Journal of Physics Conference Series,
Год журнала:
2024,
Номер
2844(1), С. 012010 - 012010
Опубликована: Дек. 1, 2024
Abstract
With
their
exceptional
qualities
such
as
greater
specific
surface
area,
a
atoms
fraction,
non-toxicity,
and
outstanding
redox
properties,
manganese
oxide
nanoparticles-a
transition
metal
with
variety
of
crystal
phases,
morphologies,
structural
diversity-are
attracting
attention
for
use
in
several
storage
science
applications,
particularly
batteries,
supercapacitors,
energy
conversion,
environmental
catalysis,
wastewater
treatment.
Particle
size,
morphology,
Mn
x
+
oxidation
state
are
just
few
the
variables
that
must
be
precisely
controlled
to
fully
realize
application
potential.
The
present
study
outlines
synthesis
nanoparticles
through
facile
co-precipitation
process
employs
double
precursor
salts
manganese,
namely
sulphate
potassium
permanganate,
along
three
surfactants:
Cationic-Potassium
chloride
(KCl),
Non-ionic
-
Polyethylene
glycol
(PEG),
Anionic-
sodium
dodecyl
(SDS),
respectively.
At
500°C,
samples
subsequently
annealed.
Samples
examined
using
XRD,
both
prepared
In
absence
any
calcination
treatment,
MnO
2
-precursor
was
primarily
an
amorphous
phase
indistinct
α-MnO
patterns
all
samples.
Well-defined
crystalline
prominent
peaks
α-Mn
O
3
some
traces
visible
different
surfactants
without
after
at
500°C.
Crystallite
sizes
macrostrains
etc
estimated.
By
this
one-pot
method,
mixed
phases
were
produced.
thermogravimetric
analysis
also
supports
results.
Eco-Environment & Health,
Год журнала:
2024,
Номер
3(1), С. 89 - 106
Опубликована: Янв. 23, 2024
The
increasing
intensity
of
human
activities
has
led
to
a
critical
environmental
challenge:
widespread
metal
pollution.
Manganese
(Mn)
oxides
have
emerged
as
potentially
natural
scavengers
that
perform
crucial
functions
in
the
biogeochemical
cycling
elements.
Prior
reviews
focused
on
synthesis,
characterization,
and
adsorption
kinetics
Mn
oxides,
along
with
transformation
pathways
specific
layered
oxides.
This
review
conducts
meticulous
investigation
molecular-level
oxidation
mechanisms
hazardous
metals,
including
patterns,
coordination,
sites,
redox
processes.
We
also
provide
comprehensive
discussion
both
internal
factors
(surface
area,
crystallinity,
octahedral
vacancy
content
reactant
concentration)
external
(pH,
presence
doped
or
pre-adsorbed
ions)
affecting
adsorption/oxidation
metals
by
Additionally,
we
identify
existing
gaps
understanding
these
suggest
avenues
for
future
research.
Our
goal
is
enhance
knowledge
oxides'
regulatory
roles
element
translocation
at
microstructure
level,
offering
framework
developing
effective
adsorbents
pollution
control
strategies.
Journal of Nanomaterials,
Год журнала:
2024,
Номер
2024, С. 1 - 29
Опубликована: Фев. 20, 2024
Apart
from
our
imagination,
the
nanotechnology
industry
is
rapidly
growing
and
promises
that
substantial
changes
will
have
significant
economic
scientific
impacts
be
applicable
to
a
wide
range
of
areas,
such
as
aerospace
engineering,
nanoelectronics,
environmental
remediation,
medical
healthcare.
In
field,
magnetic
materials
play
vital
roles
resonance
imaging
(MRI),
hyperthermia,
drug
delivery.
Among
them,
manganese
oxide
garnered
great
interest
in
biomedical
applications
due
its
different
oxidation
states
(Mn2+,
Mn3+,
Mn4+).
