Catalysts,
Journal Year:
2025,
Volume and Issue:
15(5), P. 500 - 500
Published: May 21, 2025
Hydrogen
peroxide
(H2O2)
is
a
versatile
and
environmentally
friendly
oxidant
with
broad
applications
in
industry,
energy,
environmental
remediation.
Electrocatalytic
H2O2
production
via
the
two-electron
oxygen
reduction
reaction
(2e−
ORR)
has
emerged
as
sustainable
alternative
to
traditional
anthraquinone
processes.
Covalent
organic
frameworks
(COFs),
class
of
crystalline
porous
materials,
exhibit
high
structural
tunability,
large
surface
areas,
chemical
stability,
making
them
promising
electrocatalysts
for
2e−
ORR.
This
review
systematically
summarizes
recent
advances
COF-based
production,
including
both
metal-free
metal-containing
systems.
We
discuss
key
strategies
COF
design—such
dimensional
modulation,
linkage
engineering,
heteroatom
doping,
post-synthetic
modification—and
highlight
their
effects
on
activity,
selectivity,
stability.
Fundamental
insights
into
ORR
mechanism
evaluation
metrics
are
also
provided.
Finally,
we
offer
perspectives
current
challenges
future
directions,
emphasizing
integration
machine
learning,
conductivity
enhancement,
scalable
synthesis
advance
COFs
toward
practical
electrosynthesis.
Electrochimica Acta,
Journal Year:
2023,
Volume and Issue:
456, P. 142383 - 142383
Published: April 10, 2023
A
circular
economy
approach
was
followed
to
convert
biomass
wastes
polluted
with
metals
(obtained
from
phytoremediation
processes)
generate
electroactive
carbon
materials
be
used
in
the
electrochemical
production
of
hydrogen
peroxide.
Carbon
were
pretreated
using
hydrothermal
carbonization
at
200ºC
and
130
g
soil
mL−1
water
post
treated
through
pyrolysis
different
temperatures
(300ºC,
500ºC
1000ºC)
chemical
precursors
as
KOH
or
H3PO4.
These
would
modify
paper
(CP)
cathodes
substitute
commonly
black
(CB),
that
comes
fossil
fuels.
Porosity,
thermochemical
behavior,
electrical
conductivity,
electrocatalytic
response
H2O2
accumulation
tests
evaluated
determine
potential
performance
these
Delays
mass
losses
observed
thermogravimetric
studies
indicate
improvement
thermal
stability
which
are
related
highest
conductivity
(that
correspond
hydrochar
pyrolyzed
1000
ºC).
High
specific
surface
areas
(1097
704
m2/g)
also
found
hydrochars
values
even
superior
commercial
CB.
Results
show
all
activated
present
activity
towards
peroxide
chemically
can
achieve
a
70%
obtained
Moreover,
it
presence
synthesized
may
promote
Fenton-like
reaction,
increasing
by
40%
generation
hydroxyl
radicals
respect
This
paramount
finding
opens
window
for
use
this
waste
produce
sustainable
electrode
upgraded
advanced
oxidation
processes.
Energy & Fuels,
Journal Year:
2023,
Volume and Issue:
37(23), P. 17629 - 17651
Published: Sept. 28, 2023
A
key
oxidizing
agent
for
the
chemical
industry,
wastewater
treatment,
and
semiconductor
development
is
hydrogen
peroxide
(H2O2).
Electrochemical
(EC)
photoelectrochemical
(PEC)
production
of
H2O2
syntheses
have
been
studied
as
promising
alternatives
to
unsustainable
anthraquinone
oxidation
process
H2
O2
direct
gas
synthesis
route.
While
cathodic
reduction
produce
draws
more
extensive
attention
than
anodic
water
due
higher
obtained
indicator
Faraday
efficiency
rate
H2O2,
however,
in
long
term,
using
a
raw
material
desirable
procedure
sustainable
production.
To
inspire
innovative
ideas
boosting
yield
photo/electrocatalysis,
we
review
recent
advancements
EC/PEC
from
experimental
computational
points
view.
The
fundamental
mechanism
process,
rational
design
electrode,
advanced
engineering
strategies
enhancement
via
two-electron
reaction
(2e–
WOR)
are
thoroughly
summarized.
Furthermore,
discuss
hindrances
challenges
2e–
WOR,
including
all
intermediates
competing
routes,
integrate
tandem
device
development,
degradation
issues
better
addressing.
WOR
enables
excellent
rates
with
optimal
efficiency.
