Environmental Science and Ecotechnology,
Journal Year:
2023,
Volume and Issue:
20, P. 100383 - 100383
Published: Dec. 28, 2023
Global
water
bodies
are
increasingly
imperiled
by
nitrate
pollution,
primarily
originating
from
industrial
waste,
agricultural
runoffs,
and
urban
sewage.
This
escalating
environmental
crisis
challenges
traditional
treatment
paradigms
necessitates
innovative
solutions.
Electro-catalysis,
especially
utilizing
copper-based
catalysts,
known
for
their
efficiency,
cost-effectiveness,
eco-friendliness,
offer
a
promising
avenue
the
electro-catalytic
reduction
of
to
ammonia.
In
this
review,
we
systematically
consolidate
current
research
on
diverse
including
pure
Cu,
Cu
alloys,
oxides,
single-atom
entities,
composites.
Furthermore,
assess
catalytic
performance,
operational
mechanisms,
future
directions
find
effective,
long-term
solutions
purification
ammonia
synthesis.
Electro-catalysis
technology
shows
potential
in
mitigating
pollution
has
strategic
importance
sustainable
management.
As
application,
regarding
complexity
real
water,
scale-up
commerical
efficient
collection
produced
NH
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(5), P. 3320 - 3335
Published: Feb. 16, 2024
Nowadays,
the
assembling
of
hybrid
water
electrolysis
using
a
hydrazine
oxidation
reaction
(HzOR)
instead
slow
anodic
oxygen
evolution
(OER)
has
been
established
as
favorable
technology
for
efficient
hydrogen
(H2)
production.
Nevertheless,
it
is
still
critical
to
develop
highly
effective
bifunctional
electrocatalysts
both
(HER)
and
HzOR.
In
this
work,
we
propose
facile
approach
design
synthesis
single-Pd-nanoparticles-decorated
bimetallic
NiCo2O4
nanoplates
electrocatalyst
HER
Initially,
are
synthesized
by
combination
hydrothermal
high-temperature
calcination.
Subsequently,
single-Pd
nanoparticles
with
varying
proportions
decorated
on
via
pulsed
laser
irradiation
(PLI),
leading
formation
Pd/NiCo2O4
composites.
The
optimized
composite
shows
remarkable
electrocatalytic
ability
low
overpotential
294
mV
an
ultrasmall
working
potential
−6
(vs
RHE)
HzOR
at
10
mA
cm–2
in
1
M
KOH
electrolyte.
Thus,
overall
splitting
(OHzS)
electrolyzer
Pd/NiCo2O4∥Pd/NiCo2O4
system
presents
current
densities
100
respective
cell
voltages
0.35
0.94
V.
Notably,
situ/operando
Raman
spectroscopy
confirms
surface
α-Co(OH)2
during
γ-NiOOH
Furthermore,
density
function
theory
(DFT)
calculations
demonstrate
that
decoration
Pd
onto
facilitates
optimization
adsorption
free
energy
(ΔGH*)
enhancement
dehydrogenation
kinetics.
This
work
introduces
strategy
fabricating
electrocatalysts,
potentially
useful
energy-saving
H2
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(40)
Published: July 26, 2024
Abstract
The
use
of
photons
to
directly
or
indirectly
drive
chemical
reactions
has
revolutionized
the
field
nanomaterial
synthesis
resulting
in
appearance
new
sustainable
laser
chemistry
methods
for
manufacturing
micro‐
and
nanostructures.
incident
radiation
triggers
a
complex
interplay
between
physical
processes
at
interface
solid
surface
liquid
gas
environment.
In
such
multi‐parameter
system,
precise
control
over
nanostructures
is
not
possible
without
deep
understanding
both
environment‐affected
processes.
present
review
intends
provide
detailed
systematization
these
surveying
well‐established
emerging
technologies
production
advanced
nanomaterials.
Both
gases
liquids
are
considered
as
potential
reacting
environments
affecting
fabrication
process,
while
subtractive
additive
analyzed.
Finally,
prospects
applications
discussed.
International Journal of Hydrogen Energy,
Journal Year:
2024,
Volume and Issue:
71, P. 433 - 464
Published: May 22, 2024
This
paper
provides
an
in-depth
examination
of
critical
and
strategic
raw
materials
(CRMs)
their
crucial
role
in
the
development
electrolyzer
fuel
cell
technologies
within
hydrogen
economy.
