Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(11), P. 4106 - 4113
Published: Jan. 1, 2024
The
modulation
of
two-dimensional
metal-organic
framework
(2-D
MOF)
nanosheet
stacking
is
an
effective
means
to
improve
the
properties
and
promote
application
nanosheets
in
various
fields.
Here,
we
employed
a
series
alcohol
guest
molecules
(MeOH,
EtOH
PrOH)
modulate
Zr-BTB
(BTB
=
benzene-1,3,5-tribenzoate)
generate
untwisted
stacking.
distribution
angles
was
statistically
analyzed
from
high-angle
annular
dark-field
(HAADF)
fast
Fourier
transform
(FFT)
images.
ratios
were
calculated,
such
as
77.01%
for
MeOH,
83.45%
EtOH,
85.61%
PrOH.
obtained
showed
good
separation
abilities
different
substituted
benzene
isomers,
superior
para
selectivity
excellent
column
stability
reusability.
Control
experiments
2-D
Zr-TCA
(TCA
4,4',4''-tricarboxytriphenylamine)
Zr-TATB
(TATB
4,4',4''-(1,3,5-triazine-2,4,6-triyl)tribenzoic
acid)
with
similar
pore
sizes
stronger
polarity
regulated
by
guests
exhibited
moderate
performance.
electron
microscopy
images
revealed
that
polar
regulation
dominantly
generated
twisted
Moiré
patterns.
Polar
molecules,
alcohols,
provide
strong
host-guest
interactions
during
MOF
stacking,
providing
opportunity
design
new
porous
materials
prospects.
Crystal Growth & Design,
Journal Year:
2024,
Volume and Issue:
24(5), P. 2235 - 2265
Published: Feb. 26, 2024
Metal-organic
frameworks
(MOFs),
formed
by
the
combination
of
both
inorganic
and
organic
components,
have
attracted
special
attention
for
their
tunable
porous
structures,
chemical
functional
diversities,
enormous
applications
in
gas
storage,
catalysis,
sensing,
etc.
Recently,
electronic
MOFs
like
electrocatalysis,
supercapacitors,
batteries,
electrochemical
etc.,
become
a
major
research
topic
MOF
chemistry.
However,
low
electrical
conductivity
most
represents
handicap
development
these
emerging
applications.
To
overcome
limitations,
different
strategies
been
developed
to
enhance
implementation
devices.
In
this
review,
we
outline
all
employed
increase
conduction
intrinsically
(framework-modulated)
extrinsically
(guests-modulated)
conducting
MOFs.
Small,
Journal Year:
2023,
Volume and Issue:
20(1)
Published: Aug. 29, 2023
Abstract
2D
metal‐organic
frameworks‐based
(2D
MOF‐related)
materials
benefit
from
variable
topological
structures,
plentiful
open
active
sites,
and
high
specific
surface
areas,
demonstrating
promising
applications
in
gas
storage,
adsorption
separation,
energy
conversion,
other
domains.
In
recent
years,
researchers
have
innovatively
designed
multiple
strategies
to
avoid
the
adverse
effects
of
conventional
methods
on
synthesis
high‐quality
MOFs.
This
review
focuses
latest
advances
creative
techniques
for
MOF‐related
both
top‐down
bottom‐up
perspectives.
Subsequently,
are
categorized
summarized
synthesizing
composites
their
derivatives.
Finally,
current
challenges
highlighted
faced
by
some
targeted
recommendations
put
forward
inspire
investigate
more
effective
methods.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(9), P. 7192 - 7203
Published: Feb. 22, 2024
Electrocatalytic
carbon
dioxide
reduction
reaction
(CO2RR)
toward
value-added
chemicals/fuels
has
offered
a
sustainable
strategy
to
achieve
carbon-neutral
energy
cycle.
However,
it
remains
great
challenge
controllably
and
precisely
regulate
the
coordination
environment
of
active
sites
in
catalysts
for
efficient
generation
targeted
products,
especially
multicarbon
(C2+)
products.
Herein
we
report
engineering
metal
centers
polymers
electroreduction
CO2
C2+
products
under
neutral
conditions.
Significantly,
Cu
polymer
with
Cu–N2S2
configuration
(Cu–N–S)
demonstrates
superior
Faradaic
efficiencies
61.2%
82.2%
ethylene
respectively,
compared
selective
formic
acid
on
an
analogous
Cu–I2S2
mode
(Cu–I–S).
In
situ
studies
reveal
balanced
formation
atop
bridge
*CO
intermediates
Cu–N–S,
promoting
C–C
coupling
production.
Theoretical
calculations
suggest
that
can
induce
electronic
modulations
sites,
where
d-band
center
is
upshifted
Cu–N–S
stronger
selectivity
Consequently,
displays
trend
while
Cu–I–S
favors
due
suppression
couplings
pathways
large
barriers.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(21)
Published: March 20, 2024
Abstract
Considering
that
CO
2
reduction
is
mostly
a
multielectron
reaction,
it
necessary
for
the
photocatalysts
to
integrate
multiple
catalytic
sites
and
cooperate
synergistically
achieve
efficient
photocatalytic
various
products,
such
as
C
hydrocarbons.
Herein,
through
crystal
engineering,
we
designed
constructed
metal–organic
framework‐derived
Zr/Ti
bimetallic
oxide
solid
solution
support,
which
was
confirmed
by
X‐ray
diffraction,
electron
microscopy
absorption
spectroscopy.
After
anchoring
Au
nanoparticles,
composite
photocatalyst
exhibited
excellent
performances
toward
syngas
(H
production
rates
of
271.6
260.6
μmol
g
−1
h
)
even
hydrocarbons
(C
H
4
6
6.80
4.05
).
According
control
experiments
theoretical
calculations,
strong
interaction
between
support
nanoparticles
found
be
beneficial
binding
intermediates
reducing
reduction,
highlighting
synergy
effect
system
with
active
sites.
Small,
Journal Year:
2024,
Volume and Issue:
20(24)
Published: Jan. 12, 2024
Abstract
The
demand
for
the
exploration
of
highly
active
and
durable
electro/photocatalysts
renewable
energy
conversion
has
experienced
a
significant
surge
in
recent
years.
Metal‐organic
frameworks
(MOFs),
by
virtue
their
high
porosity,
large
surface
area,
modifiable
metal
centers
ligands,
have
gained
tremendous
attention
demonstrated
promising
prospects
electro/photocatalytic
conversion.
However,
small
pore
sizes
limited
sites
3D
bulk
MOFs
hinder
wide
applications.
Developing
2D
with
tailored
thickness
aspect
ratio
emerged
as
an
effective
approach
to
meet
these
challenges,
offering
density
exposed
sites,
better
mechanical
stability,
assembly
flexibility,
shorter
charge
photoexcited
state
transfer
distances
compared
MOFs.
In
this
review,
synthesis
methods
most
up‐to‐date
are
first
overviewed,
highlighting
respective
advantages
disadvantages.
Subsequently,
systematic
analysis
is
conducted
on
identification
electronic
structure
modulation
catalytic
applications
conversion,
including
electrocatalysis
photocatalysis
(electro/photocatalysis).
Lastly,
current
challenges
future
development
toward
efficient
practical
electro/photocatalysis
proposed.
