Journal of Materials Research and Technology,
Journal Year:
2022,
Volume and Issue:
22, P. 169 - 180
Published: Nov. 24, 2022
Hydroxyapatite
nanoparticles
(HAp
NPs)
were
synthesized
with
Muntingia
calabura
leaf
extract
as
solvent
and
eggshell
waste
a
calcium
source.
The
irregular
rod-like,
visualized
by
FESEM,
while
EDX
XPS
studies
confirmed
the
formation
of
hydroxyapatite.
HAp
NPs
polycrystalline
highly
thermostable
per
XRD
TGA
respectively.
FTIR
stable
coating
plant
phytochemicals
onto
NPs.
Congo
red
adsorption
using
nanoadsorbent
was
optimized
central
composite
design,
wherein
89.96%
33.18
mg/L
dye
adsorbed
in
137
min
at
180
RPM.
process
line
pseudo-second-order
model
Freundlich
isotherm
indicated
chemical
adsorption.
feasible,
exothermic,
spontaneous
thermodynamic
studies.
capacity
stood
maximum
217
mg/g,
indicating
its
superiority
among
other
adsorbents
reported
earlier.
It
is
evident
from
convincing
results
that
present
investigation
may
have
major
role
developing
novel
for
removal
out
wastewater
streams.
Journal of Saudi Chemical Society,
Journal Year:
2023,
Volume and Issue:
27(5), P. 101690 - 101690
Published: July 18, 2023
This
study
reports
the
adsorption
efficacy
of
hydroxyapatite
(HAp)
for
removing
Congo
Red
(CR)
dye
from
aqueous
solution.
HAp
was
synthesized
utilizing
chicken
eggshell
as
a
precursor
Ca
source.
Solid
state
synthesis
method
implemented
which
comprised
calcination
at
950°C
(E-HAp950).
XRD
analysis
confirmed
formation
bi-phasic
with
15.5%
β-TCP.
Elemental
composition
evaluated
by
XPS
and
EDX
analysis.
FESEM
revealed
particles
are
plate
spherical
shaped
also
TEM
images.
DLS
particle
size,
zeta
potential,
BET
surface
area
point
zero
charge
were
evaluated.
Adsorption
E-HAp950
CR
batch
experiment.
Maximum
capacity
(qmax)
found
to
be
9.64
mgg-1
best
explained
non-linear
fitting
(R2
=
0.98)
Langmuir
isotherm.
kinetics
profusely
followed
pseudo
second
order
kinetic
model
0.999)
qe
(experimental)
being
very
much
closer
(calculative)
this
model.
Thus,
prepared
waste
through
solid
has
potential
remove
toxic
dyes.
Results in Engineering,
Journal Year:
2023,
Volume and Issue:
18, P. 101114 - 101114
Published: April 23, 2023
Green
nanotechnology
has
emerged
as
an
environmentally
benign
and
safe
alternative
for
the
synthesis
applications
of
metal
oxide
nanoparticles.
Because
their
unique
features
like
magnetic
nature,
photocatalytic
efficiency,
antimicrobial
action,
etc,
Iron
nanoparticles
have
gotten
attention
in
recent
years.
Even
though
various
traditional
chemical
physical
synthetic
methods
are
there,
green
approach
is
renewable,
benign,
cost-effective,
sustainable.
Plants
microorganisms
biomaterials
renewable
synthesis.
In
this
review,
biological
iron-oxide
using
plants,
bacteria,
algae,
fungi
been
discussed.
These
plant
phytochemicals
biomolecules
secreted
by
act
both
reducing
stabilizing
agents
to
make
stable
functionalized
nanomaterials.
naturally
existing
compounds
successfully
explored
reduction
ion
precursors
capping
surface
nanomaterials
with
bioactive
functional
groups.
can
be
prepared
shapes
spherical,
cylindrical,
octahedral,
cubic,
hexagonal
rods,
elliptical,
etc.
With
desired
sizes
1–100
nm
range.
The
reaction
parameters
such
temperature,
time,
pH,
concentration
optimized
manipulate
yield
morphology
iron
Hydrothermal
some
mixing
techniques
employed
Proper
characterization
synthesized
leads
suitable
applications.
Several
spectroscopic
microscopic
UV–visible,
FT-IR,
HR-TEM,
EDX,
XRD,
Can
efficiently
utilized
interpret
properties.
Biosynthesized
sectors
industries
bio-medical,
food,
agriculture,
construction,
electronics,
Sustainable
nanomaterials,
techniques,
fields,
environmental
effects
discussed
review
article.
Arabian Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
16(4), P. 104646 - 104646
Published: Feb. 1, 2023
Nanotechnology
and
biomedical
sciences
open
the
door
to
a
wide
range
of
biological
research
topics
medical
applications
at
molecular
cellular
levels.
Biosynthesis
nanoparticles
has
been
proposed
as
cost-effective
environmentally
friendly
alternative
chemical
physical
methods.
Plant-mediated
synthesis
is
green
chemistry
approach
that
connects
nanotechnology
with
plants.
Novel
methods
ideally
synthesizing
NPs
are
thus
formed
ambient
temperatures,
neutral
pH,
low
costs
in
an
fashion.
The
goal
current
study
examine
cytotoxic
activity
hydroxyapatite
various
kinds
human
cancer
cells
potential
mechanisms
play.
Hydroxyapatite
were
created
by
sol–gel
method
using
lemon
extract
capping
reducing
agent
achieve
synthesis.
synthesized
characterized
XRD,
SEM,
FTIR,
TGA,
VSM
HRTEM.
They
tested
for
cytotoxicity
against
T98
SH-SY5Y,
two
cell
lines.
nanostructures
significantly
caused
vitro
death
cells.
results
confirmed
decreased
percentage
survived.
Nevertheless,
it
essential
perform
more
investigations
find
out
exact
involved.
Binding
energy
Hydroxyapatite-
SH-S5YS
complex
calculated
docking.
However,
underlying
mechanisms.
Inorganics,
Journal Year:
2024,
Volume and Issue:
12(6), P. 143 - 143
Published: May 22, 2024
This
work
studies
the
synthesis,
characterization,
and
application
of
CuFe2O4
nanoparticles
for
removal
acid
blue
113
malachite
green
dyes
from
aqueous
media.
Utilizing
combustion
procedure,
were
synthesized
using
two
different
fuels:
L-alanine
(CFA)
L-valine
(CFV).
Besides,
characterized
through
some
tools,
including
Fourier
transform
infrared
(FTIR),
X-ray
diffraction
(XRD),
energy-dispersive
(EDX),
field
emission
scanning
electron
microscope
(FE-SEM).
XRD
analysis
verified
creation
a
cubic
spinel
structure
without
any
contaminants,
revealing
average
crystallite
sizes
26.37
17.65
nm
CFA
CFV
samples,
respectively.
The
FTIR
spectra
exhibited
peaks
indicative
metal-oxygen
bond
stretching,
verifying
presence
formation.
Elemental
via
EDX
confirmed
stoichiometric
composition
typical
copper
ferrite.
In
addition,
FE-SEM
displayed
that
samples
are
composed
particles
with
spherical
irregular
shapes,
measuring
diameters
188.35
132.78
nm,
maximum
adsorption
capabilities
towards
281.69
297.62
mg/g,
Also,
products
dye
280.11
294.99
Kinetic
equilibrium
revealed
process
onto
followed
pseudo-second-order
model
Langmuir
isotherm.
Thermodynamic
indicated
was
physical,
spontaneous,
exothermic.