It
methodically
analyses
a
range
technologies,
including
alkaline,
proton-exchange
membrane,
solid-oxide,
anion-exchange
proton-conducting
ceramic
systems.
Each
technology
is
examined
for
its
specific
CRM
dependencies,
operational
characteristics,
challenges
associated
with
availability
sustainability.
The
study
further
extends
to
storage
separation
focusing
on
employed
high-pressure
cylinders,
metal
hydrides,
processes,
implications.
A
key
aspect
this
exploration
supply
demand
dynamics
CRMs,
offering
comprehensive
view
that
encompasses
both
present
sttate
future
projections.
aim
uncover
potential
risks,
understand
strategies,
identify
bottlenecks
involved
addressing
current
needs
demands
as
well
supply.
approach
essential
planning
sustainable
sector,
emphasizing
importance
CRMs
achieving
expanded
capacity
leading
up
2050.
ChemElectroChem,
Journal Year:
2024,
Volume and Issue:
11(11)
Published: Feb. 6, 2024
Abstract
Supercapacitor
(SC)
devices
holds
an
important
position
between
traditional
capacitors
and
ion
batteries
in
terms
of
energy
density
power
values.
In
particular,
SC′s
greater
values
than
Li‐ion
make
them
useful
for
some
specific
applications,
such
as
storing
hybrid
cars
while
the
car
slows
down.
Increasing
is
one
key
challenges
SC
community.
Transition
metal
dichalcogenides
(TMDCs),
are
new
developing
material
systems
to
have
this
potential,
compared
their
counterparts’
transition
oxides
conductive
polymers.
This
review
about
giving
insight
into
electrochemical
performances
two‐dimensional
(2D)
layered
sulfides
(TMS)
MoS
2
,
WS
TaS
NbS
VS
TiS
ZrS
materials.
On
other
hand,
methods
mostly
used
synthesizing
these
materials
presented.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(15), P. 8694 - 8706
Published: Jan. 1, 2024
Herein,
we
present
Ir-doped
NiFe-LDH
nanosheets
synthesized
via
a
pulsed
laser
irradiation
strategy,
showing
superior
electrocatalytic
OER
kinetics.
We
investigate
the
origin
of
activity
in
NiFeIr-LDH
through
situ
/
operando
Raman
and
DFT
studies.
Results in Physics,
Journal Year:
2024,
Volume and Issue:
58, P. 107471 - 107471
Published: Feb. 12, 2024
In
this
study,
graphene
oxide
(GO),
ZnO
nanoparticles
(NPs)
and
GO
based
nanocomposites
(GO-ZnO)
have
been
successfully
synthesized
by
modified
Hummer's
method,
chemical
co-precipitation
method
ultrasonication
respectively.
Powder
X-ray
diffraction
(PXRD),
transmission
electron
microscopy
(TEM)
Fourier
transform
infrared
(FTIR)
spectroscopy
were
employed
to
study
the
crystallographic
structure,
phase,
surface
micro-morphology
different
functional
groups
in
prepared
catalysts.
The
optical
band
gap
of
pristine
NPs
was
found
UV
region
(3.2
eV),
whereas
immobilized
on
nanosheets
possesses
it
visible
wavelength
(2.67
eV).
GO-ZnO
catalysts
demonstrate
excellent
degradation
efficiency
(97.7
%)
within
just
85
min
due
its
effective
adsorption
light
driven
photocatalytic
activity
rhodamine
B
(RhB)
dye.
capacity
∼
24
times
higher
with
second
order
kinetic
rate
constant
as
low
0.0014
∙
g/mg
9
faster
when
compared
unmodified
catalyst.
Effect
catalyst
dosages
RhB
also
conducted.
scavenger
test
firmly
evidenced
that
super
radicals
(•O2–)
play
lead
role
dye
process
nanocomposites.
Reusability
studies
more
than
91
%
up
4
back-to-back
cycles
along
retaining
crystal
structure.
These
findings
suggest
viable
application
for
wastewater.
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
We
introduce
high-entropy
single-atom
catalysts
(HESACs)
from
FeRuPtNiCoPd
HEA
on
GO
via
pulsed
laser
irradiation
in
liquids.
Synergistic
interactions
and
rapid
Fe
2+
photoreduction
enhance
active
sites,
achieving
superior
overall
water
splitting.
