Coatings,
Год журнала:
2023,
Номер
13(5), С. 929 - 929
Опубликована: Май 16, 2023
The
modified
nano-CeO2/Zn–Mn
phosphate
composite
coating
was
deposited
on
AZ91D
magnesium
alloy
by
chemical
conversion
to
enhance
its
densification
and
corrosion
resistance.
growth
mechanism
resistance
of
the
is
clarified
adding
different
concentrations
ZnO
a
certain
amount
nano-CeO2
into
phosphate-plating
solution.
XRD
EDS
show
that
membrane
mainly
composed
MgO,
Mg(OH)2,
Mn3(PO4)2·5H20,
Zn,
Zn3(PO4)2·4H2O
CeO2.
Among
them,
matrix
presents
dispersed
granule,
clustered
petal-shaped
under
action
ZnO.
Under
optimum
concentration,
after
nano-CeO2,
dense
grains
appear,
cracks
pores
in
riverbed
are
obviously
reduced.
Compared
with
single-layer
coating,
performance
significantly
improved.
results
obvious
double-layer
structure
observed
SEM,
thickness
about
48
μm.
LCSM
shows
surface
roughness
moderate.
EIS
when
fitting
impedance
8050.43
Ω
PH
=
3,
dropping
time
copper
sulfate
58.6
s,
which
better
than
coating.
Tafel
polarization
curve
current
density
lower
single
decreased
from
1.86
×
10−6
A/cm2
9.538
10−7
A/cm2,
Journal of environmental chemical engineering,
Год журнала:
2023,
Номер
11(3), С. 110027 - 110027
Опубликована: Апрель 30, 2023
Powdered
photocatalysts
have
been
extensively
investigated
for
the
decontamination
of
various
pollutants.
In
spite
superior
photocatalytic
performance
mediated
by
powdered
materials,
major
strides
in
production
photoactive
coatings
are
a
crucial
issue
since
they
open
up
world
industrial
opportunities
photocatalysis.
Plasma
electrolytic
oxidation
is
promising
technique,
which
capable
fabricating
ceramic
with
controllable
porous
structure
at
low
cost,
simple
and
easy
operation,
high
metallurgical
bonding
strength
to
substrate,
possibility
coating
formation
on
complex
geometry
or
large
size
substrates.
This
review
aimed
summarizing
fundamental
aspects
PEO
process
together
effects
activity
multiple
parameters
such
as
electrolyte
additive,
deposition
time,
well
electrical
based
chemical
composition
substrate.
The
role
duplex
treatment
improvement
also
summarized.
Furthermore,
compare
systems,
efficiency
(PCE)
was
proposed.
overall,
this
offers
distillate
available
information
coatings,
can
influence
design
creation
more
effective
materials
impulse
their
real-world
application.
Micromachines,
Год журнала:
2023,
Номер
14(3), С. 701 - 701
Опубликована: Март 22, 2023
Ta2O5
coatings
were
created
using
micro-arc
discharges
(MDs)
during
anodization
on
a
tantalum
substrate
in
sodium
phosphate
electrolyte
(10
g/L
Na3PO4·10H2O).
During
the
process,
size
of
MDs
increases
while
number
decreases.
The
elements
and
their
ionization
states
present
identified
optical
emission
spectroscopy.
hydrogen
Balmer
line
Hβ
shape
analysis
revealed
presence
two
types
MDs,
with
estimated
electron
densities
around
1.1
×
1021
m−3
7.3
m−3.
effect
duration
surface
morphology,
phase
chemical
composition,
absorption,
photoluminescent,
properties
coatings,
as
well
applications
photocatalytic
degradation
methyl
orange,
investigated.
crystalline
primarily
composed
orthorhombic
phase.
Since
feature
strong
absorption
ultraviolet
light
region
below
320
nm,
activity
is
very
high
time
process.
This
was
associated
an
increase
oxygen
vacancy
defects
formed
which
confirmed
by
photoluminescent
measurements.
after
8
h
irradiation
69%,
74%,
80%,
88%
for
3
min,
5
10
15
respectively.
Metals,
Год журнала:
2024,
Номер
14(3), С. 366 - 366
Опубликована: Март 21, 2024
MgAl
oxide
coatings
composed
of
MgO
and
MgAl2O4
phases
were
doped
with
CeO2
particles
via
plasma
electrolytic
oxidation
(PEO)
AZ31
magnesium
alloy
in
a
5
g/L
NaAlO2
water
solution.
Subsequently,
up
to
8
added.
Extensive
investigations
conducted
examine
the
morphology,
chemical
phase
compositions,
and,
most
importantly,
photoluminescent
(PL)
properties
photocatalytic
activity
(PA)
during
photodegradation
methyl
orange.
The
number
incorporated
into
depends
on
concentration
aluminate
electrolyte.
However,
do
not
significantly
affect
thickness,
structure,
or
surface
morphology
coatings.
PL
emission
spectrum
is
divided
two
bands:
one
350–600
nm
range
related
structural
defects
MgO,
another
much
more
intense
band
600–775
attributed
F+
centres
MgAl2O4.
have
significant
effect
intensity
red
spectral
region,
but
first
increases
particles.
PA
MgAl/CeO2
higher
than
that
pure
coating
developed
electrolyte
2
exhibited
highest
PA.
remained
chemically
physically
stable
across
multiple
cycles,
indicating
their
potential
for
applications.
Sustainability,
Год журнала:
2023,
Номер
15(9), С. 7256 - 7256
Опубликована: Апрель 27, 2023
Advanced
oxidation
processes
(AOPs)
hold
great
promise
to
degrade
and
detoxify
industrial-based
effluents.
The
Reactive
Red
45
dye
aqueous
solutions
were
treated
with
AOP
using
UV
gamma
radiation
alone
then
in
the
presence
of
H2O2.
initial
concentration,
exposure
time,
gamma-ray
absorbed
dose
optimized
for
maximum
degradation.
degradation
was
88.85%
77.7%
UV/H2O2
(1
mL/L)
at
a
time
180
min
50
mg/L
100
mg/L,
respectively.
noted
as
100%
93.82%
subjected
gamma/H2O2
2
kGy.
chemical
oxygen
demand
reduced
77%
85%
by
treating
samples
gamma/H2O2,
removal
efficiency
(G-value),
constant
(k),
D0.50,
D0.90,
D0.99
gamma-irradiated
also
calculated.
reduction
toxicity
monitored
Allium
cepa,
Hemolytic,
brine
shrimp
(Artemia
salina)
tests
while
Ames
test
performed
mutagenic
assessment.
A.
cepa
showed
39.13%,
36.36%,
47.82%
increases
root
length
(RL),
count
(RC),
mitotic
index
(MI),
respectively,
UV/H2O2-treated
48.78%,
48.14%,
57.14%
shown
conjunction
hemolytic
21.25%
23.21%
hemolysis
after
treatments,
84.09%
90.90%
decreases
nauplii
death
mutagenicity
up
84.41%
77.87%,
it
87.83%
80.88%
TA98
TA100
bacterial
strains,
advanced
based
on
H2O2
can
be
applied
detoxification
textile
waste
effluents
efficiently.
