Journal of Nanobiotechnology,
Год журнала:
2022,
Номер
20(1)
Опубликована: Май 2, 2022
Abstract
As
a
typical
class
of
crystalline
porous
materials,
metal–organic
framework
possesses
unique
features
including
versatile
functionality,
structural
and
compositional
tunability.
After
being
reduced
to
two-dimension,
ultrathin
metal-organic
layers
possess
more
external
excellent
properties
favoring
various
technological
applications.
In
this
review
article,
the
nanosheets
benefiting
from
planar
topography
were
highlighted,
involving
light
transmittance,
electrical
conductivity.
Moreover,
design
strategy
fabrication
methodology
summarized
covering
discussions
on
their
applicability
accessibility,
especially
for
porphyritic
nanosheet.
The
current
achievements
in
bioapplications
two-dimensional
frameworks
presented
comprising
biocatalysis,
biosensor,
theranostic,
with
an
emphasis
reactive
oxygen
species-based
nanomedicine
oncology
treatment.
Furthermore,
challenges
confronting
utilization
future
opportunities
emerging
research
frontiers
presented.
Graphical
Journal of the American Chemical Society,
Год журнала:
2021,
Номер
144(4), С. 1681 - 1689
Опубликована: Дек. 29, 2021
The
removal
of
carbon
dioxide
(CO2)
from
acetylene
(C2H2)
is
a
critical
industrial
process
for
manufacturing
high-purity
C2H2.
However,
it
remains
challenging
to
address
the
tradeoff
between
adsorption
capacity
and
selectivity,
on
account
their
similar
physical
properties
molecular
sizes.
To
overcome
this
difficulty,
here
we
report
novel
strategy
involving
regulation
hydrogen-bonding
nanotrap
pore
surface
promote
separation
C2H2/CO2
mixtures
in
three
isostructural
metal-organic
frameworks
(MOFs,
named
MIL-160,
CAU-10H,
CAU-23,
respectively).
Among
them,
which
has
abundant
acceptors
as
nanotraps,
can
selectively
capture
molecules
demonstrates
an
ultrahigh
C2H2
storage
(191
cm3
g-1,
or
213
cm-3)
but
much
less
CO2
uptake
(90
g-1)
under
ambient
conditions.
amount
MIL-160
remarkably
higher
than
those
other
two
MOFs
(86
119
g-1
CAU-10H
respectively)
same
More
importantly,
both
simulation
experimental
breakthrough
results
show
that
sets
new
benchmark
equimolar
terms
potential
(Δqbreak
=
5.02
mol/kg)
productivity
(6.8
mol/kg).
In
addition,
situ
FT-IR
experiments
computational
modeling
further
reveal
unique
host-guest
multiple
interaction
key
factor
achieving
extraordinary
superior
selectivity.
This
work
provides
powerful
approach
extremely
gas
separation.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Авг. 25, 2022
Abstract
Atmospheric
ozone
has
long
been
a
threat
to
human
health,
however,
rational
design
of
high-performance
O
3
-decomposition
catalysts
remains
challenging.
Herein,
we
demonstrate
the
great
potential
series
isomorphous
bimetallic
MOFs
denoted
as
PCN-250(Fe
2
M)
(M
=
Co
2+
,
Ni
Mn
)
in
catalytic
decomposition.
Particularly,
Co)
showed
100%
removal
efficiency
for
continuous
air
flow
containing
1
ppm
over
wide
humidity
range
(0
‒
80%
RH)
at
room
temperature.
Mechanism
studies
suggested
that
high
performance
originated
from
introduction
open
Co(II)
sites
well
its
porous
structure.
Additionally,
low
pressures
around
10
Pa,
exhibited
adsorption
capacities
(89
241
mg
g
−1
most
VOCs,
which
are
not
only
class
hazardous
pollutants
but
also
precursor
.
This
work
opens
up
new
avenue
develop
advanced
purification
materials
and
VOCs
one.
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(7), С. 3200 - 3209
Опубликована: Фев. 9, 2022
The
discovery
of
high-performance
adsorbents
for
highly
efficient
separation
xenon
from
krypton
is
an
important
but
challenging
task
in
the
chemical
industry
due
to
their
similar
size
and
inert
spherical
nature.
Herein,
we
report
two
robust
radiation-resistant
Hofmann-type
MOFs,
Co(pyz)[Ni(CN)4]
Co(pyz)[Pd(CN)4]
(termed
as
ZJU-74a-Ni
ZJU-74a-Pd),
featuring
oppositely
adjacent
open
metal
sites
perfect
pore
sizes
(4.1
3.8
Å)
comparable
kinetic
diameter
(4.047
Å),
affording
benchmark
binding
affinity
polarizable
Xe
gas.
These
materials
thus
exhibit
both
record-high
uptake
capacities
(89.3
98.4
cm3
cm-3
at
296
K
0.2
bar)
Xe/Kr
selectivities
(74.1
103.4)
ambient
conditions,
all
which
are
highest
among
state-of-the-art
reported
so
far.
locations
molecules
within
have
been
visualized
by
single-crystal
X-ray
diffraction
studies,
centers
combined
with
right
aperture
can
construct
a
unique
sandwich-like
site
offer
unprecedented
ultrastrong
Ni2+-Xe-Ni2+
interactions
xenon,
leading
record
capture
capacity
selectivity.
excellent
ZJU-74a-Pd
was
verified
breakthrough
experiments
gas
mixtures,
providing
unprecedentedly
high
(4.63
mmol
cm-3)
productivity
(214
g-1).
Angewandte Chemie International Edition,
Год журнала:
2022,
Номер
61(41)
Опубликована: Авг. 18, 2022
Developing
porous
materials
to
overcome
the
trade-off
between
adsorption
capacity
and
selectivity
for
C2
H2
/CO2
separation
remains
a
challenge.
Herein,
we
report
stable
HKUST-1-like
MOF
(ZJU-50a),
featuring
large
cages
decorated
with
high
density
of
supramolecular
binding
sites
achieve
both
storage
selectivity.
ZJU-50a
exhibits
one
highest
(192
cm3
g-1
)
concurrently
(12)
at
298
K
1
bar.
Single-crystal
X-ray
diffraction
studies
on
gas-loaded
crystal
unveil
that
incorporated
can
selectively
take
up
molecule
but
not
CO2
result
in
Breakthrough
experiments
validated
its
performance
mixtures,
providing
recovery
84.2
L
kg-1
99.5
%
purity.
This
study
suggests
novel
strategy
engineering
into
MOFs
this
separation.
