Ultrasonics Sonochemistry,
Journal Year:
2023,
Volume and Issue:
95, P. 106388 - 106388
Published: March 30, 2023
In
this
study,
a
novel
hydrodynamic
cavitation
unit
combined
with
glow
plasma
discharge
system
(HC-GPD)
was
proposed
for
the
degradation
of
pharmaceutical
compounds
in
drinking
water.
Metronidazole
(MNZ),
commonly
used
broad-spectrum
antibiotic,
selected
to
demonstrate
potential
system.
Cavitation
bubbles
generated
by
(HC)
can
provide
pathway
charge
conduction
during
(GPD).
The
synergistic
effect
between
HC
and
GPD
promotes
production
hydroxyl
radicals,
emission
UV
light,
shock
waves
MNZ
degradation.
Sonochemical
dosimetry
provided
information
on
enhanced
formation
radicals
compared
alone.
Experimental
results
showed
14%
15
min
alone
(solution
initially
containing
300
×
10−6
mol
L−1
MNZ).
experiments
HC-GPD
system,
90%
detected.
No
significant
differences
were
observed
acidic
alkaline
solutions.
also
studied
presence
inorganic
anions.
that
is
suitable
treatment
solutions
conductivity
up
1500
S
cm−1.
sonochemical
oxidant
species
0.15
10−3
H2O2
after
min.
For
concentration
reached
13
L−1.
Based
these
results,
combining
systems
water
demonstrated.
present
work
useful
their
application
antibiotics
Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(5), P. 830 - 830
Published: Feb. 23, 2023
Recently,
the
use
of
semiconductor-based
photocatalytic
technology
as
an
effective
way
to
mitigate
environmental
crisis
attracted
considerable
interest.
Here,
S-scheme
BiOBr/CdS
heterojunction
with
abundant
oxygen
vacancies
(Vo-BiOBr/CdS)
was
prepared
by
solvothermal
method
using
ethylene
glycol
a
solvent.
The
activity
investigated
degrading
rhodamine
B
(RhB)
and
methylene
blue
(MB)
under
5
W
light-emitting
diode
(LED)
light.
Notably,
degradation
rate
RhB
MB
reached
97%
93%
in
60
min,
respectively,
which
were
better
than
that
BiOBr,
CdS,
BiOBr/CdS.
It
due
construction
introduction
Vo,
facilitated
spatial
separation
carriers
enhanced
visible-light
harvest.
radical
trapping
experiment
suggested
superoxide
radicals
(·O2-)
acted
main
active
species.
Based
on
valence
balance
spectra,
Mott-Schottky(M-S)
DFT
theoretical
calculations,
mechanism
proposed.
This
research
provides
novel
strategy
for
designing
efficient
photocatalysts
constructing
heterojunctions
introducing
solving
pollution.
ACS Applied Nano Materials,
Journal Year:
2022,
Volume and Issue:
5(12), P. 18297 - 18306
Published: Nov. 23, 2022
Photocathodic
protection
has
evoked
great
attention
in
stainless
steel
protection;
however,
it
not
been
fully
studied
on
carbon
steel.
This
study
prepared
a
series
of
TiO2/Zn3In2S6
nanocomposite
films
by
combining
anodic
oxidation
with
hydrothermal
methods,
which
composition
and
morphology
together
optical
properties
have
characterized.
heterojunction
allowed
access
to
visible-light
absorbance.
Photoelectrochemical
tests
suggest
that
this
film
can
supply
effective
photocathodic
The
maximum
photogenerated
potential
drop
achieved
TiO2/Zn3In2S6-30
coupled
is
about
−0.49
V
even
after
80
h
illumination,
the
corresponding
photocurrent
1.91
mA·cm–2,
5
times
higher
than
pure
TiO2.
benefited
from
charge
separation
built-in
electric
field
heterojunction.
detailed
mechanism
discussed
paper.
