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.
Emerging contaminants,
Journal Year:
2024,
Volume and Issue:
10(3), P. 100328 - 100328
Published: March 1, 2024
Residual
enrofloxacin
(ENR)
exposed
in
aqueous
environments
is
challenging
to
the
ecosphere.
In
this
work,
a
layered
double
hydroxide
CoAl-LDH
was
used
activate
common
oxidizing
agent
persulfate
(PS)
for
photodegradation
of
ENR,
and
degradation
pathways
ENR
were
scrutinized
elucidated.
The
results
indicated
that,
under
optimal
conditions
obtained
through
orthogonal
experiments,
even
though
rate
as
high
97.72%,
removal
total
organic
carbon
(TOC)
from
system
only
about
30%.
Eleven
probable
reaction
categorized,
thirty-one
types
intermediates
identified
participating
complex
process.
major
products
P4
(C17H20FN3O3),
P22
(C19H22FN3O4),
P19
(C17H18FN3O3),
which
are
mainly
derived
cleavage
piperazine
groups
quinolone
rings.
Density
functional
theory
(DFT)
calculations
Fukui
index
revealed
that
two
N
atoms
ring
core
reactive
sites
triggering
chains,
sensitive
electrophilic
attack
by
dominant
radicals
(•OH
SO4•-)
generated
composite
PS-UV-CoAl-LDH
system.
Journal of Alloys and Compounds,
Journal Year:
2024,
Volume and Issue:
979, P. 173568 - 173568
Published: Jan. 18, 2024
In
this
research,
an
organic
supermolecule
self-assembly
perylene
diimides
(PDIs)
semiconductor
was
wrapped
around
the
surface
of
three-dimensional
metal
oxides
frame
(C,
N,
S-CeO2)
by
oil
bath
heating
method.
The
photocatalytic
ability
determined
degradation
pollutants
under
visible
light.
photodegradation
rate
tetracycline
(TC)
nearly
80.1%
within
30
min,
and
apparent
reaction
constant
(k)
15.83
times
higher
than
that
C,
S-CeO2.
Free
radical
capture
experiments
electron
spin
resonance
analysis
showed
•O2-,
•OH
1O2
were
main
active
species.
structure
PDIs/C,
S-CeO2
maintained
stable
after
four
cycles,
meanwhile,
anti-ion
interference
experiment
illustrated
efficiency
not
affected
neutral
ionic
intensity.
Further,
formation
pathways
intermediates
during
process
toxicity
prediction
proposed.
addition,
10%
could
also
efficiently
degrade
other
(chlorotetracycline
(CTC),
ciprofloxacin
(CIP),
rhodamine
B
(RhB),
methylene
blue
(MB)).
excellent
activity
attributed
to
matched
energy
band
structure,
establishment
multi-dimensional
channels,
more
significant
light
assimilation
performance
enhanced
photothermal
ability.
This
work
provides
a
new
perspective
on
construction
n-n
S-scheme
heterojunction
photocatalysts
between
self-assembled
supramolecular
materials
MOF-derived
oxides.
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.
