov. 4, 2024
Language: Английский
Novel In-Situ Synthesis Techniques for Cellulose-Graphene Hybrids: Enhancing Electrical Conductivity for Energy Storage Applications
Recent Progress in Materials,
Journal Year:
2025,
Volume and Issue:
07(01), P. 1 - 50
Published: Jan. 21, 2025
This
study
investigates
the
hypothesis
that
diverse
synthesis
techniques
can
yield
cellulose-graphene
hybrids
with
tailored
properties
for
specific
applications,
enabling
advancements
in
flexible
electronics,
energy
storage,
environmental
remediation,
and
biomedical
devices.
We
examined
compared
multiple
methods,
including
chemical
reduction,
in-situ
synthesis,
green
using
natural
reducing
agents,
solvent-assisted
approaches,
hydrothermal
solvothermal
techniques,
mechanical
treatments,
electrochemical
exfoliation.
Each
method
was
assessed
its
impact
on
material
properties,
scalability,
footprint.
Chemical
reduction
resulted
uniform
graphene
dispersion
superior
electrical
conductivity,
I(D)/I(G)
ratio
Raman
spectra
indicating
successful
of
oxide
(GO)
to
reduced
(rGO).
Green
particularly
cow
urine
as
a
agent,
provided
an
eco-friendly
alternative,
leveraging
constituents
reduce
GO
rGO
while
minimizing
impact.
Mechanical
treatments
effectively
prepared
cellulose
microfibers
compatibility
graphene,
enhancing
interfacial
interactions
stress
transfer
resulting
composites.
Solvent-assisted
allowed
precise
tuning
composite
through
selection
appropriate
solvents
processing
conditions.
Hydrothermal
methods
produced
high
purity
uniformity
under
high-temperature
high-pressure
conditions,
facilitating
promoting
strong
bonding
between
graphene.
Electrochemical
exfoliation
generated
high-quality
controlled
characteristics,
allowing
it
produce
fewer
defects
other
methods.
Findings
reveal
synthesized
these
exhibit
significant
improvements
thermal
stability,
strength.
For
instance,
even
low
additions
(3
wt%)
surpassed
percolation
threshold,
conductivity
1.9
×
10<sup>-5</sup>
S
cm<sup>-1</sup>
cellulose/rGO
(8
aerogels.
These
enhanced
underscore
importance
carefully
selecting
optimize
characteristics
target
applications.
The
research
provides
comprehensive
understanding
synthesis-method-property
relationships,
offering
valuable
insights
development
advanced
hybrid
materials
highlighting
their
transformative
potential
across
various
high-impact
fields,
storage
devices,
remediation
systems,
Language: Английский
Cellulose Nanofiber Aerogel from Banana Peduncle Modified with Graphene Oxide as Bio-Adsorbent for Lead and Chromium Ions
Anjar Priyatmojo,
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Riza Wirawan,
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Husaini Ardy
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et al.
Gels,
Journal Year:
2025,
Volume and Issue:
11(2), P. 95 - 95
Published: Jan. 28, 2025
Textile
industry
waste
contains
high
concentrations
of
heavy
metals
such
as
Pb(II)
and
Cr(VI)
that
must
be
reduced
before
they
are
released
to
the
environment.
The
adsorption
method
is
one
way
reduce
metal
content.
In
this
work,
we
develop
a
porous
cellulose
nanofiber
(CNF)
aerogel
modified
with
graphene
oxide
(GO)
an
alternative
adsorbent
for
Cr(VI).
Cellulose
was
extracted
from
banana
peduncle,
biomass
remains
largely
underutilized.
addition
GO
aims
increase
properties.
adsorbents
were
synthesized
by
varying
ultrasonication
time
45
min
CNF
60
60,
amount
added
1
mL
2
mL.
successfully
prepared
using
freeze-drying
CNF45,
CNF60,
CNF45/GO1,
CNF45/GO2,
CNF60/GO1,
CNF60/GO2
variations.
isolated
peduncle
average
diameter
44.16
nm
(CNF
45)
14.6
60)
ultrasonication.
Chemical
treatment
crystallinity
index
value
73%
61%
respectively.
has
very
low
shrinkage
rate
(<7%),
resulting
in
larger
surface
area.
obtained
optimum
ability
at
concentration
100
ppm
27.27
mg/g
30
min.
On
other
hand,
13.48
SEM
images
show
all
porous,
porosity
range
96-98%.
conclusion,
proved
most
effective
adsorbent,
offering
potential
removal
industrial
wastewater.
Language: Английский
Sustainable treatment of oil produced water using novel methods – A review
Fathi Al Jabri,
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L. Muruganandam,
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Natarajan Rajamohan
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et al.
Journal of Hazardous Materials Advances,
Journal Year:
2025,
Volume and Issue:
18, P. 100658 - 100658
Published: March 4, 2025
Language: Английский
Isotherm, Thermodynamic, and Kinetic Studies of Dye Adsorption on Graphene Oxides with Varying Oxidation Degrees
Results in Engineering,
Journal Year:
2025,
Volume and Issue:
unknown, P. 104558 - 104558
Published: March 1, 2025
Language: Английский
Optimizing Graphene Oxide Content in Cellulose Matrices: A Comprehensive Review on Enhancing the Structural and Functional Performance of Composites
Encyclopedia,
Journal Year:
2024,
Volume and Issue:
4(4), P. 1827 - 1856
Published: Nov. 29, 2024
The
incorporation
of
graphene
into
cellulose
matrices
has
emerged
as
a
promising
strategy
for
enhancing
the
structural
and
functional
properties
composite
materials.
This
comprehensive
review
provides
critical
analysis
recent
advances
in
optimizing
content
its
impact
on
performance.
Various
optimization
techniques,
including
response
surface
methodology,
particle
swarm
optimization,
artificial
neural
networks,
have
been
employed
to
identify
optimal
concentrations
processing
conditions.
Quantitative
analyses
demonstrate
significant
improvements
mechanical
properties,
with
notable
increases
tensile
strength
Young’s
modulus
reported
graphene/microfibrillated
composites.
Substantial
enhancements
thermal
stability
observed
lysozyme-modified
nanoplatelet–cellulose
Electrical
conductivity
achieved
at
low
loading
levels.
Additionally,
barrier
biocompatibility,
functionality
applications
such
energy
storage
environmental
remediation
substantially
improved.
explores
case
studies
encompassing
conductivity,
viscosity,
durability
behaviors,
pollutant
removal,
various
other
properties.
Despite
results,
challenges
remain,
uniform
dispersion,
scalability,
cost-effectiveness,
long-term
stability.
Strategies
functionalization,
solvent
selection,
protective
coatings
are
discussed.
Future
research
directions,
novel
techniques
like
3D
printing
electrospinning,
well
additional
materials,
outlined.
synthesizes
current
knowledge,
identifies
emerging
trends,
roadmap
future
rapidly
evolving
field
graphene–cellulose
Language: Английский