Case Studies in Chemical and Environmental Engineering,
Journal Year:
2023,
Volume and Issue:
7, P. 100303 - 100303
Published: Jan. 20, 2023
Metal
ferrite
(MFe2O4)
is
a
type
of
ceramic
oxide
with
magnetoelectric
properties.
In
this
review,
we
have
collected
and
analyzed
the
research
trends
MFe2O4
as
heterogeneous
catalyst
in
multicomponent
reactions
(MCRs).
could
activate
specific
groups
reactants
by
increasing
their
electrophilicity
acting
Lewis
acid
capable
accepting
electrons
to
form
covalent
bonds.
Using
has
been
shown
produce
simple
high
yields,
easy
separate,
more
environmentally
friendly.
As
reusable
green
catalyst,
spinel
stability,
so
it
can
be
used
repeatedly.
Heliyon,
Journal Year:
2023,
Volume and Issue:
9(6), P. e16461 - e16461
Published: May 26, 2023
In
this
research,
Fe3O4@HZSM-5
magnetic
nanocomposite
was
synthesized
via
a
coprecipitation
method
for
metronidazole
(MNZ)
degradation
from
aqueous
solutions
under
ultrasonic
irradiation
which
showed
superb
sonocatalytic
activity.
The
magnetite
characterized
by
using
field-emission
scanning
electron
microscope-energy
dispersive
X-ray
Spectroscopy,
(FESEM-EDS),
Line
Scan,
Dot
Mapping,
diffraction
(XRD),
vibrating
sample
magnetometer
(VSM),
and
Brunauer-Emmett-Teller
(BET).
To
investigate
the
activity
of
nanocomposite,
removal
conditions
were
optimized
evaluating
influences
operating
parameters
like
dosage
catalyst,
reaction
time,
pH,
concentration
H2O2,
MNZ
concentration,
pH
on
removal.
maximum
efficiency
TOC
at
time
40
min,
catalyst
dose
0.4
g/L,
H2O2
1
mM,
initial
25
mg/L,
7
achieved
98%
81%,
respectively.
Additionally,
in
real
wastewater
optimal
obtained
83%.
results
that
Langmuir-Hinshelwood
kinetic
model
KL-H
=
0.40
L
mg-1,
KC
1.38
mg/L
min)
can
describe
process.
radical
scavenger
tests
indicated
major
reactive
oxygen
species
formed
hydroxyl
radicals
Sono-Fenton-like
Evaluation
reusability
an
85%
reduction
after
seven
cycles.
Based
results,
it
be
concluded
as
heterogeneous
nano-catalysts
to
effectively
degrade
MNZ,
observed
stability
recyclability
demonstrated
promising
treatment
contaminated
with
antibiotics.
RSC Advances,
Journal Year:
2022,
Volume and Issue:
12(38), P. 25081 - 25095
Published: Jan. 1, 2022
We
herein
report
the
controllable
synthesis
of
spherical
cobalt
ferrite
nanoparticles
with
average
crystallite
size
in
range
3.6-12.9
nm
using
a
facile,
eco-friendly,
hydrothermal
method.
The
treatment
was
carried
out
by
utilizing
nitrate,
ferric
and
ammonium
hydroxide
presence
absence
Arabic
gum
as
surfactant
agent.
purity
crystallinity
products
were
tuned
varying
reaction
conditions
such
time
(0.5-8
h),
temperature
(120-180
°C),
percentage
ethylene
glycol
(0-100%
(v/v)),
pH
(8-9.6),
amount
(0-2
g).
characterized
prepared
X-ray
diffraction
(XRD),
field-emission
scanning
electron
microscopy
(FE-SEM),
Fourier
transform
infrared
spectroscopy
(FT-IR),
high-resolution
transmission
(HR-TEM),
energy-dispersive
analysis
(EDS),
selected
area
(SAED)
patterns,
UV-visible
diffuse
reflectance
spectra
(DRS).
optimal
performed
at
180
°C
9.6
for
4
h
aqueous
media.
results
also
revealed
that
as-prepared
spinel
have
an
estimated
optical
band
gap
energy
ca.
1.6-1.9
eV,
indicating
semiconducting
characteristics
products.
