Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Aug. 15, 2024
Metal-organic
frameworks
(MOFs)
have
been
extensively
considered
as
one
of
the
most
promising
types
porous
and
crystalline
organic-inorganic
materials,
thanks
to
their
large
specific
surface
area,
high
porosity,
tailorable
structures
compositions,
diverse
functionalities,
well-controlled
pore/size
distribution.
However,
developed
MOFs
are
in
powder
forms,
which
still
some
technical
challenges,
including
abrasion,
dustiness,
low
packing
densities,
clogging,
mass/heat
transfer
limitation,
environmental
pollution,
mechanical
instability
during
process,
that
restrict
applicability
industrial
applications.
Therefore,
recent
years,
attention
has
focused
on
techniques
convert
MOF
powders
into
macroscopic
materials
like
beads,
membranes,
monoliths,
gel/sponges,
nanofibers
overcome
these
challenges.Three-dimensional
(3D)
printing
technology
achieved
much
interest
because
it
can
produce
many
high-resolution
with
complex
shapes
geometries
from
digital
models.
this
review
summarizes
combination
different
3D
strategies
MOF-based
for
fabricating
3D-printed
monoliths
applications,
emphasizing
water
treatment
gas
adsorption/separation
Herein,
various
fabrication
such
direct
ink
writing,
seed-assisted
in-situ
growth,
coordination
replication
solid
precursors,
matrix
incorporation,
selective
laser
sintering,
light
processing,
described
relevant
examples.
Finally,
future
directions
challenges
also
presented
better
plan
trajectories
shaping
improved
control
over
structure,
composition,
textural
properties
monoliths.
Separation and Purification Technology,
Journal Year:
2024,
Volume and Issue:
353, P. 128466 - 128466
Published: June 16, 2024
Pressure
swing
adsorption
is
widely
applied
in
industry
for
hydrogen
purification,
methane
recovery,
air
separation,
biomass
upgrading,
CO2
to
name
a
few.
To
further
improve
the
attractiveness
of
pressure
systems,
ongoing
research
focusses
on
ways
intensify
process.
In
particular,
productivity
and
reduce
footprint
system
consequently
leading
reduced
capital
operating
costs.
The
proposed
solution
known
as
fast
or
rapid
cycling
which,
implies,
means
cycle
time.
However,
there
are
some
challenges
overcome
such
mass
transfer
limitations
separation
efficiency,
well
increased
drop
due
high
superficial
velocities
typical
cycling.
Adsorbent
shaping
has
potential
these
it
being
regarded
promising
process
intensification
processes
offering
great
flexibility
designing
optimized
cycles
with
improved
performance.
Various
adsorbent
shapes
monoliths,
laminates,
foams
fibers
have
been
studied
literature
monolith
structures
most
popular.
Most
published
topic
concentrated
material
development
lab-scale
testing,
modeling,
manufacturing
through
3D
printing
techniques.
Performance
evaluations
generally
target
enhanced
kinetics
only
few
papers
addressing
broader
context
economic
assessments
gained
benefits
using
structured
adsorbents
place
beads
pellets.
Although,
sorbent
very
developing
field,
still
significant
work
be
done
reach
its
full
potential.
Further
should
go
beyond
shape
optimization
testing
pilot/large-scale
under
cyclic
conditions.
this
context,
newly
developed
artificial
intelligence
tools
show
promise
intensified
based
by
speeding
up
computation
time
complex
routines.
date,
limited
industrial
applications
sorbents.
One
main
hurdles
large
scale
deployments
labor
intensive
preparation
methods
currently
available,
Thus,
easy,
cost-effective
options
automatization,
will
expedite
large-scale
implementation
processes.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(2), P. e24737 - e24737
Published: Jan. 1, 2024
Novel
and
eco-friendly
solutions
are
extensively
needed
for
wastewater
treatment.
This
work
capitalizes
on
the
combination
of
waste
vitrification
additive
manufacturing
to
produce
an
efficient
photocatalyst
specific
purpose.
Fine
powders
waste-derived
glass,
containing
Fe3O4
inclusions,
by
simple
suspension
(for
a
solid
loading
65
wt
%)
in
alkaline
solution
(5
M
NaOH),
were
transformed
into
pastes
direct
ink
writing.
3D-printed
reticulated
scaffolds
stabilized
progressive
hardening
zeolite-like
gel,
formed
glass/solution
interaction,
at
nearly
room
temperature.
The
printed
successfully
tested
removal
methylene
blue,
realized
combining
high
sorption
capacity
gel
with
catalytic
activity
magnetite
under
UV
light.
A
complete
degradation
blue
is
achieved
90
min
exposure,
comparing
favorably
other
reported
photocatalytic
materials,
requiring
from
60
360
min.
was
several
cycles,
no
significant
degradation.
In
words,
material
can
be
reused
multiple
times,
remediate
wastewaters,
evident
benefits
minimization.
