Pervaporation
membrane
reactors
attract
much
attention
as
a
promising
system,
in
which
separation
and
reaction
are
carried
out
simultaneously
to
overcome
the
thermodynamic
equilibrium
limitation
increase
conversion
by
removing
one
or
several
synthesized
products.
For
this,
this
study
supported
carboxymethyl
cellulose
(CMC)
membranes
modified
with
Zn-based
metal
organic
frameworks
(Zn(SEB),
Zn(BIM),
Zn(BDC)Si)
were
developed.
Transport
properties
of
obtained
evaluated
pervaporation
quaternary
mixtures
(acetic
acid
(AcOH),
ethanol
(EtOH),
ethyl
acetate
(EtAc),
water)
various
compositions.
CMC/Zn(BIM)
membranes,
possessed
optimal
transport
characteristics,
tested
hybrid
process
"reaction+pervaporation"
using
batch
reactor
compared
data
without
membrane.
The
changes
structure
physicochemical
developed
studied
spectroscopic,
microscopic
methods,
thermogravimetric
analysis
measurements
contact
angles.
To
confirm
findings
obtained,
theoretical
consideration
computational
methods
for
was
out.
It
shown
that
application
CMC/Zn(BIM)(10
wt.%)
pervaporation-assisted
esterification
led
formation
more
than
5
times
larger
amount
EtAc
decreased
AcOH
EtOH
(50/50
M)
wt.%
Amberlyst
15
catalyst
at
60°C.
Polymers,
Journal Year:
2025,
Volume and Issue:
17(9), P. 1137 - 1137
Published: April 22, 2025
The
development
of
sustainable
nanofiltration
membranes
requires
alternatives
to
petroleum-derived
polymer
substrates.
This
study
demonstrates
the
successful
use
an
eco-friendly
cellulose
acetate/cellulose
nitrate
(CA/CN)
blend
substrate
for
fabricating
high-performance
modified
thin-film
composite
(mTFC)
membranes.
A
dense,
non-porous
polyamide
(PA)
selective
layer
was
formed
via
interfacial
polymerization
method
and
with
0.05–0.1
wt.%
HKUST-1
(Cu3BTC2,
MOF-199).
Characterization
by
FTIR,
XPS,
SEM,
AFM,
contact
angle
measurements
confirmed
CA/CN
substrate’s
suitability
TFC
membrane
fabrication.
incorporation
created
a
distinctive
ridge-and-valley
morphology
while
significantly
altering
PA
hydrophilicity
roughness.
mTFC
performance
could
be
fine-tuned
controlled
HKUST-1;
through
aqueous
phase
slowed
down
formation
reduced
its
thickness,
addition
organic
resulted
in
denser
due
agglomeration.
Thus,
either
enhanced
permeability
(123
LMH
bar−1
0.05
aqueous-phase
incorporation)
or
rejection
(>89%
dye
removal
organic-phase
were
achieved.
Both
also
exhibited
improved
heavy
metal
ion
(>91.7%),
confirming
their
industrial
potential.
Higher
loading
(0.1
wt.%)
caused
MOF
agglomeration,
reducing
performance.
approach
establishes
fabrication
route
tunable
targeting
specific
separation
tasks.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: April 26, 2025
Managing
heavy
metal
ions
in
wastewater
is
imperative
due
to
their
profound
impacts
on
human
health
and
the
ecosystem.
Membranes
endowed
with
adsorptive
features
present
a
highly
promising
solution
for
efficient
removal
of
contaminants
such
as
cadmium
(Cd2+),
nickel
(Ni2+),
lead
(Pb2+).
This
study
focuses
preparation
membranes
by
immobilizing
HKUST-1
metal-organic
framework
surface
polyethersulfone
(PES)
from
wastewater.
was
integrated
onto
membrane
via
gelatin-assisted
growth
in-situ
techniques,
further
incorporated
into
PES
polymer
matrix.
Comprehensive
characterization
these
modified
conducted
using
FESEM,
XRD,
FTIR,
EDAX,
contact
angle
analyses.
The
findings
revealed
that
PES/J
(gelatin-assisted
growth)
membrane,
combination
PES/I
(in-situ
exhibited
superior
efficacy
removal.
Notably,
pure
water
flux
gelatin-seed
increased
approximately
2.5-fold
compared
pristine
membrane.
demonstrated
high
fluxes
ranging
between
80
140
lit/m2.h.bar,
whereas
had
around
25-50
lit/m2.h.bar.
