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:
2023,
Volume and Issue:
13(2), P. 1477 - 1491
Published: Jan. 10, 2023
Cation
modulation
engineering
is
employed
to
tune
the
intrinsic
activity
and
electronic
structure
of
electrocatalysts
for
water
electrolysis.
Here,
we
designed
two-dimensional
cobalt–iron-layered
double-hydroxide
(CoFe-LDH)
ultrathin
nanosheets
by
pulsed
laser
ablation
in
an
aqueous
medium.
The
CoFe-LDH
exhibited
abundant
electrochemically
active
sites
a
large
surface
area.
optimal
Co0.5Fe0.5-LDH
low
overpotential
270
mV
during
half-cell
oxygen
evolution
reactions
(OERs),
whereas
Co0.25Fe0.75-LDH
delivered
365
at
10
mA/cm2
hydrogen
(HERs).
bifunctional
electrocatalyst
outstanding
electrolyzer
performance
cell
voltage
∼1.89
V
admirable
stability
long-run
repetitive
cycles.
synergistic
effect
between
modulated
cations
resulted
better
conductivity,
mass
transfer
facilitated
HER
OER.
We
demonstrated
that
this
facile
approach
can
facilitate
highly
stable
efficient
electrode
renewable
electrochemical
energy
conversion
reactions.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Nov. 1, 2023
Abstract
The
green
methodologies
of
nanoparticles
with
plant
extracts
have
received
an
increase
interest.
Copper
oxide
(CuO
NPs)
been
utilized
in
a
many
applications
the
last
few
decades.
current
study
presents
synthesis
CuO
NPs
aqueous
extract
Morinda
citrifolia
as
stabilizing
agent.
leaf
was
mixed
solution
copper
sulphate
(CuSO
4
·5H
2
O)
and
sodium
hydroxide
catalyst.
UV–visible
spectroscopy,
FTIR,
XRD,
SEM,
TEM,
EDAX
analysis
were
performed
to
synthesized
NPs.
Particle
size
distribution
measured
dynamic
light
scattering.
highly
stable,
sphere-like,
particles
from
20
50
nm.
Furthermore,
as-formed
shown
strong
antibacterial
activity
against
Gram-positive
bacteria
(
Bacillus
subtilis,
Staphylococcus
aureus
),
Gram-negative
Escherichia
coli
).
revealed
similar
trend
analysed
for
antifungal
activity.
zone
inhibition
fungi
evaluated
Aspergillus
flavus
(13.0
±
1.1),
niger
(14.3
0.7),
Penicillium
frequentans
(16.8
1.4).
According
results
this
investigation,
may
be
used
biomedicine
replacement
agent
biological
applications.
Physical Chemistry Chemical Physics,
Journal Year:
2023,
Volume and Issue:
25(29), P. 19380 - 19408
Published: Jan. 1, 2023
This
article
explores
upscaling
productivity
of
laser-generated
nanoparticles
in
liquid
and
its
automatization
for
industrial
applications,
considering
laser
chamber
design,
scanner
technology,
target
properties.
Carbon Energy,
Journal Year:
2024,
Volume and Issue:
6(5)
Published: Jan. 5, 2024
Abstract
We
investigated
the
role
of
metal
atomization
and
solvent
decomposition
into
reductive
species
carbon
clusters
in
phase
formation
transition‐metal
carbides
(TMCs;
namely,
Co
3
C,
Fe
TiC,
MoC)
by
pulsed
laser
ablation
Co,
Fe,
Ti,
Mo
metals
acetone.
The
interaction
between
s
–
p
‐orbitals
d‐orbitals
causes
a
redistribution
valence
structure
through
charge
transfer,
leading
to
surface
defects
as
observed
X‐ray
photoelectron
spectroscopy.
These
influence
evolved
TMCs,
making
them
effective
for
hydrogen
oxygen
evolution
reactions
(HER
OER)
an
alkaline
medium.
C
with
more
affinity
promoted
CoO(OH)
intermediates,
electrochemical
oxidation
O
4
was
captured
via
situ/operando
Raman
probes,
increasing
number
active
sites
OER
activity.
MoC
d‐vacancies
exhibits
strong
binding,
promoting
HER
kinetics,
whereas
TiC
defect
states
trap
carriers
may
hinder
both
activities.
results
show
that
assembled
membrane‐less
electrolyzer
C∥Co
MoC∥MoC
electrodes
requires
~2.01
1.99
V,
respectively,
deliver
10
mA
cm
−
2
excellent
structural
stability.
In
addition,
ascertained
synthesis
mechanism
unit‐cell
packing
relations
will
open
up
sustainable
pathways
obtaining
highly
stable
electrocatalysts
electrolyzers.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(24)
Published: Jan. 17, 2024
Abstract
The
electrochemical
reduction
of
nitrate
to
ammonia
(NO
3
RR)
has
emerged
as
a
promising
but
challenging
orientation
in
sustainable
development.
Cu
is
one
the
most
effective
NO
RR
catalysts.
However,
accumulation
2
−
on
their
surface
erected
bars
further
improvement
efficiency.
Herein,
Cu‐based
electrocatalyst
with
low‐coordinated
atoms
(Cu‐LC)
synthesized
via
instantaneous
ablation
and
rapid
cooling
target
by
pulse
laser
proposed
new
electrocatalyst,
which
exhibits
enhanced
activity
NH
selectivity
97.01%,
yield
rate
0.624
mmol
h
−1
cm
−2
at
−0.8
V
versus
RHE
long‐term
durability,
superior
reported
introduction
sites
upshifts
d‐band
center
near
Fermi
Level,
enhancing
adsorption
key
intermediates
(
*
,
NO)
RR,
also
effectively
regulating
generation
hydrogenation
process,
inhibiting
Cu‐LC
surface,
thus
achieving
efficient
production.
Furthermore,
when
evaluated
cathode
material
Zn–NO
battery,
an
open
circuit
voltage
1.3
power
density
3.1
mW
are
achieved
Cu‐LC‐based
highlighting
multifunctional
system
for
production
energy
supply.
