Antioxidants,
Год журнала:
2023,
Номер
12(6), С. 1298 - 1298
Опубликована: Июнь 18, 2023
While
various
methods
exist
for
synthesizing
silver
nanoparticles
(AgNPs),
green
synthesis
has
emerged
as
a
promising
approach
due
to
its
affordability,
sustainability,
and
suitability
biomedical
purposes.
However,
is
time-consuming,
necessitating
the
development
of
efficient
cost-effective
techniques
minimize
reaction
time.
Consequently,
researchers
have
turned
their
attention
photo-driven
processes.
In
this
study,
we
present
photoinduced
bioreduction
nitrate
(AgNO3)
AgNPs
using
an
aqueous
extract
Ulva
lactuca,
edible
seaweed.
The
phytochemicals
found
in
seaweed
functioned
both
reducing
capping
agents,
while
light
served
catalyst
biosynthesis.
We
explored
effects
different
intensities
wavelengths,
initial
pH
mixture,
exposure
time
on
biosynthesis
AgNPs.
Confirmation
AgNP
formation
was
achieved
through
observation
surface
plasmon
resonance
band
at
428
nm
ultraviolet-visible
(UV-vis)
spectrophotometer.
Fourier
transform
infrared
spectroscopy
(FTIR)
revealed
presence
algae-derived
bound
outer
synthesized
Additionally,
high-resolution
transmission
electron
microscopy
(HRTEM)
atomic
force
(AFM)
images
demonstrated
that
NPs
possessed
nearly
spherical
shape,
ranging
size
from
5
40
nm.
crystalline
nature
confirmed
by
selected
area
diffraction
(SAED)
X-ray
(XRD),
with
Bragg's
pattern
revealing
peaks
2θ
=
38°,
44°,
64°,
77°,
corresponding
planes
111,
200,
220,
311
face-centered
cubic
crystal
lattice
metallic
silver.
Energy-dispersive
(EDX)
results
exhibited
prominent
peak
3
keV,
indicating
Ag
elemental
configuration.
highly
negative
zeta
potential
values
provided
further
confirmation
stability
Moreover,
reduction
kinetics
observed
via
UV-vis
spectrophotometry
superior
photocatalytic
activity
degradation
hazardous
pollutant
dyes,
such
rhodamine
B,
methylene
orange,
Congo
red,
acridine
Coomassie
brilliant
blue
G-250.
our
biosynthesized
hold
great
redox
applications.
Results in Engineering,
Год журнала:
2022,
Номер
16, С. 100678 - 100678
Опубликована: Сен. 30, 2022
One
of
the
popular
cationic
dyes
that
is
environmentally
persistent,
toxic,
carcinogenic
and
mutagenic
methylene
blue
(MB)
dye.
It
commonly
applied
as
synthetic
dye
for
dyeing
fabrics
in
clothing
textile
industries
also
papers
leathers.
Sequel
to
magnitude
industrial
usage,
a
large
volume
containing
wastewater
discharged
into
groundwater
surface
water.
At
doses
more
than
5
mk/kg,
monoamine
oxidate
inhibitory
characteristics
MB
can
induce
fatal
serotonin
toxicity
human,
apart
from
being
threat
fauna
aquatic
ecosystem.
Thus,
it
highly
imperative
eliminate
wastewaters.
A
number
different
removal
strategies
have
been
reported
literature
treating
wastewater.
In
this
state-of-the-art
review,
about
240
review
and/or
research
published
articles
on
methods
decontamination
or
were
chosen
evaluation.
This
synthesis
discussed
various
toxicities
linked
The
assessment
elimination
revealed
chemical
(photochemical
non-photochemical)
could
generate
secondary
pollutants
while
biological
are
characterized
with
sensitivity
enzyme
pH.
These
drawbacks
limit
their
full-scale
applications
adsorption
technology
was
found
offer
merits
over
others.
comprehensively
each
these
techniques
gaps
areas
future
highlighted.
Processes,
Год журнала:
2023,
Номер
11(3), С. 807 - 807
Опубликована: Март 8, 2023
The
use
of
dyes
is
widespread
across
almost
all
industries.
Consequently,
these
are
found
in
various
sources
water
and
food
that
humans,
animals,
plants
consume
directly
or
indirectly.
