Oxygen
evolution
reaction
(OER)
is
a
key
electrochemical
redox
involved
in
metal–air
batteries
and
water-splitting
devices.
Reducing
the
energy
barrier
of
these
reactions
accentuates
necessity
designing
competent
electrocatalysts.
There
an
urgent
demand
for
affordable
durable
catalysts
utilizing
non-noble
metals,
specifically
Ni,
Co,
Fe,
OER.
In
this
context,
three
following
cobalt(II)
coordination
frameworks
based
on
pyridyl
carboxylic
acid
ligand
were
synthesized:
[Co3(μ3-OH)(PCA)4(DMF)2(H2O)](NO3)·DMF·3H2O
(1),
[Co3(μ3-OH)(PCA)4(EtOH)3](NO3)·3EtOH·3H2O
(2),
[Co3(μ3-OH)(PCA)4(DMA)2(H2O)]
(ClO4)·DMA·H2O)
(3)
using
solvothermal
method.
The
single-crystal
diffraction
studies
confirm
similarity
three-center
cobalt
secondary
building
unit
(SBU)
final
3D
topology.
These
are
investigated
as
potential
OER
under
alkaline
(1
M
KOH)
conditions.
Compound
1
shows
extraordinary
activity
demonstrating
overpotential
value
0.37
V
at
10
mA
cm–2
Tafel
slope
78.9
mV.
alternation
sphere
resulting
from
difference
coordinated
solvent
emerges
intriguing
reason
contributing
to
exceptional
network.
effective
electronic
modulation
within
trinuclear
center
induced
by
changes
has
lowered
free
desorption
oxygen
produced.
This
work
emphasizes
significant
influence
effect
environment
catalytic
activity,
serving
template
advanced
electrocatalysts
that
noble
metals.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(33), P. 43670 - 43681
Published: Aug. 13, 2024
Solar-driven
interfacial
water
evaporation
(SIWE)
has
emerged
as
a
promising
avenue
for
cost-effective
freshwater
production
from
seawater
or
wastewater.
However,
the
simultaneous
of
volatile
organic
compounds
(VOCs)
presents
limitation
widespread
implementation
this
technique.
Thus,
developing
dual-functional
evaporators
capable
both
desalining
and
degrading
VOCs
is
challenging.
Herein,
we
fabricated
an
iron-based
metal-organic
framework
MIL-88A/carbon
nanotubes
(CNTs)
poly(vinyl
alcohol)
hydrogel
(MCH)
evaporator
via
conventional
freezing
method
solar-driven
desalination
photo-Fenton
VOC
degradation.
Because
superior
photothermal
conversion
capability
CNTs,
reduced
thermal
conductivity
enthalpy
within
hydrogel,
activity
rod-shaped
MIL-88A,
MCH
exhibits
higher
rate
2.26
kg
m
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
60(67), P. 8789 - 8805
Published: Jan. 1, 2024
The
energy
transition
from
fossil
fuel-based
to
renewable
is
a
global
agenda.
At
present,
major
concern
in
the
green
hydrogen
economy
demand
for
clean
fuels
and
non-noble
materials
produce
through
water
splitting.
Researchers
are
focusing
on
addressing
this
with
help
of
development
appropriate
non-noble-based
photo-/electrocatalytic
materials.
A
new
class
two-dimensional
materials,
MXenes,
have
recently
shown
tremendous
potential
splitting
H
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 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.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(15), P. 18782 - 18789
Published: April 3, 2024
Due
to
its
affordable
cost,
excellent
redox
capability,
and
relatively
effective
resistance
corrosion
in
alkaline
environments,
spinel
Co3O4
demonstrates
potential
as
a
viable
alternative
noble-metal-based
electrocatalysts.
Nevertheless,
these
materials
continue
exhibit
drawbacks,
such
limited
active
surface
area
inadequate
intrinsic
conductivity.
Researchers
have
been
trying
increase
the
electrical
conductivity
of
nanostructures
by
integrating
them
with
various
conductive
substrates
due
low
pristine
Co3O4.
In
this
study,
uniform
cobalt
glycerate
solid
spheres
are
first
synthesized
precursor
subsequently
transformed
into
oxide
microspheres
simple
annealing
procedure.
grown
on
Ti3C2Tx-MXene
nanosheets
(Co3O4/MXene)
was
successfully
through
electrostatic
attraction.
order
create
positively
charged
surface,
were
treated
aminopropyltriethoxysilane.
The
Co3O4/MXene
exhibited
overpotential
118
mV
at
10
mA
cm–2
Tafel
slope
113
dec–1
for
hydrogen
evolution
reaction,
which
is
much
lower
than
232
195.3
dec–1.
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
interface
engineering-based
400N-CDs/FeNi-TDC
electrocatalytic
material
is
important
for
the
construction
of
efficient
self-powered
OWS
to
produce
renewable
energy.
