Science & Technology Indonesia,
Journal Year:
2024,
Volume and Issue:
9(3), P. 546 - 555
Published: June 30, 2024
Increasing
bacterial
resistance
to
antibiotics
has
become
a
serious
threat
global
public
health.
In
this
context,
study
aims
evaluate
the
antimicrobial
activity
of
titanium
dioxide
nanoparticles
(TiO2
NPS)
synthesized
using
sol-gel
method.
TiO2
NPS
samples
were
prepared
and
characterized
for
morphology
via
field-emission
scanning
electron
microscopy
(FESEM)
X-ray
diffraction
(XRD)
analysis.
Kirby-Bauer
disc
diffusion
method
was
used
test
against
Gram
positive
bacteria
Staphylococcus
aureus,
negative
Escherichia
coli,
pathogenic
fungus
Aspergillus
penicillioides.
The
results
showed
that
effectively
inhibited
growth
microorganisms,
with
significant
inhibition
zones
especially
fungi.
mechanism
involves
formation
hydroxyl
radicals
superoxide
ions
damage
cell
membrane
microorganisms.
implications
are
development
potential
nanomaterials
biomedical
environmental
applications,
as
well
importance
considering
physical
chemical
properties
in
designing
effective
infection
treatment
strategies.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(19), P. 10519 - 10519
Published: Sept. 29, 2024
There
is
a
growing
interest
in
the
utilization
of
metal
oxide
nanoparticles
as
antimicrobial
agents.
This
review
will
focus
on
titanium
dioxide
(TiO2
NPs),
which
have
been
demonstrated
to
exhibit
high
activity
against
bacteria
and
fungi,
chemical
stability,
low
toxicity
eukaryotic
cells,
therefore
biocompatibility.
Despite
extensive
research
conducted
this
field,
there
currently
no
consensus
how
enhance
efficacy
TiO2
NPs.
The
aim
evaluate
influence
various
factors,
including
particle
size,
shape,
composition,
synthesis
parameters,
well
microbial
type,
antibacterial
NPs
fungi.
Furthermore,
offers
comprehensive
overview
methodologies
employed
characterization
exhibits
weak
dependence
microorganism
species.
A
tendency
towards
increased
observed
with
decreasing
NP
size.
shape
composition
more
pronounced.
most
pronounced
potential
exhibited
by
amorphous
doped
inorganic
compounds.
may
be
specialists
biology,
medicine,
chemistry,
other
related
fields.
Coatings,
Journal Year:
2024,
Volume and Issue:
14(1), P. 92 - 92
Published: Jan. 10, 2024
Photocatalytic
technologies
represent
an
innovative
method
to
reduce
microbial
load
on
surfaces,
even
considering
recent
public
health
emergencies
involving
coronaviruses
and
other
microorganisms,
whose
presence
has
been
detected
surfaces.
In
this
review
paper,
the
antimicrobial
efficacy
of
various
photocatalysts
applied
by
different
coating
methods
surfaces
compared
critically
discussed.
Publications
reviewing
use
photocatalytic
coatings
for
effectiveness
have
examined.
Clear
search
parameters
were
employed
analyze
PubMed,
Scopus,
WOS
databases,
resulting
in
45
papers
published
between
2006
2023
that
met
inclusion
criteria.
The
paper
assessed
types
targeted
objectives.
Based
pooled
data
analysis,
TiO2
exhibited
a
substantial
effect
decreasing
bacteria
strains,
both
Gram-positive
-negative
(99.4%).
Although
diversity
these
poses
significant
obstacles
obtaining
comprehensive
final
assessment
their
feasibility
surface
application,
subgroup
analysis
indicated
variations
removal
efficiency
strains
based
(p
=
0.005)
time
exposure
0.05).
provide
promising
approach
combating
spread
microorganisms
Further
“in-field”
investigations
are
necessary
foreseeable
future
explore
optimize
novel
exciting
technology.
Materials,
Journal Year:
2025,
Volume and Issue:
18(4), P. 906 - 906
Published: Feb. 19, 2025
The
increasing
need
for
effective
antiviral
strategies
has
led
to
the
development
of
innovative
surface
coatings
combat
transmission
viruses
via
fomites.
aim
this
review
is
critically
assess
efficacy
in
mitigating
virus
transmission,
particularly
those
activated
by
visible
light.
alarm
created
COVID-19
pandemic,
including
initial
uncertainty
about
mechanisms
its
spread,
attracted
attention
fomites
as
a
possible
source
transmission.
However,
later
research
shown
that
surface-dependent
infection
be
carefully
evaluated
experimentally.
By
briefly
analyzing
virus-surface
interactions
and
their
implications,
highlights
importance
shifting
solutions.
In
particular,
visible-light-activated
use
reactive
oxygen
species
such
singlet
disrupt
viral
components
have
emerged
promising
options.
These
can
allow
obtaining
safe,
continuous,
long-term
active
biocidal
surfaces
suitable
various
applications,
healthcare
environments
public
spaces.
This
indicates
while
significance
fomite
context-dependent,
advances
material
science
provide
actionable
pathways
designing
multifunctional,
coatings.
innovations
align
with
lessons
learned
from
pandemic
pave
way
sustainable,
broad-spectrum
solutions
capable
addressing
future
health
challenges.
The Journal of Physical Chemistry C,
Journal Year:
2025,
Volume and Issue:
129(9), P. 4680 - 4688
Published: Feb. 21, 2025
Inorganic
coatings
(ICs)
on
metal
oxides
and
semiconducting
nanoparticles
are
essential
for
a
broad
range
of
applications.
They
allow
tailoring
the
interface
properties,
increase
stability,
passivate
surface.
Quantitative
characterization
these
ICs
is
often
complicated
relies
involved
surface
methods
such
as
X-ray
photoelectron
spectroscopy
(XPS)
scanning
electron
microscopy
(SEM).
We
present
time-resolved
photoluminescence
(TR-PL)
surface-bound
fluorescent
probe
molecules
versatile
method
semiquantitative
that
can
determine
shell
thicknesses
coverage.
The
coating-dependent
fluorescence
quenching
fluorophores
through
interfacial
transfer.
It
eliminates
need
selective
fluorophore
binding
to
specific
surfaces
enables
rapid
coating
properties
in
situ
large
scales.
approach
demonstrated
Al2O3
TiO2.
However,
be
extended
other
potentially
nanoparticles,
well
core–shell
structures.
requires
calibration
with
reference
samples
synthesized
an
improved
process
controlled
deposition
Al2O3-closed
shells
patches
TiO2
nanoparticle
using
wet
chemical
deposition.
