Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
63(3)
Published: Nov. 30, 2023
Leveraging
electrochemistry
to
degrade
robust
polymeric
materials
has
the
potential
impact
society's
growing
issue
of
plastic
waste.
Herein,
we
develop
an
electrocatalytic
oxidative
degradation
polyethers
and
poly(vinyl
ethers)
via
electrochemically
mediated
hydrogen
atom
transfer
(HAT)
followed
by
polymer
promoted
molecular
oxygen.
We
investigated
selectivity
efficiency
this
method,
finding
our
conditions
be
highly
selective
for
polymers
with
hydridic,
electron-rich
C-H
bonds.
leveraged
reactivity
in
presence
polymethacrylates
polyacrylates
complete
selectivity.
Furthermore,
method
made
degradable
incorporation
ether
units
into
backbone.
quantified
products,
identifying
up
36
mol
%
defined
oxidation
including
acetic
acid,
formic
acetaldehyde,
extended
a
polyether-based
polyurethane
green
solvent.
This
work
demonstrates
facile,
electrochemically-driven
route
containing
functionalities.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(29), P. 20609 - 20645
Published: Jan. 1, 2024
The
photocatalytic
field
revolves
around
the
utilization
of
photon
energy
to
initiate
various
chemical
reactions
using
non-adsorbing
substrates,
through
processes
such
as
single
electron
transfer,
or
atom
transfer.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(1), P. 593 - 593
Published: Jan. 2, 2024
Plastic
production
has
increased
dramatically,
leading
to
accumulated
plastic
waste
in
the
ocean.
Marine
plastics
can
be
broken
down
into
microplastics
(<5
mm)
by
sunlight,
machinery,
and
pressure.
The
accumulation
of
organisms
release
additives
adversely
affect
health
marine
organisms.
Biodegradation
is
one
way
address
pollution
an
environmentally
friendly
manner.
microorganisms
more
adapted
fluctuating
environmental
conditions
such
as
salinity,
temperature,
pH,
pressure
compared
with
terrestrial
microorganisms,
providing
new
opportunities
pollution.
Pseudomonadota
(Proteobacteria),
Bacteroidota
(Bacteroidetes),
Bacillota
(Firmicutes),
Cyanobacteria
were
frequently
found
on
biofilms
may
degrade
plastics.
Currently,
diverse
plastic-degrading
bacteria
are
being
isolated
from
environments
offshore
deep
oceanic
waters,
especially
Pseudomonas
spp.
Bacillus
Alcanivoras
Actinomycetes.
Some
fungi
algae
have
also
been
revealed
degraders.
In
this
review,
we
focused
advances
biodegradation
their
enzymes
(esterase,
cutinase,
laccase,
etc.)
involved
process
polyethylene
terephthalate
(PET),
polystyrene
(PS),
(PE),
polyvinyl
chloride
(PVC),
polypropylene
(PP)
highlighted
need
study
sea.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: March 20, 2024
Abstract
Only
a
small
proportion
of
global
plastic
waste
is
recycled,
which
most
mechanically
recycled
into
lower
quality
materials.
The
alternative,
chemical
recycling,
enables
renewed
production
pristine
materials,
but
generally
comes
at
high
energy
cost,
particularly
for
processes
like
pyrolysis.
This
review
focuses
on
light-driven
approaches
chemically
recycling
and
upcycling
waste,
with
emphasis
reduced
consumption
selective
transformations
not
achievable
heat-driven
methods.
We
focus
challenging
to
recycle
backbone
structures
composed
mainly
C‒C
bonds,
lack
functional
groups
i.e.,
esters
or
amides,
that
facilitate
e.g.,
by
solvolysis.
discuss
the
use
light,
either
in
conjunction
heat
drive
depolymerization
monomers
via
photocatalysis
transform
polymers
valuable
molecules.
structural
prerequisites
these
are
outlined,
highlighting
their
advantages
as
well
limitations.
conclude
an
outlook,
addressing
key
challenges,
opportunities,
provide
guidelines
future
photocatalyst
(PC)
development.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(19)
Published: March 11, 2024
Abstract
Photocatalytic
upcycling
and
depolymerization
of
vinyl
polymers
have
emerged
as
promising
strategies
to
combat
plastic
pollution
promote
a
circular
economy.
This
mini
review
critically
summarizes
current
developments
in
the
degradation
including
polystyrene
poly(meth)acrylates.
Of
these
material
classes,
polymethacrylates
possess
unique
possibility
undergo
photocatalytic
back
monomer
under
thermodynamically
favourable
conditions,
thus
presenting
significant
advantages
over
traditional
thermal
strategies.
Our
perspective
on
formidable
challenges
potential
future
directions
are
also
discussed.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(14), P. 7309 - 7327
Published: Jan. 1, 2024
Oxidative
degradation
is
a
powerful
method
to
degrade
plastics
into
oligomers
and
small
oxidized
products.
While
thermal
energy
has
been
conventionally
employed
as
an
external
stimulus,
recent
advances
in
photochemistry
have
enabled
photocatalytic
oxidative
of
polymers
under
mild
conditions.
This
tutorial
review
presents
overview
degradation,
from
its
earliest
examples
emerging
strategies.
briefly
discusses
the
motivation
development
with
focus
on
underlying
mechanisms.
Then,
we
will
examine
modern
studies
primarily
relevant
catalytic
degradation.
Lastly,
highlight
some
unique
using
unconventional
approaches
for
polymer
such
electrochemistry.
JACS Au,
Journal Year:
2024,
Volume and Issue:
4(8), P. 2746 - 2766
Published: Aug. 8, 2024
Photocatalysis
is
a
versatile
and
rapidly
developing
field
with
applications
spanning
artificial
photosynthesis,
photo-biocatalysis,
photoredox
catalysis
in
solution
or
supramolecular
structures,
utilization
of
abundant
metals
organocatalysts,
sustainable
synthesis,
plastic
degradation.
In
this
Perspective,
we
summarize
conclusions
from
an
interdisciplinary
workshop
young
principal
investigators
held
at
the
Lorentz
Center
Leiden
March
2023.
We
explore
how
diverse
fields
within
photocatalysis
can
benefit
one
another.
delve
into
intricate
interplay
between
these
subdisciplines,
by
highlighting
unique
challenges
opportunities
presented
each
multidisciplinary
approach
drive
innovation
lead
to
solutions
for
future.
Advanced
collaboration
knowledge
exchange
across
domains
further
enhance
potential
photocatalysis.
Artificial
photosynthesis
has
become
promising
technology
solar
fuel
generation,
instance,
via
water
splitting
CO
