Unraveling the Plasmonic Effect of Au in Promoting Photocatalytic H2 Generation and Organic Synthesis
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(46), С. 17026 - 17034
Опубликована: Ноя. 7, 2024
Incorporating
plasmonic
nanostructures
into
photocatalysts
significantly
enhances
catalytic
efficiency
due
to
effects.
In
this
study,
we
successfully
developed
a
heterojunction
between
organic
semiconductor
zinc
porphyrin
(Zn-TCPP)
and
colloidal
gold
(Au)
nanoparticles
connected
via
Au–O
bonds.
The
formation
of
bonds
Zn-TCPP
Au
facilitates
charge
transfer
by
reducing
the
Schottky
barrier
at
interface.
Finite-difference
time-domain
simulations,
in
situ
XPS
measurements,
infrared
thermal
imaging
confirm
that
strong
localized
surface
plasmon
resonance
effect
local
electric
field
photothermal
effect,
promoting
separation
electron–hole
pairs
Zn-TCPP/Au
sample
improving
reaction
kinetics.
optimal
Zn-TCPP/Au-2%
composite
demonstrates
an
impressive
H2
generation
rate
1610
μmol·g–1·h–1,
which
is
2.7
8.6
times
greater
than
TCPP
samples,
respectively.
Additionally,
shows
high
C–N
coupling
benzylamine
imine,
achieving
yield
45.1
mmol·g–1
24
h.
This
study
provides
comprehensive
understanding
how
activity
photocatalysts.
Язык: Английский
Trifunctional Nature of Heteroatom (B, N, S, O)‐Doped Waste Diesel Soot: Turning Pollutants Into Potential Energy Catalysts for HER, OER, and ORR
Carbon Neutralization,
Год журнала:
2025,
Номер
4(2)
Опубликована: Фев. 12, 2025
ABSTRACT
This
study
delves
into
the
innovative
use
of
multiheteroatom‐doped
vehicle
exhaust
soot
as
a
catalyst
for
oxygen
reduction
reactions
(ORR)
and
hydrogen/oxygen
evolution
(OER/HER),
presenting
transformative
approach
in
energy
materials.
The
synergistic
effects
boron,
nitrogen,
oxygen,
sulfur
(B,
N,
O,
S)
heteroatom
doping
on
carbon
nanoparticles
(CNPs)
were
explored
thoroughly
experimentally
through
density
functional
theory
(DFT)
modeling,
revealing
potential
these
materials
tri‐purpose
catalysts
converting
pollutants
electrocatalysts.
B‐CNPs
had
lowest
overpotential
(338
mV)
at
current
10
mA/cm
2
,
whereas
reaction
kinetics
B–N–S‐CNPs
superior,
they
Tafel
slope
(83.09
mV/dec).
Furthermore,
all
heteroatom‐doped
CNPs
perform
better
terms
OER
than
pristine
CNPs,
are
range
1.05–1.15
V
(values
deducted
from
theoretical
1.23
vs.
RHE)
.
In
ORR,
highest
limiting
density,
onset
potential,
half‐wave
overpotential,
which
1.70
0.86,
0.64
V,
respectively.
addition
to
experimental
investigations,
DFT
simulations
used
calculate
binding
(BE),
interaction
(IE/
E
ads
),
HOMO‐LUMO
band
gap,
charge
transfer
(CT),
noncovalent
(NCI)
plot,
QTAIM
molecular
graphs
provided
evocative
outcomes
expected.
multifaceted
integrates
analyses,
contributing
comprehensive
understanding
catalytic
soot.
Язык: Английский
Microwave-Assisted Synthesis of Pd/g-C3N4 for Enhanced Photocatalytic Degradation of Sulfamethoxazole
Inorganics,
Год журнала:
2025,
Номер
13(4), С. 118 - 118
Опубликована: Апрель 8, 2025
Sulfamethoxazole
(SMX)
is
a
widely
used
antibiotic
for
bacterial
infections
and
frequently
found
in
surface
waters
wastewater
treatment
plant
effluents,
where
it
commonly
co-administered
with
trimethoprim.
Because
of
its
emerging
ecological
health
risks,
the
development
effective
elimination
strategies
urgently
required.
In
this
study,
rapid
microwave-assisted
technique
was
employed
to
synthesize
Pd/g-C3N4
photocatalyst
SMX
aqueous
solution.
The
structure
optical
properties
all
samples
were
characterized
using
X-ray
diffraction
(XRD),
transmission
electron
microscopy
(TEM),
photoluminescence
(PL),
UV–visible
diffuse
reflectance
spectroscopy.
photocatalytic
performance
systematically
evaluated
under
visible-light
irradiation.
results
demonstrated
that
achieved
97%
removal
efficiency,
significantly
outperforming
pure
g-C3N4,
which
reached
only
57%
removal.
degradation
rate
constant
calculated
be
0.0139
min−1,
approximately
6.6
times
higher
than
bare
g-C3N4.
This
enhanced
attributed
incorporation
Pd
nanoparticles,
effectively
suppressed
recombination
photogenerated
electron–hole
pairs
promoted
charge
separation.
influence
key
operational
parameters,
including
pH,
concentration,
catalyst
dose,
examined.
