Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
S-scheme
heterojunctions
have
become
a
hot
topic
in
photocatalysis.
Copper
(Cu)
compounds
are
versatile
family
of
photocatalytic
materials,
including
oxides
(CuO,
Cu2O),
binary
(CuBi2O4,
CuFe2O4),
sulfides
(CuxS,
(1
≤
x
2)),
selenides
(CuSe),
phosphides
(Cu3P),
metal
organic
frameworks
(MOFs),
etc.
These
materials
characterized
by
narrow
bandgaps,
large
absorption
coefficients,
and
suitable
band
positions.
To
further
increase
the
efficiency
photoinduced
charge
separation,
Cu-based
widely
integrated
into
exploited
for
hydrogen
evolution
reaction
(HER),
CO2
reduction,
H2O2
generation,
N2
fixation,
pollutant
degradation.
This
review
comprehensively
discusses
recent
progress
heterojunctions,
highlights
their
considerable
potential
targeted
applications
sustainable
energy
conversion,
environmental
remediation,
beyond.
The
fundamentals
transfer,
design
principles
verification
tools
summarized.
Then,
describes
categorized
according
to
chemical
composition,
integration
applications.
In
particular,
implications
transfer
mechanism
on
promoting
catalytic
activity
selected
systems
analyzed.
Finally,
current
limitations
outlooks
provided
motivate
future
studies
developing
novel
advanced
photocatalysts
with
high
performance
studying
underlying
mechanisms.
Materials,
Год журнала:
2024,
Номер
17(11), С. 2697 - 2697
Опубликована: Июнь 3, 2024
Sodium-ion
batteries
(SIBs)
have
emerged
as
a
promising
alternative
to
lithium-ion
(LIBs)
due
the
abundance
and
low
cost
of
sodium
resources.
Cathode
material
plays
crucial
role
in
performance
ion
determining
capacity,
cycling
stability,
rate
capability.
Na3V2(PO4)3
(NVP)
is
cathode
its
stable
three-dimensional
NASICON
structure,
but
discharge
capacity
decay
serious
with
increase
cycle
period.
We
focused
on
modifying
NVP
by
coating
carbon
doping
Nb5+
ions
for
synergistic
electrochemical
properties
carbon-coated
NVP@C
material.
X-ray
diffraction
analysis
was
performed
confirm
phase
purity
crystal
structure
doped
material,
which
exhibited
characteristic
peaks
that
matched
well
structure.
Nb5+-doped
NVP@C@Nbx
materials
were
prepared
using
sol–gel
method
characterized
Diffraction
(XRD),
Scanning
Electron
Microscopy
(SEM),
Raman
Brunauer
-Emmett-Teller
(BET)
analysis.
First-principles
calculations
based
density
functional
theory.
VASP
PAW
methods
chosen
these
calculations.
GGA
PBE
framework
served
exchange-correlation
functional.
The
results
showed
unit
cell
consisted
six
structural
motifs,
each
containing
octahedral
VO6
tetrahedral
PO4
groups
form
polyanionomer
[V2(PO4)3]
along
c-axis
direction
groups,
had
Na1(6b)
Na2(18e)
sites.
And
PDOS
revealed
after
Nb
doping,
d
orbitals
atoms
also
contributed
electrons
concentrated
near
Fermi
surface.
Additionally,
decrease
effective
mass
indicated
could
move
more
freely
through
implying
an
enhancement
electron
mobility.
NVP@C@Nb
evaluated
cyclic
voltammetry
(CV),
galvanostatic
charge-discharge
tests,
impedance
spectroscopy
(EIS),
photoelectric
(XPS).
NVP@[email protected]
achieved
initial
high
114.27
mAhg−1,
106.38
mAhg−1
maintained
500
cycles
at
0.5C,
retention
composite
reached
impressive
90.22%.
resistance
enabling
it
create
vacancies
modulate
ultimately
enhancing
NVP.
outstanding
can
be
attributed
layer,
not
only
improves
electronic
conductivity
shortens
diffusion
length
Na+
electrons,
reduces
volume
changes
electrode
materials.
These
preliminary
suggested
as-obtained
novel
efficient
energy
storage.
Catalysts,
Год журнала:
2025,
Номер
15(1), С. 59 - 59
Опубликована: Янв. 10, 2025
This
work
examines
the
solar
photocatalytic
degradation
of
antibiotic
sulfamethoxazole
(SMX)
using
molybdenum
telluride
(MoTe2)-promoted
bismuth
oxychloride
(BiOCl).
Different
loadings
in
0–1%
range
on
BiOCl
were
synthesized
and
evaluated.
Although
presence
MoTe2
did
not
alter
either
adsorption
capacity
or
energy
gap
BiOCl,
photocatalyst
demonstrated
higher
activity
due
to
enhanced
separation
photogenerated
pairs.
The
0.5MoTe2/BiOCl
achieved
a
kinetic
constant
nearly
2.8
times
than
that
pure
leading
elimination
500
μg/L
SMX
within
90
min.
system’s
performance
was
under
neutral
acidic
conditions
lower
concentrations.
Based
experiments
with
radical
scavengers,
holes
appeared
be
dominant
species,
contribution
reactive
species
following
order
h+>O2•−/e−>1O2>HO•.
Interestingly,
different
water
matrices,
diminished
even
increased
by
20%,
likely
because
action
selectivity
secondary
generated
radicals.
retained
>
90%
its
after
three
sequential
experiments.
Finally,
four
transformation
products
from
photodegradation
identified
via
UHPLC-TOF-MS,
pathway
is
proposed.
