Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(34), P. 15813 - 15820
Published: Aug. 14, 2024
The
urea
oxidation
reaction
(UOR)
is
an
alternative
anodic
for
hydrogen
generation
via
water
splitting.
significance
of
UOR
lies
in
both
H2
production
and
the
decontamination
urea-containing
wastewater.
Commercial
electrocatalysts
this
field
are
generally
based
on
noble
metals
show
several
limitations.
Bimetal–organic
frameworks
(BMOFs)
can
be
excellent
candidates
replacement
noble-metal-based
catalysts
beacuse
their
promising
features,
such
as
a
tunable
structure,
high
surface
area,
abundant
sites
electrocatalysis.
In
study,
series
nickel–cobalt
BMOFs
(Nix-Coy-BMOFs:
x
y
refer
to
molar
fraction
Ni
Co)
were
synthesized
applied
UOR.
particular,
Ni0.15Co0.85-MOF
material
with
structure
similar
that
its
parent
Co-MOF,
revealed
exceptional
electrocatalytic
performance,
evidenced
by
low
values
overpotential
(1.33
V
vs
RHE
at
10
mA
cm–2),
TOF
(0.47
s–1),
Tafel
slope
(125
mV
dec–1).
At
40
cm–2
current
density,
also
showed
stability
during
72
h
tests.
This
performance
NiCo-BMOF
assigned
synergistic
effect
between
Co
Ni,
active
sites,
porosity,
all
which
result
increased
rate
due
acceleration
charge
mass
transfers.
Thus,
present
work
introduces
efficient
noble-metal-free
energy
from
urea-based
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(19), P. 11149 - 11175
Published: Jan. 1, 2024
The
current
review
discusses
on
vanadium-
and
manganese-based
metal–organic
frameworks
their
derivatives
for
energy
storage
conversion
applications
along
with
the
potential
future
advancements
in
these
fields.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(21)
Published: March 19, 2024
Abstract
The
generation
of
green
hydrogen
by
water
splitting
is
identified
as
a
key
strategic
energy
technology,
and
proton
exchange
membrane
electrolysis
(PEMWE)
one
the
desirable
technologies
for
converting
renewable
sources
into
hydrogen.
However,
harsh
anode
environment
PEMWE
oxygen
evolution
reaction
(OER)
involving
four‐electron
transfer
result
in
large
overpotential,
which
limits
overall
efficiency
production,
thus
efficient
electrocatalysts
are
needed
to
overcome
high
overpotential
slow
kinetic
process.
In
recent
years,
noble
metal‐based
(e.g.,
Ru/Ir‐based
metal/oxide
electrocatalysts)
have
received
much
attention
due
their
unique
catalytic
properties,
already
become
dominant
acidic
OER
process
applied
commercial
devices.
these
still
face
thorny
problem
conflicting
performance
cost.
this
review,
first,
metal
briefly
classified
according
forms
existence,
mechanisms
outlined.
Then,
focus
on
summarizing
improvement
strategies
with
respect
activity
stability
over
years.
Finally,
challenges
development
prospects
discussed.
Nanoscale,
Journal Year:
2023,
Volume and Issue:
15(28), P. 11777 - 11800
Published: Jan. 1, 2023
Transition
metal
nitrides
(TMNs)
have
become
usable
substitutes
for
precious
metals
such
as
Pt
and
Ir
in
the
field
of
electrocatalysis
because
their
high
electrocatalytic
performance,
conductivity,
good
corrosion
resistance
stability.
Small,
Journal Year:
2023,
Volume and Issue:
19(43)
Published: June 27, 2023
Urea
oxidation
reaction
(UOR)
is
one
of
the
promising
alternative
anodic
reactions
to
water
that
has
attracted
extensive
attention
in
green
hydrogen
production.
The
application
specifically
designed
electrocatalysts
capable
declining
energy
consumption
and
environmental
consequences
major
challenges
this
field.
Therefore,
goal
achieve
a
resistant,
low-cost,
environmentally
friendly
electrocatalyst.
Herein,
water-stable
fluorinated
Cu(II)
metalorganic
framework
(MOF)
{[Cu2
(L)(H2
O)2
]·(5DMF)(4H2
O)}n
(Cu-FMOF-NH2
;
H4
L
=
3,5-bis(2,4-dicarboxylic
acid)-4-(trifluoromethyl)aniline)
developed
utilizing
an
angular
tetracarboxylic
acid
ligand
incorporates
both
trifluoromethyl
(-CF3
)
amine
(-NH2
groups.
tailored
structure
Cu-FMOF-NH2
where
linkers
are
connected
by
fluoride
bridges
surrounded
dicopper
nodes
reveals
4,24T1
topology.
When
employed
as
electrocatalyst,
requires
only
1.31
V
versus
reversible
electrode
(RHE)
deliver
10
mA
cm-2
current
density
1.0
m
KOH
with
0.33
urea
electrolyte
delivered
even
higher
(50
at
1.47
RHE.
This
performance
superior
several
reported
catalysts
including
commercial
RuO2
catalyst
overpotential
1.52
investigation
opens
new
opportunities
develop
utilize
pristine
MOFs
potential
electrocatalyst
for
various
catalytic
reactions.
Materials Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
7(11), P. 2120 - 2152
Published: Jan. 1, 2023
In
this
review,
recent
advancement
of
MOF
based
materials
and
their
role
towards
OER
is
explored.
Tuning
structures
by
adopting
various
synthetic
strategical
techniques
are
discussed
for
the
first
time.
