ChemElectroChem,
Journal Year:
2023,
Volume and Issue:
10(20)
Published: Sept. 28, 2023
Abstract
Electrochemical
processes
use
expensive
noble
metal‐based
anodes
which
limit
industrial
implementation.
In
this
study,
a
noble‐metal‐free
Ti‐6Al‐4V
anode
is
introduced
in
an
advanced
flow
reactor.
We
demonstrate
that
the
3D
additively
manufactured
electrode
can
provide
more
projected
surface
area
and
facilitate
anodic
reactions
under
controlled
electrolyte
conditions.
Alkaline
NaOH
KOH
electrolytes
act
as
are
toxic
compounds‐free
enable
corrosion
control.
Impedance
voltammetry
responses
to
electrochemical
studied.
The
active
of
4
rods
scaffold
geometry
42
times
higher
than
flat
plate
anode.
Therefore,
improved
charge
transfer
achieved
reactor
incorporating
due
increased
wettability.
structure
almost
non‐conductive
passivation
on
changed
unstable
structure.
This
enables
effective
911
mA
cm
−2
at
potentials
up
5
V
for
1.5
m
non‐flow
condition.
Furthermore,
1
solution
delays
metal
ion
dissolution
from
by
acting
corrosion‐controlling
medium.
likely
be
affordable
alternative
alkaline
environmentally
friendly
applications.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(29)
Published: June 15, 2023
Abstract
The
lack
of
highly
efficient
photoanodes
presents
a
significant
challenge
to
implementing
the
promising
strategy
unbiased
solar‐to‐fuel
conversion.
To
achieve
high‐performance
photoanodes,
improving
their
light
harvesting
and
charge
separation/injection
capabilities
is
indispensable.
Herein,
solution‐processed
vertically
oriented
Sb
2
S
3
nanorod
arrays
on
substrate
are
obtained
via
Au
seed
layer,
resulting
in
improved
optoelectronic
properties
(due
scattering
effect)
favorable
crystallographic
orientation
1D
nanostructure.
Moreover,
(NH
4
)
WS
treatment
caps
surface
nanorods
with
an
amorphous
x
layer
passivates
sulfur
vacancy
,
boosted
extraction
reactants.
photoanode
employed
drive
iodide
oxidation
reaction
(IOR),
which
prominent
alternative
sluggish
water
reactions,
exhibiting
high
photocurrent
density
13
mA
cm
−2
at
0.6
V
versus
reversible
hydrogen
electrode.
Subsequently,
unassisted
generation
device
demonstrated
by
combining
array‐based
for
IOR
perovskite‐based
photocathode
evolution
reaction,
achieving
production
current
5.7
without
any
external
bias.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(32)
Published: May 20, 2024
Abstract
The
efficient
electrosynthesis
of
hydrogen
peroxide
(H
2
O
)
via
two‐electron
oxygen
reduction
reaction
(2e
−
ORR)
in
neutral
media
is
undoubtedly
a
practical
route,
but
the
limited
comprehension
electrocatalysts
has
hindered
system
advancement.
Herein,
we
present
design
model
catalysts
comprising
mesoporous
carbon
spheres‐supported
Pd
nanoparticles
for
H
at
near‐zero
overpotential
with
approximately
95
%
selectivity
electrolyte.
Impressively,
optimized
Pd/MCS‐8
electrocatalyst
flow
cell
device
achieves
an
exceptional
yield
15.77
mol
g
catalyst
−1
h
,
generating
solution
accumulated
concentration
6.43
wt
%,
level
sufficiently
high
medical
disinfection.
Finite
element
simulation
and
experimental
results
suggest
that
carriers
promote
enrichment
localized
pH
elevation,
establishing
favorable
microenvironment
2e
ORR
media.
Density
functional
theory
calculations
reveal
robust
interaction
between
adsorption
OOH*
edge,
ensuring
active
process.
These
findings
offer
new
insights
into
carbon‐loaded
media,
emphasizing
role
carrier
engineering
constructing
microenvironments
synergizing
sites.
Advanced Materials Technologies,
Journal Year:
2024,
Volume and Issue:
9(14)
Published: June 12, 2024
Abstract
Catalytic
valveless
micropumps,
and
membraneless
fuel
cells
are
the
class
of
devices
that
utilize
decomposition
hydrogen
peroxide
(H
2
O
)
into
water
oxygen.
