Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(21)
Published: March 23, 2023
Hydrogen
peroxide
(H2
O2
)
is
an
indispensable
basic
reagent
in
various
industries,
such
as
textile
bleach,
chemical
synthesis,
and
environmental
protection.
However,
it
challenging
to
prepare
H2
a
green,
safe,
simple
efficient
way
under
ambient
conditions.
Here,
we
found
that
could
be
synthesized
using
catalytic
pathway
only
by
contact
charging
two-phase
interface
at
room
temperature
normal
pressure.
Particularly,
the
action
of
mechanical
force,
electron
transfer
occurs
during
physical
between
polytetrafluoroethylene
particles
deionized
water/O2
interfaces,
inducing
generation
reactive
free
radicals
(⋅OH
⋅O2-
),
react
form
,
yielding
high
313
μmol
L-1
h-1
.
In
addition,
new
reaction
device
show
long-term
stable
production.
This
work
provides
novel
method
for
preparation
which
may
also
stimulate
further
explorations
on
contact-electrification-induced
chemistry
process.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(23)
Published: Feb. 8, 2022
Abstract
The
hydrogen
peroxide
(H
2
O
)
generation
via
the
electrochemical
oxygen
reduction
reaction
(ORR)
under
ambient
conditions
is
emerging
as
an
alternative
and
green
strategy
to
traditional
energy‐intensive
anthraquinone
process
unsafe
direct
synthesis
using
H
.
It
enables
on‐site
decentralized
production
air
renewable
electricity
for
various
applications.
Currently,
atomically
dispersed
single
metal
site
catalysts
have
emerged
most
promising
platinum
group
(PGM)‐free
electrocatalysts
ORR.
Further
tuning
their
central
sites,
coordination
environments,
local
structures
can
be
highly
active
selective
2e
−
Herein,
recent
methodologies
achievements
on
developing
are
summarized.
Combined
with
theoretical
computation
advanced
characterization,
a
structure–property
correlation
guide
rational
catalyst
design
favorable
ORR
aimed
provide.
Due
oxidative
nature
of
derived
free
radicals,
stability
effective
solutions
improve
tolerance
emphasized.
Transferring
intrinsic
properties
electrode
performance
viable
applications
always
remains
grand
challenge.
key
metrics
knowledge
during
electrolyzer
development
are,
therefore,
highlighted.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(7), P. 2907 - 2917
Published: Feb. 7, 2023
The
heterogeneous
electro-Fenton
(hetero-e-Fenton)-coupled
electrocatalytic
oxygen
reduction
reaction
(ORR)
is
regarded
as
a
promising
strategy
for
·OH
production
by
simultaneously
driving
two-electron
ORR
toward
H2O2
and
stepped
activating
the
as-generated
to
·OH.
However,
high-efficiency
electrogeneration
of
remains
challengeable,
it
difficult
synchronously
obtain
efficient
catalysis
both
steps
above
on
one
catalytic
site.
In
this
work,
we
propose
dual-atomic-site
catalyst
(CoFe
DAC)
cooperatively
catalyze
electrogeneration,
where
atomically
dispersed
Co
sites
are
assigned
enhance
O2
intermediates
Fe
responsible
activation
CoFe
DAC
delivers
higher
rate
2.4
mmol
L-1
min-1
gcat-1
than
single-site
Co-NC
(0.8
gcat-1)
Fe-NC
(1.0
gcat-1).
Significantly,
hetero-e-Fenton
process
demonstrated
be
more
energy-efficient
actual
coking
wastewater
treatment
with
an
energy
consumption
19.0
kWh
kg-1
COD-1
other
electrochemical
technologies
that
reported
values
29.7∼68.0
kW
h
COD-1.
This
study
shows
attractive
advantages
efficiency
sustainability
which
should
have
fresh
inspiration
development
new-generation
technology.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(52)
Published: March 25, 2022
Abstract
Electrocatalysts
are
the
core
components
of
many
sustainable
energy
conversion
technologies
that
considered
most
potential
solution
to
worldwide
and
environmental
crises.
The
reliability
structure
composition
pledges
electrocatalysts
can
achieve
predictable
stable
performance.
However,
during
electrochemical
reaction,
influenced
directly
by
applied
potential,
electrolyte,
adsorption/desorption
reactive
species,
triggering
structural
compositional
corrosion,
which
affects
catalytic
behaviors
(performance
degradation
or
enhancement)
invalidates
established
structure–activity
relationship.
Therefore,
it
is
necessary
elucidate
corrosion
behavior
mechanism
formulate
targeted
corrosion‐resistant
strategies
use
reconstruction
synthesis
techniques
guide
preparation
efficient
electrocatalysts.
Herein,
recent
developments
in
electrocatalyst
chemistry
outlined,
including
mechanisms,
mitigation
strategies,
syntheses/reconstructions
based
on
typical
materials
important
electrocatalytic
reactions.
Finally,
opportunities
challenges
also
proposed
foresee
possible
development
this
field.
It
believed
contribution
will
raise
more
awareness
regarding
nanomaterial
beyond.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(32)
Published: June 23, 2022
Developing
advanced
electrocatalysts
with
exceptional
two
electron
(2e-
)
selectivity,
activity,
and
stability
is
crucial
for
driving
the
oxygen
reduction
reaction
(ORR)
to
produce
hydrogen
peroxide
(H2
O2
).
Herein,
a
composition
engineering
strategy
proposed
flexibly
regulate
intrinsic
activity
of
amorphous
nickel
boride
nanoarchitectures
efficient
2e-
ORR
by
oriented
Ni2+
different
amounts
BH4-
.
Among
borides,
NiB2
delivers
selectivity
close
99%
at
0.4
V
over
93%
in
wide
potential
range,
together
negligible
decay
under
prolonged
time.
Notably,
an
ultrahigh
H2
production
rate
4.753
mol
gcat-1
h-1
achieved
upon
assembling
practical
gas
diffusion
electrode.
The
combination
X-ray
absorption
situ
Raman
spectroscopy,
as
well
transient
photovoltage
measurements
density
functional
theory,
unequivocally
reveal
that
atomic
ratio
between
Ni
B
induces
local
electronic
structure
diversity,
allowing
optimization
adsorption
energy
toward
*OOH
reducing
interfacial
charge-transfer
kinetics
preserve
OO
bond.
