Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(18)
Published: Jan. 27, 2024
Abstract
Hydrogen
peroxide
(H
2
O
)
is
a
crucial
oxidant
in
advanced
oxidation
processes.
In
situ,
photosynthesis
of
it
natural
water
holds
the
promise
practical
application
for
remediation.
However,
current
H
systems
primarily
relies
on
oxygen
reduction,
leading
to
limited
performance
with
low
dissolved
or
anaerobic
conditions
found
polluted
water.
Herein,
novel
photocatalyst
based
conjugated
polymers
alternating
electron
donor–acceptor
structures
and
electron‐withdrawing
side
chains
donors
introduced.
Specifically,
carbazole
functions
as
donor,
triazine
serves
acceptor,
cyano
acts
chain.
Notably,
exhibits
remarkable
solar‐to‐chemical
conversion
0.64%,
highest
reported
Furthermore,
even
conditions,
achieves
an
impressive
photosynthetic
efficiency
1365
µmol
g
−1
h
,
surpassing
all
.
This
improvement
attributed
effective
relocation
active
site
from
high‐energy
low‐energy
acetylene
mediated
by
chains,
resulting
enhanced
generation
breakthrough
offers
new
avenue
efficient
remediation
using
technologies
oxygen‐limited
environments,
holding
significant
implications
environmental
restoration.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(3)
Published: Dec. 5, 2023
This
work
reports
that
a
low-temperature
thermal
calcination
strategy
was
adopted
to
modulate
the
electronic
structure
and
attain
an
abundance
of
surface-active
sites
while
maintaining
crystal
morphology.
All
experiments
demonstrate
new
photocatalyst
nano
MIL-125(Ti)-250
obtained
by
has
abundant
Ti
Angewandte Chemie,
Journal Year:
2023,
Volume and Issue:
136(3)
Published: Dec. 5, 2023
Abstract
This
work
reports
that
a
low‐temperature
thermal
calcination
strategy
was
adopted
to
modulate
the
electronic
structure
and
attain
an
abundance
of
surface‐active
sites
while
maintaining
crystal
morphology.
All
experiments
demonstrate
new
photocatalyst
nano
MIL‐125(Ti)‐250
obtained
by
has
abundant
Ti
3+
induced
oxygen
vacancies
high
specific
surface
area.
facilitates
adsorption
activation
N
2
molecules
on
active
in
photocatalytic
nitrogen
fixation.
The
NH
3
yield
over
is
enhanced
156.9
μmol
g
−1
h
,
twice
higher
than
parent
MIL‐125(Ti)
(76.2
).
Combined
with
density
function
theory
(DFT),
it
shows
pattern
tends
be
from
“end‐on”
“side‐on”
mode,
which
thermodynamically
favourable.
Moreover,
electrochemical
tests
atomic
ratio
/Ti
4+
can
enhance
carrier
separation,
also
promotes
efficiency
may
offer
insights
into
design
innovative
photocatalysts
for
various
chemical
reduction
reactions.
EES Catalysis,
Journal Year:
2024,
Volume and Issue:
2(2), P. 411 - 447
Published: Jan. 1, 2024
This
review
comprehensively
summarizes
the
recent
advances
on
crystalline
carbon
nitrides,
including
their
preparation,
optimization
strategies,
photocatalytic
applications,
as
well
challenges
and
prospects.
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.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(7), P. 4728 - 4737
Published: March 13, 2024
Imine-linked
isomeric
covalent
organic
frameworks
(COFs)
with
opposite
linkage
orientations
are
not
rare,
but
their
structure
and
photocatalytic
property
corrections
still
puzzling,
let
alone
the
emerging
photosynthetic
H2O2
performance.
Herein,
a
pair
of
COFs
(TB-COF
TA-COF)
reversed
imine
linkages
was
fabricated.
Compared
to
TA-COF,
TB-COF
exhibited
larger
dipole
moments
better
charge
carrier
separation
efficiency,
resulting
in
superior
photosynthesis
capability
via
dominant
oxygen
reduction
reaction
(ORR)
paths
(O2–O2•––H2O2
O2–O2•––O21–H2O2)
feeble
water
oxidation
(WOR)
paths.
With
no
sacrificial
agents
air,
rates
were
5186
μmol
g–1
h–1
4111
natural
seawater,
respectively.
The
seawater-produced
can
be
directly
utilized
for
tetracycline
degradation,
manifesting
big
picture
wastewater
treatment
by
H2O2.
Theoretical
calculations
revealed
that
hydroxyl-rich
benzene
ring
photooxidation
part
triazine
unit
primary
photoreduction
part.
Through
linkage-orientation
regulation,
electronic
structures,
migration
property,
energy
barrier
rate
determination
step
2e–
ORR
WOR
well-modulated.
current
work
provides
insight
into
effect
orientation
on
performance
may
enlighten
design
catalysts
photosynthesis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: March 15, 2024
Abstract
Environmental
protection
and
resource
reclamation
make
the
extraction
of
uranium
from
uranium‐containing
wastewater
be
a
key
role
in
nuclear
chemistry
industry.
Although
previous
studies
have
revealed
several
effective
methods
materials
for
such
use,
however,
few
are
concerned
about
discharge
issues.
In
fact,
direct
treated
into
environment
is
still
not
green
way.
Here,
an
innovative
conversion
approach
shown,
which
can
simultaneously
achieve
to
valuable
chemical.
This
concept
implemented
by
azobenzene‐pendent
covalent
organic
framework,
showing
smart
trans
‐to‐
cis
photoresponsive
properties
both
space
electronic
structure
consequently,
largely
enhanced
efficiency
under
UV
irradiation,
relative
visible
light
irradiation.
real
wastewater,
material
found
give
selective
100%
H
2
O
generation
(1872.3
µmol
g
−1
h
).
The
mechanism
due
unique
photocatalysis
coupling
between
reduction
reaction
(URR),
aiming
at
recovery
or
removal,
water
oxidation
(WOR),
targeting
chemical
.
