Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Converting
CO
2
into
hydrocarbons
could
mitigate
the
greenhouse
effect
and
address
energy
crises.
Metal
nanocluster
materials
are
well-suited
for
photocatalytic
reduction.
MOF-based
heterojunctions
can
significantly
enhance
the
efficiency
of
photocatalytic
hydrogen
production;
however,
construction
efficient
remains
a
formidable
challenge.
In
this
study,
we
successfully
developed
series
Type
II
by
growing
TiO2
on
Cr-based
MOF,
thereby
regulating
generation,
separation,
and
transportation
photogenerated
charge
carriers
to
improve
evolution
performance.
Among
these,
23%TiO2/MIL-101(Cr)
photocatalyst
exhibited
highest
production
activity,
achieving
884.01
μmol
g–1
in
just
5
h,
which
is
6.8
6.0
times
that
pure
MIL-101(Cr)
TiO2,
respectively.
Additionally,
demonstrated
excellent
cyclic
stability.
Tiny
particles
were
proven
mainly
deposited
surface
N2
sorption
isotherm
analyses,
transmission
electron
microscopy
(TEM),
high-resolution
TEM,
high-angle
annular
dark
field
scanning
microscopy,
etc.
Characterization
techniques
such
as
situ
XPS
confirmed
formation
TiO2/MIL-101(Cr)
heterostructure.
Band
structure
analysis
indicates
meets
thermodynamic
requirements
for
production.
Furthermore,
transient
photocurrent
measurements,
electrochemical
impedance
analysis,
photoluminescence
reveal
possesses
superior
capabilities
carrier
transport,
resulting
from
kinetic
perspective.
This
research
offers
valuable
insights
into
preparation
development
photocatalysts