Inorganic Chemistry,
Год журнала:
2023,
Номер
62(33), С. 13587 - 13596
Опубликована: Авг. 9, 2023
Exploring
low-cost
and
high-performance
oxygen
evolution
reaction
(OER)
catalysts
has
attracted
great
attention
due
to
their
crucial
role
in
water
splitting.
Here,
a
bifunctional
Cu5FeS4/Ni3S2@NF
catalyst
was
situ
formed
on
nickel
(Ni)
foam
toward
efficient
photoassisted
electrocatalytic
(P-EC)
OER,
which
displays
an
ultralow
overpotential
of
260
mV
at
30
mA
cm-2
alkaline
solution,
outperforming
most
previously
reported
Ni-based
catalysts.
It
also
shows
potential
degradation
antibiotics
as
alternative
anode
OER
owing
the
prompt
transfer
photogenerated
holes.
The
photocurrent
test
transient
photovoltage
spectroscopy
indicate
that
synergistic
coupling
charge
extraction
sinking
effects
Cu5FeS4
Ni3S2
is
critical
for
boosting
activity
via
photoassistance.
Electrochemical
active
surface
area
electrochemical
impedance
tests
further
prove
electromotive
force
can
effectively
compensate
OER.
This
work
not
only
provides
good
guidance
integrating
photocatalysis
electrocatalysis,
but
indicates
key
utilization
carriers
P-EC.
Abstract
Metal
oxides
derived
from
metal–organic
frameworks
have
received
considerable
attention
for
water
treatment.
Herein,
MIL-68
(In)–derived
rod-like
carbon
(C)
and
nitrogen
(N)
codoped
In
2
O
3
–modified
GdFeO
(CN–InO/GdF)
Z-scheme
heterostructures
were
rationally
constructed
through
simple
pyrolysis
a
wet-chemical
route.
The
synthesized
CN–InO/GdF
catalysts
characterized
using
several
physicochemical
techniques.
Moreover,
the
obtained
exhibited
excellent
photocatalytic
performance
toward
tetracycline
(TC)
degradation.
Impressively,
optimized
CN–InO/GdF-3
heterostructure
catalyst
displayed
boosted
TC
removal
efficiency
of
99.06%
within
60
min
irradiation,
which
was
7.1
9.7
times
higher
than
those
bare
CN–InO
,
respectively.
remarkably
enhanced
photoactivity
principally
attributed
to
synergistically
combined
interfaces
hindering
recombination
photoinduced
carriers,
maintained
redox
capacity
via
spatial
charge
transfer.
Finally,
tentative
degradation
mechanism
determined
on
basis
density
functional
theory
calculations
intermediates
analysis.
This
work
elucidated
design
highly
efficient
various
applications.
