ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(22), С. 26097 - 26110
Опубликована: Ноя. 14, 2024
Clay
minerals
and
their
derivatives
are
valued
for
unique,
low-dimensional
nanostructures.
It
is
imperative
to
explore
the
characteristics
of
nanoclay-based
matrix
materials
green
synthesis
functional
composites.
This
study
reveals
defect-induced
semiconductor-like
optical
properties
kaolinite
clay-derived
silica
nanosheets
(SiNSs)
employs
SiNSs
as
a
sustainable
support
photoinduced
reducing
agent
photochemical
supported
metal
nanoparticles
(NPs).
Results
show
that
feature
defects
UV
absorption
ability,
band
gap
2.99
eV,
higher
photogenerated
carrier
separation
efficiency
than
fumed
nanosilica.
Consequently,
photoexcited
electrons
under
irradiation
efficiently
reduce
Ag/Cu-amine
precursors
produce
SiNS-supported
Ag-only
AgCu-alloy
NPs.
Furthermore,
impact
intensity
on
Ag/Cu
ratio
composition
alloy
NPs
due
metal–support
interaction
alloying
effect
clarified.
The
optimal
AgCu/SiNS-5
composite
consisting
Ag0.35Cu0.65
(∼12
nm)
exhibits
superior
catalytic
activity
p-nitrophenol
reduction
within
40
s
with
turnover
frequency
4.36
min–1
owing
high
adsorption
reactivity
interfacial
active
sites,
multiple
electron
transport
pathways
enabled
by
Ag0/Cu+/Cu0/(AgCu)0.
work
indicates
great
potential
SiNS's
in
catalysts,
emphasizing
key
roles
catalysis.
ChemEngineering,
Год журнала:
2025,
Номер
9(1), С. 10 - 10
Опубликована: Янв. 20, 2025
Tetrafluoromethane
(CF4)
is
the
simplest
perfluorocarbon,
a
class
of
compounds
with
very
high
greenhouse
gas
potential.
Catalytic
hydrolysis
offers
an
opportunity
to
convert
these
manageable
CO2
and
HF.
Recently
published
data
showed
effectiveness
Ga-doping
overcome
fluorine
poisoning
various
Al2O3
catalysts
at
relatively
modest
temperatures.
This
prior
work
offered
partial
catalytic
mechanism
together
kinetic
conversion
data.
The
current
paper
completes
mechanism,
then
analyzes
it
using
Langmuir–Hinshelwood
algorithm
for
both
initial
CF4
conversion,
catalyst
site
regeneration.
resulting
derived
rate
expression,
activity
coefficient
are
used
in
flow
reactor
configurations
simulate
short
exposure
time
runs
little
loss
activity,
as
well
longer
severe
loss.
reasonable
agreement
laboratory
suggests
that
expressions
can
be
larger-scale
practical
design.
Journal of Instrumentation,
Год журнала:
2024,
Номер
19(06), С. P06022 - P06022
Опубликована: Июнь 1, 2024
Abstract
Nanomaterial
characterization
using
microwaves
is
needed
in
nanoscale
semiconductor
devices,
microwave
imaging,
EM
shielding,
and
wireless
communication.
Many
nanomaterials
are
used
as
metallic
or
dielectric
layers
these
applications.
In
this
paper,
we
report
the
of
planar
Microwave
Slot
Resonator
(MSR)
which
was
designed
studied
3D
simulation
tool.
The
response
MSR
parameterized
offers
a
platform
to
calculate
relative
permittivity
(
ε
r
)
conductivity
(σ)
from
measured
high
frequency
nanomaterial
loaded
MSR.
With
simplified
method,
accurate
faster
results
be
design,
calculation
numerical
analysis
based
electronic/optoelectronic
devices
sensor/shielding
