Quimica Hoy,
Journal Year:
2023,
Volume and Issue:
12(02), P. 25 - 31
Published: Nov. 19, 2023
Este
trabajo
reporta
la
síntesis
de
un
catalizador
bimetálico
compuesto
por
nanopartículas
Pd
y
Cu
soportados
en
carbón
Vulcan
activado
(Pd-Cu/C).
El
Pd-Cu/C
se
sintetizó
el
método
poliol
asistido
mediante
microondas
caracterizó
estudio
sus
propiedades
fisicoquímicas
estructurales
con
diversas
técnicas,
tales
como:
Microscopía
electrónica
barrido,
Espectroscopía
dispersión
energía,
Espectrometría
retrodispersión
Rutherford
Difracción
Rayos
—X.
Estas
técnicas
mostraron
formación
aleación
una
estructura
cubica
cristalina.
La
caracterización
electroquímica
del
reportó
excelente
actividad
electro-oxidación
etanol
(1.0
M)
bio-etanol
medio
alcalino
(1
M
KOH).
Asimismo,
mostró
ser
estable
durante
100
ciclos
(con
potencial
aplicado
-0.19
V
vs
electrodo
Calomel
saturado)
sin
mostrar
envenenamiento
CO
ni
generar
sub-productos.
Physical Chemistry Chemical Physics,
Journal Year:
2024,
Volume and Issue:
26(22), P. 15804 - 15817
Published: Jan. 1, 2024
Volatile
organic
compounds
(VOCs)
are
common
contaminants
found
as
indoor
well
outdoor
pollutants,
which
can
induce
acute
or
chronic
health
hazards
to
the
human
physiological
system.
The
catalytic
oxidation
method
is
widely
considered
one
of
effective
methods
for
removing
VOCs,
and
development
highly
catalysts
urgent
booming
this
interesting
field.
This
review
focuses
on
recent
progress
VOC
catalyzed
by
supported
nano-sized
precious
metal
catalysts,
discusses
effects
composition,
supports,
size,
morphology
activity.
In
addition,
roles
played
both
metals
supports
in
enhancing
performance
VOCs
also
systematically
discussed,
will
guide
further
more
advanced
catalysts.
ChemistrySelect,
Journal Year:
2024,
Volume and Issue:
9(12)
Published: March 25, 2024
Abstract
We
report
a
mild,
one‐pot
synthesis
of
PdPtAuAgCuIr
multimetallic
nanocrystals
with
controlled
shapes
and
explore
their
applications
as
the
electrocatalysts
for
ethanol
electrooxidation
in
alkaline
medium.
The
success
current
relies
on
co‐reduction
six
metal
precursors
presence
octadecylammonium
chloride
ascorbic
acid
at
an
elevated
temperature.
resulting
products
are
featured
in‐plane
core‐shell
structure,
together
trigonal/hexagonal
plate
decorated
granular
edges.
When
serving
EOR
electrocatalysts,
carbon‐supported
exhibit
more
than
five‐fold
increase
mass
activity
compared
to
that
commercial
Pt/C,
well
improved
reaction
kinetics
long‐term
durability.
DFT
calculations
disclose
reduced
energy
barrier
renders
Pd‐based
catalyst
catalytic
performance.
present
study
provides
feasible
strategy
create
two‐dimensional
morphology
under
ambient
conditions,
shedding
light
rational
design
over
advanced
fuel
cell
catalysts
composed
alloy.
Dalton Transactions,
Journal Year:
2023,
Volume and Issue:
52(38), P. 13452 - 13466
Published: Jan. 1, 2023
The
intercalation
of
H
into
Pd-based
nanocatalysts
plays
a
crucial
role
in
optimizing
the
catalytic
performance
by
tailoring
structural
and
electronic
properties.
We
herein
present
comprehensive
review
about
recent
progress
interstitial
hydrogen
atom
modified
for
various
energy-related
electrocatalytic
reactions.
Before
systematically
manifesting
great
potential
hydrides
applications,
we
have
briefly
illustrated
synthesis
strategies
corresponding
mechanisms
hydrides.
This
is
followed
discussion
fundamentals
functions
their
physicochemical
electrochemical
Subsequently,
focus
on
widespread
application
reactions,
with
emphasis
played
determining
performance.
Finally,
future
direction
perspectives
regarding
development
more
efficient
are
also
manifested.
Nanotechnology,
Journal Year:
2024,
Volume and Issue:
35(40), P. 402003 - 402003
Published: July 18, 2024
Benefiting
from
the
ultrahigh
specific
surface
areas,
massive
exposed
atoms,
and
highly
tunable
microstructures,
two-dimensional
(2D)
noble
metal
nanosheets
(NSs)
have
presented
promising
performance
for
various
electrocatalytic
reactions.
