Environmental Chemistry Letters,
Journal Year:
2022,
Volume and Issue:
20(3), P. 1839 - 1862
Published: Feb. 19, 2022
Abstract
Conventional
methods
to
clean
wastewater
actually
lead
incomplete
treatments,
calling
for
advanced
technologies
degrade
recalcitrant
pollutants.
Herein
we
review
solar
photo-oxidation
the
contaminants
in
industrial
wastewater,
with
focus
on
photocatalysts,
reactor
design
and
photo-Fenton
process.
We
discuss
limitations
due
low
visible-light
absorption,
catalyst
collection
reusability,
production
of
toxic
by-products.
Photodegradation
refractory
organics
by
light
is
controlled
pH,
photocatalyst
composition
bandgap,
pollutant
properties
concentration,
irradiation
type
intensity,
loading,
water
matrix.
Small,
Journal Year:
2023,
Volume and Issue:
19(18)
Published: Feb. 11, 2023
Abstract
Herein,
a
twisty
C‐TiO
2
/PCN
(CNT)
Step‐scheme
(S‐scheme)
heterojunction
is
fabricated
and
applied
to
degrade
ciprofloxacin
(CIP)
with
the
assistance
of
ultrasonic
vibration
visible
light
irradiation.
The
nitrogen‐rich
polymeric
carbon
nitride
(PCN)
can
not
only
induce
non‐centrosymmetric
structure
enhanced
polarity
for
better
piezoelectric
effect
but
also
provide
abundant
lone
pair
electrons
promote
n→π*
transition
during
photocatalysis.
Its
hybridization
particles
construct
S‐scheme
in
CNT.
During
piezo‐photocatalysis,
strain‐induced
polarization
electric
field
regulate
electron
migration
between
two
components,
resulting
more
effective
CIP
degradation.
With
synergistic
irradiation,
reaction
rate
constant
degradation
by
CNT
increases
0.0517
min
−1
,
which
1.86
times
that
photocatalysis
6.46
ultrasound.
This
system
exhibits
stable
decomposition
efficiency
under
interference
various
environmental
factors.
In
addition,
in‐depth
investigation
found
three
pathways
12
major
intermediates
reduced
toxicity
are
produced
after
reaction.
Hopefully,
construction
this
piezo‐photocatalytic
offers
inspiration
design
environmentally
functional
materials.
