Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Abstract
The
photocatalytic
reduction
of
CO
2
in
water
to
produce
fuels
and
chemicals
is
promising
while
challenging.
However,
many
photocatalysts
for
accomplishing
such
challenging
task
usually
suffer
from
unspecific
catalytic
active
sites
the
inefficient
charge
carrier's
separation.
Here,
a
site‐specific
single‐atom
Ni/TiO
2−x
catalyst
reported
by
situ
topological
transformation
Ni‐Ti‐EG
bimetallic
metal–organic
frameworks.
loading
nickel
nanoparticles
or
individual
atoms,
which
act
as
specific
sites,
can
be
precisely
regulated
chelating
agents
through
partial
removal
adjacent
oxygen
atoms.
Furthermore,
degree
lattice
strain
catalysts,
improves
separation
efficiency
carriers,
modulated
fine‐tuning
process.
By
leveraging
anchored
atoms
strained
TiO
,
optimized
Ni
SA0.27
/TiO
shows
generation
rate
86.3
µmol
g
−1
h
(288
times
higher
than
that
NPs
)
selectivity
up
92.5%
pure‐water
system.
This
work
underscores
importance
tailoring
creating
facilitate
efficient
selective
.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(28)
Published: May 10, 2024
Abstract
Graphitic
carbon
nitride
(CN),
as
a
nonmetallic
photocatalyst,
has
gained
considerable
attention
for
its
cost‐effectiveness
and
environmentally
friendly
nature
in
catalyzing
solar‐driven
CO
2
conversion
into
valuable
products.
However,
the
photocatalytic
efficiency
of
reduction
with
CN
remains
low,
accompanied
by
challenges
achieving
desirable
product
selectivity.
To
address
these
limitations,
two‐step
hydrothermal‐calcination
tandem
synthesis
strategy
is
presented,
introducing
quantum
dots
(CQDs)
forming
ultra‐thin
CQD/CN
nanosheets.
The
integration
CQDs
induces
distinct
work
function
CN,
creating
robust
interface
electric
field
after
combination.
This
facilitates
accumulation
photoelectrons
region,
providing
an
abundant
source
reduced
electrons
process.
Remarkably,
nanosheets
exhibit
average
yield
120
µmol
g
−1
,
showcasing
outstanding
selectivity
92.8%.
discovery
not
only
presents
innovative
pathway
development
high‐performance
photocatalysts
grounded
non‐metallic
materials
employing
but
also
opens
new
avenues
versatile
application
prospects
environmental
protection
sustainable
cleaning
energy.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(4), P. 4481 - 4490
Published: Feb. 15, 2024
Reasonably
utilizing
solar
energy
to
synthesize
hydrogen
peroxide
(H2O2)
from
oxygen
and
water
is
a
promising
sustainable
solution.
In
this
work,
we
constructed
an
S-scheme
photocatalyst
ZnIn2S4/PDA
(ZIS/PDA)
by
loading
polydopamine
(PDA)
on
the
surface
of
ZnIn2S4,
which
significantly
enhanced
separation
transfer
photogenerated
charge
carriers
while
retaining
excellent
oxidation
reduction
abilities
exhibited
outstanding
H2O2
production
performance
(1747
μmol·g–1·h–1)
under
visible
light
in
pure
water,
39
times
yield
ZnIn2S4.
The
presence
PDA
coating
adsorption
capacity
catalysts
for
improved
selectivity
direct
two-electron
reaction
(2e–ORR)
formation
rate
effectively
reducing
Gibbs
free
(ΔG)
*OOH.
addition,
ZIS/PDA
inhibited
decomposition
promoting
rapid
desorption
H2O2,
conducive
stable
accumulation
H2O2.
summary,
innovative
demonstrates
remarkable
efficiency
production,
offering
potential
solution
synthesis.
