Nitrogenative Degradation of Polystyrene Waste
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Owing
to
massive
production
and
poor
end-of-life
management,
plastic
waste
pollution
has
become
one
of
the
most
pressing
environmental
crises.
In
response
mounting
crisis,
past
several
decades
have
witnessed
development
numerous
methods
technologies
for
recycling.
However,
current
recycling
often
produce
low-quality
or
low-value
products,
making
it
difficult
recover
operating
costs.
To
this
end,
we
report
a
novel
preoxygenation-induced
strategy
nitrogenative
degradation
real-life
polystyrene
plastics
into
high-value
aromatic
nitrogen
compounds
in
cost-effective
manner.
Thus,
expensive
highly
demanding
benzonitrile
as
well
benzamide
were
obtained
up
74%
overall
isolated
yield
from
by
using
CuBr
catalyst,
O2
oxidant,
CH3CN
source.
Detailed
mechanistic
investigations
indicate
that
hydroxyl
radicals
activation
play
role
selective
aerobic
process.
Furthermore,
multiple
reaction
pathways
contribute
formation
benzamide.
Язык: Английский
Photochemical upcycling of polymers via visible light-driven C−H bond activation
Chemical Communications,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
This
mini-review
highlights
the
scientific
breakthroughs
in
photochemical
upcycling
polymers
through
oxidative
degradation
and
post-polymerization
modification
via
visible
light-driven
C–H
bond
activation.
Язык: Английский
Electrochemical analysis of PET microplastics and detection of elements in PET bottles
Microchemical Journal,
Год журнала:
2024,
Номер
208, С. 112422 - 112422
Опубликована: Дек. 12, 2024
Язык: Английский
Selective Degradation of Polyethylene Terephthalate Plastic Waste Using Iron Salt Photocatalysts
ChemSusChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 7, 2024
Abstract
Plastic
pollution
poses
a
significant
challenge
to
environmental
conservation.
Efficient
recycling
of
plastic
is
key
strategy
address
this
issue.
Polyethylene
terephthalate
(PET),
commonly
found
in
bottles,
represents
substantial
portion
waste.
Consequently,
the
efficient
degradation
and
PET
crucial
for
sustainable
development
society.
However,
implementation
methods
depolymerization
typically
necessitates
alkaline/acidic
pre‐treatment
energy
input
heating.
Here,
we
propose
gentle,
highly
photocatalysis
approach
selectively
degrading
waste
into
terephthalic
acid
(TPA)
high
yield
(up
99
%)
using
cost‐effective
iron
salts.
Notably,
method
achieved
excellent
selectivity
with
TON
TOF
values,
applying
oxygen
or
air
as
environmentally
friendly
oxidants.
In
addition,
solvent
can
be
recycled
without
compromising
TPA
yield,
large‐scale
reactions
performed
smoothly.
Язык: Английский