Accounts of Materials Research,
Journal Year:
2023,
Volume and Issue:
5(1), P. 76 - 88
Published: Dec. 15, 2023
ConspectusThe
photocatalytic
generation
of
hydrogen
peroxide
(H2O2)
through
the
utilization
only
H2O,
O2,
and
sunlight
represents
an
energy-efficient
ecofriendly
innovation
in
pursuit
a
sustainable
society.
Despite
significant
efforts
that
have
been
directed
toward
development
H2O2
via
photocatalysis,
solar-to-chemical
conversion
(SCC)
efficiency
has
not
yet
reached
levels
required
for
large-scale
practical
applications.
Consequently,
there
is
urgent
demand
to
develop
design
novel
photocatalysts
characterized
by
several
key
attributes:
high
catalytic
activity,
cost-effectiveness,
good
stability.
However,
traditional
inorganic
photocatalysts,
such
as
TiO2,
exhibited
limited
partly
attributable
potential
decomposition
caused
metal
cations.
Recent
research
found
organic
highly
promising
candidates
address
these
limitations.
Organic
materials
offer
remarkable
advantages
including
narrow
bandgap,
adjustable
band
edge
potentials,
ability
control
surface
configurations
use
active
sites,
rational
structural
units
promote
efficient
charge
separation
transfer.
In
field
without
sacrificial
reagents,
widely
studied,
various
strategies
improve
activity
stability
explored.
These
include
construction
donor–acceptor
structures,
conjugated
incorporation
heteroatoms,
enhancement
internal
electric
field,
substitution
functional
groups.
Currently,
exceptional
far
exceeding
well-established
TiO2.In
this
Account,
we
introduce
state-of-the-art
based
on
our
recent
works
typical
results
from
other
This
classification
system
encompasses
anthraquinone-mediated
oxygen
reduction
reaction
(ORR),
radical-related
ORR,
water
oxidation
(WOR),
dual
ORR
WOR
pathways.
Through
classification,
delve
into
essential
kinetic
parameters,
production
rate,
apparent
quantum
(AQE),
SCC
achieved.
Additionally,
highlight
early
exploration
situ
generated
environmental
remediation.
Furthermore,
outline
forthcoming
challenges
suboptimal
solar
energy
utilization,
need
clearer
understanding
structure–activity
relationship,
insufficient
utilization.
conclusion,
Account
makes
substantial
contribution
providing
comprehensive
overview
advancements
us
groups,
addressing
current
challenges,
suggesting
areas
future
generation.
The
ultimate
goal
drive
forward
applications
semiconductor
fields,
thereby
advancing
cause
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(41)
Published: Aug. 26, 2023
Nitrogen-heterocycle-based
covalent
organic
frameworks
(COFs)
are
considered
promising
candidates
for
the
overall
photosynthesis
of
hydrogen
peroxide
(H2
O2
).
However,
effects
relative
nitrogen
locations
remain
obscured
and
photocatalytic
performances
COFs
need
to
be
further
improved.
Herein,
a
collection
functionalized
by
various
diazines
including
pyridazine,
pyrimidine,
pyrazine
have
been
judiciously
designed
synthesized
photogeneration
H2
without
sacrificial
agents.
Compared
with
pyrimidine
pyrazine,
pyridazine
embedded
in
TpDz
tends
stabilize
endoperoxide
intermediate
species,
leading
toward
more
efficient
direct
2e-
oxygen
reduction
reaction
(ORR)
pathway.
Benefiting
from
effective
electron-hole
separation,
low
charge
transfer
resistance,
high-efficiency
ORR
pathway,
an
excellent
production
rate
7327
μmol
g-1
h-1
solar-to-chemical
conversion
(SCC)
value
0.62
%
has
achieved
TpDz,
which
ranks
one
best
COF-based
photocatalysts.
This
work
might
shed
fresh
light
on
rational
design
functional
targeting
photocatalysts
production.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(3), P. 2106 - 2117
Published: Jan. 24, 2023
The
co-production
of
high-value-added
chemicals
and
fuels
by
coupling
biomass
photooxidation
with
carbon
dioxide
(CO2)
photoreduction
has
attracted
wide
interest.
Nevertheless,
there
still
lacks
comprehensive
studies.
Herein,
we
synthesized
a
highly
crystalline
nitride
potassium
sulfur
dual
sites
(K/S@CN-x)
salt-template-assisted
incorporation
method.
K/S
high
crystallinity
resulted
in
the
photocatalytic
performance
significantly
enhancing
visible-light
absorption
accelerated
photogenerated
charge
separation/transfer.
Thus,
K/[email protected],
monoxide
(CO)
evolution
rate
(16.27
μmol
g–1
h–1)
lactic
acid
yield
(78.07%)
were
4.80
times
1.15
times,
respectively,
those
CN.
Furthermore,
density
functional
theory
calculations
performed
to
investigate
role
K
S
reactions.
Our
findings
provide
unique
routes
for
synthesizing
photocatalysts
demonstrate
feasibility
selective
oxidation
coupled
CO2
reduction.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(14)
Published: Feb. 10, 2024
Abstract
The
synthesis
of
hydrogen
peroxide
through
artificial
photosynthesis
is
a
green
and
promising
technology
with
advantages
in
sustainability,
economy
safety.
However,
superoxide
radical
(⋅O
2
−
),
an
important
intermediate
photocatalytic
oxygen
reduction
to
H
O
production,
has
strong
oxidizing
properties
that
potentially
destabilize
the
catalyst.
Therefore,
avoiding
accumulation
⋅O
for
its
rapid
conversion
paramount
significance
improving
catalyst
stability
yield.
In
this
work,
strategy
was
developed
utilize
protonated
groups
depletion
converted
,
thereby
efficiency
from
CN
successfully
enhanced
by
47‐fold.
experimental
findings
demonstrated
polydopamine
not
only
improved
carrier
separation
efficiency,
more
importantly,
provided
adsorption
active
site
efficient
production.
This
work
offers
versatile
approach
synthesizing
stable
photocatalysts.
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.
