Journal of Dispersion Science and Technology,
Journal Year:
2023,
Volume and Issue:
unknown, P. 1 - 10
Published: Dec. 8, 2023
In
this
project,
Nickle
(Ni)
nanoparticles
(NPs)
were
synthesized
by
co-precipitation
methodology
using
nickel
acetate
as
precursor
and
methanol,
ethylene
glycol
1,2-Butanediol
solvents.
Resulting
products
analyzed
XRD
SEM,
which
revealed
the
morphological
changes
occurring
varying
conditions
of
solvents,
synthesis
temperature
time.
Alteration
in
solvents
results
change
morphology
NPs
that
transformed
from
irregular
anisotropic
to
spherical
one
was
evident
SEM
mircographs.
After
that,
these
samples
catalytic
potentials
explored
them
for
photocatalysis
Rhodamine
B
dye
batch
mode
kinetic
investigation
data
indicated
their
feasibility
be
employed
catalyst
like
standard
NaBH4
conventional
method
following
pseudo
first
order
kinetics.
Radical
scavenger
experiments
.OH
radicals
play
main
role
Rh
Ni
NPs.
Materials,
Journal Year:
2024,
Volume and Issue:
17(24), P. 6225 - 6225
Published: Dec. 20, 2024
The
rational
design
of
heterojunction
photocatalysts
enabling
fast
transportation
and
efficient
separation
photoexcited
charge
carriers
is
the
key
element
in
visible
light-driven
photocatalyst
systems.
Herein,
we
develop
a
unique
Z-scheme
consisting
NiMoO4
microflowers
(NMOF)
ZIF67,
referred
to
as
ZINM
(composite),
for
purpose
antibiotic
degradation.
ZIF67
was
produced
by
solution
process,
whereas
NMOF
synthesized
via
coprecipitation
with
glycine
surfactant.
exhibited
monoclinic
phase
highly
oriented,
interconnected
sheet-like
morphology.
showed
better
optical
transfer
characteristics
than
its
constituents,
NiMoO4.
Consequently,
developed
superior
photocatalytic
redox
capability;
ZINM30
(the
composite
30
wt.%
loaded)
could
degrade
91.67%
tetracycline
86.23%
norfloxacin
within
120
min.
This
enhanced
activity
attributable
reduced
bandgap
(Egap
=
2.01
eV),
morphology,
high
specific
surface
area
(1099.89
m2/g),
intimate
contact
between
NiMoO4,
which
facilitated
establishment
heterojunction.
Active
species
trapping
tests
verified
that
•O2−
h+
were
primary
species,
supporting
proposed
degradation
mechanism.
work
highlights
valid
ZIF67/NiMoO4
system
carrier
and,
therefore,
antibiotics.
Chemical Physics Impact,
Journal Year:
2023,
Volume and Issue:
8, P. 100428 - 100428
Published: Dec. 12, 2023
This
study
investigates
the
feasibility
of
employing
a
fluidized
bed
reactor
for
degradation
4-chlorophenol
(4CP),
considering
multiple
operational
parameters
(type
radiation,
fresh
inlet
flow
rate
and
recycle
rate).
The
selection
ZnO/g-C3N4/carbon
xerogel
as
photocatalyst,
choice
motivated
by
improved
charge
transfer
increased
catalyst
activity
under
visible
radiation
provided
presence
carbon
g-C3N4,
was
previously
determined
through
tests
conducted
in
jacketed
batch
which
ternary
material
efficiency
compared
to
their
constituting
counterpart
materials.
semiconductors
unary,
binary,
materials
were
chosen
based
on
considerations
availability,
sustainability,
abundance
nature.
use
proposed
brings
advantages
scalability,
distribution
irradiated
light
overall
costs
when
commonly
used
reactors,
whereas
investigation
involved
such
process
is
great
importance
understand
optimize
pollutant
process.
Regarding
X-ray
diffractometry
(XRD)
revealed
zinc
oxide's
hexagonal
crystalline
structure.
Moreover,
additional
characterization
using
Raman
spectroscopy,
Fourier-transform
infrared
spectroscopy
(FT-IR),
scanning
electron
microscopy
(SEM),
transmission
(TEM),
energy-dispersive
(EDS)
confirmed
not
only
ZnO
but
also
g-C3N4
composite.
From
photodegradation
experiments,
it
that
optimal
achieve
best
degradation,
well
this
purpose,
0.07
25
L
h−1,
respectively.
Mathematical
simulations
described
model
fits
system's
behavior
considers
specific
reaction
dependent
concentration
medium.
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 29, 2024
Abstract
This
study
presents
findings
that
suggest
it
is
possible
to
fine-tune
and
enhance
the
optical
properties
of
anthraquinone
(AQ)
its
photocatalytic
performance
in
degradation
rhodamine
B
(RhB)
at
molecular
level
through
varying
keleton
substituents.
Specifically,
electron-withdrawing
substituent
demonstrates
a
more
pronounced
improvement
effect
compared
electron-donating
substituent.
Among
them,
2-carboxyanthraquinone
(AQ-COOH)
demonstrated
most
exceptional
activity,
affording
99.9%
rate
under
visible
light
irradiation
for
30
min.
It
noteworthy
hydrochloric
acid
solution
with
concentration
0.5
mmol·L
−
1
has
considerable
promoting
impact
on
photodegradation
RhB
catalyzed
by
AQ-COOH,
total
can
be
accomplished
15
In
addition,
AQ-COOH
also
good
applicability
tetracycline,
methylene
blue,
methyl
orange.
As
recyclable
solid
catalyst,
catalytic
activity
remained
mostly
unchanged
after
being
used
five
times.
Additionally,
did
not
undergo
when
exposed
light,
indicating
excellent
stability
process
catalyzing
degradation.
According
quenching
experiments
EPR
spectrum
characterizations,
photo-generated
active
species
oxygen
vacancies
(h
+
),
photogenerated
electrons
(e
superoxide
free
radicals
(O
2
•−
singlet
(
O
)
hydroxyl
radical
(•OH)
are
involved
hypothesized
photo-catalytic
mechanism.
