Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(16), P. 2341 - 2341
Published: Aug. 15, 2023
In
this
work,
photocatalytic
materials
constituted
by
Cr-doped
TiO2
(Cr-TiO2)
decorated
with
noble
metals
show
high
effectiveness
in
the
mineralization
of
Acid
Orange
7
(AO7)
and
disinfection
real
river
water.
The
were
firstly
obtained
sol-gel
method
to
get
Cr-TiO2
that
was
subsequently
modified
photochemical
deposition
Ag
or
Pd
nanoparticles
(Ag/Cr-TiO2,
Pd/Cr-TiO2).
Chemical-physical
characterization
results
evidenced
homogeneously
distributed
on
surface.
By
using
Pd(0.25%)/Cr-TiO2,
AO7
discoloration
efficiency
about
91.4%
after
only
60
min
visible
irradiation,
which
can
be
due
lowest
band
gap
material.
Moreover,
nitrates,
chlorides,
total
hardness,
coliform
bacteria
content
significantly
decreased
treatment
water
samples
(that
is
contaminated
industrial
domestic
effluents)
under
UV
light
irradiation
presence
TiCrOx
metals.
One
hundred
percent
elimination
rate
for
E.
coli,
coliforms,
other
enterobacteriaceae
(without
regrowth)
achieved
Ag/Cr-TiO2
as
photocatalyst.
e-Journal of Surface Science and Nanotechnology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
Visible
light-mediated
photocatalysis,
which
relies
on
the
ability
to
absorb
low-energy
visible
light,
is
a
greener
approach
for
degrading
organic
pollutants
in
water.
Among
photocatalysts,
titanium
dioxide
(TiO2)
nanoparticles
(NPs)
are
widely
utilized
because
of
their
affordability,
nontoxicity,
large
surface
area,
and
strong
photocatalytic
properties.
However,
effectiveness
restricted
ultraviolet
range,
recovery
can
be
difficult
when
they
NP
form.
Nanofibers,
other
hand,
provide
similar
high
area
simpler
recover.
Additionally,
coupling
metal
cations
such
as
silver
(Ag)
TiO2
extends
sensitivity
light
region,
enhancing
efficiency.
In
this
work,
electrospun
nanofiber
mats
(NFMs)
were
fabricated
decorated
with
Ag
NPs.
The
NFMs
designed
extended
use
improved
reusability
wastewater
treatment,
reducing
environmental
risks
associated
catalysts.
was
introduced
via
wet
impregnation
nitrate
reduced
metallic
using
plasma
treatment.
plasma-treated
Ag-TiO2
achieved
85%
methylene
blue
removal
from
water
under
simulated
solar
irradiation,
showing
an
8%
improvement
efficiency
over
TiO2.
These
results
demonstrate
potential
efficient
cost-effective
solution
remove
irradiation.