Furthermore,
uniform
dispersion
crystals
observed
prepared
method,
which
led
efficiency
100%
after
min
Cd2+
Ni2+
60
Pb2+
ions.
synthesis
nanocomposite
(ANMs)
growth,
mixed
matrix
approaches
demonstrate
potential
Polymers,
Journal Year:
2023,
Volume and Issue:
15(11), P. 2479 - 2479
Published: May 27, 2023
Although
though
ionic
liquids
(IL)
are
rapidly
emerging
as
highly
efficient
reagents
for
the
depolymerization
of
waste
plastics,
their
high
cost
and
adverse
impact
on
environment
make
overall
process
not
only
expensive
but
also
environmentally
harmful.
In
this
manuscript,
we
report
that
graphene
oxide
(GO)
facilitates
transformation
polyethylene
terephthalate
(PET)
to
Ni-MOF
(metal
organic
framework)
nanorods
anchored
reduced
(Ni–MOF@rGO)
through
NMP
(N-Methyl-2-pyrrolidone)-based
coordination
in
liquids.
Morphological
studies
using
scanning
electron
microscopy
(SEM)
transmission
(TEM)
showed
mesoporous
three-dimensional
structures
micrometer-long
substrates
(Ni–MOF@rGO
),
whereas
structural
XRD
Raman
spectra
demonstrated
crystallinity
nanorods.
Chemical
analysis
Ni–MOF@rGO
carried
out
X-ray
photoelectron
spectroscopy
nickel
moieties
exist
an
electroactive
OH-Ni-OH
state,
which
was
further
confirmed
by
nanoscale
elemental
maps
recorded
energy-dispersive
(EDS).
The
applicability
electro-catalyst
a
urea-enhanced
water
oxidation
reaction
(UOR)
is
reported.
Furthermore,
ability
our
newly
developed
NMP-based
IL
grow
MOF
nanocubes
carbon
nanotubes
nano-islands
fibers
Polymers,
Journal Year:
2023,
Volume and Issue:
15(18), P. 3834 - 3834
Published: Sept. 20, 2023
Recently,
there
has
been
an
active
search
for
new
modifiers
to
create
hybrid
polymeric
materials
various
applications,
in
particular,
membrane
technology.
One
of
the
topical
is
metal-organic
frameworks
(MOFs),
which
can
significantly
alter
characteristics
obtained
mixed
matrix
membranes
(MMMs).
In
this
work,
holmium-based
MOFs
(Ho-MOFs)
were
synthesized
polyether
block
amide
(PEBA)
modification
develop
novel
MMMs
with
improved
properties.
The
study
Ho-MOFs,
polymers
and
was
carried
out
by
methods
X-ray
phase
analysis,
scanning
electron
atomic
force
microscopies,
Fourier
transform
infrared
spectroscopy,
low-temperature
nitrogen
adsorption,
dynamic
kinematic
viscosity,
static
light
scattering,
gel
permeation
chromatography,
thermogravimetric
analysis
contact
angle
measurements.
Synthesized
Ho-MOFs
had
different
structures,
particle
forms
sizes
depending
on
ligand
used.
To
effect
Ho-MOF
modifier
transport
properties,
PEBA/Ho-MOFs
retention
capacity
evaluated
vacuum
fourth-stage
filtration
dye
removal
(Congo
Red,
Fuchsin,
Glycine
thymol
blue,
Methylene
Eriochrome
Black
T).
Modified
demonstrated
flux
rejection
coefficients
dyes
containing
amino
groups:
Congo
Fuchsin
(PEBA/Ho-1,3,5-H3btc
possessed
optimal
properties:
81%
68%
Red
filtration,
respectively,
0.7
L/(m2s)
flux).
Pervaporation
membrane
reactors
attract
much
attention
as
a
promising
system,
in
which
separation
and
reaction
are
carried
out
simultaneously
to
overcome
the
thermodynamic
equilibrium
limitation
increase
conversion
by
removing
one
or
several
synthesized
products.
For
this,
this
study
supported
carboxymethyl
cellulose
(CMC)
membranes
modified
with
Zn-based
metal
organic
frameworks
(Zn(SEB),
Zn(BIM),
Zn(BDC)Si)
were
developed.
Transport
properties
of
obtained
evaluated
pervaporation
quaternary
mixtures
(acetic
acid
(AcOH),
ethanol
(EtOH),
ethyl
acetate
(EtAc),
water)
various
compositions.
CMC/Zn(BIM)
membranes,
possessed
optimal
transport
characteristics,
tested
hybrid
process
"reaction+pervaporation"
using
batch
reactor
compared
data
without
membrane.
The
changes
structure
physicochemical
developed
studied
spectroscopic,
microscopic
methods,
thermogravimetric
analysis
measurements
contact
angles.
To
confirm
findings
obtained,
theoretical
consideration
computational
methods
for
was
out.
It
shown
that
application
CMC/Zn(BIM)(10
wt.%)
pervaporation-assisted
esterification
led
formation
more
than
5
times
larger
amount
EtAc
decreased
AcOH
EtOH
(50/50
M)
wt.%
Amberlyst
15
catalyst
at
60°C.
