Green Processing and Synthesis,
Journal Year:
2025,
Volume and Issue:
14(1)
Published: Jan. 1, 2025
Abstract
This
study
investigates
the
environmentally
friendly
synthesis
of
Fe₃O₄
nanoparticles
using
basil
leaf
extract
as
a
sustainable
precursor.
The
resulting
basil–Fe₃O₄
were
extensively
characterized
through
Fourier-Transform
infrared,
UV–Vis,
scanning
electron
microscopy,
energy-dispersive
spectroscopy,
X-ray
diffraction,
and
VSM
to
verify
their
structural,
morphological,
magnetic
properties.
Optical
analysis
showed
prominent
absorption
peak
at
263
nm
band
gap
energy
3.87
eV,
suggesting
its
potential
for
photocatalytic
applications.
catalytic
performance
basil–Fe
3
O
4
was
tested
in
2-benzylidene
malononitrile
derivatives
under
microwave
irradiation,
achieving
up
98%
purity
crystalline
form
across
12
examples
involving
aromatic
heteroaromatic
aldehydes
with
malononitrile.
catalyst
exhibited
excellent
reusability
minimal
loss
activity
over
several
cycles,
highlighting
greener
more
chemical
processes.
Additionally,
evaluated
degradation
Congo
red
dye,
an
impressive
97%
efficiency
UV
irradiation.
Kinetic
indicated
high
regression
coefficient
significant
reaction
rate
constant,
confirming
superior
activity.
limit
detection
quantification
determined
be
32.8
99.16
mg·L
−1
,
respectively,
affirming
method’s
sensitivity
reliability
detecting
dye.
Remarkably,
even
small
amount
(5%)
enabled
efficient
low
exposure,
showcasing
large-scale
wastewater
treatment.
dual
functionality
both
organic
environmental
remediation
highlights
promise
advancements
green
chemistry
treatment
Polymers for Advanced Technologies,
Journal Year:
2025,
Volume and Issue:
36(4)
Published: April 1, 2025
ABSTRACT
The
rapid
advancement
of
digital
technologies
has
heightened
the
demand
for
multifunctional
smart
materials
with
adaptive
and
responsive
capabilities.
Among
these,
chromogenic
hydrogel
composites
have
emerged
as
promising
candidates
next‐generation
applications
due
to
their
unique
stimuli‐responsive
behavior.
These
hydrogels
exhibit
dynamic
optical
changes
in
response
external
triggers
such
light,
temperature,
pH,
humidity,
mechanical
stress,
electric
or
magnetic
fields,
enabling
a
wide
range
functionalities
data
storage,
security,
authentication,
anti‐counterfeiting
technologies.
This
review
provides
comprehensive
examination
composites,
focusing
on
fundamental
design
principles,
mechanisms,
emerging
systems.
categorizes
these
based
response,
including
photochromic,
hydrochromic,
electrochromic,
magnetochromic,
thermochromic,
tribochromic,
mechanochromic
systems,
analyzing
key
material
compositions
functional
characteristics.
Furthermore,
recent
advances
fabrication
techniques
3D
4D
printing,
self‐healing
networks,
multi‐stimuli‐responsive
are
discussed,
highlighting
potential
programmable
displays,
rewritable
encrypted
security
Finally,
identifies
current
challenges
future
directions
field,
emphasizing
need
enhanced
durability,
faster
times,
improved
integration
insights
presented
this
work
aim
guide
development
innovative
interactive
intelligent
materials.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: April 3, 2025
Enhancing
the
stability
of
polymer
gels
under
harsh
conditions
is
vital
for
improving
enhanced
oil
recovery
(EOR)
applications.
This
study
introduces
a
novel
gel
synthesized
using
MgO-HPAM
nanocomposite
and
zirconium
sulfate
crosslinker
(CL).
The
demonstrates
exceptional
durability,
capable
maintaining
its
properties
high
temperature
salinity,
addressing
long-standing
challenges
in
EOR.
research
involved
several
key
experiments.
Initial
tests
revealed
that
MgO
does
not
influence
gelation
time;
this
controlled
by
CL
concentrations.
significantly
improved
storage
modulus,
with
increases
72.47%
84.52%
at
250
500
ppm
MgO,
respectively.
Syneresis
studies
showed
after
50
days,
retained
88%
their
weight,
unlike
nanocomposite-free
which
lost
75%.
In
core
flooding
experiments,
demonstrated
higher
injection
pressure
reduced
permeability
compared
to
nano-free
gels.
SEM
imaging
confirmed
nanoparticle
agglomeration
sand
face,
enhancing
gel's
barrier
properties.
Over
days
90
°C
2000
psi,
reductions
were
observed
58%,
98.1%,
97.9%
across
samples.
These
findings
underscore
potential
advancing
EOR
techniques.
Green Processing and Synthesis,
Journal Year:
2025,
Volume and Issue:
14(1)
Published: Jan. 1, 2025
Abstract
This
study
investigates
the
environmentally
friendly
synthesis
of
Fe₃O₄
nanoparticles
using
basil
leaf
extract
as
a
sustainable
precursor.
The
resulting
basil–Fe₃O₄
were
extensively
characterized
through
Fourier-Transform
infrared,
UV–Vis,
scanning
electron
microscopy,
energy-dispersive
spectroscopy,
X-ray
diffraction,
and
VSM
to
verify
their
structural,
morphological,
magnetic
properties.
Optical
analysis
showed
prominent
absorption
peak
at
263
nm
band
gap
energy
3.87
eV,
suggesting
its
potential
for
photocatalytic
applications.
catalytic
performance
basil–Fe
3
O
4
was
tested
in
2-benzylidene
malononitrile
derivatives
under
microwave
irradiation,
achieving
up
98%
purity
crystalline
form
across
12
examples
involving
aromatic
heteroaromatic
aldehydes
with
malononitrile.
catalyst
exhibited
excellent
reusability
minimal
loss
activity
over
several
cycles,
highlighting
greener
more
chemical
processes.
Additionally,
evaluated
degradation
Congo
red
dye,
an
impressive
97%
efficiency
UV
irradiation.
Kinetic
indicated
high
regression
coefficient
significant
reaction
rate
constant,
confirming
superior
activity.
limit
detection
quantification
determined
be
32.8
99.16
mg·L
−1
,
respectively,
affirming
method’s
sensitivity
reliability
detecting
dye.
Remarkably,
even
small
amount
(5%)
enabled
efficient
low
exposure,
showcasing
large-scale
wastewater
treatment.
dual
functionality
both
organic
environmental
remediation
highlights
promise
advancements
green
chemistry
treatment
