Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(21), P. 2850 - 2850
Published: Oct. 27, 2023
Ammonia
(NH3)
is
widely
used
in
various
fields,
and
it
also
considered
a
promising
carbon
free
energy
carrier,
due
to
its
high
hydrogen
content.
The
nitrogen
reduction
reaction
(NRR),
which
converts
into
ammonia
by
using
protons
from
water
as
the
source,
receiving
lot
of
attention,
since
effective
process
optimization
would
make
possible
overcome
Haber–Bosch
method.
In
this
study,
we
solution-based
approach
obtain
functionalized
porous
Ni
foam
substrates
with
small
amount
gold
(<0.1
mg
cm−1).
We
investigated
several
deposition
conditions
obtained
different
morphologies.
electrochemical
performance
catalysts
on
evolution
(HER)
NRR
has
been
characterized.
production
yield
was
determined
chronoamperometry
experiments
at
potentials,
results
showed
maximum
rate
20
µg
h−1
mgcat−1
Faradaic
efficiency
5.22%.
This
study
demonstrates
potential
gold-based
for
sustainable
highlights
importance
optimizing
improve
selectivity
toward
HER.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Jan. 16, 2024
Abstract
Renewable
energy
driven
N
2
electroreduction
with
air
as
nitrogen
source
holds
great
promise
for
realizing
scalable
green
ammonia
production.
However,
relevant
out-lab
research
is
still
in
its
infancy.
Herein,
a
novel
Sn-based
MXene/MAX
hybrid
abundant
Sn
vacancies,
Sn@Ti
CT
X
/Ti
SnC–V,
was
synthesized
by
controlled
etching
SnC
MAX
phase
and
demonstrated
an
efficient
electrocatalyst
electrocatalytic
reduction.
Due
to
the
synergistic
effect
of
heterostructure,
existence
vacancies
highly
dispersed
active
sites,
obtained
SnC–V
exhibits
optimal
NH
3
yield
28.4
µg
h
−1
mg
cat
excellent
FE
15.57%
at
−
0.4
V
versus
reversible
hydrogen
electrode
0.1
M
Na
SO
4
,
well
ultra-long
durability.
Noticeably,
this
catalyst
represents
satisfactory
rate
10.53
home-made
simulation
device,
where
commercial
electrochemical
photovoltaic
cell
employed
power
source,
ultrapure
water
feed
stock.
The
as-proposed
strategy
potential
toward
production
terms
financial
cost
according
systematic
technical
economic
analysis.
This
work
significance
large-scale
Energy & Fuels,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
With
the
increasing
demand
for
downstream
ammonia
products,
research
on
fuel
has
received
growing
attention.
Therefore,
under
"dual
carbon"
context,
it
is
crucial
to
develop
an
energy-efficient
and
environmentally
friendly
method
synthesis.
Current
indicates
that
electrocatalytic
synthesis
one
of
most
promising
methods.
This
study
systematically
summarizes
three
major
factors
influencing
nitrogen
reduction
reaction
(eNRR)
catalysts
synthesis:
material
optimization,
structural
design,
engineering.
In
terms
materials,
precious-metal-based,
non-precious-metal-based,
metal-free
eNRR
are
classified
listed.
By
examination
properties
catalytic
effects
various
metals
non-metals
in
synthesis,
materials
with
highest
activity
can
be
further
identified.
To
enhance
efficiency,
strategies,
such
as
vacancy
creation,
doping,
interface
engineering,
facet
changes
size
morphology
active
sites,
have
been
summarized.
integration
reactions,
including
microscale
activation,
proton
transfer,
electron
efficiency
was
discussed
depth.
Finally,
urgent
issues
need
addressed
current
were
discussed,
unique
insights
future
development
provided.
review
aims
provide
innovative
ideas
design
improve
rate
selectivity
catalysts.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(37), P. 20234 - 20241
Published: Jan. 1, 2023
The
process
of
electrocatalytic
nitrate
reduction
reaction
(NIRR)
to
produce
ammonia
(NH
3
)
presents
a
promising
solution
the
challenges
contamination
and
high
value
synthesis.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(29), P. 37938 - 37951
Published: July 16, 2024
The
development
of
an
efficient,
selective,
and
durable
catalysis
system
for
the
electrocatalytic
N2
reduction
reaction
(ENRR)
is
a
promising
strategy
sustainable
production
ammonia.
high-performance
ENRR
limited
by
two
major
challenges:
poor
adsorption
over
catalyst
surface
abysmal
solubility
in
aqueous
electrolytes.
Herein,
with
help
our
combined
density
functional
theory
(DFT)
calculations
experimental
electrocatalysis
study,
we
demonstrate
that
concurrently
induced
electron-deficient
Lewis
acid
sites
electrocatalyst
electrolyte
medium
can
significantly
boost
performance.
DFT
calculations,
ex
situ
X-ray
photoelectron
FTIR
spectroscopy,
electrochemical
measurements,
N2-TPD
(temperature-programmed
desorption)
boron-doped
strontium
titanate
(BSTO)
samples
reveal
acid-base
interactions
synergistically
enhance
activation
N2.
Besides,
B-dopant
induces
defect
(oxygen
vacancies
Ti3+)
assist
enhanced
results
suppressed
hydrogen
evolution
due
to
B-induced
H+
adsorption.
insights
from
study
evince
B
prefers
Srtop
position
(on
top
Sr)
where
adsorbs
end-on
configuration,
which
favors
associative
alternating
pathway
suppresses
competitive
evolution.
Thus,
demonstrates
insight
toward
enhancing
performance
along
via
engineered
at
electrode
interfaces.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(41), P. 22466 - 22477
Published: Jan. 1, 2023
The
localized
electrons
of
OVs
on
a
TiO
2−
x
support
are
regulated
by
PdCu
nanoparticles,
leading
to
accelerated
hydrogenation
and
inhibited
N
2
formation;
hence
NPs/TiO
exhibits
superior
NH
3
selectivity
yield.
