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.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 10, 2024
Abstract
Covalent
organic
frameworks
(COFs)
attract
significant
attention
due
to
their
ordered,
crystalline,
porous,
metal‐free,
and
predictable
structures.
These
unique
characteristics
offer
great
opportunities
for
the
diffusion
transmission
of
photogenerated
charges
during
photocatalysis.
Currently,
a
considerable
number
COFs
are
used
as
metal‐free
semiconductor
photocatalysts.
This
review
aims
understand
relationships
between
structure
photocatalysis
performance
provides
in‐depth
insight
into
synthetic
strategy
improve
performance.
Subsequently,
focuses
on
structural
motif
in
sustainable
photocatalytic
hydrogen
evolution,
carbon
dioxide
reduction,
peroxide
generation,
compound
transformations.
Last,
conjunction
with
progress
achieved
challenges
yet
be
overcome,
candid
discussion
is
undertaken
regarding
field
COF
photocatalysis,
accompanied
by
presentation
potential
research
avenues
future
directions.
seeks
provide
readers
comprehensive
understanding
pivotal
role
robust
guidance
innovative
utilization
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(15)
Published: Feb. 15, 2024
Abstract
Photocatalytic
oxygen
reductive
H
2
O
production
is
a
promising
approach
to
alternative
industrial
anthraquinone
processes
while
suffering
from
the
requirement
of
pure
feedstock
for
practical
application.
Herein,
we
report
spaced
double
hydrogen
bond
(IC−H‐bond)
through
multi‐component
Radziszewski
reaction
in
an
imidazole
poly‐ionic‐liquid
composite
(SI‐PIL‐TiO
)
and
levofloxacin
hydrochloride
(LEV)
electron
donor
highly
efficient
selective
photocatalytic
air
production.
It
found
that
IC−H‐bond
formed
by
imino
(−NH−)
group
SI‐PIL‐TiO
carbonyl
(−C=O)
LEV
can
switch
active
sites
characteristic
covered
state
fully
exposed
one
shield
strong
adsorption
N
air,
propel
intenser
positive
potential
more
orbitals
binding
patterns
surface
establish
competitive
selectivity
chemisorption.
Moreover,
high
enrichment
as
site
2e
−
reduction
ensures
rapid
.
Therefore,
enables
total
utilization
conversion
efficiency
94.8
%
direct
reduction,
achieving
rate
1518
μmol/g/h
16
23
times
compared
without
groups
(PIL‐TiO
TiO
,
respectively.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(16)
Published: Feb. 21, 2024
Binding
water
molecules
to
polar
sites
in
covalent
organic
frameworks
(COFs)
is
inevitable,
but
the
corresponding
solvent
effects
electrocatalytic
process
have
been
largely
overlooked.
Herein,
we
investigate
on
COFs
for
catalyzing
oxygen
reduction
reaction
(ORR).
Our
designed
incorporated
different
kinds
of
nitrogen
atoms
(imine
N,
pyridine
and
phenazine
N),
enabling
tunable
interactions
with
molecules.
These
play
a
crucial
role
modulating
electronic
states
altering
catalytic
centers
within
COFs.
Among
synthesized
COFs,
one
N
exhibits
highest
activity,
characterized
by
half-wave
potential
0.78
V
mass
activity
0.32
A
mg
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(14), P. 4907 - 4928
Published: Jan. 1, 2024
Recent
studies
on
enhancing
charge
carrier
behavior
through
electric
effects
for
efficient
photocatalysis
are
summarized,
evaluating
the
in-depth
function
of
these
effects.
This
provides
unique
perspectives
to
optimize
photocatalytic
processes.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Aug. 27, 2024
Owing
to
their
capability
produce
reactive
oxygen
species
(ROS)
under
solar
irradiation,
covalent
organic
frameworks
(COFs)
with
pre-designable
structure
and
unique
architectures
show
great
potentials
for
water
purification.
However,
the
sluggish
charge
separation,
inefficient
activation
poor
stability
in
COFs
restrict
practical
applications
decontaminate
water.
Herein,
via
a
facile
one-pot
synthetic
strategy,
we
direct
conversion
of
reversible
imine
linkage
into
rigid
thiazole
can
adjust
π-conjugation
local
polarization
skeleton
boost
exciton
dissociation
on
COFs.
The
also
improve
robustness
during
consecutive
utilization
process.
More
importantly,
optimal
C
2p
states
(COF-S)
effectively
increases
activities
neighboring
benzene
unit
directly
modulate
O2-adsorption
energy
barrier
ROS
production
efficiency,
resulting
excellent
photocatalytic
degradation
efficiency
seven
toxic
emerging
contaminants
(e.g.
degrading
~99%
5
mg
L−1
paracetamol
only
7
min)
effective
bacterial/algal
inactivation
performance.
Besides,
COF-S
be
immobilized
continuous-flow
reactor
enlarged
efficiently
eliminate
pollutants
natural
sunlight
demonstrating
feasibility
application.
Linking
by
linkages
simultaneously
enhance
stability,
separation
COFs,
performance
towards
micropollutants
