Harnessing the Power of S/N Doped NiO Nanoparticles: Bandgap Tuning for Superior Photocatalytic and Antibacterial Performance
Abstract
Nickel
oxide
(NiO)
has
gained
attention
as
a
promising
photocatalyst,
thanks
to
its
high
efficiency,
photochemical
stability,
cost-effectiveness,
and
eco-friendly
nature.
However,
wide
band
gap
rapid
electron-hole
recombination
hinder
practical
application
under
visible
light.
This
study
synthesized
pure
NiO
nanoparticles
(NiO-NPs)
sulfur/nitrogen
co-doped
(S/N-NiO-NPs)
via
the
co-precipitation
method.
Comprehensive
structural
optical
analyses
using
UV-Vis,
FT-IR,
XRD,
SEM
confirmed
successful
formation
of
desired
materials.
Notably,
doping
with
4%
sulfur
6%
nitrogen
significantly
enhanced
charge
separation,
extended
light
absorption,
narrowed
from
3.75
eV
2.50
eV,
reduced
crystalline
size
20.49
nm
17.89
nm.
Under
optimal
conditions
(pH
10),40
mg
S/N-NiO-NPs
achieved
an
impressive
98.9%
degradation
5
ppm
methylene
blue
dye
within
just
60
min
sunlight
irradiation,
far
outperforming
NiO-NPs.
Additionally,
antibacterial
evaluations
demonstrated
superior
efficacy,
exhibiting
inhibition
zones
of13–17
mm
against
pathogens
such
Bacillus
cereus ,
Escherichia
coli ,
Salmonella
typhi ,
Staphylococcus
aureus ,
compared
5–10
observed
for
These
results
highlight
remarkable
potential
S/N
co-doping
in
transforming
into
highly
efficient,
multifunctional
material
environmental
remediation
biomedical
applications.
Published: April 29, 2025
Language: Английский
