Angewandte Chemie International Edition,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 29, 2025
Abstract
The
development
of
porous
solids
for
gold
recovery
is
highly
desired
from
both
an
economical
and
environmental
point
view;
however,
the
design
solid
adsorbents
with
high
overall
performance
still
challenging.
Herein,
we
designed
three
copper(I)
cyclic
trinuclear
units,
Cu(I)‐CTUs,
based
covalent
metal‐organic
frameworks
(CMOFs)
by
networking
metal
clusters
dynamic
linkages.
These
CMOFs
deliver
a
adsorption
capacity
3687
mg
g
−1
,
ultra‐fast
kinetics
(i.e.,
removal
efficiency
>
99%
within
20
s),
excellent
selectivity
reusability.
In
addition,
they
can
be
readily
used
extraction
e‐waste.
Owing
to
rich
redox
properties
Cu‐CTUs,
these
show
sorption
mechanisms
including
adsorption,
chemical
reduction
photocatalytic
reduction.
Interestingly,
gold‐loaded
as
catalysts
hydration
alkynes
ketones
yields
(e.g.,
up
∼
95%
6
examples).
Chemical Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Palladium
(Pd),
a
rare
and
precious
metal,
is
highly
valued
due
to
its
non-renewable
nature
significant
cost.
Therefore,
recovering
palladium
from
industrial
wastewater
of
great
importance
but
remains
challenge.
Herein,
composite
aerogel
adsorbent
has
been
developed
by
linking
bipyridine
covalent
organic
framework,
termed
TpBpy,
with
chitosan
(CS)
through
robust
bonds.
The
resulting
TpBpy/CS
employed
for
the
selective
separation
recovery
at
low
concentrations
in
real
wastewater.
Experimental
results
reveal
that
maximum
adsorption
capacity
Pd(ii)
274.4
mg
g-1
pH
1.
Additionally,
even
presence
other
coexisting
ions
100
times
higher
than
Pd(ii),
efficiency
above
99%.
Mechanistic
investigations
indicate
aerogels
primarily
occurs
coordination
between
pyridine
N
as
well
electrostatic
interaction
protonated
amino
groups
Pd(ii).
Moreover,
demonstrates
exceptional
reusability,
maintaining
an
99%
after
nine
adsorption-desorption
cycles.
Overall,
promising
monolithic
efficient
acidic
selectivity,
demonstrating
substantial
potential
practical
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(45)
Published: July 26, 2024
Abstract
Diversifying
the
connecting
junctions
will
be
feasible
for
controllable
collaboration
of
metal–organic
frameworks
(MOFs)
and
covalent
organic
(COFs)
to
rationally
design
multifunction‐integrated
heterostructures
with
enhanced
performance,
yet
it
is
in
nascent
stage.
Herein,
by
intelligently
exploiting
polymerization
vinyl
group,
C−C
bond
innovatively
introduced
construct
core–shell
MOF@COF
adjustable
shell
thickness
rare
interpenetrated
structure.
The
unique
structure
endows
prepared
C−C‐linked
MIL‐68@COF−Vs
more
superior
visible‐light
harvesting
photogenerated
carrier
separation
capability,
leading
significantly
higher
photocatalytic
activity
faster
degradation
rate
than
pristine
MIL‐68‐C=Cs,
COF−V,
imine‐linked
MIL‐68‐NH
2
@COF−V.
Further,
customized
MIL‐68@COF−V
situ
grown
as
reusable
films
dramatically
boosted
performance
under
ambient
conditions,
which
realize
highly
efficient
tetracycline
within
15
min
(96.5
%),
rhodamine
6G
25
(97.6
phenol
40
(95.3
%)
solar
drive.
This
work
exhibits
distinctive
advantages
junction
construction,
highlights
application
prospect
rational‐designed
heterostructure
treatment
persistent
pollutants.
Materials Advances,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
This
review
presents
recent
advances
in
understanding
mercury
toxicity,
its
chemical
forms,
and
the
synthesis
of
covalent
organic
frameworks
(COFs),
introducing
COFs
for
first
time
as
a
method
removal.
