ChemBioEng Reviews,
Journal Year:
2024,
Volume and Issue:
11(3), P. 595 - 612
Published: April 18, 2024
Abstract
Zinc
oxide
(ZnO)
is
a
promising
material
with
diverse
range
of
applications,
spanning
gas
sensing,
photonics,
photovoltaics,
energy
conversion,
water
splitting,
photocatalysis,
and
transparent
trapping.
However,
ZnO
limited
responsiveness
to
visible
light
affected
low
photogenerated
electron‐hole
pairs
(charge),
quantum
efficiency,
high
recombination
charge.
In
this
review,
we
are
addressing
innovative
strategies,
including
incorporation
rare
earth
elements
as
trap
electron
reduce
charge
via
doping
from
analysis
118
referenced
sources.
We
found
that
hydrothermal
shows
very
good
methods
for
boosting
efficiency
up
100
%
within
60‐min.
rare‐earth
metals
La
Ce
show
highest
120
min
irradiations,
means
efficient
reducing
The
potential
doped
will
enhance
pairs,
catalyzing
the
generation
radical
atoms
oxidation
reduction
reactions.
This
review
encapsulates
most
current
findings,
it
serves
valuable
resource
scholars
seeking
advance
their
understanding
photocatalysts
developing
photocatalytic
technologies.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(14), P. 3373 - 3373
Published: July 18, 2024
Due
to
a
wide
band
gap
and
large
exciton
binding
energy,
zinc
oxide
(ZnO)
is
currently
receiving
much
attention
in
various
areas,
can
be
prepared
forms
including
nanorods,
nanowires,
nanoflowers,
so
on.
The
reliability
of
ZnO
produced
by
single
dopant
unstable,
which
turn
promotes
the
development
co-doping
techniques.
Co-doping
very
promising
technique
effectively
modulate
optical,
electrical,
magnetic,
photocatalytic
properties
ZnO,
as
well
ability
form
structures.
In
this
paper,
important
advances
co-doped
nanomaterials
are
summarized,
preparation
using
different
methods,
hydrothermal,
solvothermal,
sol-gel,
acoustic
chemistry.
addition,
range
applications
photocatalysis,
solar
cells,
gas
sensors,
biomedicine
discussed.
Finally,
challenges
future
prospects
field
also
elucidated.
Results in Engineering,
Journal Year:
2023,
Volume and Issue:
19, P. 101253 - 101253
Published: June 28, 2023
This
study
focus
on
modification
of
TiO2
with
a
mixture
SnO2
and
CeO2
that
can
actively
degrade
methylene
blue
as
industrial
dye
under
visible
light.
The
synthesis
mixed
oxides
SnO2/CeO2/TiO2
was
carried
out
by
the
precipitation
method
which
included
dissolving
reactants
using
HNO3
re-precipitation
NaOH
solution.
precipitate
then
dried
calcined
at
650
°C.
products
were
characterized
XRD,
DRUV,
FTIR,
SEM-EDX,
TEM,
photoluminescence
spectroscopy.
addition
both
decrease
bandgap
inhibit
recombination
process.
results
showed
photodegradation
MB
light
higher
than
TiO2,
SnO2,
CeO2.
preparation
Sn/Ce
ratio
1:1
highest
up
to
87%.
optimum
conditions
for
40
ppm
obtained
pH
7,
0.2
g
catalyst
mass,
120
min
reaction
time.
photocatalytic
mechanism
three
runs
without
appreciable
loss
activity
shows
great
potential
be
an
excellent
candidate
environmental
remediation.
Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
319, P. 100566 - 100566
Published: June 26, 2024
This
study
investigates
the
use
of
ZnO
NPs
(Zinc
oxide
nanoparticles)
derived
from
spinach
leaf
extracts
in
a
sustainable
photocatalytic
technology
to
enhance
decomposition
hazardous
effluents
refineries
and
paper
mills.
The
biosynthesized
were
characterized
through
X-ray
diffraction
(XRD),
UV-Vis
spectroscopy,
scanning
electron
microscopy
(SEM),
transmission
(TEM).
XRD
analysis
reveals
that
possess
hexagonal
wurtzite
structure,
exhibiting
preferred
arrangement
(101)
planes.
synthesized
have
spherical
shape,
as
seen
SEM
images.
TEM
detected
size
be
between
35
40
nm.
results
indicate
produced
via
biosynthesis
activity
efficiently
decomposing
organic
chemicals
found
gasoline
refining
effluent
when
exposed
light.
At
pH
8,
exhibited
highest
rate
degradation
for
toluene
(84.26
%)
xylene
(90.36
after
being
simulated
sunlight
240
min.
In
context
treatment
mill
effluents,
it
has
been
shown
subsequent
cycles
resulted
reduction
chemical
oxygen
demand
(COD)
levels
81.24
%,
74.14
68.92
60.24
53.82
respectively.
