Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(15)
Опубликована: Янв. 28, 2023
Using
photocatalytic
oxidation
to
convert
basic
chemicals
into
high
value
compounds
in
environmentally
benign
reaction
media
is
a
current
focus
catalytic
research.
The
challenge
lies
gaining
controllability
over
product
formation
selectivity.
We
design
covalent
triazine
frameworks
as
heterogeneous,
metal-free,
and
recyclable
photocatalysts
for
visible-light-driven
switchable
selective
of
styrene
pure
water.
Selectivity
was
achieved
by
activation
or
deactivation
the
specific
photogenerated
oxygen
species.
same
photocatalyst,
H2
O2
,
benzaldehyde
obtained
with
99
%
conversion
selectivity
single
product.
highly
challenging
sensitive
epoxidation
carried
out
creating
peroxymonocarbonate
an
initial
agent
presence
bicarbonate,
which
led
oxide
up
76
near
quantitative
conversion.
This
study
demonstrates
preliminary
yet
interesting
example
simple
control
reactions
organic
Abstract
Covalent
organic
frameworks
(COFs)
are
porous
crystalline
polymeric
materials
formed
by
the
covalent
bonding
of
units.
The
abundant
units
library
gives
COFs
species
diversity,
easily
tuned
pore
channels,
and
sizes.
In
addition,
periodic
arrangement
endows
regular
highly
connected
which
has
led
to
rapid
development
in
membrane
separations.
Continuous
defect‐free
high
crystallinity
COF
membranes
is
key
their
application
separations,
most
important
issue
be
addressed
research.
This
review
article
describes
linkage
types
bonds,
synthesis
methods,
size
regulation
strategies
materials.
Further,
preparation
continuous
highlighted,
including
layer‐by‐layer
(LBL)
stacking,
situ
growth,
interfacial
polymerization
(IP),
solvent
casting.
applications
separation
fields
also
discussed,
gas
separation,
water
treatment,
nanofiltration,
ion
conduction,
energy
battery
membranes.
Finally,
research
results
summarized
future
prospect
for
outlined.
More
attention
may
paid
large‐scale
conductive
Advanced Materials,
Год журнала:
2023,
Номер
35(18)
Опубликована: Фев. 28, 2023
Metal-organic
framework
(MOF)-based
membranes,
featuring
potential
molecular
sieving
effects
and
therefore
capable
of
surmounting
the
ubiquitous
trade-off
between
membrane
selectivity
permeability,
hold
great
promise
for
multitudinous
chemical
separations.
Nevertheless,
it
remains
highly
challenging
large-area
fabrication
ultrathin
MOF
membranes
with
variable
thickness,
homogeneity,
preferential
orientation.
Herein,
this
work
reports
facile
(down
to
20
nm)
NUS-8
in
(>200
cm2
)
yet
homogeneity
texture
along
(00l)
direction
due
superior
solution
processability
as-synthesized
nanosheets.
The
resultant
good
adhesion
properties
certain
flexibility
exhibit
excellent
rejections
(>98%
Mg2+
Al3+
,
dyes
weights
larger
than
585.5
g
mol-1
toward
aqueous
separation
various
metal
ions
at
modest
permeance
(1-3.2
L
m-2
h-1
bar-1
well-aligned
structures.
Such
performance
outstands
among
polymetric
thin-film
composite
mixed
matrix
other
reported
literature.
mechanism
is
reasonably
discussed
based
on
experimental
theoretical
results.
This
study
opens
up
novel
perspectives
preparing
using
MOFs.
Chemical Society Reviews,
Год журнала:
2023,
Номер
52(17), С. 6075 - 6119
Опубликована: Янв. 1, 2023
The
adsorptive
separation
based
on
nonporous
adaptive
crystals
(NACs)
is
an
attractive
green
technology.
Herein,
we
comprehensively
summarize
recent
advances
in
various
supramolecular
hosts-based
NACs
for
hydrocarbon
separation.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
62(15)
Опубликована: Янв. 28, 2023
Using
photocatalytic
oxidation
to
convert
basic
chemicals
into
high
value
compounds
in
environmentally
benign
reaction
media
is
a
current
focus
catalytic
research.
The
challenge
lies
gaining
controllability
over
product
formation
selectivity.
We
design
covalent
triazine
frameworks
as
heterogeneous,
metal-free,
and
recyclable
photocatalysts
for
visible-light-driven
switchable
selective
of
styrene
pure
water.
Selectivity
was
achieved
by
activation
or
deactivation
the
specific
photogenerated
oxygen
species.
same
photocatalyst,
H2
O2
,
benzaldehyde
obtained
with
99
%
conversion
selectivity
single
product.
highly
challenging
sensitive
epoxidation
carried
out
creating
peroxymonocarbonate
an
initial
agent
presence
bicarbonate,
which
led
oxide
up
76
near
quantitative
conversion.
This
study
demonstrates
preliminary
yet
interesting
example
simple
control
reactions
organic
