Advanced Materials,
Год журнала:
2024,
Номер
36(25)
Опубликована: Март 8, 2024
Abstract
Non‐noble
transition
metal
(TM)‐based
compounds
have
recently
become
a
focal
point
of
extensive
research
interest
as
electrocatalysts
for
the
two
electron
oxygen
reduction
(2e
−
ORR)
process.
To
efficiently
drive
this
reaction,
these
TM‐based
must
bear
unique
physiochemical
properties,
which
are
strongly
dependent
on
their
phase
structures.
Consequently,
adopting
engineering
strategies
toward
structure
has
emerged
cutting‐edge
scientific
pursuit,
crucial
achieving
high
activity,
selectivity,
and
stability
in
electrocatalytic
This
comprehensive
review
addresses
intricate
field
applied
to
non‐noble
2e
ORR.
First,
connotation
fundamental
concepts
related
kinetics
thermodynamics
succinctly
elucidated.
Subsequently,
focus
shifts
detailed
discussion
various
approaches,
including
elemental
doping,
defect
creation,
heterostructure
construction,
coordination
tuning,
crystalline
design,
polymorphic
transformation
boost
or
revive
ORR
performance
(selectivity,
stability)
catalysts,
accompanied
by
an
insightful
exploration
phase‐performance
correlation.
Finally,
proposes
fresh
perspectives
current
challenges
opportunities
burgeoning
field,
together
with
several
critical
directions
future
development
electrocatalysts.
Chemical Science,
Год журнала:
2024,
Номер
15(36), С. 14585 - 14607
Опубликована: Янв. 1, 2024
The
development
of
high-efficiency
atomic-level
catalysts
for
energy-conversion
and
-storage
technologies
is
crucial
to
address
energy
shortages.
spin
states
diatomic
(DACs)
are
closely
tied
their
catalytic
activity.
Adjusting
the
DACs'
active
centers
can
directly
modify
occupancy
d-orbitals,
thereby
influencing
bonding
strength
between
metal
sites
intermediates
as
well
transfer
during
electro
reactions.
Herein,
we
discuss
various
techniques
characterizing
atomic
strategies
modulating
center
states.
Next,
outline
recent
progress
in
study
effects
DACs
oxygen
reduction
reaction
(ORR),
evolution
(OER),
hydrogen
(HER),
electrocatalytic
nitrogen/nitrate
(eNRR/NO
Abstract
Hydrogen
peroxide
(H
2
O
)
is
a
highly
value‐added
and
environmental‐friendly
chemical
with
various
applications.
The
production
of
H
by
electrocatalytic
2e
−
oxygen
reduction
reaction
(ORR)
has
emerged
as
promising
alternative
to
the
energy‐intensive
anthraquinone
process.
High
selectivity
Catalysts
combining
superior
activity
are
critical
for
efficient
electrosynthesis
.
Earth‐abundant
transition
metal
selenides
(TMSs)
being
discovered
classic
stable,
low‐cost,
active
selective
catalysts
electrochemical
ORR.
These
features
come
from
relatively
large
atomic
radius
selenium
element,
metal‐like
properties
abundant
reserves.
Moreover,
compared
advanced
noble
or
single‐atom
catalysts,
kinetic
current
density
TMSs
generation
higher
in
acidic
solution,
which
enable
them
become
suitable
catalyst
candidates.
Herein,
recent
progress
ORR
systematically
reviewed.
effects
electrocatalysts
on
activity,
stability
summarized.
It
intended
provide
an
insight
design
corresponding
mechanisms
device
setup,
discuss
relationship
between
structure
activity.
ACS Catalysis,
Год журнала:
2024,
Номер
14(9), С. 6369 - 6403
Опубликована: Апрель 11, 2024
Hydrogen
peroxide
is
a
crucial
commodity
with
wide
range
of
applications
in
variety
industrial
processes,
including
disinfection
and
water
treatment.
With
the
neologism
green
H2O2,
we
can
classify
hydrogen
produced
by
oxygen
reduction
or
oxidation
making
use
electricity
obtained
from
renewable
sources
without
emitting
carbon
dioxide
into
atmosphere.
The
production
environmentally
friendly
H2O2
through
reduction,
even
more
so
oxidation,
currently
impeded
slow
advancement
efficient
electrocatalysts,
along
lack
suitable
reactors.
Nonetheless,
realization
producing
within
reach.
In
this
regard,
review
paper
aims
to
evaluate
resume
not
only
existing
literature
considering
synthetic
procedures
performances
different
electrocatalysts
but
also
put
order
clarify
aspects
relating
mechanism
role
active
sites
various
functional
materials
proposed
(both
as
model
system
scalable
one),
while
highlighting
good
practices
for
correct
electrochemical
screening
thus
obtaining
reliable
performance
parameters.
Hence,
comprehensive
evaluation
catalysts,
those
based
on
noble
metals,
noble-metal-free,
metal-free
presented
critically
discussed.
This
encompasses
activity
selectivity
considers
sustainability
perspective.
A
thorough
assessment
methods
techniques
detection
quantification
conducted,
particular
attention
understanding
applications:
transitioning
qualitative
quantitative
analysis
involves
employing
unravel
synthesis
utilizing
capable
identifying
quantifying
environmental
biomedical
ones.
emphasis
potential
cross-contamination
between
fields
that,
although
distinct
their
aspects,
may
involve
H2O2.