RSC Advances,
Journal Year:
2022,
Volume and Issue:
12(52), P. 33459 - 33468
Published: Jan. 1, 2022
Magnetic
boehmite
nanoparticles
were
synthesized
from
a
hybrid
of
and
Fe
3
O
4
nanoparticles.
Then,
it
was
applied
as
homoselective,
highly
efficient,
cheep,
heterogeneous
recoverable
nanocatalyst
in
the
synthesis
tetrazole
derivative.
Materials Advances,
Journal Year:
2023,
Volume and Issue:
4(8), P. 1795 - 1830
Published: Jan. 1, 2023
The
present
review
article
sheds
light
on
the
fabrication
of
heterogeneous
metal
oxide-supported
nanostructure-based
catalysts
for
boosting
industrially
significant
oxidation
processes.
Applied Organometallic Chemistry,
Journal Year:
2025,
Volume and Issue:
39(3)
Published: Feb. 24, 2025
ABSTRACT
The
chemical
synthesis
via
utilizing
carbon
dioxide
as
an
easily
accessible,
low‐price,
nonpoisonous,
and
versatile
C1
elementary
unit
is
a
remarkably
appealing
but
complex
challenging
conversion
from
the
point
of
industrial
academic
aspects.
cycloaddition
(CO
2
)
epoxides
(EPs)
eco‐friendly
route
in
fixation
CO
into
useful
cyclic
carbonate
(CY)
products,
which
have
been
broadly
operated
regarding
utility
polymeric
CYs.
Magnetic
nanocatalysts
are
vastly
utilized
diverse
organic
reactions
owing
to
their
magnetic
isolation
recoverability
features.
usage
magnetite
(Fe
3
O
4
nanoparticles
solid
support
for
immobilization
diversity
metals,
bimetals,
organocatalysts,
organoligands
has
shown
massive
development
benign
conversions
largely
enormous
surface
area,
low‐cost
nature,
ease
preparation.
significant
benefits
superior
yields,
short‐time
reaction,
moderate
reaction
conditions,
recyclability,
easy
workup.
This
current
review
highlights
applications
research
will
be
helpful
valuable
researchers
due
EPs
make
CY
intermediates
significantly
employed
extensive
compound
products.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: March 27, 2025
In
this
project,
we
introduced
new
heterogeneous
nanocatalysts
featuring
amine
branches
and
decorated
with
inexpensive
copper
metal
(Fe3O4@SiO2@M-D-Cu
Fe3O4@SiO2@M-D).
These
were
characterized
using
several
analytical
techniques,
including
SEM,
FT-IR,
EDX,
XRD,
TGA,
ICP-OES.
We
investigated
their
catalytic
activity
in
traditional
pot
reactions,
focusing
on
the
three-component
synthesis
of
xanthene
chromene
compounds.
The
properties
future
potential
these
include
high
yield,
recyclability,
ease
operation,
use
environmentally
friendly
solvents.
Additionally,
catalysts
can
be
easily
removed
from
reaction
solution
an
external
magnet
reused
up
to
eight
times
without
a
decrease
activity.
ACS Omega,
Journal Year:
2022,
Volume and Issue:
7(11), P. 9754 - 9764
Published: March 14, 2022
A
new
composite,
cucurbit[6]uril
(CB[6])-supported
magnetic
nanoparticles,
Fe3O4–CB[6],
was
synthesized
via
a
co-precipitation
method
in
air
and
fully
characterized
by
Fourier
transform
infrared
spectroscopy,
powder
X-ray
diffraction,
photoelectron
field-emission
scanning
electron
microscopy,
high-resolution
transmission
energy-dispersive
thermogravimetric
analysis,
inductively
coupled
plasma–mass
spectrometry,
vibrating
sample
magnetometry
techniques.
It
has
been
found
to
be
highly
efficient,
economic,
sustainable
heterogeneous
catalyst
employed
for
the
first
time
synthesis
of
series
biologically
important
2-substituted
benzimidazoles
from
various
benzyl
alcohols
1,2-diaminobenzenes
under
solvent-free
conditions
acceptorless
dehydrogenative
coupling
afford
corresponding
products
good
excellent
yields
(68–94%).
The
nature
nanocomposite
facilitates
facile
recovery
reaction
mixture
an
external
magnet.
can
reused
up
five
times
with
negligible
loss
its
catalytic
activity.
All
isolated
were
1H
13C{1H}
NMR
spectroscopy.