Furthermore,
mechanism
explored
elucidate
pathways.
Язык: Английский
Polymer Nanospheres Prepared by Metal Nanoparticles Initiation: Prospects for Application in Enhanced Oil Recovery
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 15, 2025
ABSTRACT
Recent
developments
in
enhanced
oil
recovery
(EOR)
have
identified
polyacrylamide
(PAAm)
nanospheres
as
a
promising
material
for
reservoir
applications.
The
incorporation
of
copper
nanoparticles
(Cu
NPs)
into
these
is
anticipated
to
substantially
enhance
EOR
performance.
In
this
work,
Cu
NPs
were
employed
an
alternative
conventional
initiators
the
synthesis
NPs/PAAm
nanospheres.
formation
mechanism
was
investigated,
and
their
performance
evaluated.
Experimental
results
revealed
that
can
be
effectively
nanospheres,
achieving
average
utilization
efficiency
over
85%.
exhibited
particle
size
approximately
20
nm,
significantly
smaller
than
redox
PAAm
(>
35
nm).
This
reduction
improved
droplet
removal
rate.
During
microchannel
displacement
experiments,
outperformed
maintaining
exceeding
80%
under
injection
conditions.
work
provides
valuable
insights
advancing
technology.
Язык: Английский
Emerging Photocatalytic Applications of Transition Metal Dichalcogenides and Hybrid Composites for Energy Applications and Environmental Remediation
ChemCatChem,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 24, 2025
Abstract
This
review
provides
a
critical
evaluation
of
the
photocatalytic
processes
that
control
efficiency
transition
metal
dichalcogenides
(TMDCs)
and
their
hybrid
composites
in
notable
applications,
including
pollutant
abatement,
hydrogen
evolution
reaction
(HER),
oxygen
(OER),
carbon
dioxide
(CO₂)
reduction.
TMDCs
possess
excellent
physicochemical
characteristics
with
tuneable
bandgaps,
large
surface
area,
intense
visible‐light
absorption
render
them
exceptionally
competent
for
initiating
photo‐induced
redox
reactions.
The
highlights
mechanistic
understanding
concerning
charge
carrier
generation
separation,
defect
engineering,
interfacial
electron
transfer,
all
which
is
key
to
improved
performance.
Particular
focus
on
degradation
mechanisms,
water
splitting
kinetics,
CO₂
photoreduction
mechanisms.
Though
promising,
face
challenges
such
as
photo‐corrosion,
short‐term
stability
issues,
scale‐up
limitations.
To
overcome
these
challenges,
formation
heterojunctions
visible‐light‐active
semiconductors,
halide
perovskites,
emphasized
potential
method
enhance
separation
broaden
spectral
response.
Furthermore,
integration
cocatalysts
design
multicomponent
heterostructures
are
investigated
methods
promote
durability
efficiency.
emphasizes
central
role
developing
scalable
sustainable
systems
environmental
energy
applications.
Язык: Английский
Unveiling Formation Pathways of Ternary I–III–VI CuInS2 Quantum Dots and Their Effect on Photoelectrochemical Hydrogen Generation
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 28, 2025
Abstract
Understanding
the
formation
mechanisms
of
semiconductor
nanocrystal
quantum
dots
(QDs)
is
essential
for
fine‐tuning
their
optical
and
electrical
properties.
Despite
potential
in
solar
energy
conversion,
synthesis
processes
resulting
properties
ternary
I–III–VI
QDs
remain
underexplored
due
to
complex
interplay
among
constituent
elements.
Herein,
mechanism
CuInS
2
investigated,
a
direct
correlation
between
pathways
photoelectrochemical
hydrogen
generation
performance
established.
Two
distinct
governed
by
Lewis
acid
strength
precursors
are
revealed.
Precursors
with
weaker
strength,
such
as
indium
acetate–alkylamine
complexes,
induce
nucleation
Cu
x
S
phases,
which
subsequently
transform
into
QDs.
Conversely,
exemplified
iodide–alkylamine
stronger
enable
simultaneous
incorporation
all
elements
during
nucleation,
Notably,
synthesized
through
this
pathway
exhibit
significantly
improved
lower
electron
trap
densities,
outstanding
production
an
excellent
photocurrent
density
11.3
mA
cm
−2
at
0.6
V
RHE
when
used
sensitizers
photoanodes.
These
findings
highlight
critical
role
tailoring
Язык: Английский
Synthesis of metal nanoparticles and their role in degradation of pesticides/herbicides: a review
Deleted Journal,
Год журнала:
2025,
Номер
7(6)
Опубликована: Май 28, 2025
Язык: Английский
Surface plasmon resonance and structure defects synergetic effect of ZnCdS2/NiMoO4@Cu Z-scheme heterojunction for enhanced photocatalytic CO2 reduction to CH4
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 18, 2024
ZnCdS
2
/NiMoO
4
@Cu
Z-scheme
heterojunctions
exhibit
outstanding
activity
and
nearly
100%
selectivity
for
photocatalytic
CO
reduction
to
CH
under
the
combined
effects
of
surface
defects,
heterojunction
photothermal
properties.
Язык: Английский