Materials,
Journal Year:
2024,
Volume and Issue:
17(18), P. 4671 - 4671
Published: Sept. 23, 2024
The
effects
of
various
additives
(Y2O3,
Ga2O3,
and
WO3)
on
photocatalytic
degradation
efficiency
under
UV
light-emitting
diodes
(LEDs)
the
optical
properties
TiO2
Degussa
P25
were
investigated
using
ketoprofen
diclofenac,
two
non-steroidal
anti-inflammatory
drugs
commonly
detected
in
German
rivers.
Experimental
results
demonstrated
that
thin
films
containing
these
exhibited
similar
efficiencies
as
pure
TiO2,
achieving
a
30%
over
150
min.
In
contrast,
Y2O3/TiO2
film
showed
significantly
improved
performance,
46%
180
Notably,
system
was
three
times
more
effective
degrading
diclofenac
compared
to
TiO2.
Additionally,
photocatalyst
retained
its
activity
successive
cycles
with
only
slight
decrease
efficiency.
both
organic
pollutants
followed
first-order
kinetics
all
photocatalysts.
investigation
included
SEM
imaging
assess
surface
homogeneity
UV-vis
solid-state
spectroscopy
evaluate
impact
energy
band
gap
Nanoscale,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
This
review
highlights
recent
advancements
in
TiO
2
photocatalysts,
emphasizing
key
strategies
to
enhance
their
performance
for
environmental
remediation
and
energy
conversion
technologies.
Catalysts,
Journal Year:
2024,
Volume and Issue:
14(9), P. 575 - 575
Published: Aug. 29, 2024
This
review
critically
examines
the
latest
advancements
in
clay
mineral-based
photocatalysts
for
water
purification.
Clay
minerals,
owing
to
their
natural
abundance,
low
cost,
and
unique
physicochemical
properties,
have
emerged
as
promising
candidates
enhancing
photocatalytic
efficiency.
article
delves
into
various
activation
methods
including
acid,
alkali,
calcination,
mechanochemical
activation,
highlighting
roles
surface
area,
creating
active
sites,
improving
performance.
Moreover,
explores
modification
strategies
photocatalysts,
such
doping
with
metal
non-metal
ions,
deposition
of
metals,
design
heterojunctions,
further
boost
activity.
In
particular,
utilization
kaolinite,
montmorillonite,
attapulgite,
sepiolite
mineral
supports
is
discussed
detail,
showcasing
potential
wastewater
treatment.
The
underscores
significant
strides
made
development
effectiveness
degrading
organic
contaminants
under
light
exposure.
Nevertheless,
there
are
persisting
challenges
optimization
loading
quantities,
improvement
compatibility
between
minerals
reduction
preparation
costs
large-scale
applications.
summary,
this
offers
valuable
insights
current
status
purification,
thereby
stimulating
future
research
field.
Journal of Saudi Chemical Society,
Journal Year:
2024,
Volume and Issue:
28(3), P. 101858 - 101858
Published: April 16, 2024
This
study
reports
the
production
of
a
heterojunction
copper
oxide-zinc
oxide
nano-photocatalyst
based
on
lemon
leaf
extract,
which
acted
as
both
stabilizer
and
capping
reducing
agent.
The
fabricated
photocatalyst
had
smooth
surface
with
numerous
functional
groups,
its
energy
band
gap
was
measured
to
be
3.14
eV,
is
suitable
for
photocatalytic
applications.
Toxic
Congo
Red
dye
used
model
pollutant
investigate
degradation
performance
proposed
CuO-ZnO
nano-photocatalyst.
exhibited
rapid
rate
under
sunlight
irradiation,
concentration
by
almost
70
%
within
50
min
pseudo-first-order
kinetics.
also
evaluated
quantum
yield
figure
merit,
were
found
6.63
x
10−9
molecules
photon−1and
3.31
10−4,
respectively.
In
addition,
catalyst
displayed
good
stability
up
5
cycles.
Based
these
results,
outperformed
previously
reported
photocatalysts.
mechanisms
associated
explained
an
interfacial
charge
transfer
reaction.