Furthermore,
an
effort
made
emphasize
technological
advancements
outline
expectations
development
electrolyzers,
taking
consideration
factors,
rate
conversion,
accumulation,
operating
voltage.
Nanomaterials,
Год журнала:
2025,
Номер
15(4), С. 256 - 256
Опубликована: Фев. 8, 2025
This
review
explores
the
recent
advancements
in
catalyst
technology
for
hydrogen
production,
emphasizing
role
of
catalysts
efficient
and
sustainable
generation.
involves
a
comprehensive
analysis
various
materials,
including
noble
metals,
transition
carbon-based
nanomaterials,
metal–organic
frameworks,
along
with
their
mechanisms
performance
outcomes.
Major
findings
reveal
that
while
metal
catalysts,
such
as
platinum
iridium,
exhibit
exceptional
activity,
high
cost
scarcity
necessitate
exploration
alternative
materials.
Transition
single-atom
have
emerged
promising
substitutes,
demonstrating
potential
enhancing
catalytic
efficiency
stability.
These
underscore
importance
interdisciplinary
approaches
to
design,
which
can
lead
scalable
economically
viable
production
systems.
The
concludes
ongoing
research
should
focus
on
addressing
challenges
related
stability,
scalability,
integration
renewable
energy
sources,
paving
way
economy.
By
fostering
innovation
development,
this
work
aims
contribute
towards
cleaner
solutions
more
resilient
future.
Chemical Communications,
Год журнала:
2024,
Номер
60(40), С. 5232 - 5244
Опубликована: Янв. 1, 2024
This
review
provides
an
electrosynthesis
strategy
of
H
2
O
via
the
2e
−
ORR,
covering
aspects
reaction
mechanisms,
performance
assessment,
catalyst
engineering,
and
setups
for
scaling
up
production.
ACS Applied Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 3, 2025
Oxygen
reduction
reaction
(ORR),
a
key
process
in
sustainable
energy
conversion,
utilizing
perovskite
catalyst
to
achieve
higher
currents
at
lower
overpotentials
along
with
the
production
of
value-added
product
hydrogen
peroxide
(H2O2),
serves
dual
functionality
both
and
green
route
for
H2O2
generation.
Here,
we
report
synthesis
highly
efficient
double
La2NiMnO6
(LNMO),
achieved
through
incorporation
two
transition
metals,
Ni
Mn,
structure,
explore
its
activity
ORR.
During
ORR
rotation
rate
1600
rpm
1.0
M
NaOH,
LNMO
exhibits
an
onset
potential
0.75
V
(corresponding
current
density
0.1
mA
cm–2)
Tafel
slope
95
mV
dec–1,
achieving
over
88%
selectivity
73%
faradaic
efficiency
across
wide
range
0.2–0.6
vs
RHE.
Characterization
techniques
including
OCP,
EIS,
ICP-OES,
XRD,
XPS,
FE-SEM,
FTIR
confirmed
successful
preparation
catalytic
activity.
The
kinetic
investigation
unveiled
by
transfer
coefficient
(α)
demonstrated
that
on
surface
followed
stepwise
mechanism,
involving
overall
irreversible
electron
steps,
where
first
was
rate-determining
step.
analyses
further
revealed
diffusion-limited
accompanied
first-order
kinetics
standard
constant
(k0)
3.97
×
10–3
cm
s–1
formal
(E0)
value
0.96
Finally,
stability
test
via
chronoamperometry
showed
outperformed
Pt/C
catalyst.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 12, 2025
The
electrocatalytic
conversion
of
oxygen
to
hydrogen
peroxide
offers
a
promising
pathway
for
sustainable
energy
production.
However,
the
development
catalysts
that
are
highly
active,
stable,
and
cost-effective
synthesis
remains
significant
challenge.
In
this
study,
novel
polyacid–based
metal–organic
coordination
compound
(Cu–PW)
was
synthesized
using
hydrothermal
approach.
Cu–PW
served
as
precursor
construct
composite
electrocatalyst
featuring
heterointerface
between
CuWO4
WO3
(CuWO4/WO3)
through
pyrolysis.
CuWO4/WO3
heterojunction
exhibits
an
impressive
H2O2
selectivity
91.84%
at
0.5
V,
marking
19.65%
improvement
compared
pristine
Cu–PW.
Furthermore,
catalyst
demonstrates
exceptional
stability,
maintaining
continuous
operation
29
h.
At
0.1
it
delivers
yield
1537.8
mmol
g–1
h–1,
with
Faraday
efficiency
(FE)
85%.
Additionally,
effectively
degrades
methyl
blue,
achieving
95%
removal
from
aqueous
system
within
30
min.
Theoretical
analysis
further
corroborates
high
electroactivity
structure.
Cu–O–W
bridge
formed
during
reaction
facilitates
interfacial
electron
transport
enhances
role
W–O
bond
in
proton
adsorption
transfer
kinetics.
This
strong
coupling
promotes
formation
*OOH
intermediates,
thereby
favoring
generation.
Hence,
as-prepared
great
potential
efficient
green
peroxide,
exhibiting
two-electron
reduction
catalyst.
work
new
approach
fabricating
selectivity,
paving
way
production,
significantly
reducing
reliance
on
conventional
anthraquinone
process.
