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.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: May 9, 2023
Abstract
An
environmentally
benign,
sustainable,
and
cost-effective
supply
of
H
2
O
as
a
rapidly
expanding
consumption
raw
material
is
highly
desired
for
chemical
industries,
medical
treatment,
household
disinfection.
The
electrocatalytic
production
route
via
electrochemical
oxygen
reduction
reaction
(ORR)
offers
sustainable
avenue
the
on-site
from
O.
most
crucial
innovative
part
such
technology
lies
in
availability
suitable
electrocatalysts
that
promote
two-electron
(2e
–
)
ORR.
In
recent
years,
tremendous
progress
has
been
achieved
designing
efficient,
robust,
catalyst
materials,
including
noble
metals
their
alloys,
metal-free
carbon-based
single-atom
catalysts,
molecular
catalysts.
Meanwhile,
cell
designs
have
significantly
advanced
applications
at
industrial
level.
This
review
summarizes
fundamental
basics
advances
2e
-ORR,
design,
mechanistic
explorations,
theoretical
computations,
experimental
evaluations,
designs.
Perspectives
on
addressing
remaining
challenges
are
also
presented
with
an
emphasis
large-scale
synthesis
route.
Nano-Micro Letters,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: March 28, 2023
Hydrogen
peroxide
(H2O2)
is
a
high-demand
organic
chemical
reagent
and
has
been
widely
used
in
various
modern
industrial
applications.
Currently,
the
prominent
method
for
preparation
of
H2O2
anthraquinone
oxidation.
Unfortunately,
it
not
conducive
to
economic
sustainable
development
since
complex
process
involves
unfriendly
environment
potential
hazards.
In
this
context,
numerous
approaches
have
developed
synthesize
H2O2.
Among
them,
photo/electro-catalytic
ones
are
considered
as
two
most
promising
manners
on-site
synthesis
These
alternatives
that
only
water
or
O2
required.
Namely,
oxidation
(WOR)
oxygen
reduction
(ORR)
reactions
can
be
further
coupled
with
clean
energy.
For
generation,
design
catalysts
extremely
important
extensively
conducted
an
aim
obtain
ultimate
catalytic
performance.
This
article
overviews
basic
principles
WOR
ORR,
followed
by
summary
recent
progresses
achievements
on
performance
photo/electro-catalysts
generation.
The
related
mechanisms
these
highlighted
from
theoretical
experimental
aspects.
Scientific
challenges
opportunities
engineering
generation
also
outlined
discussed.
Small,
Journal Year:
2023,
Volume and Issue:
19(43)
Published: June 27, 2023
The
development
of
cost-effective
and
reliable
metal-free
carbon-based
electrocatalysts
has
gained
significant
attention
for
electrochemical
hydrogen
peroxide
(H2
O2
)
generation
through
a
two-electron
oxygen
reduction
reaction.
In
this
study,
scalable
solvent
engineering
strategy
is
employed
to
fabricate
oxygen-doped
carbon
dots
(O-CDs)
that
exhibit
excellent
performance
as
electrocatalysts.
By
adjusting
the
ratio
ethanol
acetone
solvents
during
synthesis,
surface
electronic
structure
resulting
O-CDs
can
be
systematically
tuned.
amount
edge
active
CO
group
was
strongly
correlated
with
selectivity
activity
O-CDs.
optimum
O-CDs-3
exhibited
extraordinary
H2
up
96.55%
(n
=
2.06)
at
0.65
V
(vs
RHE)
achieved
remarkably
low
Tafel
plot
64.8
mV
dec-1
.
Furthermore,
realistic
productivity
yield
flow
cell
measured
high
111.18
mg
h-1
cm-2
duration
10
h.
findings
highlight
potential
universal
approach
enabling
electrocatalytic
materials
improved
performance.
Further
studies
will
undertaken
explore
practical
implications
advancing
field
electrocatalysis.
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.
