Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(26), P. 8038 - 8045
Published: June 17, 2024
Direct
nitrogen
oxidation
into
nitrate
under
ambient
conditions
presents
a
promising
strategy
for
harsh
and
multistep
industrial
processes.
However,
the
dynamic
structural
evolution
of
active
sites
in
surface
reactions
constitutes
highly
intricate
endeavor
remains
its
nascent
stage.
Here,
we
constructed
Bi
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(36)
Published: Dec. 1, 2023
Enhancing
charge
separation
in
semiconductor
photocatalysts
is
a
major
challenge
for
efficient
artificial
photosynthesis.
Herein,
compact
heterojunction
designed
by
embedding
half-metallic
C(CN)3
(hm-CN)
hydrothermally
BiOBr
(BOB)
as
the
backbone.
The
interface
between
hm-CN
and
BOB
seamless
formed
covalent
bonding
to
facilitate
transmission
of
photoinduced
electrons
from
hm-CN.
transient
photocurrents
electrochemical
impedance
spectra
reveal
that
modified
composite
catalyst
exhibits
larger
electron
transfer
rate.
photocatalytic
activity
hm-CN/BOB
increases
significantly
indicated
CO
yield
about
four
times
higher
than
individual
components.
Density-functional
theory
calculations
verify
improves
transport
decreases
reaction
energy
barrier,
thus
promoting
overall
CO2
conversion
efficiency.
half-metal
nitride
coupled
heterojunctions
might
have
large
potential
photosynthesis
related
applications.
Acta Physico-Chimica Sinica,
Journal Year:
2023,
Volume and Issue:
0(0), P. 2212011 - 2212011
Published: Jan. 1, 2023
Abstract:
Rapid
increase
in
energy
shortage
and
ecological
environmental
pollution
has
become
a
major
issue
that
been
continuously
drawing
global
attention,
because
it
severely
affects
human
health
limits
sustainable
social
development.
Various
technologies
have
developed
used
to
rationalize
the
utilization
of
new
sources
control.
Among
these
technologies,
photocatalysis
research
priority
field
governance
Advantages
such
as
low
consumption,
no
secondary
pollution,
simple
operation
methods,
mild
reaction
conditions
make
an
attractive
choice.
Notably,
although
is
promising
approach
for
enhancing
antibiotic
removal
CO2
reduction
efficiency,
industrialization
large-scale
application
photocatalysts
limited
issues
photo-absorption
redox
capacity,
photogenerated
electron
separation
or
migration
efficiency.
The
progress
current
on
regulation
composition/structure
performance
promoted
exploration
efficient
practical
modification
strategies
construct
photocatalyst
composites
with
improved
by
facilitating
light
absorption/utilization
photocatalytic
surface/interface
performance.
many
common
strategies,
construction
Z-scheme
heterojunction
can
enhance
absorption
ability
significantly
reduce
recombination
rate
electron-hole
pairs.
Additionally,
this
strategy
maintains
strong
reduction/oxidation
electrons/holes
facilitate
oxidation
pollutants
conversion
clean
energy.
In
study,
MnO2/BiOBr
(MO/BiOBr)
were
effectively
constructed
using
mechanically
assisted
ball-milling
process.
situ
X-ray
photoelectron
spectroscopy
under
dark
confirmed
photoexcited
electrons
MnO2
migrate
directionally
BiOBr
through
Mn3+/Mn4+
couple
create
transfer
path.
A
similar
conclusion
also
be
deduced
from
results
spin-resonance
band
structure
analysis.
formation
between
BiOBr,
attributed
staggered
band,
enabled
space
centers.
Furthermore,
compared
MO/BiOBr
exhibited
enhanced
markedly
reduced
photoinduced
pair
rate,
ultraviolet-visible
diffuse
reflectance
photoluminescence
spectroscopy.
Thus,
exceptional
toward
ciprofloxacin
(CIP)
CO
evolution.
CIP
efficiency
reached
77.3%
just
60
min,
which
1.28
times
higher
than
(60.2%).
Simultaneously,
CO2-to-CO
(20.02
µmol·g-1·h-1)
was
found
2.20-fold
(9.08
µmol·g-1·h-1).
Photocurrent
measurement
electrochemical
impedance
indicated
interfacial
pure
BiOBr.
liquid
chromatograph
mass
spectrometry
Fourier
transform
infrared
conducted
study
generation
intermediates
during
toxicity
corresponding
after
degradation
evaluated
estimation
software
(T.E.S.T.)
analyze
actual
physiological
toxicity,
based
indexes
Daphnia
Magna
lethal
concentration
50%
(LC50,
48
h),
Fathead
Minnow
dose
(LD50,
96
mutagenicity,
bioaccumulation
factor.
proposed
novel
simplified
constructing
solar-derived
fuel
synthesis.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(19)
Published: Jan. 31, 2024
Broad-spectrum-driven
high-performance
artificial
photosynthesis
is
quite
challenging.
Herein,
atomically
ultrathin
bismuthene
with
semimetallic
properties
designed
and
demonstrated
for
broad-spectrum
(ultraviolet-visible-near
infrared
light)
(UV-vis-NIR)-driven
photocatalytic
CO