Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 18, 2024
Abstract
Photocatalytic
conversion
has
emerged
as
a
promising
strategy
for
harnessing
renewable
solar
energy
in
the
valorization
of
plastic
waste.
However,
research
on
photocatalytic
transformation
plastics
into
valuable
nitrogen-containing
chemicals
remains
limited.
In
this
study,
we
present
visible-light-driven
pathway
polylactic
acid
(PLA)
alanine
under
mild
conditions.
This
process
is
catalyzed
by
defect-engineered
CdS
nanocrystals
synthesized
at
room
temperature.
We
observed
distinctive
volcano-shaped
relationship
between
sulfur
vacancy
content
and
corresponding
production
rate
reaching
up
to
4.95
mmol/g
catalyst/h
70
oC.
Ultraviolet-visible
(UV-vis)
spectra,
photocurrent
Fourier-transform
infrared
(FT-IR)
spectra
revealed
crucial
role
vacancies
enhancing
active
sites
surface.
Sulfur
vacancy-rich
exhibited
high
stability,
maintaining
catalytic
performance
morphology
over
several
runs,
effectively
converted
real-life
PLA
products.
work
not
only
highlights
facile
approach
fabricating
catalysts
but
also
presents
sustainable
method
upcycling
waste
chemicals.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 18, 2025
Waste
plastic
has
imposed
significant
burdens
on
marine
ecosystems.
Converting
into
high-value
products
via
photocatalysis
is
an
emerging
and
promising
approach,
but
its
low
activity
product
selectivity
pose
great
challenges.
Herein,
we
report
a
carbon
nitride-anchored
atomically
dispersed
Pt-B
dual-site
catalyst
(Pt
SA/BCN100)
for
the
photoreforming
of
polylactic
acid
(PLA)
chemicals
H2
in
seawater.
Experiments
DFT
calculations
reveal
that
significantly
enhanced
charge
transfer
occurs
between
Pt
site
B
site,
hole-rich
can
selectively
trigger
activation
cleavage
C-H
C-C
bonds
PLA
to
form
acetic
(AA),
while
electron-rich
drives
reduction
H
protons
H2.
As
result,
SA/BCN100
exhibits
high
evolution
rate
993
μmol
gcatal-1
h-1
AA
production
300
with
over
98%.
We
also
demonstrate
direct
g-scale
real-world
wastes
concentrations
microplastics
natural
Techno-economic
analysis
environmental
assessment
show
this
catalytic
system
reduce
emissions
potential
commercial
value.
Energy & Environmental Science,
Journal Year:
2024,
Volume and Issue:
17(20), P. 7649 - 7680
Published: Jan. 1, 2024
This
review
explores
the
role
of
atomic
metal
site
cocatalysts
in
photocatalysis
for
solar
energy
conversion,
focusing
on
recent
advances
single-atom
and
cluster
cocatalysts,
their
structure–activity
relationships,
key
applications.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(22), P. 5323 - 5323
Published: Nov. 12, 2024
Tandem
alkali-catalyzed
hydrolysis
and
alkaline
electrolysis
have
gradually
become
appealing
avenues
for
the
reformation
of
polyester
plastics
into
high-value-added
chemicals
green
hydrogen
with
remarkable
environmental
economic
benefits.
In
this
study,
an
electrochemical
upcycling
strategy
was
developed
electrocatalytic
oxidation
polylactic
acid
(PLA)
hydrolysate
valued
C
ChemPlusChem,
Journal Year:
2024,
Volume and Issue:
89(11)
Published: July 11, 2024
Abstract
With
the
escalating
demand
and
utilization
of
plastics,
considerable
attention
has
been
given
to
controlling
plastic
pollution.
Among
these
methodologies,
photocatalytic
upcycling
emerged
as
a
promising
method
for
management
due
its
energy‐saving
eco‐friendly
properties.
In
past
several
years,
great
efforts
have
devoted
conversion
variety
commercial
types.
These
encouraging
endeavors
foreshadow
continued
progression
application
in
this
field.
review,
recent
advancements
plastics
are
reviewed.
The
fundamentals
principles
deconstruction
first
introduced.
Then,
we
summarize
works
on
reforming
different
types
plastic,
including
polyolefins,
polyesters,
other
Finally,
some
challenges
possible
solutions
provided
development
plastics.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 18, 2024
Abstract
Photocatalytic
conversion
has
emerged
as
a
promising
strategy
for
harnessing
renewable
solar
energy
in
the
valorization
of
plastic
waste.
However,
research
on
photocatalytic
transformation
plastics
into
valuable
nitrogen-containing
chemicals
remains
limited.
In
this
study,
we
present
visible-light-driven
pathway
polylactic
acid
(PLA)
alanine
under
mild
conditions.
This
process
is
catalyzed
by
defect-engineered
CdS
nanocrystals
synthesized
at
room
temperature.
We
observed
distinctive
volcano-shaped
relationship
between
sulfur
vacancy
content
and
corresponding
production
rate
reaching
up
to
4.95
mmol/g
catalyst/h
70
oC.
Ultraviolet-visible
(UV-vis)
spectra,
photocurrent
Fourier-transform
infrared
(FT-IR)
spectra
revealed
crucial
role
vacancies
enhancing
active
sites
surface.
Sulfur
vacancy-rich
exhibited
high
stability,
maintaining
catalytic
performance
morphology
over
several
runs,
effectively
converted
real-life
PLA
products.
work
not
only
highlights
facile
approach
fabricating
catalysts
but
also
presents
sustainable
method
upcycling
waste
chemicals.
