Photocatalytic
hydrogen
production
is
a
promising
strategy
to
solve
the
energy
crisis
and
environmental
issues.
Herein,
an
efficient
photocatalyst
consisting
of
MoP
quantum
dots
Pt
nanoclusters
dual
cocatalysts
anchored
on
polymeric
carbon
nitride
matrix
(denoted
as
Mo–Pt/CN)
designed
for
achieving
boosted
photocatalytic
H2
production.
Benefiting
from
synergy
cocatalysts,
Mo–Pt/CN
delivers
impressive
evolution
rate
11.26
mmol·g-1·h-1,
which
6.43
25.02
times
higher
than
those
Pt/CN
Mo/CN
photocatalyst,
respectively.
Systematic
experiment
combining
with
theoretical
calculation
reveal
that
enhanced
activity
attributes
asymmetrically
geometrical
deployment
between
MoP–Pt
NCs
induce
asymmetric
charge
distributions
tailor
d-band
center
optimize
adsorption
behavior
H2O*
H*
intermediates
Mo–Pt
sites,
respectively,
thus
facilitating
activation–dissociation
simultaneously
thermoneutral
free
(ΔGH*)
speeding
up
kinetics.
Separation and Purification Technology,
Год журнала:
2023,
Номер
329, С. 125225 - 125225
Опубликована: Сен. 28, 2023
Membrane
separation
and
photocatalytic
degradation
are
two
important
technologies
for
wastewater
purification.
However,
practical
applications
hindered
by
membrane
fouling
in
the
low
efficiency
of
photocatalysis.
A
promising
solution
lies
fusion
photocatalysis
technology,
capitalizing
on
their
respective
strengths
addressing
weaknesses.
This
comprehensive
review
endeavours
to
present
a
thorough
examination
recent
advancements
materials
reactors
treatment.
Key
facets
encompass
fundamentals
photodegradation,
contributions
different
light
bands
waste
removal,
various
fabrication
techniques
diverse
types
reactors,
optimization
operational
parameters.
Notably,
innovative
incorporation
emerging
photothermal
effect
into
technology
has
significantly
augmented
its
longevity
Furthermore,
insightful
commentary
will
be
provided
assess
progress
made
utilizing
this
cutting-edge
pollutant
removal.
Ultimately,
paper
conclude
summarizing
key
findings
challenges
associated
with
integration
these
processes.
The
implementation
advanced
potential
revolutionize
conventional
treatment,
offering
sustainable
environmentally
friendly
approach
large-scale
Advanced Materials,
Год журнала:
2023,
Номер
36(9)
Опубликована: Ноя. 8, 2023
Abstract
Photocatalytic
technology
based
on
carbon
nitride
(C
3
N
4
)
offers
a
sustainable
and
clean
approach
for
hydrogen
peroxide
(H
2
O
production,
but
the
yield
is
severely
limited
by
sluggish
hot
carriers
due
to
weak
internal
electric
field.
In
this
study,
novel
devised
fragmenting
bulk
C
into
smaller
pieces
(CN‐NH
then
subjecting
it
directed
healing
process
create
multiple
order‐disorder
interfaces
‐NaK).
The
resulting
junctions
in
CN‐NH
‐NaK
significantly
boost
charge
dynamics
facilitate
more
spatially
orderly
separated
redox
centers.
As
result,
demonstrates
outstanding
photosynthesis
of
H
via
both
two‐step
single‐electron
one‐step
double‐electron
oxygen
reduction
pathways,
achieving
remarkable
16675
µmol
h
–1
g
,
excellent
selectivity
(>
91%),
prominent
solar‐to‐chemical
conversion
efficiency
exceeding
2.3%.
These
results
surpass
pristine
158
times
outperform
previously
reported
‐based
photocatalysts.
This
work
represents
significant
advancement
catalyst
design
modification
technology,
inspiring
development
efficient
metal‐free
photocatalysts
synthesis
highly
valued
fuels.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(1), С. 784 - 794
Опубликована: Янв. 2, 2024
Highly
crystalline
carbon
nitride
(CCN),
benefiting
from
the
reduced
structural
imperfections,
enables
improved
electron-hole
separation.
Yet,
phase
with
insufficient
inherent
defects
suffers
a
poor
performance
toward
reaction
intermediate
adsorption
respect
to
amorphous
phase.
Herein,
crystalline-amorphous
(CACN)
an
isotype
structure
was
constructed
via
two-step
adjacent
calcination
strategy.
Through
specific
oxygen
etching
and
crystallization,
formation
of
built-in
electric
field
at
interface
could
drive
charge
transfer
separation,
thus
promoting
photoredox
reaction.
As
expected,
optimized
CACN
exhibited
H
ACS Catalysis,
Год журнала:
2024,
Номер
14(18), С. 13768 - 13780
Опубликована: Авг. 31, 2024
Photocatalytic
seawater
splitting
to
produce
clean
hydrogen
from
nonpotable
water
using
sunlight
is
a
crucial
endeavor.
However,
the
scarcity
of
high-performance
photocatalysts
in
promising
yet
fledgling
field
presents
formidable
challenge.
Herein,
we
successfully
synthesized
crystalline
oxygen-modified
carbon
nitride
(CCNO)
polymeric
semiconductor
that
served
as
an
effective
photocatalyst
for
splitting.
Comprehensive
characterizations
and
theoretical
calculations
revealed
nitrogen
vacancies
bridging
oxygen
CCNO
lattice
acted
potent
Lewis
acid–base
pairs,
creating
enhanced
built-in
electric
field.
This
advancement
significantly
accelerated
charge
dynamics
bolstered
resistance
ionic
interference
seawater.
Consequently,
exhibited
robust
photocatalytic
H2
evolution
activity
29.51
mmol
g–1
h–1
natural
seawater,
with
impressive
apparent
quantum
efficiency
66.86%
under
420
nm
monochromatic
light.
Seawater
production
reached
16.83
light
irradiation
3
h
(9–12
o'clock),
showcasing
its
great
potential
practical
applications.
work
strategies
developing
metal-free
elucidates
reaction
mechanism
process,
laying
foundation
scalable
hydrogen.
ACS Catalysis,
Год журнала:
2024,
Номер
14(19), С. 14836 - 14854
Опубликована: Сен. 23, 2024
In
this
work,
protonated
poly(heptazine
imide)
(H-PHI)
was
obtained
by
adding
acid
to
the
suspension
of
potassium
PHI
(K-PHI)
in
ethanol.
It
established
that
H-PHI
demonstrates
very
high
photocatalytic
activity
reaction
hydrogen
formation
from
ethanol
presence
Pt
nanoparticles
under
visible
light
irradiation
comparison
with
K-PHI.
This
enhancement
can
be
attributed
improved
efficiency
photogenerated
charge
transfer
photocatalyst's
surface,
where
redox
processes
occur.
Various
factors
influencing
system's
were
evaluated.
Notably,
it
discovered
conditions
introduction
into
system
significantly
affect
size
(cocatalyst
metal)
deposition
on
thereby
enhancing
stability
producing
molecular
hydrogen.
operate
efficiently
air
without
additional
components
photocatalyst
surface
block
access.
Under
optimal
conditions,
apparent
quantum
yield
production
at
410
nm
is
around
73%,
highest
reported
value
for
carbon
nitride
materials
date.
The
addition
not
only
increases
reduction
part
but
also
leads
a
value-added
product
ethanol-1,1-diethoxyethane
(acetal)
selectivity.
