Reactions,
Journal Year:
2025,
Volume and Issue:
6(2), P. 25 - 25
Published: April 8, 2025
This
review
analyzes
TiO2-based
coatings
formed
by
the
plasma
electrolytic
oxidation
(PEO)
process
of
titanium
for
photocatalytic
degradation
methyl
orange
(MO)
under
simulated
solar
irradiation
conditions.
PEO
is
recognized
as
a
useful
technique
creating
oxide
on
various
metals,
particularly
titanium,
to
assist
in
organic
pollutants.
photocatalysts
form
are
more
practical
than
powder
because
photocatalyst
does
not
need
be
recycled
and
reused
after
wastewater
treatment,
which
an
expensive
time-consuming
process.
In
addition,
main
advantage
synthesis
its
short
processing
time
(a
few
minutes),
it
excludes
annealing
step
needed
convert
amorphous
TiO2
into
crystalline
phase,
prerequisite
possible
application.
Pure
have
low
efficiency
MO,
due
rapid
recombination
photo-generated
electron/hole
pairs.
this
review,
recent
advances
sensitization
with
narrow
band
gap
semiconductors
(WO3,
SnO2,
CdS,
Sb2O3,
Bi2O3,
Al2TiO5),
doping
rare
earth
ions
(example
Eu3+)
transition
metals
(Mn,
Ni,
Co,
Fe)
summarized
effective
strategy
reduce
pairs
improve
coatings.
Applied Surface Science Advances,
Journal Year:
2023,
Volume and Issue:
18, P. 100541 - 100541
Published: Dec. 1, 2023
The
practical
application
of
powder
photocatalysts
for
visible
light
catalysis
can
be
limited
due
to
the
accumulation
nanoparticles
and
complexity
their
recovery.
Therefore,
photocatalytic
coatings
are
suitable
candidates
pollutant
degradation.
In
this
study,
a
hierarchical
TiO2/WO3
hybrid
coating
was
created
on
Ti
substrate
using
plasma
electrolytic
oxidation
(PEO)
followed
by
hydrothermal
treatment
as
post-treatment.
exhibits
superior
performance
methylene
blue
removal
under
compared
pure
TiO2
coating,
increasing
MB
from
41
88.3
%.
morphology
consists
combination
nanorods.
decrease
in
photoluminescence
(PL)
intensity
indicates
that
inhibits
photo-induced
e−-h+
recombination.
optimal
revealed
exceptional
stability
efficiency
even
after
four
cycles.
impact
parameters
such
concentration
pH
investigated
well.
scavenging
test
results
reveal
main
active
radicals
photocatalysis
hydroxyl
(HO•)
holes
(h+)
species.
According
Mott-Schottky
DRS
(Diffuse
Reflectance
Spectroscopy)
results,
photodegradation
mechanism
proposed.
