ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(40)
Published: Oct. 1, 2024
Abstract
In
this
study,
hydroxyapatite‐gelatin
(HAp‐Gel)
composite
using
Ca
precursor
from
cuttlefish
bone
(
Sepia
Sp.)
has
great
potential
to
be
used
in
hydroxyapatite
synthesis.
The
HAp‐Gel
was
synthesized
in‐situ
by
sol‐gel
method
with
varying
concentrations
see
its
ability
adsorb
rhodamine
b
dye.
XRF
analysis
results
obtained
a
CaO
content
of
95.561
%.
40
%
showed
the
best
adsorption
capacity,
percentage
27.326
%,
which
experienced
an
increase
namely
4.6881
FTIR
characteristic
peaks
functional
groups
contained
and
gelatin.
XRD
diffraction
pattern
HAp
ICSD
standard
spectrum
(#157481),
average
size
crystal
9.72
nm.
comparison,
5.25
SEM‐EDS
that
morphology
agglomerated
irregular
shapes
Ca/P
ratio
1.56.
SAA
surface
area
55.256
m
2
/g.
sorption
application
followed
Freudlich
isotherm
model
multilayer
on
heterogeneous
adsorbent
surface.
interaction
between
B
occurs
at
pseudo‐second‐order
can
reused
up
two
cycles
when
interacting
B.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Feb. 14, 2025
Crystal
violet
dye,
widely
used
in
industries,
poses
environmental
and
human
health
hazards
due
to
its
persistence
toxicity.
Effective
removal
methods
are
critical
mitigate
these
impacts.
This
study
presents
the
synthesis
of
a
novel
ZrO2@MnCO3@CdCO3
nanocomposite
for
efficient
crystal
dye
from
aqueous
solutions.
The
was
synthesized
using
precipitation
method
characterized
XRD,
SEM,
EDX,
BET
surface
area
analysis.
Adsorption
experiments
were
conducted
under
various
conditions,
including
pH,
contact
time,
concentration,
temperature.
exhibited
mesoporous
structure
(22.38
m2/g
area,
0.0935
cm3/g
total
pore
volume,
8.79
nm
average
size)
an
crystallite
size
76.30
nm.
maximum
adsorption
capacity
179.52
mg/g,
following
pseudo-second-order
kinetics
Langmuir
isotherm.
Thermodynamic
studies
revealed
exothermic,
physical,
spontaneous
process.
Regeneration
demonstrated
high
reusability
with
desorption
efficiency
reaching
99.67%
over
five
cycles.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Sept. 16, 2024
Crystal
violet
dye
poses
significant
health
risks
to
humans,
including
carcinogenic
and
mutagenic
effects,
as
well
environmental
hazards
due
its
persistence
toxicity
in
aquatic
ecosystems.
This
study
focuses
on
the
efficient
removal
of
crystal
from
aqueous
media
using
novel
Co
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 14, 2024
In
this
study,
nickel
ferrite
(NiFe2O4)
nanoparticles
were
synthesized
using
the
Pechini
sol-gel
method
and
modified
with
sodium
docusate
surfactant.
The
showed
an
enhanced
adsorption
capacity
of
384.62
mg/g
for
crystal
violet
dye,
compared
to
237.53
unmodified
NiFe2O4.
Characterization
was
performed
Fourier
transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
energy-dispersive
(EDX),
scanning
electron
microscopy
(SEM)
techniques.
process
spontaneous,
exothermic,
followed
Langmuir
isotherm
pseudo-second-order
kinetic
model.
Optimal
conditions
maximum
dye
removal
achieved
at
pH
10,
50
min,
298
K.
Additionally,
adsorbents
demonstrated
excellent
regeneration
reusability
over
five
adsorption-desorption
cycles
minimal
efficiency
loss.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Nov. 28, 2024
This
study
details
the
synthesis
and
application
of
magnetic
copper
ferrite
(CuFe2O4)
nanoparticles
for
efficient
removal
acid
red
88
crystal
violet
dyes
from
aqueous
solutions.
Utilizing
a
combustion
method,
were
synthesized
with
succinic
malic
acids
as
fuels,
yielding
samples
crystallite
sizes
28.54
±
0.90
nm
sample
19.79
0.75
acid.
Optimum
conditions
found
at
pH
2
10
violet,
contact
time
80
min
an
adsorbent
dosage
0.05
g
in
100
mL
solution.
Under
these
conditions,
using
achieved
sorptive
capacities
452.49
mg/g
446.43
while
reached
408.16
374.53
mg/g,
respectively.
Both
adsorption
processes
followed
pseudo-second-order
kinetic
model
aligned
Langmuir
isotherm.
Thermodynamic
analysis
confirmed
process
exothermic
spontaneous.
Practical
trials
demonstrated
efficiencies
above
95%
both
real
wastewater
samples,
underscoring
method's
practical
potential
water
purification
applications.