Construction of Waste Paper-Chitosan-Based Membranes with pH-Tunable Surface Charge for Efficient Separation of Oil-in-Water Emulsion and Dye
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(29), С. 10854 - 10868
Опубликована: Июль 5, 2024
Developing
a
cost-effective,
versatile,
biodegradable,
and
biobased
membrane
is
crucial
for
the
sustainable
treatment
of
complex
wastewater.
In
this
work,
multifunctional
was
fabricated
from
polydopamine-modified
waste
paper
(WP@PDA)
hydrothermal
carbonized
chitosan
(HTCC),
through
simple
vacuum
filtration.
This
demonstrated
high
efficiency
in
separating
oil-in-water
emulsions
allowed
situ
dye
removal
under
controllable
pH
conditions.
The
results
showed
that
as-prepared
WP@PDA/HTCC
exhibited
superhydrophilic,
oil-resistant,
pH-tunable
surface
charge
features.
With
weight
ratio
WP@PDA
HTCC
6:2,
it
displayed
optimal
mechanical
properties
structural
stability
aqueous
environments.
As
expected,
achieved
outstanding
performance
different
at
0.05
bar
followed
by
satisfactory
flux
approximately
2400
L
m–2
h–1
bar–1
separation
around
99.5%.
Furthermore,
abundant
functional
groups
on
also
endowed
with
capability
both
cationic
anionic
dyes.
It
can
efficiently
eliminate
methyl
orange
(MO)
methylene
blue
(MEB)
dye-contaminated
wastewater
mainly
electrostatic
interactions.
Even
after
filtering
1550
MO
1650
MEB
simulated
using
membrane,
its
efficiencies
toward
dyes
remained
above
90.0%.
Interestingly,
WP@PDA/HTCC-1
presented
bidirectional
controlled
behaviors
mixture
suitable
solution
due
to
feature.
Most
importantly,
excellent
reusability
resistance
against
harsh
chemical
corrosions
without
losing
properties.
Therefore,
could
be
promising
material
treatment.
Язык: Английский
Multipocket Cage Enables the Binding of High-Order Bulky and Drug Guests Uncovered by MS Methodology
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(31), С. 21677 - 21688
Опубликована: Июль 23, 2024
Achieving
high
guest
loading
and
multiguest-binding
capacity
holds
crucial
significance
for
advancement
in
separation,
catalysis,
drug
delivery
with
synthetic
receptors;
however,
it
remains
a
challenging
bottleneck
characterization
of
high-stoichiometry
guest-binding
events.
Herein,
we
describe
large-sized
coordination
cage
(MOC-70-Zn
Язык: Английский
Selective Aliphatic Aldimine Formation and Stabilization by a Hydrophobic Capsule in Water
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
Imines
and
enamines
are
useful
intermediates
in
biochemical
aldol-type
reactions
since
their
acid/base
characteristics
accessible
near
neutrality.
However,
the
generation
of
aldimines
water
is
a
challenge
as
equilibrium
favors
components
alkyl
amines
aldehydes.
Here,
we
report
generation,
recognition,
protection
accomplished
by
water-soluble
capsule.
The
capsule
provides
well-defined
hydrophobic
cavity
isolating
from
medium
dry
seam
Se-N
chalcogen
bonds
instead
wet
hydrogen
water.
A
series
diverse
formed
situ
trapped
rapidly
(within
45
min
at
mM
concentrations)
D2O
with
more
than
90%
yields.
encapsulated
stable
for
least
one
month
under
ambient
conditions.
aliphatic
selectively
even
though
they
less
aromatic
imines
solution.
can
be
released
containers
competitive
guests
such
adamantane.
Язык: Английский
Modifying Parallel Excitations into One Framework for C(sp3)─H Bond Activation with Energy Combined More Than Two Photons
Advanced Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 25, 2024
Natural
photosynthesis
enzymes
utilize
energies
of
several
photons
for
challenging
oxidation
water,
whereas
artificial
photo-catalysis
typically
involves
only
single-photon
excitation.
Herein,
a
multiphoton
excitation
strategy
is
reported
that
combines
parallel
photo-excitations
with
photoinduced
electron
transfer
process
the
activation
C(sp
Язык: Английский
Stereochemical Control of Redox CoII/CoIII-Cages with Switchable Cotton Effects Based on Labile-Static States
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(29), С. 20414 - 20424
Опубликована: Июль 10, 2024
The
structural
dynamics
of
artificial
assemblies,
in
aspects
such
as
molecular
recognition
and
transformation,
provide
us
with
a
blueprint
to
achieve
bioinspired
applications.
