Environmental Quality Management,
Journal Year:
2025,
Volume and Issue:
34(3)
Published: Feb. 12, 2025
ABSTRACT
This
study
scrutinizes
the
photodegradation
efficacy
of
methylene
blue
(MB)
and
selected
phenolic
compounds,
emphasizing
variables
such
as
pH,
catalyst
dosage,
initial
pollutant
concentration.
Employing
a
GO/TiO₂/SiO₂
composite
(NC‐II)
composed
50:50%
TiO₂
SiO₂,
research
identifies
NC‐II
optimal
catalyst,
achieving
up
to
100%
degradation
MB
under
ideal
conditions
(0.5
ppm
concentration,
pH
10).
For
degradation,
maximal
rates
were
recorded
alkaline
(pH
8–10),
with
reaching
84.6%
at
10,
surpassing
46.5%
observed
for
NC‐I
37.7%
NC‐III
same
level.
Results
also
indicate
that
an
increase
in
dosage
0.3
g
enhances
rates,
63.7%
this
contrast
17.8%
53.1%
NC‐III.
In
case
efficiencies
varied
between
55%
86%,
demonstrating
highest
capability,
86%
Bisphenol
A
dosage.
The
4‐chlorophenol
phenol
was
more
pronounced
neutral
(5–6),
zero‐order
kinetics
producing
superior
regression
coefficients
(
R
2
=
0.91–0.99)
compared
pseudo‐first‐order
models.
Moreover,
maintained
over
80%
efficiency
across
five
reusability
cycles,
underscoring
its
durability
minimal
decline
performance.
substantiates
TiO₂:SiO₂
composites
cost‐effective,
high‐performance
catalysts
suitable
diverse
environmental
conditions,
where
adjustments
can
further
refine
different
types.
Pharmaceuticals,
Journal Year:
2023,
Volume and Issue:
16(10), P. 1410 - 1410
Published: Oct. 4, 2023
Metal
nanoparticles
(NPs)
have
garnered
considerable
attention,
due
to
their
unique
physicochemical
properties,
that
render
them
promising
candidates
for
various
applications
in
medicine
and
industry.
This
article
offers
a
comprehensive
overview
of
the
most
recent
advancements
manufacturing,
characterization,
biomedical
utilization
metal
NPs,
with
primary
focus
on
silver
gold
NPs.
Their
potential
as
effective
anticancer,
anti-inflammatory,
antimicrobial
agents,
drug
delivery
systems,
imaging
agents
diagnosis
treatment
variety
disorders
is
reviewed.
Moreover,
translation
therapeutic
settings,
issue
inclusion
clinical
trials,
are
assessed
light
over
30
investigations
concentrate
administering
either
or
NPs
conditions
ranging
from
nosocomial
infections
different
types
cancers.
paper
aims
not
only
examine
biocompatibility
nanomaterials
but
also
emphasize
challenges
may
limit
safe
integration
into
healthcare
practices.
More
than
100
nanomedicines
currently
market,
which
justifies
ongoing
study
use
medicine.
Overall,
present
review
highlight
innovative
therapeutics
field
biomedicine,
citing
some
relevant
current
applications.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 27, 2024
Abstract
Water
pollution,
arising
from
the
presence
of
toxic
dyes
and
chemicals,
is
a
global
challenge,
urging
need
for
eco-friendly
solutions
in
water
decontamination.
This
study
focused
on
synthesis
copper
oxide
nanoparticles
(CuO
NPs),
zinc
(ZnO
bimetallic
CuO-ZnO
nanocomposite
(CZ
NC)
through
an
environmentally
friendly
method
employing
Tragia
involucrata
L.
leaf
extract.
Comprehensive
analysis
structural
optical
properties
involved
using
various
analytical
techniques
such
as
XRD,
FT-IR,
XPS,
UV-DRS,
PL,
FE-SEM,
EDAX,
TEM,
SAED,
zeta
potential,
TGA,
BET.
In
comparison
to
pristine
CuO
ZnO
NPs,
CZ-NC
demonstrated
notably
enhanced
photocatalytic
activity
degradation
Rhodamine
B
dye
(RhB).
The
optimum
conditions
RhB
were
found
be
pH
9
catalyst
dosage
1
mg/mL
concentration
10
ppm.
Under
these
conditions,
high
efficiencies
78%,
83%,
96.1%
respectively
over
105
min.
Through
LC-HRMS,
identification
products
offered
valuable
insights
into
pathway
degradation.
Furthermore,
toxicity
intermediates,
conducted
ECOSAR
software,
indicated
formation
non-toxic
by-products
(ChV/LC
50
/EC
>
100)
after
completion
reaction.
recycled
catalysts
exhibited
sustained
stability
up
4
cycles,
with
only
minor
decrease
6.8%.
confirms
their
catalytic
efficacy
purifying
polluted
water.
research
significantly
contributes
progress
nanocomposites,
enhancing
realm
environmental
remediation.
Deleted Journal,
Journal Year:
2024,
Volume and Issue:
6(3)
Published: Feb. 27, 2024
Abstract
Increasing
concern
about
environmental
pollution
attracts
researchers
to
develop
eco-friendly,
low-cost,
and
sustainable
approaches
for
green
biosynthesis
of
nanoparticles
overcome
pollutants.
This
study
focuses
on
the
synthesis
ceria
NPs
using
Spirulina
platensis
extract
as
a
stabilizing
reducing
agent.
Characterization
measurements,
such
optical
properties,
X-ray
diffraction,
SEM,
TEM,
FT-IR
spectroscopy,
confirmed
successful
crystalline
stable
with
well-defined
morphological
features.
The
calculated
bandgaps
energy
pure
ceria,
CeO
2
@Sp
2:1,
1:1
were
3.3,
3.15,
2.94
eV,
respectively.
as-synthesized
showed
an
excellent
degradation
efficacy
MB
dye
under
UV
irradiation.
Furthermore,
high
photodegradation
efficiency
(R%
=
86.2
88.8%)
than
76.4%)
at
certain
specific
conditions
(pH
11,
contact
time
90
min,
catalyst
dose
0.3
g/L
initial
concentration
100
mg/L).
isothermal
constants
that
is
well-fitted
Freundlich
isotherm
model
(R
>
0.99)
better
Langmuir
<
0.8).
kinetics
models
revealed
rapid
rate
dye,
which
follows
pseudo-second-order
C
e
values
ranging
from
83.33
89.29
mg/g,
R
0.99.
These
results
indicated
potential
applicability
promising
avenue
developing
advanced
wastewater
treatment
applications.
