Science China Materials,
Год журнала:
2024,
Номер
68(1), С. 21 - 38
Опубликована: Ноя. 8, 2024
Abstract
The
conversion
of
carbon
dioxide
(CO
2
)
to
the
reduced
chemical
compounds
offers
substantial
environmental
benefits
through
minimizing
emission
greenhouse
gas
and
fostering
sustainable
practices.
Recently,
unique
properties
metal-organic
frameworks
(MOFs)
make
them
attractive
candidates
for
electrocatalytic
CO
reduction
reaction
RR),
providing
many
opportunities
develop
efficient,
selective,
environmentally
processes
mitigating
emissions
utilizing
as
a
valuable
raw
material
synthesis
fuels
chemicals.
Here,
recent
advances
in
MOFs
efficient
catalysts
RR
are
summarized.
detailed
characteristics,
mechanisms,
practical
approaches
improving
efficiency,
selectivity,
durability
under
realistic
conditions
also
clarified.
Furthermore,
outlooks
on
prospects
MOF-based
electrocatalysts
provided.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(2), С. 1038 - 1050
Опубликована: Янв. 3, 2024
Rational
modification
of
the
chemical
components
metal–organic
framework
(MOF)
is
one
most
promising
and
challenging
strategies
to
alternate
noble
metals
in
electrochemical
water-splitting
field.
Multimetallic
MOFs
have
emerged
as
excellent
materials
for
several
applications;
however,
it
remains
a
significant
challenge
synthesize
characterize
these
materials.
In
this
work,
we
report
facile
approach
synthesizing
series
multimetallic
MOF
nanosheet-assembled
hierarchical
flower-like
morphologies
highly
active
durable
electrocatalysts
natural
seawater
electrolysis.
Simultaneously,
their
three-dimensional
nanostructures
can
provide
abundant
sites,
improve
intrinsic
catalytic
activity,
facilitate
electron
transfer.
Consequently,
obtained
RhCoNi-MOF
exhibits
overpotentials
low
40,
48,
50
mV
at
10
mA
cm–2
alkaline
freshwater,
simulated
seawater,
seawater.
also
offers
an
outstanding
performance
comparable
Pt/C.
Impressively,
two-electrode
overall
electrolysis
device
using
bifunctional
catalyst
requires
voltage
1.52
V
stably
maintain
over
80
h.
The
density
functional
theory
calculation
reveals
that
superior
electrocatalytic
activity
be
attributed
synergistic
effects
introducing
Co
Rh
metal
ions.
Chemical Society Reviews,
Год журнала:
2024,
Номер
53(19), С. 9490 - 9559
Опубликована: Янв. 1, 2024
Conductive
metal-organic
frameworks
are
of
current
interest
in
chemical
science
because
their
applications
chemiresistive
sensing,
electrochemical
energy
storage,
electrocatalysis,
RSC Advances,
Год журнала:
2024,
Номер
14(4), С. 2205 - 2213
Опубликована: Янв. 1, 2024
Efficient
energy
storage
and
conversion
is
crucial
for
a
sustainable
society.
Battery-supercapacitor
hybrid
devices
offer
promising
solution,
bridging
the
gap
between
traditional
batteries
supercapacitors.
In
this
regard,
metal-organic
frameworks
(MOFs)
have
emerged
as
most
versatile
functional
compounds
owing
to
their
captivating
structural
features,
unique
properties,
extensive
diversity
of
applications
in
storage.
MOF
properties
are
governed
by
structure
topological
characteristics,
which
influenced
types
ligands
metal
nodes.
Herein,
MOFs
based
on
pyridine
3,5-dicarboxylate
(PYDC)
ligand
combination
with
copper
cobalt
electrochemically
analyzed.
Owing
initial
characterization
Cu-PYDC-MOF,
battery
supercapacitor
device
was
fabricated,
comprising
Cu-PYDC-MOF
activated
carbon
(AC)
electrodes.
The
showcased
power
density
17
W
h
kg
Chemical Society Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 20, 2024
Mixed-valence
MOFs
have
exhibited
unique
features
in
different
practical
fields,
resulting
from
long-range
charge
delocalization
and
a
tunable
band
gap
within
the
framework.
Covalent
organic
frameworks
(COFs)
have
great
potential
as
electrodes
for
aqueous
hybrid
supercapacitors
(AHCs)
owing
to
their
designable
structure
and
resourceful
advantages.
However,
low
capacities
high
instability
in
electrolytes
limit
the
onward
practical
applications.
Here,
we
synthesized
robust
hexaazatrinaphthylene-based
COF
(HATN-COF)
by
a
simple
condensation
between
cyclohexanehexone
2,3,6,7,10,11-hexaiminotriphenylene.
The
π-conjugation
skeleton,
porous
structure,
high-proportioned
imine
bonds
give
HATN-COF
sufficient
electron
ion
diffusion
pathways
rapid
reaction
kinetics
together
with
abundant
exposed
active
sites
large
capacity.
Meanwhile,
formed
hydrogen
bond
networks
ethanol
molecules
improve
acid-base
tolerance.
As
consequence,
delivers
an
exceptional
specific
capacity
of
367
mAhg-1
at
1
A
g-1
(maximum
value
among
reported
COF-related
AHCs),
rate
capability
259.7
20
g-1,
superior
cycle
durability
retaining
97.8%
its
even
after
20,000
cycles.
Moreover,
AHC,
constructed
positive
electrode
activated
carbon
negative
electrode,
exhibits
energy
density
67
Wh
kg-1
power
375
W
kg-1,
accompanied
outstanding
cycling
stability.
research
presents
promising
approach
designing
high-performance
advanced
AHCs.
Abstract
A
novel
semiconductive
Co/Fe‐MOF
embedded
with
Fe
2
O
3
nanocrystals
(Fe
@CoFe‐MOF)
is
developed
as
a
trifunctional
electrocatalyst
for
the
urea
oxidation
reaction
(UOR),
oxygen
evolution
(OER),
and
hydrogen
enhancing
efficiency
of
production
via
urea‐assisted
overall
water
splitting.
@CoFe‐TPyP‐MOF
comprises
unsaturated
metal‐nitrogen
coordination
sites,
affording
enriched
defects,
self‐tuned
d
‐band
centers,
efficient
π
–
interaction
between
different
layers.
Density
functional
theory
calculation
confirms
that
adsorption
can
be
optimized
at
@CoFe‐TPyP‐MOF,
realizing
intermediates
desorption
final
product
CO
N
characterized
by
in
situ
Fourier
transform
infrared
spectroscopy.
The
two‐electrode
splitting
device‐assembled
illustrates
low
cell
voltage
1.41
V
versus
reversible
electrode
current
density
10
mA
cm
−2
,
attaining
rate
13.13
µmol
min
−1
1
m
KOH
0.33
urea.
electrochemical
Raman
spectra
other
basic
characterizations
used
uncover
undergoes
structural
reconstruction
after
UOR
test,
while
it
demonstrates
irreversible
OER
measurement.
This
work
redounds
progress
spitting
production.