Manganese
nanostructures
are
widely
explored
for
their
availability,
diverse
morphologies,
tunable
properties.
this
review,
cogent
contributions
oxides
summarized.
The
crystalline
structure
Mn
highlighted.
synthesis
approaches
Mn-based
nanoparticles
outlined.
important
manganese-based
like
MRI,
delivery
This
review
conducted
cover
future
impact
MnOx
diagnostic
therapeutic
applications.
Texila international journal of public health,
Год журнала:
2024,
Номер
12(special issue 1)
Опубликована: Апрель 30, 2024
Ruthenium-doped
manganese
oxide
nanoflowers
(denoted
as
Ru-Mn3O4
NFs)
were
synthesized
via
microwave-assisted
hydrothermal
(MW-HT)
method.
The
prepared
NFs
evaluated
for
antimicrobial,
anti-inflammatory,
anti-oxidant
and
hemolytic
assays.
Because
of
their
unique
physicochemical
features,
low
cytotoxicity,
excellent
stability,
exceptional
antibacterial
action,
significant
interest
in
biomedical
field.
Various
analytical
techniques
used
to
assess
the
related
phase
constitution,
elemental
content,
surface
morphology.
X-ray
diffraction
(XRD)
patterns
field-emission
scanning
electron
microscopy
(FE-SEM)
micrographs
revealed
that
had
a
tetragonal
with
nanoflowers-like
shape
Ru
mainly
existed
metallic
state.
It
has
been
found
hold
higher
microbial
activities
against
various
pathogens,
making
them
ideal
options
fighting
bacterial
infections.
Chemistry of Inorganic Materials,
Год журнала:
2024,
Номер
2, С. 100039 - 100039
Опубликована: Фев. 1, 2024
In
this
work,
few
precursors
(MnCl2.4H2O,
MnCO3,
MnO2,
and
KMnO4)
were
simply
heated
at
650
°C
for
10
h
examined
their
phase
formation
thermal
features
of
Mn-based
oxides.
Cubic
Mn2O3
materials
with
space
group,
Ia-3
(206)
formed
the
heat
treated
products
MnCl2.4H2O
MnO2
precursors.
However,
purity
is
differed
product
MnCl2.4H2O,
three
weak
impurities
are
noted
along
major
phase.
Mixed
phases
Mn5O8
observed
heating
MnCO3
precursor.
The
resemblance
δ-MnO2
was
KMnO4
While
show
low
weight
loss
1.5–3.3
%,
precursor
shows
relatively
high
22.6
%
exothermic
endothermic
peaks
100
797
°C,
respectively.
nanomaterials
exhibit
a
morphology
resembling
nanorods.
Abstract
The
synthesis
of
triple
metal
oxide
nanocomposites
has
revolutionized
materials
science
due
to
their
unique
properties
resulting
from
the
interaction
multiple
components.
This
study
aimed
synthesize
mixed
using
a
co‐precipitation
method
with
copper
sulfate,
silver
nitrate,
and
potassium
permanganate
as
precursor
salts
sodium
hydroxide
precipitating
agent.
Ag−Cu−MnO
composite
was
extensively
characterized
X‐ray
diffraction
(XRD),
scanning
electron
microscopy
energy‐dispersive
spectroscopy
(SEM‐EDS),
Fourier
transform
infrared
(FT‐IR).
exhibited
effective
bactericidal
efficacy
against
various
bacterial
strains,
including
Enterobacter
bugandensis,
Bacillus
cereus,
Staphylococcus
aureus,
Pseudomonas
aeruginosa.
Moreover,
demonstrated
notable
photocatalytic
activity,
degrading
87.26
%
50
ppm
Eosin
Yellow
within
140
minutes
under
sunlight
irradiation,
monitored
by
UV‐vis
spectrophotometer.
highlights
dual
functionality
synthesized
both
photocatalyst
an
antibacterial
These
findings
underscore
its
potential
for
diverse
applications
in
environmental
remediation
healthcare,
marking
significant
advancement
science.
