ACS Applied Materials & Interfaces,
Год журнала:
2023,
Номер
15(35), С. 41466 - 41475
Опубликована: Авг. 25, 2023
Recovering
light
alkanes
from
natural
gas
is
a
critical
but
challenging
process
in
petrochemical
production.
Herein,
we
propose
postmodification
strategy
via
simultaneous
metal/ligand
exchange
to
prepare
multivariate
metal-organic
frameworks
with
enhanced
capacity
and
selectivity
of
ethane
(C2H6)
propane
(C3H8)
for
their
recovery
methane
(CH4)
as
the
primary
component.
By
utilizing
Kuratowski-type
secondary
building
unit
CFA-1
scaffold,
namely,
{Zn5(OAc)4}6+,
Zn2+
metal
ions
OAc-
ligands
were
simultaneously
exchanged
by
other
transition
halogen
under
mild
conditions.
Inspiringly,
this
treatment
can
give
rise
improved
C2H6
C3H8
without
noticeable
increase
CH4
uptake,
consequently,
it
resulted
significantly
toward
C2H6/CH4
C3H8/CH4.
In
particular,
adjusting
species
amount
modulator,
optimal
sample
CFA-1-NiCl2-2.3
demonstrated
maximum
capacities
(5.00
mmol/g)
(8.59
mmol/g),
increased
29
32%
compared
that
CFA-1.
Moreover,
compound
exhibited
excellent
separation
performance
C3H8/CH4,
high
uptake
ratios
6.9
11.9
at
298
K
1
bar,
respectively,
superior
majority
reported
MOFs.
Molecular
simulations
applied
unravel
mechanism
Furthermore,
remarkable
thermal/chemical
robustness,
moderate
isosteric
heat,
fully
reproducible
breakthrough
experiments
confirmed
on
CFA-1-NiCl2-2.3,
indicating
its
great
potential
alkane
gas.
Advanced Materials,
Год журнала:
2023,
Номер
35(48)
Опубликована: Июнь 29, 2023
The
use
of
conductive
MOFs
(c-MOFs)
in
zinc-based
batteries
has
been
a
popular
research
direction.
Zinc-based
are
widely
used
with
the
advantages
high
specific
capacity
and
safety
stability,
but
they
also
face
many
problems.
c-MOFs
have
excellent
conductivity
compared
other
primitive
MOFs,
therefore
better
applications
batteries.
In
this
paper,
transfer
mechanisms
unique
charges
c-MOFs:
hop
transport
band
transport,
respectively,
discussed
way
electron
is
further
addressed.
Then,
various
ways
to
prepare
introduced,
among
which
solvothermal,
interfacial
synthesis,
postprocessing
methods
used.
addition,
terms
their
role
performance
different
types
Finally,
current
problems
prospects
for
future
development
presented.
Limited
by
preparation
time
and
ligand
solubility,
synthetic
protocols
for
cyclodextrin-based
metal-organic
framework
(CD-MOF),
as
well
subsequent
derived
materials
with
improved
stability
properties,
still
remains
a
challenge.
Herein,
an
ultrafast,
environmentally
friendly,
cost-effective
microwave
method
is
proposed,
which
induced
graphene
oxide
(GO)
to
design
CD-MOF/GOs.
This
applicable
technique
can
control
the
crystal
size
of
CD-MOFs
from
macro-
nanocrystals.
CD-MOF/GOs
are
investigated
new
type
supramolecular
adsorbent.
It
selectively
adsorb
dye
molecule
methylene
green
(MG)
owing
synergistic
effect
between
hydrophobic
nanocavity
CDs,
abundant
O-containing
functional
groups
GO
in
composites.
Following
high
temperature
calcination,
resulting
N,
S
co-doped
porous
carbons
exhibit
capacitance
501
F
g-1
at
0.5
A
,
stable
cycling
90.1%
capacity
retention
after
5000
cycles.
The
carbon
exhibits
good
electrochemical
performance
due
its
surface
containing
numerous
electrochemically
active
sites
adsorption
carbonization.
strategy
incorporating
variety
molecules
into
optimizes
properties
their
materials,
furthering
development
toward
fabrication
zeitgeisty
high-performance
energy
storage
devices.
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(34), С. 15813 - 15820
Опубликована: Авг. 14, 2024
The
urea
oxidation
reaction
(UOR)
is
an
alternative
anodic
for
hydrogen
generation
via
water
splitting.
significance
of
UOR
lies
in
both
H2
production
and
the
decontamination
urea-containing
wastewater.
Commercial
electrocatalysts
this
field
are
generally
based
on
noble
metals
show
several
limitations.
Bimetal–organic
frameworks
(BMOFs)
can
be
excellent
candidates
replacement
noble-metal-based
catalysts
beacuse
their
promising
features,
such
as
a
tunable
structure,
high
surface
area,
abundant
sites
electrocatalysis.
In
study,
series
nickel–cobalt
BMOFs
(Nix-Coy-BMOFs:
x
y
refer
to
molar
fraction
Ni
Co)
were
synthesized
applied
UOR.
particular,
Ni0.15Co0.85-MOF
material
with
structure
similar
that
its
parent
Co-MOF,
revealed
exceptional
electrocatalytic
performance,
evidenced
by
low
values
overpotential
(1.33
V
vs
RHE
at
10
mA
cm–2),
TOF
(0.47
s–1),
Tafel
slope
(125
mV
dec–1).
At
40
cm–2
current
density,
also
showed
stability
during
72
h
tests.
This
performance
NiCo-BMOF
assigned
synergistic
effect
between
Co
Ni,
active
sites,
porosity,
all
which
result
increased
rate
due
acceleration
charge
mass
transfers.
Thus,
present
work
introduces
efficient
noble-metal-free
energy
from
urea-based
Analytical Chemistry,
Год журнала:
2025,
Номер
97(1), С. 928 - 935
Опубликована: Янв. 3, 2025
Neonicotinoid
insecticides
have
been
widely
applied
in
modern
agriculture
to
improve
crop
productivity,
but
their
residues
adverse
impacts
on
the
environment
and
human
health.
Hence,
address
these
issues,
a
portable
self-powered/colorimetric
dual-mode
sensing
platform
was
developed
for
simple,
rapid,
precise,
sensitive
on-site
detection
of
acetamiprid
(ATM)
vegetables.
In
this
case,
multifunctional
bioconjugate
with
specific
recognition
capability,
excellent
enzyme-like
activity,
loading
capacity
is
key
design.
Using
an
Eppendorf
(EP)
tube
as
miniaturized
laboratory,
bioconjugates
colorimetric
test
strip
were
integrated
into
EP
tube,
combined
nanozyme-based
self-powered
(with
area
1.5
×
cm2),
accurate
ATM
achieved,
limits
low
2.9
fg·mL–1
(self-powered
method)
31.5
(colorimetry),
respectively.
Notably,
we
simulated
actual
insecticidal
situation
based
field
application
concentration
quantified
pesticide
The
relative
errors
our
method
standard
high-performance
liquid
chromatography
0.15%
(the
1.8%
high
sensitivity
accuracy
opened
up
new
avenue
development
residue
analysis
next
generation
agricultural
products.
