NANOCOM ...,
Год журнала:
2023,
Номер
2023, С. 0 - 0
Опубликована: Янв. 1, 2023
Plasmonic
nanoantennas
represent
advanced
structures
that
allow
sub-diffraction
manipulation
with
light
energy
and
its
simultaneous
focus
below
the
diffraction
limit.Gigantic
focusing
of
in
desired
targeted
place
allows
for
realization
several
phenomena,
such
as
plasmon-induced
charge
transfer
excitation/injection
so-called
hot
electrons.In
turn,
phenomena
have
found
a
range
applications
fields
medicine,
sensorics,
photovoltaics,
chemical
transformations
triggering.The
main
obstacle
to
greater
use
plasmon-based
is
their
complex
preparation
route
resulting
lack
'scalability'
structure.In
this
work,
we
propose
simple
effective
method
plasmonic
nanoantennas,
which
metal-insulator-metal
(MIM)
system
used.In
particular,
gold
grating/polystyrene/platinum
heterolayer
structure
was
created.In
our
design,
grating
ensures
excitation
surface
plasmon,
polystyrene
acts
dielectric
spacer
between
metals,
platinum
layer
responsible
catalytic
function.The
created
subsequently
used
water
splitting
half
reaction
(hydrogen
evolution
-HER),
performed
photoelectrochemical
regime.The
also
optimized
from
theoretical
experimental
points
view
reach
maximum
efficiency
terms
hydrogen
production.After
optimization
parameters,
observed
doubled
increase
HER
under
illumination
light,
corresponded
plasmon
resonance
absorption
bands.The
proposed
nanoantenna
design
favoured
by
simplicity
target
area
-the
production
green
utilization
(potentially,
sunlight)
energy.
Catalysts,
Год журнала:
2023,
Номер
13(7), С. 1102 - 1102
Опубликована: Июль 14, 2023
Semiconductor-based
photocatalytic
reactions
are
a
practical
class
of
advanced
oxidation
processes
(AOPs)
to
address
energy
scarcity
and
environmental
pollution.
By
utilizing
solar
as
clean,
abundant,
renewable
source,
this
process
offers
numerous
advantages,
including
high
efficiency,
eco-friendliness,
low
cost.
In
review,
we
present
several
methods
construct
various
photocatalyst
systems
with
excellent
visible
light
absorption
efficient
charge
carrier
separation
ability
through
the
optimization
materials
design
reaction
conditions.
Then
it
introduces
fundamentals
photocatalysis
in
both
clean
generation
remediation.
other
parts,
introduce
approaches
enhance
activity
by
applying
different
strategies,
semiconductor
structure
modification
(e.g.,
morphology
regulation,
co-catalysts
decoration,
doping,
defect
engineering,
surface
sensitization,
heterojunction
construction)
tuning
optimizing
conditions
(such
concentration,
initial
contaminant
pH,
temperature,
intensity,
charge-carrier
scavengers).
Then,
comparative
study
on
performance
recently
examined
photocatalysts
applied
production
remediation
will
be
discussed.
To
realize
these
goals,
H2
via
water
splitting,
CO2
reduction
value-added
products,
dye,
drug
photodegradation
lessen
toxic
chemicals,
presented.
Subsequently,
report
dual-functional
for
simultaneous
pollutant
reactions.
brief
discussion
about
industrial
economical
applications
is
described.
The
follows
introducing
application
artificial
intelligence
machine
learning
selection
an
innovative
issues.
Finally,
summary
future
research
directions
toward
developing
significantly
improved
efficiency
stability
provided.
Analytical Chemistry,
Год журнала:
2024,
Номер
96(16), С. 6112 - 6121
Опубликована: Март 30, 2024
Surface-enhanced
Raman
scattering
(SERS)
is
a
powerful
analytical
technique
for
chemical
identification,
but
it
remains
great
challenge
to
realize
the
large-scale
and
well-controlled
fabrication
of
sensitive
repeatable
SERS
substrates.
Here,
we
report
facile
strategy
fabricate
centimeter-sized
periodic
Au
nanograting
(Au-NG)
decorated
with
well-arranged
Ag
nanoparticles
(Ag-NPs)
(denoted
as
Ag-NPs@Au-NG)
three-dimensional
(3D)
flexible
hybrid
substrate
high
sensitivity
good
reproducibility.