Nevertheless,
heteroatom
doping
strategy,
in
particular,
electronic
structure
tuning
mechanisms
of
2D
catalysts
(NMCs)
yet
remain
ambiguous.
Herein,
we
first
review
several
effective
strategies
modulating
NMCs.
Then,
effect
hetero-dopants
boosting
properties
NMCs
is
systematically
discussed.
Finally,
put
forward
current
challenges
field
NMCs,
propose
possible
solutions,
particularly
perspective
evolution
electron
microscopy.
This
attempts
to
establish
an
intrinsic
correlation
between
structures
catalytic
properties,
so
as
provide
a
guideline
designing
high-performance
electrocatalysts.
Bismuthene,
a
two-dimensional
nanostructured
material
derived
from
the
environmentally
friendly
and
nontoxic
element
bismuth,
holds
significant
potential
for
sustainable
electrocatalytic
applications.
However,
large-scale
application
of
bismuthene
is
hindered
by
absence
high-throughput
method
synthesizing
solution-processable
nanosheets,
which
are
essential
straightforward
low-cost
fabrication
bismuthene-based
nanostructure
devices.
This
study
introduces
simple
solvothermal
using
hexamethylenetetramine
(HMTA)
as
structure-directing
agent
in
situ-generated
hydrogen
(H2)
alkaline
hydrolysis
NaBH4
reducing
agent.
The
structural
electron
transfer
properties
were
characterized
microscopic,
spectroscopic,
electrochemical
analyses.
To
demonstrate
potential,
bismuthene-modified
screen-printed
carbon
nanotube
electrode
was
fabricated
nanosensor
quantitative
detection
heavy
metal
ions
contaminated
water.
exhibited
wide
linear
concentration
range
low
limits
0.1
0.16
ppb
(μg/L)
Cd
Pb,
respectively.
Additionally,
sensor
integrated
with
microfluidic
flow
cell,
demonstrating
its
applicability
flow-through
analysis
Pb
ions.
showed
high
selectivity
presence
other
excellent
repeatability
sensor-to-sensor
reproducibility,
evidenced
relative
standard
deviation
2%
10%,
The Chemical Record,
Journal Year:
2023,
Volume and Issue:
23(10)
Published: May 26, 2023
Abstract
Low‐dimensional
high‐entropy
alloy
(HEA)
nanomaterials
are
widely
employed
as
electrocatalysts
for
energy
conversion
reactions,
due
to
their
inherent
advantages,
including
high
electron
mobility,
rich
catalytically
active
site,
optimal
electronic
structure.
Moreover,
the
high‐entropy,
lattice
distortion,
and
sluggish
diffusion
effects
also
enable
them
be
promising
electrocatalysts.
A
thorough
understanding
on
structure‐activity
relationships
of
low‐dimensional
HEA
catalyst
play
a
huge
role
in
future
pursuit
more
efficient
In
this
review,
we
summarize
recent
progress
catalytic
conversion.
By
systematically
discussing
fundamentals
properties
nanostructures,
highlight
advantages
HEAs.
Subsequently,
present
many
catalysts
electrocatalytic
aiming
gain
better
relationship.
Finally,
series
upcoming
challenges
issues
thoroughly
proposed
well
directions.
Quimica Hoy,
Journal Year:
2023,
Volume and Issue:
12(02), P. 25 - 31
Published: Nov. 19, 2023
Este
trabajo
reporta
la
síntesis
de
un
catalizador
bimetálico
compuesto
por
nanopartículas
Pd
y
Cu
soportados
en
carbón
Vulcan
activado
(Pd-Cu/C).
El
Pd-Cu/C
se
sintetizó
el
método
poliol
asistido
mediante
microondas
caracterizó
estudio
sus
propiedades
fisicoquímicas
estructurales
con
diversas
técnicas,
tales
como:
Microscopía
electrónica
barrido,
Espectroscopía
dispersión
energía,
Espectrometría
retrodispersión
Rutherford
Difracción
Rayos
—X.
Estas
técnicas
mostraron
formación
aleación
una
estructura
cubica
cristalina.
La
caracterización
electroquímica
del
reportó
excelente
actividad
electro-oxidación
etanol
(1.0
M)
bio-etanol
medio
alcalino
(1
M
KOH).
Asimismo,
mostró
ser
estable
durante
100
ciclos
(con
potencial
aplicado
-0.19
V
vs
electrodo
Calomel
saturado)
sin
mostrar
envenenamiento
CO
ni
generar
sub-productos.
