Abstract
Interfacial
charge‐carrier
complexation
is
a
bottleneck
problem
governing
the
gating
effect
of
organic
photoelectrochemical
transistor
(OPECT)
biosensors.
Therefore,
it
has
long
been
desired
to
enhance
OPECT
and
realize
maximum
transconductance
at
zero
bias.
In
this
study,
an
in
situ
engineered
heterojunction
nano‐enzymatic
catalytic
integration
OPECT‐colorimetric
dual‐mode
sensing
platform
developed
for
dibutyl
phthalate
detection.
Specifically,
highly
efficient
photoactive
CdIn
2
S
4
/MXene‐TiO
Z‐scheme
constructed
by
two‐step
engineering
promote
effective
separation
electron–hole
pairs
achieve
sensitive
poly(ethylene
dioxythiophene):poly(styrene
sulfonate)‐based
OPECT.
Target‐induced
rolling
circle
amplification
used
as
signal
unit,
Ag@Carbon
Sphere
(Ag─CS)
conditioning
element,
which
on
one
hand
causes
shunting
photogenerated
electrons,
leading
energy
transfer
reduced
gating.
At
same
time,
Ag─CS
acts
peroxidase‐mimicking
nanozyme
oxidize
TMB
discoloration.
Importantly,
prepared
sensor
exhibits
good
selectivity
high
sensitivity
detection
with
limit
0.08
fM
also
shows
superior
ability
real
water
bodies.
provides
ideal
choice
toxic
molecule
promising
application
environmental
monitoring
food
analysis.
Molecules,
Год журнала:
2024,
Номер
29(4), С. 854 - 854
Опубликована: Фев. 14, 2024
Organic
dyes
in
natural
waters
jeopardize
human
health.
Whether
semiconductor
materials
can
effectively
degrade
has
become
a
challenge
for
scientific
research.
Based
on
this,
this
study
rationally
prepared
different
nanocomposites
to
remove
organic
effectively.
Pure
SnO2
quantum
dots,
ZnO
nanosheets,
and
SnO2/ZnO
(ZS)
binary
are
using
the
hydrothermal
method.
Subsequently,
SnO2/ZnO@GO
(ZSG)
ternary
composites
containing
amounts
of
GO,
i.e.,
ZSG-5,
ZSG-15,
ZSG-25,
synthesized
by
an
ultrasonic
water
bath
method,
which
ZS
was
coupled
with
GO
form
Z-type
heterojunctions.
The
ZSG-15
exhibited
excellent
photocatalytic
activity
degradation
rhodamine
B
simulating
sunlight.
test
results
show
that
rate
is
about
7.6
times
higher
than
ZnO.
increase
attributed
synergistic
effect
improve
separation
efficiency
photogenerated
carriers
Notably,
large
specific
surface
area
increases
reactive
sites.
Compared
nanocomposites,
broadens
response
range
light
while
further
accelerating
electron
transport
improving
photoelectric
stability.
Advanced Sustainable Systems,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Abstract
This
work
reports
a
class
of
packable
composite
catalysts
in
form
submillimetric
patchy
particles
which
demonstrate
an
excellent
recyclability.
Those
are
simply
constructed
via
the
hydrothermal
treatment
dense
slurry
hydroxylated
ultrahigh
molecular
weight
polyethylene
(UHMWPE)
and
carbon
nitride
microtubes.
These
large‐sized
can
be
directly
packed
into
tea
bag
made
800
mesh
nylon
filter
cloth.
kind
porous
package
allows
arrival
light
on
meanwhile
significantly
benefits
recovery
photocatalysts
from
polluted
water.
Robust
adhesion
tubular
UHMWPE
powders
is
established
creating
synergies
between
van
der
Waals
force
hydrogen
bonding
for
maintaining
high
degrading
ability
these
even
after
30
cycles.
Catalysts,
Год журнала:
2025,
Номер
15(5), С. 458 - 458
Опубликована: Май 7, 2025
With
the
advancement
of
industrialization
and
urbanization,
arbitrary
emission
sewage
containing
TC-tetracycline
hexavalent
chromium
(Cr(VI))
possesses
a
serious
threat
to
both
ecological–environment
public
health.
However,
developing
low-toxicity
cost-effective
photocatalyst
for
simultaneous
elimination
these
two
pollutants
remains
formidable
task.
This
study
devised
photocatalytic
sample
(CSMX-X)
comprised
Copper(I)
sulfide
(Cu2S)
Titanium
carbide
(Ti3C2)
through
simple
solvothermal
method
applied
it
remove
Cr(VI).
The
CSMX-X
not
only
increases
specific
surface
area
from
2.7
m2·g−1
pure
Cu2S
30.65
m2·g−1,
but
also
effectively
addresses
problems
insufficient
separation
efficiency
photogenerated
holes
electrons
low
carrier
density.
an
individual
pollutant
(10
mg·L−1
Cr(VI)
or
20
TC-tetracycline)
can
reach
more
than
90%,
while
removal
mixed
decreases
by
12%.
Meanwhile,
copper
leaching
levels
under
different
pH
conditions
(0.032–0.676
mg·L−1)
are
considerably
lower
2
safety
standard
set
World
Health
Organization.
provides
valuable
perspectives
constructing
Cu2S-based
composite
photocatalysts
multiple
contaminants
in
real
aquatic
environments.
