Chemistry of Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 21, 2024
The
advancement
of
highly
efficient
and
durable
electrocatalysts
for
the
oxygen
evolution
reaction
(OER)
is
essential
advancing
sustainable
hydrogen
energy
technologies.
In
this
study,
we
synthesized
a
novel
medium-entropy
metal
nitride
(MEMN),
FeCoNiZnN,
with
an
antiperovskite
structure
through
solid-phase
method.
FeCoNiZnN
displays
ferromagnetism
above
350
K
demonstrates
exceptional
OER
performance
specific
activity
141
times
greater
than
that
Co3ZnN,
overpotential
only
301
mV
at
10
mA
cm–2,
comparable
to
commercial
RuO2
catalysts,
exhibits
superior
durability.
Density
functional
theory
(DFT)
calculations
reveal
enhanced
catalytic
due
optimized
electronic
properties
improved
d-band
centers,
which
enhance
adsorption
intermediates
reduce
free
barriers
rate-determining
step.
This
study
highlights
potential
MEMNs
in
developing
advanced
magnetic
materials
electrocatalysts.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 23, 2025
The
platelike
nickel-terephthalate-type
metal-organic
framework
nanoarrays
(Ni-BDC
NAs)
on
carbon
cloth
are
obtained
by
employing
agaric-like
Ni(OH)2
NAs
as
sacrificial
templates.
microenvironment
of
Ni-BDC
is
modulated
various
neighboring
functional
groups
(-NH2,
-NO2,
and
-Br)
the
carboxylate
ligand,
exerting
minimal
destructive
effects
structure
morphology
NAs.
electrochemical
oxygen
evolution
reaction
(OER)
Ni-BDC-NH2
NAs,
Ni-BDC-NO2
Ni-BDC-Br
exhibited
a
significant
enhancement
compared
to
that
alone,
evidenced
both
experimental
theoretical
assessments.
presence
exerts
positive
influence
electronic
coupling
between
Ni
O
atoms,
thereby
facilitating
thermodynamically
favorable
formation
*O
intermediates
sites
accelerating
kinetics
OER.
findings
presented
here
provide
valuable
insights
for
design
utilization
carboxylic
acid
molecules
with
group
effects,
enhancing
activity
OER
across
diverse
centers.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 26, 2025
Abstract
Achieving
close
integration
and
strong
electronic
communication
between
molecular
catalysts
conductive
substrates
is
crucial
for
developing
the
stability
catalytic
activity
of
nanomaterials.
However,
constructing
heterostructure
catalyst
usually
need
complex
demanding
synthesis
processes.
Herein,
a
facile
universal
“molecular
nanojunction”
strategy
developed
to
prepare
with
high
by
improving
coplanarity
nanojunction
facilitating
efficient
electron
transfer.
The
density
function
theory
(DFT)
calculations
in
situ
characterization
indicate
that
reduces
excessive
*
OH
adsorption
accelerates
deprotonation
process,
thereby
promoting
oxygen
generation.
shows
better
evolution
reaction
(OER)
performance
than
most
reported
catalysts.
What's
more,
are
applied
alkaline
anion
exchange
membrane
(AEM)
electrolysis
cells,
exhibiting
excellent
performance.
Journal of Nanobiotechnology,
Journal Year:
2025,
Volume and Issue:
23(1)
Published: Feb. 22, 2025
It
is
urgent
to
exploit
multifunctional
materials
and
combined
approaches
for
efficient
antitumor
effects.
Copper-based
metal–organic
frameworks
(Cu-MOFs)
have
excellent
performances
in
catalysis,
biocompatibility,
photothermal
conversion,
regulate
metabolism,
which
make
them
attract
more
attention
application.
Therefore,
this
review,
representative
ligands,
synthetic
methods,
mechanism,
applications
of
Cu-MOFs
were
provided.
Special
emphasis
placed
on
the
recent
drug
carriers,
therapy,
tumor
imaging,
theranostic,
are
summarized
with
examples.
Finally,
we
presented
dilemma
faced
by
offered
a
new
perspective
future
Hopefully,
review
may
serve
as
reference
further
development
application
Cu-MOFs.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Optimizing
the
adsorption
and
desorption
kinetics
of
oxygen
evolution
reaction
(OER)
is
crucial
for
efficient
overall
water
splitting.
Herein,
we
report
a
series
porous
ferrocene-based
metal–organic
framework
(MFc-MOF,
M
=
Co,
Ni,
Fe,
Mn)
nanoflowers
featuring
close
π–π
stacking
lattice
structure
as
model
catalysts,
explore
structure–activity
relationship.
Operando
electrochemical
impedance
spectroscopy
implies
that
synthesized
CoFc-MOF@NF
facilitates
intermediate
desorption.
It
exhibits
an
ultralow
overpotential
189
mV
at
10
mA
cm–2
maintains
stability
250
h.
In
splitting
device,
when
serves
anode,
it
yields
significantly
lower
cell
voltage
than
commercial
RuO2
shows
excellent
100
situ
Raman
reveals
surface
transforms
into
CoFeOOH,
OER-active
species,
while
preserving
MOF
framework.
The
inner
MOF's
ferrocene
units
act
electron-transfer
mediators.
These
findings
highlight
CoFc-MOF@NF's
potential
leading
catalyst
sustainable
hydrogen
production,
combining
high
catalytic
activity,
rapid
kinetics,
robust
stability.
This
work
presents
new
approach
to
balance
activity
in
MOF-based
OER
catalysts.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 21, 2025
Abstract
Iron
(Fe)‐based
materials
hold
great
potential
as
urea
oxidation
reaction
(UOR)
catalysts,
however,
the
deactivation
of
active
Fe‐oxyhydroxide
(FeOOH)
species
induced
by
its
dissolution
during
catalytic
process
under
high
current
densities
is
still
significant
challenge.
Herein,
cobalt
(Co)
assembled
FeOOH
constructed,
and
formation
Iron‐Oxygen‐Cobalt
(Fe‐O‐Co)
bridging
triggers
electron
transfer
from
Co
to
Fe
sites.
This
shuttling
induces
low
valence
state
sites
in
FeOOH.
Co‐FeOOH
catalyst
achieves
a
density
1000
mA
cm
−2
at
voltage
merely
1.59
V,
showing
substantial
improvement
compared
pure
(1.97
V).
Meanwhile,
urea‐assisted
anion
exchange
membrane
electrolyzer,
after
24
h
continuous
operation
,
fluctuation
12.4%,
significantly
lower
than
that
(49.9%).
The
situ
experiments
theoretical
calculations
demonstrate
Fe‐O‐Co
endows
suppressive
Fe‐segregation,
fast
charge
Fe(Co)OOH
phase
negative‐shifted
d‐band
center
metal
sites,
boosting
UOR
stability
activity.
Inorganic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(17), P. 5636 - 5647
Published: Jan. 1, 2024
A
series
of
fluorinated
UiO-66
was
prepared
using
the
bottom-up
method.
The
composites
2CF
3
-UiO-66
and
cotton
show
excellent
oil–water
separation
efficiency
(up
to
99.66%).
