RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(11), P. 7314 - 7328
Published: Jan. 1, 2024
A
hard
magnetic
system
of
SrFe
12
O
19
nanomaterial
was
modified
according
to
the
composition
Sr
0.95
Gd
0.05
Fe
12−
x
Cu
with
=
0.0,
0.30,
and
0.60
using
sol–gel
technique.
Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(10), P. 105901 - 105901
Published: Aug. 21, 2024
Abstract
In
the
presence
scenario,
dye
pollution
has
become
a
serious
issue
in
present
environment
protection
which
need
extensive
attention
of
scientific
community.
Methylene
blue
(MB)
been
known
for
its
toxic
nature
and
widely
used
various
industries.
work,
we
reported
green
synthesis
alginate
capped
alumina
(Al
2
O
3
)
nanocomposite
(NC).
The
synthesized
Alg@Al
NC
have
verified
by
sophisticated
characterization
techniques
(XRD,
SEM,
EDX,
UV–vis
TEM,
FTIR,
XPS).
as
photocatalyst
degradation
MB
dye.
Furthermore,
photocatalytic
activity
studied
under
ultraviolet
(UV)
light.
obtained
results
exhibited
excellent
properties
NC.
effect
doses
(0.1–5
g
l
−1
),
pH
(1–10),
concentration
(50–120
ppm),
irradiation
time
(5–135
min)
UV
light
were
also
optimized.
highest
efficiency
99.2%
observed
via
investigations
kinetics
demonstrated
that
proceeded
along
pseudo-first-order
pathway
accordance
with
Langmuir–Hinshelwood
(L-H)
kinetic
model.
reusability
4
cycles
suggested
can
be
cycles.
this
study,
proposed
cost-effective
synthetic
method
preparation
application
removal
Molecules,
Journal Year:
2024,
Volume and Issue:
29(7), P. 1488 - 1488
Published: March 27, 2024
As
an
azo
dye,
OG
has
toxic
and
harmful
effects
on
ecosystems.
Therefore,
there
is
urgent
need
to
develop
a
green,
environmentally
friendly,
efficient
catalyst
activate
peroxymonosulfate
(PMS)
for
the
degradation
of
OG.
In
this
study,
catalysts
MIL-101(Fe)
NH2-MIL-101(Fe)
were
prepared
using
solvothermal
method
carry
out
experiments.
They
characterized
by
means
XRD,
SEM,
XPS,
FT-IR,
results
showed
that
successfully
prepared.
Then,
catalyst/PMS
system
was
constructed,
different
reaction
systems,
initial
pH,
temperature,
dosing,
PMS
concentration,
anion
effect
investigated.
Under
specific
conditions
(100
mL
solution
with
concentration
50
mg/L,
pH
=
7.3,
temperature
25
°C,
1
100
mmol/L,
dosage
0.02
g),
only
36.6%
within
60
min;
as
comparison,
could
reach
up
97.9%,
constant
k
value
0.07245
min−1.
The
NH2-MIL-101
(Fe)/PMS
able
achieve
at
values
(pH
3~9).
mechanism
analyzed
free-radical
quenching
tests.
tests
SO4•−,
•OH,
1O2
main
active
species
during
Processes,
Journal Year:
2024,
Volume and Issue:
12(2), P. 322 - 322
Published: Feb. 2, 2024
In
this
research,
a
new
catalyst
for
activating
persulfate
was
developed
by
loading
iron
and
nickel
ions
onto
powdered
activated
carbon
(PAC)
treating
methyl
orange,
the
preparation
process
optimized
characterized.
The
efficacy
of
treatment
evaluated
using
Chemical
Oxygen
Demand
(COD)
removal
rate,
which
reflects
impact
various
parameters,
including
dosage,
sodium
reaction
pH.
Finally,
recovery
reuse
performance
were
studied,
intermediate
products
analyzed.
optimal
conditions
preparing
determined
to
be
as
follows:
molar
ratio
Fe3+
Fe2+
Ni
4:1,
mass
Fe3O4
PAC
1:4,
calcination
temperature
700
°C,
time
4
h.
This
led
an
increase
in
surface
porosity
formation
hollow
structure
within
catalyst.
active
material
on
identified
ferrite,
comprising
elements
C,
O,
Fe,
Ni.
magnetic
property
is
beneficial
recycling.
With
COD
efficiency
oxidation
system
increased
first,
then,
decreased.
showed
good
catalytic
when
pH
value
range
3~11.
Furthermore,
Gas
Chromatography–Mass
Spectrometry
(GC-MS)
analysis
indicated
complete
orange
dye
molecules
system.
result
highlights
important
role
newly
persulfate.
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(19)
Published: May 15, 2024
Abstract
In
the
present
day,
photocatalysis
has
become
primary
and
most
promising
technology
to
generate
renewable
energy
degrade
environmental
pollutants.
Remarkable
efforts
have
been
made
improve
photocatalytic
efficiency.
Among
these,
introducing
an
external
magnetic
field
is
considered
a
strategy
boost
performance.
This
review
explores
dynamic
realm
of
improving
efficiency,
with
particular
emphasis
on
strategic
integration
fields.
Examining
recent
breakthroughs,
we
reviewed
influence
fields
diverse
catalyst
materials,
including
both
nonmagnetic
variants,
2D
semiconductors.
Comprehensive
coverage
provided
mechanisms
governing
dye
degradation,
materials
utilized
for
catalysis,
profound
impact
enhancing
reaction
kinetics.
also
focuses
advances
in
application
effect
catalysts
towards
degradation.
provides
forward‐looking
view,
highlighting
potential
field‐enhanced
play
central
role
sustainable
management.
