Scientific Reports,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Sept. 13, 2022
Abstract
In
this
work,
Ag–ZnO
nanocomposites
were
prepared
by
a
green
synthesis
route
using
aqueous
leaf
extract
of
Tetradenia
riperia
and
investigated
for
antibacterial
activity
against
Escherichia
coli
Staphylococcus
aureus.
To
optimize
the
Ag–ZnO,
effects
precursor
concentrations,
pH,
temperatures
studied.
The
characterized
XRD,
ATR-FTIR,
FESEM,
TEM.
Results
show
that
concentration
8%
Ag,
temperature
80
°C,
pH
7–8
optimal
nanocomposites.
XRD
analysis
showed
decrease
in
particle
size
from
23.6
to
14.8
nm
with
an
increase
Ag
which
was
further
supported
FESEM
analysis.
TEM
image
provides
more
information
on
coexistence
ZnO
where
average
determined.
ATR-FTIR
confirmed
presence
phenolic
compounds,
work
as
reducing
stabilizing
agents.
antimicrobial
results
nanocomposite
demonstrated
higher
potency
E.
than
S.
Therefore,
is
viable
be
used
various
applications,
including
water
disinfection.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 14, 2025
A
dual
S-scheme
nanocellulose-based
SnWO4/Cu2O/Ag2WO4
(NC-SCA)
heterojunction
photocatalyst
was
synthesized
via
ultrasonication
followed
by
a
hydrothermal
method
for
the
efficient
photodegradation
of
amoxicillin
(AMX).
Under
UV-vis
light
irradiation,
NC-SCA
exhibited
an
impressive
97.40%
AMX
degradation
within
30
min,
attributed
to
its
improved
optical
absorption
and
superior
charge
migration.
The
characterization
techniques,
including
XRD,
FTIR,
PL,
spectroscopy,
confirmed
successful
integration
nanocellulose
with
SnWO4/Cu2O/Ag2WO4.
XPS
ESR
analyses
provided
insights
into
migration
mechanism
heterojunction.
Further,
trapping
experiments
identified
hydroxyl
(•OH)
superoxide
radicals
as
primary
reactive
species.
displayed
specific
surface
area
115.9
m2/g,
offering
large
active
photodegradation.
Operational
parameters
such
dosage,
pH,
concentration
were
systematically
optimized.
high
stability,
retaining
around
85%
efficiency
after
seven
cycles.
This
study
presents
innovative
strategy
designing
high-performance
photocatalysts
addressing
limitations
conventional
materials.
Frontiers in Chemistry,
Journal Year:
2022,
Volume and Issue:
10
Published: Sept. 2, 2022
Nanotechnology
is
a
fast-expanding
area
with
wide
range
of
applications
in
science,
engineering,
health,
pharmacy,
and
other
fields.
Among
many
techniques
that
are
employed
toward
the
production
nanoparticles,
synthesis
using
green
technologies
simplest
environment
friendly.
Nanoparticles
produced
from
plant
extracts
have
become
very
popular
subject
study
recent
decades
due
to
their
diverse
advantages
such
as
low-cost
synthesis,
product
stability,
ecofriendly
protocols.
These
merits
prompted
development
nanoparticles
variety
sources,
including
bacteria,
fungi,
algae,
proteins,
enzymes,
etc.,
allowing
for
large-scale
minimal
contamination.
However,
obtained
phytochemicals
exhibit
greater
reduction
stabilization
hence
proven
diversity
properties,
like
catalyst/photocatalyst,
magnetic,
antibacterial,
cytotoxicity,
circulating
tumor
deoxy
ribo
nucleic
acid
(CT-DNA)
binding,
gas
sensing,
etc.
In
current
scenario,
can
also
play
critical
role
cleaning
wastewater
making
it
viable
operations.
Nano-sized
photocatalysts
great
scope
removal
large
pollutants
organic
dyes,
heavy
metals,
pesticides
an
eco-friendly
sustainable
manner
industrial
effluents.
Thus,
this
review
article,
we
discuss
several
metal
extracts,
well
characterization
via
UV–vis
(ultraviolet–visible),
XRD
(X-ray
diffraction),
SEM
(scanning
electron
microscopy),
TEM
(transmission
FTIR
(Fourier
transform
infrared
spectroscopy),
catalytic
activity
on
various
hazardous
systems.
Scientific Reports,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Sept. 13, 2022
Abstract
In
this
work,
Ag–ZnO
nanocomposites
were
prepared
by
a
green
synthesis
route
using
aqueous
leaf
extract
of
Tetradenia
riperia
and
investigated
for
antibacterial
activity
against
Escherichia
coli
Staphylococcus
aureus.
To
optimize
the
Ag–ZnO,
effects
precursor
concentrations,
pH,
temperatures
studied.
The
characterized
XRD,
ATR-FTIR,
FESEM,
TEM.
Results
show
that
concentration
8%
Ag,
temperature
80
°C,
pH
7–8
optimal
nanocomposites.
XRD
analysis
showed
decrease
in
particle
size
from
23.6
to
14.8
nm
with
an
increase
Ag
which
was
further
supported
FESEM
analysis.
TEM
image
provides
more
information
on
coexistence
ZnO
where
average
determined.
ATR-FTIR
confirmed
presence
phenolic
compounds,
work
as
reducing
stabilizing
agents.
antimicrobial
results
nanocomposite
demonstrated
higher
potency
E.
than
S.
Therefore,
is
viable
be
used
various
applications,
including
water
disinfection.
