Advanced Functional Materials,
Год журнала:
2023,
Номер
33(11)
Опубликована: Янв. 4, 2023
Abstract
Electrochemical
reduction
of
CO
2
(CO
RR)
and
nitrogen
(NRR)
constitute
alternatives
to
fossil
fuel‐based
technologies
for
the
production
high‐value‐added
chemicals.
Yet
their
practical
application
is
still
hampered
by
low
energy
Faradaic
efficiencies
although
numerous
efforts
have
been
paid
overcome
fatal
shortcomings.
To
date,
most
studies
focused
on
designing
developing
advanced
electrocatalysts,
while
understanding
electrolyte,
which
would
significantly
influence
reaction
microenvironment,
are
not
enough
provide
insight
construct
highly
active
selective
electrochemical
systems.
Here,
a
comprehensive
review
different
electrolytes
participating
in
RR
NRR
provided,
including
acidic,
neutral,
alkaline,
water‐in‐salt
electrolyte
as
aqueous
electrolytes,
well
organic
ionic‐liquids
mixture
two
non‐aqueous
electrolytes.
Through
discussion
roles
these
various
it
aimed
grasp
essential
function
during
process
how
functions
can
be
used
design
parameters
improving
electrocatalytic
performance.
Finally,
priorities
future
suggested
support
in‐depth
effects
thus
guide
efficient
selection
next‐generation
gas‐involving
reactions.
Nano Letters,
Год журнала:
2023,
Номер
23(5), С. 1735 - 1742
Опубликована: Фев. 14, 2023
We
design
single-atom
W
confined
in
MoO3-x
amorphous
nanosheets
(W1/MoO3-x)
comprising
W1-O5
motifs
as
a
highly
active
and
durable
NORR
catalyst.
Theoretical
operando
spectroscopic
investigations
reveal
the
dual
functions
of
to
(1)
facilitate
activation
protonation
NO
molecules
(2)
promote
H2O
dissociation
while
suppressing
*H
dimerization
increase
proton
supply,
eventually
resulting
self-tandem
mechanism
W1/MoO3-x
greatly
accelerate
energetics
NO-to-NH3
pathway.
As
result,
exhibits
highest
NH3-Faradaic
efficiency
91.2%
NH3
yield
rate
308.6
μmol
h-1
cm-2,
surpassing
that
most
previously
reported
catalysts.
iScience,
Год журнала:
2023,
Номер
26(7), С. 107100 - 107100
Опубликована: Июнь 16, 2023
Electrochemical
reduction
of
nitrite
(NO2-)
can
satisfy
the
necessity
for
NO2-
contaminant
removal
and
deliver
a
sustainable
pathway
ammonia
(NH3)
generation.
Its
practical
application
yet
requires
highly
efficient
electrocatalysts
to
boost
NH3
yield
Faradaic
efficiency
(FE).
In
this
study,
CoP
nanoparticle-decorated
TiO2
nanoribbon
array
on
Ti
plate
(CoP@TiO2/TP)
is
verified
as
high-efficiency
electrocatalyst
selective
NH3.
When
measured
in
0.1
M
NaOH
with
NO2-,
freestanding
CoP@TiO2/TP
electrode
delivers
large
849.57
μmol
h-1
cm-2
high
FE
97.01%
good
stability.
Remarkably,
subsequently
fabricated
Zn-NO2-
battery
achieves
power
density
1.24
mW
while
delivering
714.40
μg
cm-2.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(36)
Опубликована: Авг. 6, 2023
Abstract
Hydrogen
peroxide
is
an
essential
chemical
that
attracting
strong
attention
for
energy
and
environmental
applications.
However,
the
struggle
between
growing
market
demand
unsustainability
of
conventional
anthraquinone
method
motivates
exploration
alternative
H
2
O
production
processes.
Although
several
new
processes
have
been
proposed,
environmental‐friendly
solar‐driven
attracts
most
because
only
inputs
water,
oxygen,
light
energy.
The
rational
design
functional
photo‐responsive
catalysts
promotes
in
photocatalytic
photoelectrocatalytic
approaches.
These
are,
general,
achieved
by
facilitating
preferential
adsorption
key
intermediates
OOH*/OH*/O*,
enhancing
absorption,
promoting
charge
separation,
accelerating
surface
transfer
with
selective
number
involved
charges.
This
review
systematically
summarizes
strategies
photo(electro)catalysts
toward
via
both
water
oxidation
oxygen
reduction
pathways.
Though
route
perceived
as
more
popular
community,
emerging
a
convincing
alternative.
Furthermore,
prevailing
hypotheses,
state‐of‐the‐art
catalysts,
critical
challenges,
perspectives
are
discussed
depth.
aims
to
enhance
comprehension
this
research
field
promote
interest
sustainable
production.
ACS Applied Nano Materials,
Год журнала:
2022,
Номер
5(10), С. 14246 - 14250
Опубликована: Окт. 5, 2022
Electrochemical
nitrite
(NO2–)
reduction
is
a
promising
approach
for
ambient
ammonia
(NH3)
synthesis
and
simultaneous
mitigation
of
NO2–
contaminant
in
wastewater.
Herein,
we
report
Ni
nanoparticle
supported
on
molasses-derived
carbon
sheets
(Ni@MDC)
as
an
earth-abundant
electrocatalyst
NO2–-to-NH3
conversion.
When
tested
alkaline
solutions
with
0.1
M
NO2–,
such
Ni@MDC
obtains
high
NH3
yield
6.3
mg
h–1
mgcat–1
Faradaic
efficiency
65.4%
at
−0.8
V
versus
reversible
hydrogen
electrode
under
conditions.
Furthermore,
it
shows
remarkable
electrochemical
stability
during
long-term
electrolysis
cycling
tests.
