Journal of Materials Research and Technology,
Год журнала:
2023,
Номер
23, С. 1052 - 1061
Опубликована: Янв. 7, 2023
This
research
aims
to
investigate
the
effect
of
different
amounts
doping
elements
(magnesium
and
yttrium
ions)
on
hardness,
elastic
modulus,
flexural
strength,
transparency
alumina
ceramics.
For
this
purpose,
Mg2+
Y3+
doped
α-Al2O3
nanoparticles
were
synthesized
via
co-precipitation
method.
The
results
revealed
that
majority
have
a
particle
size
300–400
nm.
Furthermore,
density
(60%
in-line
transmittance
at
wavelength
5
μm,
with
sample
thickness
2.4
mm)
bulk
materials
prepared
100
ppm
Mg2+and
400
(100M400Y)
presented
best
performance
compared
other
samples.
hardness
Young
modulus
28
GPa
349
GPa,
respectively.
strength
100M400Y
reached
highest
value,
193
MPa,
due
smaller
grain
minimal
porosity.
Organic Letters,
Год журнала:
2024,
Номер
26(19), С. 4071 - 4076
Опубликована: Май 2, 2024
An
electrochemical
oxidative
difunctionalization
of
diazo
compounds
with
diselenides
and
nucleophiles
has
been
developed.
This
innovative
approach
yields
a
diverse
array
selenium-containing
pyrazole
esters
alkoxy
esters,
overcoming
the
limitations
traditional
synthesis
methods.
Remarkably,
various
nucleophiles,
including
acids,
alcohols,
pyrazoles,
can
be
seamlessly
incorporated.
Notably,
this
protocol
boasts
high
atom
efficiency,
excellent
functional
group
tolerance,
good
efficiency
operates
under
transition
metal-
oxidant-free
conditions,
distinguishing
it
in
field.
International Journal of Electrochemical Science,
Год журнала:
2023,
Номер
18(9), С. 100247 - 100247
Опубликована: Июнь 21, 2023
The
goal
of
this
study
was
to
create
a
potent
photocatalyst
for
the
removal
hexavalent
chromium
(Cr(VI))
from
water
and
wastewater.
This
done
by
synthesizing
Cu
nanoparticle-WO3-CNT
nanocomposite
(Cu-WO3-CNTs).
Cu-WO3-CNTs
were
made
using
precipitation
calcination
processes.
WO3
nanoparticles
successfully
anchored
surface
CNTs,
according
morphological
structural
studies
photocatalysts
conducted
FE-SEM,
XRD,
EDS
analysis.
optical
band
gap
energies
WO3,
WO3-CNTs,
found
be
2.91,
2.79,
2.62
eV,
respectively.
Based
on
research
UV-vis
absorption
spectroscopy.
According
EIS
investigations,
Cu-WO3
had
synergistic
impact
accelerating
electron
transport
path
helpfully
inhibiting
recombination
electron-hole
pairs
in
sample.
entire
Cr(VI)
achieved
Cu-WO3-CNT
nanocomposites,
respectively,
after
110,
60,
48
minutes
sunshine
exposure,
results
investigation
photocatalytic
activity
50
mg/L
solution.
ability
structures
reducing
industrial
wastewater
investigated
solution
that
wastewater,
showed
could
reduced
effectively
photocatalysis
presence
photocatalyst.
Journal of Materials Research and Technology,
Год журнала:
2023,
Номер
23, С. 1052 - 1061
Опубликована: Янв. 7, 2023
This
research
aims
to
investigate
the
effect
of
different
amounts
doping
elements
(magnesium
and
yttrium
ions)
on
hardness,
elastic
modulus,
flexural
strength,
transparency
alumina
ceramics.
For
this
purpose,
Mg2+
Y3+
doped
α-Al2O3
nanoparticles
were
synthesized
via
co-precipitation
method.
The
results
revealed
that
majority
have
a
particle
size
300–400
nm.
Furthermore,
density
(60%
in-line
transmittance
at
wavelength
5
μm,
with
sample
thickness
2.4
mm)
bulk
materials
prepared
100
ppm
Mg2+and
400
(100M400Y)
presented
best
performance
compared
other
samples.
hardness
Young
modulus
28
GPa
349
GPa,
respectively.
strength
100M400Y
reached
highest
value,
193
MPa,
due
smaller
grain
minimal
porosity.
