Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 4, 2024
Abstract
Pt‐based
intermetallic
compounds
have
been
considered
promising
electrocatalysts
in
the
practical
applications
of
fuel
cells;
however,
development
catalysts
that
meet
performance
targets
high
activity,
maximized
stability,
and
low
cost
remains
a
huge
challenge.
Herein,
an
atomically
ordered
low‐Pt
nitride
(PtMn
3
N)
catalyst
are
synthesized
consisting
strained
Pt
shell
PtMn
N
core
on
carbon
support
via
KCl‐matrix
protection
strategy.
The
represents
mass
activity
0.70
A
mg
−1
at
0.9
V
specific
degradation
4.2%
after
5000
potential
cycles
for
oxygen
reduction
reaction
(ORR)
rotating
disk
electrode
(RDE)
testing,
which
substantially
outperformed
commercial
Pt/C
(0.25
17.4%).
Density
functional
theory
calculations
reveal
introduction
Mn
elements
to
lattice
is
beneficial
produce
appropriate
compressive
strain
weaken
binding
energy
species
promote
strong
metal‐N
interactions
conducive
alleviating
dissolution
metal
atoms,
allowing
displaying
prominent
durability.
This
work
provides
effective
strategy
N‐doped
enhance
corrosion
resistance
3d
transition
metals
ORR
performance.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(14), P. 10084 - 10092
Published: March 26, 2024
Glycine
is
a
nonessential
amino
acid
that
plays
vital
role
in
various
biological
activities.
However,
the
conventional
synthesis
of
glycine
requires
sophisticated
procedures
or
toxic
feedstocks.
Herein,
we
report
an
electrochemical
pathway
for
via
reductive
coupling
oxalic
and
nitrate
nitrogen
oxides
over
atomically
dispersed
Fe–N–C
catalysts.
A
selectivity
70.7%
achieved
Fe–N–C-700
at
−1.0
V
versus
RHE.
Synergy
between
FeN3C
structure
pyrrolic
facilitates
reduction
to
glyoxylic
acid,
which
crucial
producing
oxime
glycine,
could
reduce
energy
barrier
*HOOCCH2NH2
intermediate
formation
thus
accelerating
conversion
glycine.
This
new
approach
value-added
chemicals
using
simple
carbon
sources
provide
sustainable
routes
organonitrogen
compound
production.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(31)
Published: May 17, 2024
The
rational
design
of
efficient
catalysts
for
uric
acid
(UA)
electrooxidation,
as
well
the
establishment
structure-activity
relationships,
remains
a
critical
bottleneck
in
field
electrochemical
sensing.
To
address
these
challenges,
herein,
hybrid
catalyst
that
integrates
carbon-supported
Pt
nanoparticles
and
nitrogen-coordinated
Mn
single
atoms
(Pt
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 22, 2024
Pt-based
intermetallics
are
expected
to
be
the
highly
active
catalysts
for
oxygen
reduction
reaction
(ORR)
in
proton-exchange
membrane
fuel
cells
but
still
face
great
challenges
controllable
synthesis
of
interatomically
ordered
and
ultrafine
intermetallic
nanoparticles.
Here,
we
propose
an
vacancy-mediated
atomic
diffusion
strategy
by
mechanical
alloying
reduce
energy
barrier
transition
from
interatomic
disordering
ordering,
resist
interparticulate
sintering
via
strong
M-O-C
bonding.
This
results
a
nanosized
core/shell
structure
featuring
PtM
core
Pt
shell
two
three
layers
thickness
can
extended
multicomponent
(M
=
Co,
FeCo,
FeCoNi,
FeCoNiGa)
systems.
The
electron
enrichment
outer
induced
compressive
strain
leads
enhanced
antibonding
orbital
occupation
below
Fermi
level
accelerated
OH*
desorption
kinetics.
optimized
PtCo-O/C-6
catalyst
presents
excellent
ORR
activity
(mass
1.28
A
mg
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(19), P. 11669 - 11680
Published: Jan. 1, 2024
A
practical
strategy
is
reported
to
design
single-Fe
atom
decorated
S/N-doped
C
(Fe
SAs@S/N–C)
catalysts
with
a
high
Fe
loading
of
5.45
wt%.
The
prepared
exhibit
excellent
performances
for
liquid
and
all-solid-state
Zn–air
batteries.
Journal of Inorganic and Organometallic Polymers and Materials,
Journal Year:
2024,
Volume and Issue:
34(7), P. 2926 - 2947
Published: April 16, 2024
Abstract
The
characteristic
feature
of
a
biofunctional
system
is
that
components
with
various
functions
work
together.
These
multi-components
are
not
simply
mixed
together,
but
rationally
arranged.
fundamental
technologies
to
do
this
in
an
artificial
include
the
synthetic
chemistry
substances
make
component
unit,
science
and
techniques
for
assembling
them,
technology
analyzing
their
nanoostructures.
A
new
concept,
nanoarchitectonics,
can
play
role.
Nanoarchitectonics
post-nanotechnology
concept
involves
building
functional
materials
reflect
nanostructures.
In
particular,
approach
combining
multiple
types
create
composite
area
where
nanoarchitectonics
be
powerful
tool.
This
review
summarizes
such
examples
related
studies.
presented
areas
catalyst
&
photocatalyst,
energy,
sensing
environment,
bio
medical,
other
applications
illustrate
potential
wide
range
applications.
order
show
stages
development,
only
state-of-the-art,
also
those
successful
developments
existing
research.
Finally,
summary
brief
discussion
future
challenges
will
given.
applicable
all
aims
establish
ultimate
methodology
science.
