Today,
the
energy
and
environmental
crisis
originating
from
use
of
fossil
fuels
carbon
dioxide
(CO2)
emissions
has
become
a
common
concern
in
lives
people.
Photocatalysis
is
promising
clean
technology
receiving
much
attention.
There
are
diverse
strategies
to
enhance
efficiency
photocatalysis,
high
entropy
photocatalysts
(HEPs)
show
great
potential
as
new
efficient
photocatalysts.
The
tunability
HEPs
provides
more
possibilities
for
design
electronic
structure
catalysts,
which
leads
separation
electron-hole
pairs
substantially
enhances
photocatalytic
performance.
This
review
discusses
composition
HEPs,
their
advantages
characterization,
prediction,
latest
applications
various
systems.
Finally,
we
discuss
summarize
challenges
prospects
HEPs.
Abstract
Hydrogen
peroxide
(H
2
O
)
is
one
of
the
100
most
important
chemicals
in
world
with
high
energy
density
and
environmental
friendliness.
Compared
anthraquinone
oxidation,
direct
synthesis
H
hydrogen
oxygen
(O
),
electrochemical
methods,
photocatalysis
has
characteristics
low
consumption,
easy
operation
less
pollution,
broad
application
prospects
generation.
Various
photocatalysts,
such
as
titanium
dioxide
(TiO
graphitic
carbon
nitride
(g‐C
3
N
4
metal‐organic
materials,
nonmetallic
have
been
studied
for
production.
Among
them,
g‐C
which
are
simple
to
synthesize
functionalize,
attracted
wide
attention.
The
electronic
band
structure
shows
a
bandgap
2.77
eV,
valence
maximum
1.44
V,
conduction
minimum
−1.33
theoretically
meets
requirements
In
comparison
semiconductor
materials
like
TiO
(3.2
eV),
this
material
smaller
bandgap,
results
more
efficient
response
visible
light.
However,
photocatalytic
activity
yield
were
severely
inhibited
by
electron‐hole
pair
recombination
rate,
utilization
rate
light,
poor
selectivity
products.
Although
previous
reviews
also
presented
various
strategies
improve
production,
they
did
not
systematically
elaborate
inherent
relationship
between
control
their
structure.
From
point
view,
article
focuses
on
engineering
latest
research
progress
On
basis,
strategy
production
proposed
through
morphology
control,
crystallinity
defect,
doping,
combined
other
strategies.
Finally,
challenges
industrialization
discussed
envisioned.
Increasing
active
sites
in
catalysts
is
of
utmost
importance
for
catalytic
processes.
In
this
regime,
single‐atom
dispersing
on
graphitic
carbon
nitrides
(g‐C
3
N
4
)
to
produce
fine
chemicals,
such
as
hydrogen
peroxide
(H
2
O
),
current
interest
due
not
only
enhancing
performance
but
also
reducing
the
loading
necessary
metals.
Herein,
g‐C
engineered
by
atomically
aluminum
(Al)
or
indium
(In)
provide
centers
via
one‐step
thermal
shock
polymerization.
The
addition
Al
and
can
accelerate
efficacy
owing
Lewis
acid–base
interactions
between
these
metals
oxygen
(O
).
Under
conditions,
formation
oxygenic
radicals
will
strongly
be
associated
with
enhanced
H
,
confirmed
situ
electron
paramagnetic
resonance
spectroscopy.
Furthermore,
empirical
analyses
from
positron
annihilation
spectroscopy
show
that
atoms
occupy
near
positions
vacancies
(V
C
form
NV
@InO
bonds.
This
replacement
highest
energy
based
density
functional
theory
calculations,
improving
stability
atom‐dispersive
materials.
Therefore,
combination
experimental
theoretical
proofs,
study
suggests
exact
location
structures,
which
help
boost
production
.
ACS Nano,
Год журнала:
2024,
Номер
18(31), С. 20435 - 20448
Опубликована: Июль 26, 2024
Photocatalytic
H2O2
production
has
attracted
much
attention
as
an
alternative
way
to
the
industrial
anthraquinone
oxidation
process
but
is
limited
by
weak
interaction
between
catalysts
and
reactants
well
inefficient
proton
transfer.
Herein,
we
report
on
a
hydrogen-bond-broken
strategy
in
carbon
nitride
for
enhancement
of
photosynthesis
without
any
sacrificial
agent.
The
promoted
hydrogen
bond
formation
exposed
N
atoms
H2O
molecules,
which
enhances
proton-coupled
electron
transfer
therefore
photocatalytic
activity.
serve
buffering
sites
from
molecules
nitride.
also
enhanced
through
adsorption
reduction
O2
gas
toward
because
nitrogen
vacancies
(NVs)
cyano
groups
after
intralayer
breaking
A
high
light-to-chemical
conversion
efficiency
(LCCE)
value
3.85%
achieved.
are
found
undergo
one-step
two-electron
pathway
photogenerated
hot
electrons
four-electron
produce
gas,
respectively.
Density
functional
theory
(DFT)
calculations
validate
reaction
pathways.
This
study
elucidates
significance
catalyst
reactants,
greatly
increases
tunneling
dynamics.