Here,
we
describe
the
assembly
redox-switchable
chiral
metal-organic
cages
Λ
Язык: Английский
Modulating the Aggregation States of a Pd6L4 Cage for Selectivity Flipping during the Stereo‐Divergent Semi‐Hydrogenation of Alkynes
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 6, 2024
Abstract
An
enzyme‐mimicking
catalytic
system
has
been
established
using
a
singular
palladium‐based
octahedral
cage
as
the
supramolecular
reactor,
deftly
unlocking
off‐on‐off
selectivity
in
semi‐hydrogenation
of
alkynes.
Water
serves
critical
regulator,
modulating
catalyst
states,
reaction
rates,
and
endpoints.
The
choice
solvent
influences
activity
host–guest
binding
types
homogeneous
heterogeneous
catalysis,
effectively
modifying
steps
involved
Z
→
E
isomerization
during
Kinetic
inhibition
experiments
indicate
that
mimics
activation
characteristics
enzymes
towards
substrates,
enabling
selective
transformations
within
confined
environment.
utility
this
switchable
cage‐confined
catalysis
demonstrated
synthesis
modification
complex
biologically
active
molecules
with
controllable
/
selectivity.
This
work
sheds
light
on
design
control
artificial
counterparts
enzymes,
offering
fundamental
insights
into
factors
influencing
biological
macromolecules.
Язык: Английский
Modulating the Aggregation States of a Pd6L4 Cage for Selectivity Flipping during the Stereo‐Divergent Semi‐Hydrogenation of Alkynes
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 6, 2024
Abstract
An
enzyme‐mimicking
catalytic
system
has
been
established
using
a
singular
palladium‐based
octahedral
cage
as
the
supramolecular
reactor,
deftly
unlocking
off‐on‐off
selectivity
in
semi‐hydrogenation
of
alkynes.
Water
serves
critical
regulator,
modulating
catalyst
states,
reaction
rates,
and
endpoints.
The
choice
solvent
influences
activity
host–guest
binding
types
homogeneous
heterogeneous
catalysis,
effectively
modifying
steps
involved
Z
→
E
isomerization
during
Kinetic
inhibition
experiments
indicate
that
mimics
activation
characteristics
enzymes
towards
substrates,
enabling
selective
transformations
within
confined
environment.
utility
this
switchable
cage‐confined
catalysis
demonstrated
synthesis
modification
complex
biologically
active
molecules
with
controllable
/
selectivity.
This
work
sheds
light
on
design
control
artificial
counterparts
enzymes,
offering
fundamental
insights
into
factors
influencing
biological
macromolecules.
Язык: Английский
Boosted Circularly Polarized Luminescence of a Chiral Metallacage Through Co‐Assembly in Confined Microfluidic Environments
Advanced Functional Materials,
Год журнала:
2024,
Номер
35(3)
Опубликована: Сен. 20, 2024
Abstract
Chiral
metallacages,
with
their
precisely
distributed
luminescent
and
chiral
units
inherent
adaptive
chirality,
represent
an
ideal
framework
for
developing
circularly
polarized
luminescence
(CPL)‐active
materials.
Despite
potential,
enhancing
the
dissymmetry
factor
(
g
lum
)
of
metallacage‐based
materials
remains
a
significant
challenge.
In
this
study,
useful
approach
is
proposed
by
co‐assembling
donor
metallacage
Δ
4
/
Λ
‐Zn
A
achiral
acceptor
Nile
red
(NiR),
achieving
efficient
energy
chirality
transfer
resulting
in
enhanced
CPL
these
co‐assemblies.
More
importantly,
microfluidic
laminar
flow
utilized,
known
providing
stable
driving
forces
confined
spaces,
to
achieve
marked
improvement
values
co‐assemblies
within
polymethyl
methacrylate
(PMMA)
films.
Computational
fluid
dynamics
(CFD)
simulations
small‐angle
X‐ray
scattering
(SAXS)
experiments
confirm
that
films
containing
/NiR,
prepared
via
chips,
display
well‐defined
distributions
metallacages
NiR
due
controllable
assembly
process
facilitated
flow.
This
work
pioneers
new
methodology
significantly
enhance
materials,
opening
avenues
field
photonics.
Язык: Английский