Metal-free
polymeric
photocatalysts
with
tunable
building
blocks,
ample
redox-active
centers,
and
exceptional
light-harvesting
capability
have
emerged
as
promising
candidates
for
generating
hydrogen
peroxide
(H2O2)
through
the
oxygen
reduction
reaction
(ORR)
water
oxidation
(WOR).
The
slow
kinetics
of
WOR
process
coupled
rapid
charge
recombination
nevertheless
impedes
efficient
generation
H2O2.
Herein,
a
thiophene
functionalized
linear
conjugated
polymer
(DEB-Tp-S2)
was
fabricated
effective
overall
H2O2
photoproduction.
DEB-Tp-S2
exhibits
high
initial
photocatalytic
yield
rate
2762
μmol
g–1
h–1
in
absence
sacrificial
additives
possesses
outstanding
cycling
stability.
Experimental
density
functional
theory
(DFT)
results
exhibit
that
moieties
can
reduce
strength
O–H
bond
H2O,
which
promotes
4e–
process,
thereby
suppressing
improving
proton
supply.
This
work
reveals
indispensable
role
chemical
structure
engineering
optimizing
their
offers
fresh
insights
into
design
achieving
production.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(39)
Published: July 22, 2024
Abstract
Graphitic
carbon
nitride
(g‐C
3
N
4
)
assisted
photocatalytic
production
of
hydrogen
peroxide
(H
2
O
has
already
attracted
the
interest
many
researchers
due
to
its
environmental
sustainability.
Nevertheless,
inherent
drawbacks
g‐C
limit
progress.
Metal‐free
modification
strategies,
including
nanostructure
design,
defect
introduction,
doping,
and
heterojunction
construction,
have
been
developed
improve
efficiency
H
production.
Compared
metal
modification,
metal‐free
strategies
avoid
use
precious
metals
leaching
heavy
ions,
which
advantages
good
stability
friendliness.
However,
a
comprehensive
review
from
modified
by
is
still
lacking.
This
first
recaps
mechanism
,
photoexcitation,
carrier
separation
redox
reactions.
Then,
perspective
advances
in
photocatalysts
are
presented,
with
special
focus
on
kernel
connection
between
different
based
pivotal
stages
Subsequently,
recent
applications
‐based
for
situ
generated
mainly
water
purification
organic
synthesis,
briefly
discussed.
Finally,
prospects
envisioned
hope
that
it
will
“something
do”
field
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Abstract
Developing
multifunctional
photocatalysts
with
intelligent
self‐adjusting
is
of
great
significance
in
the
photocatalytic
process.
Herein,
a
smart
covalent
organic
framework
(Por‐HQ‐COF)
phenol‐quinone
conversion
structure
pH
changes
constructed
for
photooxidation,
photoreduction,
and
H
2
O
production.
As
photocatalyst,
Por‐HQ‐COF
can
convert
into
Por‐BQ‐COF
intelligently
trigger
including
solution
pH,
vice
versa.
The
reconstruction
not
only
significantly
alters
morphologies
specific
surface
areas
COF,
but
also
leads
to
an
entirely
change
band
energy
charge
distribution
influence
photoelectric
properties.
result,
under
acidic
conditions,
converts
automatically
photoreduce
high
concentration
Cr(VI)
Cr(III)
efficiently.
Under
neutral
superoxide
anions
(·O
−
)
initiate
accelerate
photooxidation
degrade
high‐concentration
TC.
alkaline
Por‐BQ‐COF,
effectively
photosynthesize
(1525
µmol
h
−1
g
at
λ
>
420
nm)
absence
any
sacrificial
reagents,
reveal
strong
alkalinity
lower
barrier
hydrogen
extraction
from
clarify
active
sites
This
work
provides
new
strategy
developing
fulfill
application
across
full
environment.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(29), P. 38061 - 38072
Published: July 10, 2024
Single-crystalline
BiOCl
nanosheets
with
coexposed
{001}
and
{110}
facets,
as
well
oxygen
vacancies,
were
synthesized
using
a
simple
method.
These
have
the
ability
to
activate
molecular
oxygen,
producing
reactive
superoxide
radicals
(77.8%)
singlet
(22.2%)
when
exposed
solar
light.
The
demonstrated
excellent
photocatalytic
efficiency
in
H2O2
under
simulated
light
oxidatively
hydroxylating
phenylboronic
acid
blue
LED
Our
research
highlights
significance
of
constructing
enhancing
performance.
capability
produce
solar-to-chemical
energy
conversion
0.11%.
