Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(24), P. 2048 - 2048
Published: Dec. 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.