Nonetheless,
a
significant
obstacle
endures
within
discipline
pertains
to
pragmatic
open
circuit
potential
(OCP)
FCs
FCs),
which
fails
meet
theoretical
OCP.
Additionally,
bubble
formation
significantly
contributes
this
disparity,
as
it
disrupts
electrolyte's
uniformity
interferes
with
reaction
dynamics.
In
addition,
issues
such
catalyst
degradation
poor
kinetics
can
impact
overall
cell
efficiency.
The
development
high‐performance
H
‐FCs
necessitates
incorporation
selective
electrocatalysts
high
surface
area.
However,
porous
micro‐structures
electrode
impedes
transport
removal
byproducts,
thereby
hindering
attainment
technologically
rates.
To
address
these
challenges,
including
formation,
review
highlights
integrating
electrokinetic
bubble‐driven
micropumps.
An
alternative
approach
involves
spatiotemporal
separation
oxidizer
through
use
laminar
flow‐based
(LFFC).
present
addresses
multifaceted
challenges
‐powered
FCs,
proposes
integration
emphasizing
critical
role
management
in
improving
H2O2
FC
performance.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Abstract
The
electrochemical
two‐electron
oxygen
reduction
reaction
(2e
−
ORR)
offers
a
compelling
alternative
for
decentralized
and
on‐site
H
2
O
production
compared
to
the
conventional
anthraquinone
process.
To
advance
this
electrosynthesis
system,
there
is
growing
interest
in
optimizing
interfacial
microenvironment
boost
electrocatalytic
performance.
This
review
consolidates
recent
advancements
engineering
selective
conversion
of
.
Starting
with
fundamental
insights
into
mechanisms,
an
overview
various
strategies
constructing
favorable
local
environment,
including
adjusting
electrode
wettability,
enhancing
mesoscale
mass
transfer,
elevating
pH,
incorporating
electrolyte
additives,
employing
pulsed
electrocatalysis
techniques
provided.
Alongside
these
regulation
strategies,
corresponding
analyses
technical
remarks
are
also
presented.
Finally,
summary
outlook
on
critical
challenges,
suggesting
future
research
directions
inspire
accelerate
practical
application
delivered.
New Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
48(10), P. 4281 - 4295
Published: Jan. 1, 2024
This
study
reports
a
convenient,
safe
and
recyclable
source
of
anhydrous
H
2
O
for
organic
peroxide
synthesis.
It
is
based
on
the
generation
through
reaction
ZnO
with
SO
4
recycling
from
ZnSO
1
wt%
.
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(10), P. 5869 - 5878
Published: Jan. 1, 2024
The
overpotential
of
each
part
a
flow
cell
reactor
for
H
2
O
electrosynthesis
is
investigated,
and
the
results
indicate
that
cathodic
solution
has
great
contribution.
ChemCatChem,
Journal Year:
2023,
Volume and Issue:
16(2)
Published: Nov. 17, 2023
Abstract
Hydrogen
peroxide
(H
2
O
)
has
emerged
as
a
versatile
and
environmentally
friendly
oxidant,
showing
wide
applications
in
diverse
sectors
such
fine
chemical
synthesis,
waste
stream
treatment,
precious
metal
extraction,
textile
bleaching.
With
an
escalating
demand,
H
now
become
one
of
the
most
essential
chemicals
worldwide.
Efficient
photocatalytic
generation
from
water
O)
oxygen
(O
been
long‐standing
challenge,
presenting
promising
prospect
to
replace
existing
production
methods.
This
review
presents
framework
aimed
at
achieving
highly
efficient
continuous
via
photocatalysis.
The
key
aspects
include
photocatalyst
design,
selectivity
for
redox
reactions,
stability
issue
reactor
design.
Through
comprehensive
inspection
comparison
state‐of‐the‐art
research,
viable
pathways
photogeneration
are
identified,
ensuring
optimal
solar‐to‐fuel
conversion
efficiency
high
target
products.
ultimate
goal
is
establish
sustainable
method
producing
this
valuable
chemical,
contributing
greener
more
future.
