Catalysts,
Journal Year:
2024,
Volume and Issue:
14(8), P. 516 - 516
Published: Aug. 9, 2024
Polymeric
carbon
nitride
(PCN)
is
a
kind
of
polymeric
semiconductor
that
widely
popular
in
photocatalysis-related
energy
and
environmental
fields.
However,
the
photocatalytic
activity
still
limited
due
to
its
poor
conductivity
low
charge
separation
efficiency.
In
this
work,
benzene
rings
were
introduced
adjust
electronic
structure
PCN,
then
PCN-based
all-solid
Z-scheme
heterojunction
was
fabricated
by
combing
multiwall
nanotubes
(CNTs)
ferric
oxide
through
precipitation
situ
deposit
method.
Upon
optimizing
ratio
between
CNTs,
Fe2O3,
(PCN:CNTs:Fe2O3
=
10:1:3
weight),
composites
expressed
superior
degradation
towards
methylene
blue
(MB)
crystal
violet
(CV)
compared
with
pristine
PCN
Fe2O3.
The
MB
percentage
achieved
90%
75
min,
CV
up
99.6%
within
50
min.
mechanism
verified
band
alignment
metal
selective
deposition.
CNTs
played
role
an
electron
shuttling
mediator
hence
improved
This
work
provides
ideas
for
construction
polymer-inorganic
photocatalysts
practical
applications.
ChemCatChem,
Journal Year:
2024,
Volume and Issue:
16(22)
Published: Aug. 13, 2024
Abstract
Converting
clean
solar
energy
into
chemical
through
artificial
photosynthesis
is
an
effective
solution
to
solve
the
and
environmental
issues.
Here,
we
report
a
Cs
3
Bi
2
Br
9
/Bi
WO
6
(CBB/BWO)
Z‐scheme
heterojunction
constructed
via
electrostatic
self‐assembly,
which
facilitates
efficient
separation
of
photogenerated
carriers
ensures
corresponding
redox
capacity
both
components.
By
sharing
atoms,
Br−Bi−O
bond
established
between
CBB
BWO,
serving
as
“electron
bridge”.
The
electrons
generated
by
BWO
are
efficiently
channeled
heterojunction‐formed
bridge”,
thereby
achieving
photocatalytic
CO
reduction.
Under
simulated
sunlight
conditions,
it
exhibits
highest
yield
72.52
μmol
g
−1
(without
addition
any
precious
metal,
photosensitizers
or
sacrifices),
approximately
7‐fold
18‐fold
greater
than
that
pure
respectively.
This
work
provides
more
profound
comprehension
regulation
electron
transfer
interfacial
bonds,
proposing
promising
strategy
for
development
photocatalysts
photoreduction.
