Nanomaterials,
Год журнала:
2024,
Номер
14(24), С. 2048 - 2048
Опубликована: Дек. 21, 2024
Photocatalytic
technology
holds
significant
promise
for
sustainable
development
and
environmental
protection
due
to
its
ability
utilize
renewable
energy
sources
degrade
pollutants
efficiently.
In
this
study,
BiOI
nanosheets
(NSs)
were
synthesized
using
a
simple
water
bath
method
with
varying
amounts
of
mannitol
reaction
temperatures
investigate
their
structural,
morphological,
photoelectronic,
photocatalytic
properties.
Notably,
the
introduction
played
critical
role
in
inducing
transition
from
an
n-type
p-type
semiconductor,
as
evidenced
by
Mott–Schottky
(M-S)
band
structure
analyses.
This
transformation
enhanced
density
holes
(h+)
primary
charge
carriers
resulted
most
negative
conduction
(CB)
position
(−0.822
V
vs.
NHE),
which
facilitated
generation
superoxide
radicals
(·O2−)
activity.
Among
samples,
BiOI-0.25-60
NSs
(synthesized
0.25
g
at
60
°C)
exhibited
highest
performance,
characterized
largest
specific
surface
area
(24.46
m2/g),
optimal
gap
(2.28
eV),
efficient
photogenerated
separation.
experiments
demonstrated
that
achieved
superior
methylene
blue
(MB)
degradation
efficiency
96.5%
under
simulated
sunlight,
1.14
times
higher
than
BiOI-0-70
NSs.
Additionally,
effectively
degraded
tetracycline
(TC),
2,4-dichlorophenol
(2,4-D),
rhodamine
B
(Rh
B).
Key
factors
such
photocatalyst
concentration,
MB
solution
pH
analyzed,
excellent
recyclability,
retaining
over
94.3%
activity
after
three
cycles.
Scavenger
tests
further
identified
·O2−
h+
dominant
active
species
driving
process.
pivotal
modulating
semiconductor
characteristics
nanomaterials
is
underscored,
particularly
promoting
enhancing
efficiency.
These
findings
provide
valuable
strategy
designing
high-performance
photocatalysts
remediation
applications.
International Journal of Environmental & Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 43
Опубликована: Ноя. 6, 2024
The
synthesis
of
zinc
oxide
(ZnO)
nanoparticles
using
Pueraria
montana
(kudzu)
plant
extracts
highlights
advancements
in
green
nanotechnology.
This
study
explores
the
use
roots,
rich
phytochemicals
such
as
phenols,
terpenoids
and
flavonoids,
which
serve
natural
reducing
stabilizing
agents
for
nanoparticle
synthesis.
eco-friendly
production
surface
modification
ZnO
were
achieved
these
extracts,
enhancing
their
photocatalytic
performance
with
trisodium
pyrophosphate
(TSPP).Characterization
techniques,
including
XRD,
TEM,
FE-SEM,
confirmed
nanoparticles'
crystalline
structure,
a
BET
area
14.01
m²/g
type
II
adsorption
isotherm.
synthesized
exhibited
exceptional
dye
degradation
capabilities,
achieving
99.9%
removal
malachite
(MG)
97.78%
aniline
blue
(AB).
Kinetic
analysis
revealed
steady-state
rate
constant
(k)
2
×
10⁻⁴
min⁻¹
MG
where
response
constant(k)
AB
modified
nanostructures
was
3.0
10−3
min−1
allowing
near-total
within
600
minutes
350
min
.
Adsorption
studies
well
described
by
Langmuir
Freundlich
isotherms,
indicating
maximum
capacities
59.7
mg/g
61.2
AB.
Surface
TSPP
improved
charge
carrier
separation
enhanced
generation
reactive
oxygen
species
under
UV
exposure,
further
increasing
efficiency.Statistical
indicated
high
reproducibility,
close
mean
values
99.125
97.3125
AB,
supported
small
standard
deviations.
findings
affirm
potential
synthesizing
efficient
photocatalysts,
providing
sustainable
cost-effective
approach
water
treatment
applications.
Overall,
this
research
underscores
effectiveness
plant-based
materials
advancing
nanotechnology
solutions.
Nanomaterials,
Год журнала:
2024,
Номер
14(24), С. 2048 - 2048
Опубликована: Дек. 21, 2024
Photocatalytic
technology
holds
significant
promise
for
sustainable
development
and
environmental
protection
due
to
its
ability
utilize
renewable
energy
sources
degrade
pollutants
efficiently.
In
this
study,
BiOI
nanosheets
(NSs)
were
synthesized
using
a
simple
water
bath
method
with
varying
amounts
of
mannitol
reaction
temperatures
investigate
their
structural,
morphological,
photoelectronic,
photocatalytic
properties.
Notably,
the
introduction
played
critical
role
in
inducing
transition
from
an
n-type
p-type
semiconductor,
as
evidenced
by
Mott–Schottky
(M-S)
band
structure
analyses.
This
transformation
enhanced
density
holes
(h+)
primary
charge
carriers
resulted
most
negative
conduction
(CB)
position
(−0.822
V
vs.
NHE),
which
facilitated
generation
superoxide
radicals
(·O2−)
activity.
Among
samples,
BiOI-0.25-60
NSs
(synthesized
0.25
g
at
60
°C)
exhibited
highest
performance,
characterized
largest
specific
surface
area
(24.46
m2/g),
optimal
gap
(2.28
eV),
efficient
photogenerated
separation.
experiments
demonstrated
that
achieved
superior
methylene
blue
(MB)
degradation
efficiency
96.5%
under
simulated
sunlight,
1.14
times
higher
than
BiOI-0-70
NSs.
Additionally,
effectively
degraded
tetracycline
(TC),
2,4-dichlorophenol
(2,4-D),
rhodamine
B
(Rh
B).
Key
factors
such
photocatalyst
concentration,
MB
solution
pH
analyzed,
excellent
recyclability,
retaining
over
94.3%
activity
after
three
cycles.
Scavenger
tests
further
identified
·O2−
h+
dominant
active
species
driving
process.
pivotal
modulating
semiconductor
characteristics
nanomaterials
is
underscored,
particularly
promoting
enhancing
efficiency.
These
findings
provide
valuable
strategy
designing
high-performance
photocatalysts
remediation
applications.
