Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 6, 2024
As
a
contracted
porphyrin
analogue,
corrole
shows
more
acidic
and
trinegative/triprotic
nature
compared
with
in
the
field
of
coordination
chemistry.
However,
direct
introduction
into
metal–organic
framework
is
quite
difficult
due
to
its
lower
C2V
symmetry.
Herein,
we
report
one-pot
synthesis
series
porphyrin-based
multivariate
porphyrinic
frameworks
M1(TCPC)@M2-PCN-222
(M1
=
CuIII,
MnIII,
FeIVCl;
TCPC
5,10,15-tris(4-carboxyphenyl)
corrole;
M2
CoII,
CuII,
NiII,
FeIIICl)
applied
them
insertion
Si–H
bond
α-diazoacetates.
The
resultant
FeCl(TCPC)@Ni-PCN-222
displayed
highest
efficiency
turnover
number
796
based
on
amount
Fe,
which
could
be
reused
at
least
5
times
without
negligible
loss
activity.
Mechanistic
studies
disclosed
that
reactivity
came
from
synergistic
effect
between
FeCl(TCPC)
Ni-PCN-222,
acted
as
active
site
formation
metal-carbene,
whereas
Ni-PCN-222
helped
condense
silane
molecules
for
boosting
bond.
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(20), С. 6970 - 6980
Опубликована: Янв. 1, 2024
The
heterostructure
is
elaborately
designed
by
a
self-assembly
strategy,
wherein
Ag
16
(GSH)
9
nanoclusters
serve
as
photosensitizers
to
participate
in
interfacial
charge
transfer,
ultimately
resulting
significantly
enhanced
photoredox
catalysis.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(17), С. 20849 - 20857
Опубликована: Сен. 3, 2024
Combining
hydrogen
evolution
with
the
conversion
of
benzyl
alcohol
(BA)
into
benzaldehyde
(BAD)
could
provide
an
alternative
pathway
for
sufficiently
utilizing
photogenerated
electrons
and
holes
to
achieve
high
value
chemicals
fuels.
Herein,
a
ZnIn2S4
nanosheet
array/one-dimensional
Co9S8
hollow
nanotube
(Co9S8/ZnIn2S4)
composite
has
been
fabricated
by
simple
hydrothermal
solvent
thermal
methods.
Without
utilization
sacrificial
agents,
optimal
20%-Co9S8/ZnIn2S4
hybrid
catalyst
shows
superior
H2
production
3070.56
μmol·g–1·h–1
rate
93.2%,
which
are
4.1
2.9
times
higher
than
those
individual
ZnIn2S4,
respectively.
The
photocatalytic
performance
over
Co9S8/ZnIn2S4
nanocomposites
compared
bare
can
be
credited
introduction
nanotubes
as
cocatalyst,
offer
plentiful
active
sites,
improve
absorption
visible
light,
facilitate
separation
transfer
electron–hole
pairs
ZnIn2S4.
Multiple
cycling
experiments
indicate
good
durability
nanocomposite.
In
addition,
in
situ
electron
paramagnetic
resonance
indicates
that
α-hydroxybenzyl
radicals
key
intermediate
BA
BAD.
This
paper
is
intended
meaningful
reference
ingenious
design
photocatalyst
structure
building
high-performance
coupled
system
sufficient
holes.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 6, 2025
The
essential
nature
of
the
photocatalytic
process
is
charge
transfer.
To
optimize
spatial
separation
photogenerated
electron–hole
(e–-h+)
pairs
for
high-performance
catalytic
efficiency,
in
this
work,
we
have
successfully
prepared
hierarchical
core–shell
two-dimensional
(2D)/2D
ZnIn2S4@TpBpy
(ZIS@TpBpy)
with
well-matched
Z-scheme
interfacial
transfer
channels
uranium
(U(VI))
photoreduction.
electron
configuration
was
confirmed
by
internal
electric
field
(IEF)
formation
analysis,
XPS
characterization,
and
DMPO
spin-trapping
EPR
spectroscopy.
With
large
specific
surface
area
abundant
active
sites,
ZIS@TpBpy
composite
achieved
a
U(VI)
extraction
rate
94.08%.
In
addition,
removal
constant
(0.0137
min–1)
2.05
4.28
times
higher
than
those
TpBpy
(0.0067
ZnIn2S4
(0.0032
min–1),
respectively.
First,
combination
organic
inorganic
components
expanded
range
visible
light
absorption
utilization.
Afterward,
under
visible-light
irradiation,
more
e–-h+
dissociated
migrated
to
driven
IEF
heterostructure.
Simultaneously,
synergistic
effect
between
polarization
potential
generated
sites
(N
O
atoms)
framework
further
accelerated
depletion
translocation
pairs,
which
significantly
improved
efficiency
reduction
U(VI).
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(24), С. 11125 - 11134
Опубликована: Июнь 4, 2024
The
hydrogen
(H2)
evolution
rates
of
photocatalysts
suffer
from
weak
oxidation
and
reduction
ability
low
photogenerated
charge
carrier
separation
efficiency.
Herein,
by
combining
band-gap
structure
optimization
vacancy
modulation
through
a
one-step
hydrothermal
method,
In2O3
containing
oxygen
(Ov/In2O3)
is
simply
introduced
into
In2S3
to
promote
photocatalytic
evolution.
Specifically,
the
change
in
sulfur
source
ratio
can
induce
coexistence
Ov/In2O3
high-temperature
process.
Under
light
irradiation,
In2S3@Ov/In2O3-0.1
nanosheets
hold
remarkable
average
H2
rate
up
4.04
mmol
g–1
h–1,
which
32.14,
11.91,
2.25-fold
better
than
those
pristine
In2S3,
In2S3@Ov/In2O3-0.02,
In2S3@Ov/In2O3-0.25
nanosheets,
respectively.
ultraviolet–visible
(UV–vis)
diffuse
reflectance
photoluminescence
(PL)
spectra
reveal
that
formation
optimizes
accelerates
migration
In2S3@Ov/In2O3-x
Both
enhancement
are
responsible
for
improvement
performance.
This
work
provides
new
strategy
prepare
composite
metal
sulfide
oxide
method.
International Journal of Hydrogen Energy,
Год журнала:
2024,
Номер
79, С. 186 - 198
Опубликована: Июль 5, 2024
The
development
of
efficient
nanocomposites
represents
a
promising
strategy
for
enhancing
the
transfer
and
separation
photogenerated
carriers
within
metal-organic
frameworks
(MOFs)
photocatalytic
H2
generation.
In
this
study,
we
report,
first
time,
successful
fabrication
novel
CuGaS2@NH2-MIL-125(Ti)
nanocomposite
in
two-step
synthesis,
consisting
octahedral
NH2-MIL-125(Ti)
interspersed
with
flat
hexagonal
plates
CuGaS2.
effectively
mitigates
recombination
rate
electron-hole
pairs.
Notably,
most
active
composite
(containing
30
wt%
CuGaS2)
achieves
remarkable
hydrogen
generation
965.07
μmol/gcat,
surpassing
performance
CuGaS2
by
approximately
83
144
times,
respectively.
Additionally,
apparent
quantum
efficiency
material
at
wavelength
380
nm
is
9.07%.
This
study
provides
valuable
insights
into
design
I-III-VI2
compound-MOF
applications.
