The
release
of
heavy
metal
ions,
especially
hexavalent
chromium
[Cr(VI)],
from
industrial
processes
poses
significant
health
and
environmental
risks.
Cr(VI)
does
not
readily
degrade
but
can
be
reduced
to
the
less
toxic
trivalent
form
[Cr(III)]
that
exhibits
lower
adsorption,
making
it
easier
manage
remove
systems.
This
paper
proposes
a
single-step
solvothermal
method
synthesize
fluorescent
multiatom-doped
(N,
K,
Cl,
Mg,
Ca)
carbon
dots
(MACDs)
Kalanchoe
pinnata
leaves
(carbon
precursor)
ethanol
(solvent).
These
MACDs
serve
as
effective
photocatalysts
for
reduction
under
one
sun
illumination
(AM
1.5
G
conditions).
reaction
achieved
91%
removal
20
ppm
deionized
water
solution
in
420
min
complete
(100%)
an
acidic
with
same
initial
concentration
120
min.
demonstrated
excellent
photocatalytic
performance
across
tap,
river,
lake
water.
biomass-derived
demonstrate
strong
potential
Cr-contaminated
remediation.
Journal of Physics Conference Series,
Год журнала:
2025,
Номер
2980(1), С. 012025 - 012025
Опубликована: Апрель 1, 2025
Abstract
TiO
2
/Fe
3
O
4
/DMSO
ferrofluid
has
been
successfully
synthesized
as
an
antimicrobial
agent.
The
XRD
data
analysis
presented
the
presence
of
cubic
inverse
spinel
and
tetragonal
structures
for
Fe
phases.
results
SEM
showed
that
nanocomposite
a
filler
was
composed
spherical
particles
with
particle
size
37.3
nm.
confirmed
by
appearance
Fe-O
bonds
on
tetrahedral
octahedral
sites
at
582
cm
−1
443
.
Meanwhile,
C=O
bond
detected
1745
1658
stretching
vibration
Ti-O-Ti
appeared
702
Furthermore,
S=O
DMSO
surfactant
1042
952
dispersing
liquid
C-H
vibrations
3007,
2920,
1461
had
superparamagnetic
character
saturation
magnetization
value
3.3
emu/g.
Interestingly,
performance
against
Candida
albicans,
Staphylococcus
aureus
bacteria,
Bacillus
subtilis
,
Escherichia
coli
inhibition
zone
values
8.95,
10.05,
10.17,
7.72
mm,
respectively.
Pharmaceutics,
Год журнала:
2024,
Номер
16(7), С. 927 - 927
Опубликована: Июль 11, 2024
Most
clinical
isolates
of
both
Staphylococcus
aureus
and
epidermidis
show
the
capacity
to
adhere
abiotic
surfaces
develop
biofilms
resulting
in
a
contribution
chronic
human
skin
infections.
Antibiotic
resistance
poor
biofilm
penetration
are
main
causes
ineffective
therapeutic
treatment
killing
bacteria
within
biofilms.
A
possible
strategy
could
be
represented
by
drug
delivery
systems,
such
as
nanoemulsions
(composed
bioactive
oil,
surfactant
water
phase),
which
useful
for
enhancing
permeation
loaded
inside
its
activity.
Phytochemical
characterization
Pistacia
lentiscus
oil
(LO)
direct
infusion
Fourier-transform
ion
cyclotron
resonance
mass
spectrometry
(FT-ICR
MS)
allowed
identification
compounds
with
antimicrobial
properties,
including
fatty
acids
phenolic
compounds.
Several
monoterpenes
sesquiterpenes
have
been
also
detected
confirmed
gas
chromatography–mass
spectrometric
(GC-MS)
analysis,
together
providing
complete
metabolomic
profiling
LO.
In
present
study,
nanoemulsion
composed
LO
has
employed
improving
Levofloxacin
solubility.
deep
physical–chemical
hydrodynamic
diameter,
ζ-potential,
morphology,
entrapment
efficiency,
stability
release
studies
was
performed.
Additionally,
antimicrobial/antibiofilm
activity
these
preparations
evaluated
against
reference
spp.
strains.
comparison
free-form
antibiotic,
NE
nanocarriers
exhibited
enhanced
sessile
forms
Talanta Open,
Год журнала:
2023,
Номер
8, С. 100259 - 100259
Опубликована: Окт. 20, 2023
Carbon
dots
(CDs)
derived
from
biological
entities
significantly
play
a
major
part
in
environmental
and
biomedical
applications,
comprising
electrocatalytic
oxidations,
antibiotics
detection,
biosensing,
bioimaging.
In
the
present
work,
facile
green
synthesis
of
blue-emitting
CDs
has
been
done
using
one-step
hydrothermal
treatment
pulp
extract
Ziziphus
mauritiana,
acting
as
natural
source
carbon
for
optical
determination
ciprofloxacin
(CIP)
antibiotics.
The
process
is
easy,
safe
environment,
doesn't
require
any
specialized
equipment
or
chemicals.
structural
characteristics
synthesized
are
XRD,
FTIR,
UV–visible
spectroscopies,
SEM-EDX,
PL,
TEM.
were
found
to
have
quasi-spherical
shape
with
an
average
size
2.54
nm.
Nitrogen
(1.2wt.%),
oxygen
(41.8wt.%),
(40.7wt.%)
main
component
CDs,
observed
by
EDX.
These
showed
blue
emission
under
UV
light,
excitation-dependent
emission,
wide
excitation-emission
spectra.
prepared
used
selectively
detect
CIP
exhibit
high
quantum
yield
30%
at
excitation
wavelength
340
After
optimal
parameters,
sensor
gave
linear
detection
range
10-100
µM
along
limit
0.56
µM.
Moreover,
practical
applicability
developed
was
confirmed
real
milk
samples
test
consistency
accuracy
sensor.
conclusion,
proposed
method
green,
rapid,
highly
sensitive,
selective
samples,
demonstrating
potential
application
food
detection.