The
Au-NG
patterns
ridges
grooves
are
fabricated
through
nanoimprint
lithography
by
employing
low-cost
digital
versatile
disc
(DVD)
master
mold,
Ag-NPs
assembled
interface
self-assembly
method
without
any
coupling
agents.
Multiple
electromagnetic
field
effects
created
at
nanogaps
between
patterns,
leading
high-density
uniform
hot
spots
throughout
substrate.
As
result,
Ag-NPs@Au-NG
arrays
demonstrate
an
ultrahigh
low
10
Acta Physico-Chimica Sinica,
Год журнала:
2023,
Номер
0(0), С. 0 - 0
Опубликована: Янв. 1, 2023
Abstract:
Hydrogen
fuel
has
long
been
considered
a
promising
and
practical
alternative
to
conventional
fossil
fuels
for
shaping
the
future
of
our
energy
landscape.
The
electrocatalytic
water-splitting
technique,
sustainable
eco-friendly
technology,
provides
viable
solution
efficiently
abundantly
producing
high-purity
hydrogen
on
large
scale.
However,
applications
this
technology
require
continuous
improvement
in
reaction
kinetics
evolution
(HER)
at
anode
oxygen
(OER)
cathode.
Additionally,
ongoing
optimization
catalyst's
catalytic
activity
structural
stability
is
crucial
implementation
technology.
selection
suitable
catalysts
paramount
importance
water
splitting.
As
result,
two-dimensional
(2D)
nanomaterials
have
become
focal
point
electrolysis
due
their
unique
physicochemical
properties
abundant
active
sites.
atomic
thinness
2D
materials
makes
electronic
structure
easily
adjustable,
allowing
precise
control
performance
through
morphological
modifications,
defect
engineering,
phase
transitions,
cocatalyst
deposition,
element
doping.
complex
system
design
potentially
mutual
interference
various
chemical
components
could
hinder
further
improvements
performance.
Fortunately,
distinctive
characteristics
can
synergize
with
external
physical
fields,
leading
enhanced
distinct
effects.
For
example,
magnetic
electric
light
fields
induce
thermal
effects,
effectively
reducing
charge
transfer
resistance
bubble
coverage
catalyst
surface.
Strain
regulate
d-band
center,
thus
controlling
adsorption
energy.
Moreover,
superposition
multiple
effects
single
field
offer
enormous
potential
enhancing
It
evident
that
regulation
holds
significant
untapped
potential.
Consequently,
roles
mechanisms
assistance
HER
OER
garnered
increasing
attention.
External
such
as
strain,
light,
temperature,
ultrasound
be
applied
synthesis
electrocatalysis.
This
paper
first
summary
research
field-assisted
electrolytic
catalysts.
then
classifies
studies
based
different
mechanisms.
Finally,
it
outlines
key
challenges
prospects
rapidly
evolving
field.
ACS Catalysis,
Год журнала:
2023,
Номер
13(16), С. 10916 - 10926
Опубликована: Авг. 3, 2023
Ammonia
is
one
of
the
most
widely
produced
chemicals
worldwide,
which
consumed
in
fertilizer
industry
and
also
considered
an
interesting
alternative
energy
storage.
However,
common
ammonia
production
energy-demanding
leads
to
high
CO2
emissions.
Thus,
development
methods
based
on
available
raw
materials
(air,
for
example)
renewable
sources
highly
demanding.
In
this
work,
we
demonstrated
utilization
TiB2
nanostructures
sandwiched
between
coupled
plasmonic
(gold
nanoparticles
gold
grating)
photoelectrochemical
(PEC)
nitrogen
reduction
selective
production.
The
plasmon
structure
allows
us
reach
efficient
sunlight
capture
with
a
subdiffraction
concentration
light
space,
where
catalytically
active
flakes
were
placed.
As
result,
PEC
experiments
performed
at
-0.2
V
(vs.
RHE)
simulated
illumination
give
535.2
491.3
μg
h-1
mgcat-1
yields,
respectively,
pure
air
as
source.
addition,
number
control
confirm
key
role
coupling
increasing
yield,
selectivity
production,
durability
proposed
system.
Finally,
have
series
numerical
quantum
mechanical
calculations
evaluate
contribution
activation
surface,
indicating
increase
catalytic
activity
under
plasmon-generated
electric
field.