Most
comprised
complex
aromatic
structures
have
proven
harmful.
Congo
red
dye,
a
azo
dye
based
on
benzidine,
most
commonly
used
dyes;
its
metabolites
(benzidine
analogs)
can
be
toxic,
but
itself
not
always
present
review
summarizes
the
toxicity
towards
different
living
forms.
Herein,
primary
emphasis
has
been
given
to
mutagenic,
teratogenic,
carcinogenic
consequences
metabolites.
mechanisms
dyes’
carcinogenicity
also
discussed.
This
will
undoubtedly
beneficial
for
researchers
understand
harmful
effects
genotoxic,
factors.
Green Chemical Engineering,
Год журнала:
2023,
Номер
5(4), С. 440 - 460
Опубликована: Дек. 30, 2023
Organic
dye
pollutants
present
in
wastewater
pose
a
significant
global
challenge.
Among
pollutants,
the
synthetic
Rhodamine
B
(RB)
stands
out
due
to
its
non-biodegradable
nature
and
associated
neurotoxic,
carcinogenic,
respiratory
irritant
properties.
Extensive
research
has
been
conducted
on
efficacy
of
adsorption
photodegradation
techniques
for
removal
RB
from
wastewater.
While
advanced
oxidation
processes
(AOPs)
have
gained
considerable
attention
their
effectiveness
recent
years,
underlying
behaviors
mechanisms
these
technologies
remain
incompletely
understood.
Therefore,
comprehensive
summary
progress
this
domain
is
imperative
clarify
basics
up-to-date
achievements.
This
review
provides
an
in-depth
exploration
fundamentals,
advancements,
future
trajectories
treatment
technologies,
mainly
encompassing
photodegradation.
work
starts
with
general
introduction
outlining
sources,
toxicity,
diverse
applicable
strategies.
Subsequently,
it
thoroughly
examines
crucial
within
non-photochemical,
photochemical,
such
as
UV
light-assisted
AOP,
catalyst-assisted
ozonation,
Fenton
systems,
electrochemical
technology.
The
primary
objective
furnish
broad
overview
techniques,
elucidating
effectiveness,
limitations,
applicability.
Following
this,
encapsulates
state-of-the-art
computational
simulations
pertaining
interactions
clays
other
adsorbents.
Lastly,
delves
into
column
dye,
elucidates
various
influencing
factors,
including
bed
height,
feed
concentration,
pollutant
feeding
or
flow
rate,
regeneration.
panoramic
aims
provide
valuable
insights
suitable
gaps,
applicability
containing
dye.
Zeitschrift für Physikalische Chemie,
Год журнала:
2024,
Номер
238(9), С. 1599 - 1622
Опубликована: Фев. 17, 2024
Abstract
This
study
addresses
the
pressing
issue
of
environmental
pollution
caused
by
antibiotics
and
synthetic
dyes
in
aquatic
ecosystems,
presenting
a
novel
approach
for
their
efficient
photocatalytic
degradation.
Zinc
oxide
(ZnO)-based
nanoscale
photocatalysts,
including
ZnO
nanoparticles
(NPs)
ZnO/Ag
nanocomposite
heterostructure
(NCH),
were
synthesized
through
an
innovative
eco-friendly
method
utilizing
extract
derived
from
discarded
lemon
peels
as
biogenic
reducing
agent.
The
materials
extensively
characterized
UV
spectrophotometry,
X-ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
Fourier
transform
infrared
spectroscopy
(FTIR).
results
confirmed
different
morphologies
NPs
NCH,
with
average
sizes
20
nm
42
nm,
respectively.
Notably,
NCH
exhibited
optical
bandgap
energies
3.2
eV
2.85
eV,
respectively,
signifying
potential
photocatalysts.
Under
natural
sunlight
irradiation,
these
demonstrated
exceptional
activity,
achieving
remarkable
98.8
%
degradation
rate
metronidazole
90
ciprofloxacin
just
12
min.
Furthermore,
effectively
removed
84
Toluidine
Blue
77
Congo
red
after
120
min,
while
enhanced
rates
to
approximately
90.5
86
Red.
research
highlights
significant
physicochemical
properties
synthesis
methods
employed,
positioning
sustainable
nanomaterials
promising
solutions
mitigating
effectively.
