Nanostructured
ZnFe2O4
powder
with
crystallite
size
from
4
to
55
nm
was
synthesized
via
coprecipitation
method
followed
by
calcination
process
carried
out
at
different
temperatures.
The
obtained
samples
were
characterized
XRD,
SEM,
XPS
and
ICP-AES
methods;
magnetic
properties
298
77
K
analyzed,
as
well
the
electrochemical
behavior
tested.
Fe
–
Zn
ratio
oxygen
vacancies
amount
established.
It
found
that
magnetization
values
depend
on
size,
determine
performance
in
case
of
field
cooling
curves.
sample
calcined
500
°С
showed
highest
Coulombic
efficiency
76.2%
(at
first
cycle)
initial
discharge
charge
specific
capacity
1400
1067
mAh∙g−1
current
densities
0.2
A∙g−1.
Also,
it
demonstrated
depends
amount,
value
for
46.9
a
smallest
amount.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(6), P. 6093 - 6108
Published: March 4, 2024
Synthetic
dyes
are
widely
used
in
various
industries,
which
inevitably
leads
to
increased
water
pollution.
One
of
the
recognized
and
waste-free
techniques
for
treatment
is
photocatalytic
purification
using
semiconductor
nanoparticles.
However,
debate
on
how
properties
can
be
tuned
through
structural
morphological
parameters
nanoparticle
synthesis
procedures
remains
open.
In
present
work,
an
approach
regulate
UV-light-driven
activity
spherical
SnO2
nanoparticles
different
demonstrated
first
time.
Complex
characterization
was
provided
physicochemical
methods
with
help
computational
methods.
Special
attention
paid
development
a
protocol
oxygen
vacancy
accounting
within
computer
calculations
more
realistic
modeling
interaction
energy
between
surfaces
organic
dye
molecules
natures.
The
photocatalysis
mechanism
investigated
according
developed
protocol,
including
study
mixture
kinetic
degradation,
dye-photocatalyst
complex
formation,
ratio
vacancies
defects.
It
shown
that
93%
single
decomposed
7
min,
degradation
real
sample
from
Neva
River
achieved
60%
after
40
min.
possible
establish
this
proof-of-concept
based
combination
experimental
approaches
develop
strategy
rational
design
photocatalysts
promising
samples.
