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.
Journal of Colloid and Interface Science,
Год журнала:
2023,
Номер
654, С. 317 - 326
Опубликована: Окт. 12, 2023
Mass
transfer
enhancement
and
crystallinity
engineering
are
two
prevailing
technologies
for
photocatalyst
modification.
However,
their
relative
effectiveness
in
enhancing
photocatalytic
activity
remains
unclear
due
to
the
lack
of
rational
probing
catalysts.
In
this
study,
we
synthesized
distinct
carbon
nitride
(C3N4)
catalysts:
one
with
a
high
specific
surface
area
(CN-HA)
other
improved
(CN-HC).
These
catalysts
served
as
probes
compare
respective
impacts
on
activities.
Comprehensive
characterization
techniques
density
functional
theory
(DFT)
calculation
results
unveiled
that
played
dominant
role
light
absorption
charge
dynamics,
while
primarily
influenced
mass
photocatalysis.
Importantly,
our
findings
revealed
achieved
greater
impact
hydrogen
evolution
than
from
enhancement.
Consequently,
CN-HC
demonstrated
remarkable
improvement
performance
(6465.4
μmol
h-1
g-1),
surpassing
both
C3N4
CN-HA
by
19.4-
2.4-fold,
respectively,
accompanied
apparent
quantum
yield
23.8
%
at
420
nm.
This
study
not
only
unveils
factor
influencing
photocatalysts
but
also
provides
modified
approach
robust
solar
fuel
production,
shedding
path
toward
efficient
sustainable
energy
conversion.
Molecules,
Год журнала:
2025,
Номер
30(7), С. 1563 - 1563
Опубликована: Март 31, 2025
Utilizing
two
or
more
semiconductor
materials
with
distinct
geometric
and
electronic
energy
arrangements
at
the
nanoscale
to
construct
heterostructures
is
an
important
means
for
developing
high-performance
catalysts
photocatalytic
hydrogen
evolution.
In
this
study,
ZnIn2S4
serves
as
primary
catalyst
carrier,
while
Mo-W18O49
functions
cocatalyst
supported
on
surface
of
ZnIn2S4.
A
series
ZnIn2S4/Mo-W18O49
heterojunction
composite
were
synthesized
through
a
straightforward
hydrothermal
method.
The
photocatalyst
demonstrates
exceptional
evolution
activity.
Notably,
loading
10%,
achieves
optimal
evolution,
yielding
2592.8
μmol
g−1,
which
31
times
greater
than
that
pure
Further
characterized
results
samples
showed
appropriate
mass
ratio
can
increase
electron
transfer
rate,
facilitates
reducing
recombination
probability
photo-generated
electrons
holes,
thus
improving
efficiency.
