ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
4(4), P. 1590 - 1600
Published: Feb. 14, 2024
Hierarchically
porous
photocatalysts
exhibit
superior
light-harvesting
capacity
and
enhanced
photocatalytic
activity.
In
this
work,
a
facile
method
by
combining
additive
manufacturing
(AM)
dealloying
was
employed
to
prepare
hierarchically
photocatalyst,
namely,
nanoporous-TiO2-encapsulating
macroporous-double-gyroid-structure
photocatalyst
(TiO2@DGS).
It
found
that
TiO2@DGS
possessed
deterministic
macropores
interconnected
nanopores,
which
offered
efficient
mass
transfer
channels
abundant
active
sites,
respectively.
Thus,
showed
excellent
capability
under
ultraviolet–visible
(UV–vis)
light
irradiation
achieved
tetracycline
degradation
efficiency
of
over
90%
within
60
min
(photocatalytic
rate
constant
k
=
4.0
×
10–2
min–1).
Furthermore,
exhibited
durability
reusability
due
its
stable
three-dimensional
structures.
This
work
not
only
exemplifies
the
high
performance
prepared
for
environmental
remediation
but
also
provides
an
innovative
approach
introduce
tailored
macrostructures
into
through
incorporation
AM
dealloying.
EcoEnergy,
Journal Year:
2023,
Volume and Issue:
1(2), P. 248 - 295
Published: Dec. 1, 2023
Abstract
In
the
advancing
world
of
graphene,
highly
anisotropic
2D
semiconductor
nanosheets,
notable
for
their
nanometer‐scale
thickness,
have
emerged
as
a
leading
innovation,
displaying
immense
potential
in
exploration
renewable
and
clean
energy
production.
These
garnered
significant
attention
from
researchers.
The
nanosheets
are
marked
by
extraordinary
electronic,
optical,
chemical
attributes,
positioning
them
attractive
foundational
components
heterogeneous
photocatalysts.
This
review
diligently
summarizes
both
seminal
work
ongoing
developments
pertaining
to
application
solar
within
context
photocatalysis.
We
begin
detailing
distinctive
properties
concentrating
on
pivotal
roles
augmenting
photocatalytic
efficiency,
explaining
intrinsic
mechanisms
that
govern
migration
rate
photogenerated
carriers
material's
surface.
Subsequently,
we
delineate
methods
employed
synthesize
typical
nanosheets.
alignment
with
overarching
objective
expanding
light
absorption
capacity
accelerating
charge
transfer,
also
examine
current
research
hybridization
techniques
involving
materials
varied
dimensions,
well
deployment
diverse
applications.
conclude
identifying
promising
avenues
challenges
await
further
this
burgeoning
field.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(18)
Published: Jan. 31, 2024
Abstract
Heteroatom
doping
can
tune
the
band
structure
of
semiconductors
and
enhance
their
carrier
transfer
capacity
for
improving
performance
photoelectrochemical
water
oxidation.
Nevertheless,
introduction
dopants
is
not
always
beneficial.
In
this
study,
magnesium
(Mg)
adopted
to
dope
ZnIn
2
S
4
nanosheet
array
photoanodes
form
a
type‐II
reduce
bulk
recombination,
but
concurrently
introduced
deleterious
oxygen
(O)
defects
slow
down
surface
catalytic
reaction
kinetics.
Furthermore,
facile
heat
treatment
strategy
proposed
transform
these
O
into
Mg─O
bonds.
First‐principles
calculations
electrochemical
characterization
indicate
that
presence
bonds
provides
abundant
active
sites
efficiently
accelerates
evolution
by
precisely
realigning
rate‐determining
step
from
OH*
O*
(step
2)
OOH*
4),
thereby
retarding
charge
trapping
recombination.
As
result,
such
photoanode
achieves
remarkable
with
photocurrent
as
high
4.91
mA
cm
−2
at
1.23
V
versus
reversible
hydrogen
electrode,
onset
potential
shifts
negatively
about
340
mV.
This
work
new
defect
modulation
idea
converting
detrimental
favorable
ones,
it
be
expected
have
wide
applications
in
fields
energy,
catalysis,
optoelectronics,
etc.
