Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 17, 2024
Abstract
The
solar‐driven
catalytic
recycling
of
plastics
has
recently
emerged
as
a
new
frontier
in
industry.
Nevertheless,
its
large‐scale
application
requires
the
catalysts
being
capable
strong
absorption
visible
and
near‐infrared
light,
strengthened
photothermal
efficiency,
high
activity
selective
toward
target
product,
enhanced
stability,
well
easy
separation
from
products.
In
this
work,
magnetic
Ni−MnO
x
nanocatalyst
(MN/C)
is
synthesized
via
pyrolysis
metal‐organic
framework
(MOF)
for
polyethylene
terephthalate
(PET)
to
bis(2‐hydroxyethyl)
(BHET).
Detailed
investigations
demonstrate
that
interaction
between
MnO
Ni
enables
H
2
spill‐over
Mn
species
electron
transfer
Ni,
where
plays
active
sites
promotes
efficiency
photo‐to‐heat
conversion,
result
significantly
performance.
Consequently,
PET
completely
converted
after
30
min
(0.84
W
cm
−2
)
at
190
°C,
with
BHET
selectivity
≈79%.
Moreover,
MN/C
been
successfully
applied
various
sources.
addition
promising
performance,
low‐cost
will
further
contribute
sustainable
plastics.
Chemical Communications,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Progress
in
chemical
recycling
of
waste
polyesters
(waste
plastic
refinery)
was
reviewed
and
prospected,
newly
reported
thermal
catalysis,
photocatalysis,
electrocatalysis,
biocatalysis
the
recycle
PET-based
product
were
introduced.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 3, 2025
Plastics
play
a
vital
role
in
modern
society,
but
their
accumulation
landfills
and
the
environment
presents
significant
risks
to
ecosystems
human
health.
In
addition,
discarding
of
plastic
waste
constitutes
loss
valuable
material.
While
usual
mechanical
recycling
method
often
results
reduced
material
quality,
chemical
offers
exciting
opportunities
valorize
into
compounds
interest.
Its
versatility
leans
on
broad
horizon
reactions
applicable,
such
as
hydrogenolysis,
hydrolysis,
alcoholysis,
or
aminolysis.
The
development
heterogeneous
supported
organocatalysts
has
enormous
potential
enhance
economic
industrial
viability
these
technologies,
reducing
cost
process
mitigating
its
global
environmental
impact.
This
review
summarizes
challenges
chemically
heteroatom-containing
plastics
through
catalysis,
covering
widely
used
polyesters
(notably
PET
PLA),
BPA-polycarbonate
(BPA-PC),
polyurethane
(PU),
polyamide
(PA),
polyether.
It
examines
limitations
various
solid
catalysts,
including
clays,
zeolites,
metal–organic
frameworks
well
immobilized
enzymes
(heterogeneous
biocatalysts),
for
that
facilitate
recovery
high-value
products.
By
reintroducing
products
economy
precursors,
this
approach
supports
more
sustainable
lifecycle
plastics,
aligning
with
principles
circular
economy.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 20, 2025
Abstract
The
unmatched
applications
of
plastic
commodities
are
evident
from
the
enormous
production,
reaching
over
400
million
tons
per
year
in
recent
times.
Contrastingly,
lack
proper
management
leads
to
a
large
accumulation
waste,
majorly
including
polyolefins
and
polyesters.
Conventional
methods
possess
significant
drawbacks
like
cost‐ineffectiveness
greenhouse
gas
emissions.
Over
last
decade,
chemical
processes
have
shown
promising
potential
for
but
only
hold
0.1%
share
recycling.
catalytic
offer
excellent
protocols
obtain
high‐value
liquid
fuels,
waxes,
chemicals
waste.
This
review
presents
an
elaborate
discussion
on
state
art
reductive
upcycling
polyolefins,
polyesters,
mixed
initially
discusses
alarming
statistics
plastics
conventional
approaches
followed
by
introduction
processes.
Further,
various
recently
reported
strategies
been
elaborated
detail
catalyst
deactivation,
technoeconomic
analysis,
life
cycle
assessment
deeper
understanding
current
this
research
field.
Finally,
detailed
summary
along
with
existing
challenges
countermeasures
is
discussed
open
new
avenues
waste
research.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
Chemical
depolymerization
and
recycling
of
poly(ethylene
terephthalate)
(PET)
constitute
a
sustainable,
resource-efficient,
environmentally
beneficial
approach,
which
requires
the
development
efficient
heterogeneous
catalysts.
Herein,
polyoxometalate(POM)-based
zinc-organic
networks
were
synthesized
as
dual-site
acid
catalysts
for
alcoholysis
PET
into
value-added
terephthalic
(TPA)
product,
with
formulas
[Zn2(μ2-Cl)(H2O)2(DTAB)3][PW12O40]·4H2O
(1),
[Zn2(DTAB)4][SiW12O40]·4H2O
(2),
[Zn2(H2O)4(DTAB)2.5][HBW12O40]·8H2O
(3)
(DTAB
=
1,4-di(4H-1,2,4-triazol-4-yl)benzene).
Structural
analysis
showed
that
compounds
1
2
composed
2D
Zn-ligand
embedded
POM
clusters
in
an
"egg-in-a-box"
manner
compound
3
consisted
3D
POM-based
host-guest
framework
constructed
by
{Zn2(H2O)4(N-N)3}
units
[HBW12O40]4-
clusters.
Three
incorporate
Zn2+
Lewis
centers
heteropolytungstate
clusters,
having
strength
order
>
2.
When
employed
catalysts,
three
exhibited
catalytic
performance
TPA
>92%
conversion
rate
>94%
selectivity
along
excellent
recyclability
structural
stability.
This
work
offers
novel
perspective
upcycling
plastic
waste.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 21, 2025
Abstract
The
increasing
use
of
e‐textiles
in
healthcare,
sports,
and
fashion
has
coined
a
new
frontier
scientific
innovation.
However,
unique
compositions
embedded
electronic
elements
these
pose
significant
challenges
for
end‐of‐life
management,
markedly
recycling
sustainable
design.
This
review
explores
the
landscape
design
e‐textiles,
underlining
need
innovative
approaches
to
mitigate
ecological
economic
impacts.
By
employing
systematic
approach,
paper
seeks
provide
comprehensive
understanding
current
state
smart
textiles,
technologies,
shortcomings,
identify
challenges,
propose
future
directions
textile
waste
management.
Starting
with
an
overview
textiles
their
growing
applications,
highlights
importance
industry
address
escalating
e‐waste
concerns.
It
evaluates
consequences
waste,
underscoring
urgency
efficient
systems.
Current
technologies
are
highlighted,
alongside
limitations
associated
material
composition,
inadequate
separation
techniques,
quality
degradation.
Emerging
such
as
advanced
de‐embedding
techniques
processes,
presented
promising
solutions
overcome
traditional
difficulties.
concept
sustainability
is
explored,
focusing
on
strategies
enhance
recyclability
reduce
environmental
footprints.
Additionally,
identifies
key
barriers
technological,
economic,
regulatory
hurdles,
proposes
opportunities
foster
circular
economy.
