Particle & Particle Systems Characterization,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 6, 2024
Abstract
The
demand
for
wastewater
treatment
a
sustainable
future
has
provoked
the
development
of
an
ecologically
acceptable
photocatalytic
approach.
However,
exploration
highly
efficient
green
metal
free
catalyst
dye
degradation
under
normal
light
is
yet
challenging.
In
this
work,
prepared
sericin
derived
carbon
quantum
dots
(CQDs)
are
presented
as
photocatalyst
well‐known
hazardous
dyes
namely
crystal
violet
and
Rhodamine‐B
light.
Using
several
radical
scavenging
agents,
mechanism
involved
in
activity
CQDs
demonstrated.
This
novel
offers
well
alternative
mineralization
organic
with
good
efficiency.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 6, 2025
This
study
investigates
the
biosynthesis
of
iron
oxide
nanoparticles
(Fe2O3NPs)
using
cell-free
supernatant
Pseudomonas
fluorescens.
The
synthesized
Fe2O3NPs
were
characterized
through
UV–VIS,
XRD,
FTIR,
FESEM,
EDX,
TEM,
BET,
and
VSM
analyses.
XRD
results
confirmed
that
successfully
EDX
analysis
indicated
accounted
for
89.5%
sample
composition.
Imaging
via
SEM
TEM
revealed
average
diameters
20.43
±
5.38
nm
24.32
5.03
nm,
respectively.
antimicrobial
effects
assessed
against
four
bacterial
strains
fungal
species.
Inhibition
zones
8.35
0.103
mm
8.31
0.128
observed
syringae
Staphylococcus
aureus
at
a
concentration
400
μg
mL−1
Fe2O3NPs.
Antifungal
efficacy
showed
growth
rate
reductions
90.4%
Aspergillus
niger,
71.1%
Monilinia
fructigena,
68.8%
Botrytis
cinerea,
84.2%
Penicillium
expansum,
compared
to
controls.
demonstrated
photocatalytic
degradation
efficiencies
89.93%,
84.81%,
79.71%
methyl
violet,
orange,
methylene
blue,
Also
exhibited
significant
DPPH
free
radical
scavenger
activity
with
an
IC50
value
8.45
0.59
mL−1.
study's
findings
underscored
potential
in
addressing
environmental
pollution
combating
pathogenic
microorganisms.
Langmuir,
Journal Year:
2023,
Volume and Issue:
39(36), P. 12865 - 12877
Published: Aug. 28, 2023
The
MoS2-based
reduced
graphene
oxide
aerogel
(MoS2-rGOA)-assisted
organic
transformation
reactions
are
presented.
MoS2-rGOA
is
used
as
a
heterogeneous
catalyst
for
the
reduction
of
benzene
derivatives
such
benzaldehyde,
nitrobenzene,
and
benzonitrile
to
benzyl
alcohol,
aniline,
benzamide
their
derivatives,
respectively,
in
green
solvents
(water/methanol)
reducing
agents
(hydrazine
hydrate
having
N2
H2
byproducts).
mechanistic
features
pathway,
substrate
scope,
best
suitable
conditions
by
varying
temperature,
solvent,
agent,
loading,
time,
etc.
optimized.
All
synthesized
products
obtained
quantitative
yield
with
purity
well
characterized
based
on
nuclear
magnetic
resonance
analysis.
Further,
it
also
observed
that
our
efficiently
recyclable
works
checked
up
5
cycles.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(14), P. 7876 - 7876
Published: July 18, 2024
Iron
oxide
nanoparticles
were
synthesized
by
co-precipitation
using
three
different
iron
salt
stoichiometric
mole
ratios.
Powder
X-ray
diffraction
patterns
revealed
the
inverse
cubic
spinel
structure
of
magnetite
oxide.
Transmission
electron
microscopic
images
showed
Fe3O4
with
shapes
and
average
particle
sizes
5.48
nm
for
Fe3O4-1:2,
6.02
Fe3O4-1.5:2,
6.98
Fe3O4-2:3
an
energy
bandgap
3.27
to
3.53
eV.
The
as-prepared
used
as
photocatalysts
degrade
brilliant
green
(BG),
rhodamine
B
(RhB),
indigo
carmine
(IC),
methyl
red
(MR)
under
visible
light
irradiation.
photocatalytic
degradation
efficiency
80.4%
was
obtained
from
Fe3O4-1:2
green,
61.5%
Fe3O4-1.5:2
B,
77.9%
73.9%
both
red.
This
indicates
that
is
more
efficient
in
than
one
dye.
study
shows
degrades
most
effectively
at
pH
9,
best
6.5,
efficiently
3.
Recyclability
experiments
can
be
recycled
four
times
are
photostable.
ACS Sustainable Resource Management,
Journal Year:
2024,
Volume and Issue:
1(2), P. 278 - 288
Published: Jan. 16, 2024
Herein,
we
have
described
a
simple
and
viable
approach
to
use
the
waste
byproduct
of
steel
industries:
red
iron
oxide
dust
(IOD)
for
synthesizing
its
reduced
version
as
reduced-IOD
(r-IOD).
The
r-IOD
possess
active
multiphases
oxides
(Fe@Fe3O4@Fe2O3)
is
used
adsorption
three
organic
dyes.
surface
area
magnetically
found
be
∼4.5
times
than
that
IOD
shows
better
mesoporosity.
Due
having
larger
area,
efficient
dyes
include
two
anionic
azo
dyes,
namely,
RG
19
(Reactive
Green
19),
RO
16
Orange
16)
one
cationic
MG
(Malachite
Green)
dye,
with
maximum
capacities
∼2162.9,
∼2273.1,
∼1400.2
mg
g–1,
respectively.
Various
batch
experiments
related
kinetics,
isotherms,
thermodynamics
are
studied
understand
rate,
order,
type,
feasibility
adsorption.
effects
temperature,
pH,
loading,
concentration,
on
process
also
investigated.
Moreover,
capacity
satisfactorily
tested
via
an
external
spiking
method
toward
dye
removal
from
industrial
wastewater
laboratory
wastewater.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(25), P. 3449 - 3452
Published: Jan. 1, 2024
Steel
industry
waste-derived
rod-like
Fe
3
O
4
-NPs
were
used
for
thermo-catalytic
reduction
of
CO
2
to
acetic
acid
in
aqueous-H
medium.
H
facilitates
the
reaction
by
generating
high
concentrations
OH˙
and
+/
˙,
supporting
yield.
