Journal of the American Ceramic Society,
Год журнала:
2024,
Номер
107(12), С. 8036 - 8046
Опубликована: Авг. 21, 2024
Abstract
Zirconia/alumina
composites
are
a
family
of
structural
ceramics
with
excellent
mechanical
properties.
In
order
to
improve
the
engineering
reliability
this
kind
composites,
uniform
spatial
distribution
two
phases
is
necessary.
One
effective
methods
achieve
goal
synthesize
zirconia–alumina
composite
nano
powders.
Here,
we
report
mechanochemical
synthesis
powders,
in
which
dehydration
and
crystallization
Zr–Y–Al
hydroxide
can
be
achieved
under
milling
conditions,
leading
formation
tetragonal
zirconia
phase
supersaturated
Al
3+
.
The
mechanochemically
synthesized
powders
have
element
fine
primary
crystallite
size
around
11
nm.
After
sintering
at
1400°C,
t
‐ZrO
2
/
α
‐Al
O
3
grain
could
obtained.
To
uncover
full
benefits
these
ceramic
processing,
future
work
done
break
up
deagglomerations
sinterability
zirconia/alumina
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(43), С. 15875 - 15880
Опубликована: Окт. 15, 2024
A
mechanochemical
copper-catalyzed
oxidative
amination
of
primary
sulfinamides
has
been
developed,
leading
to
NH-sulfonimidamides
in
moderate
good
yields
under
solvent-free
conditions.
Air
serves
as
a
terminal
oxidant
without
the
need
for
external
additives.
The
obtained
products
could
be
readily
converted
into
both
acyclic
and
cyclic
sulfonimidamide
derivatives.
This
approach
demonstrates
considerable
ecological
benefits
compared
solvent-based
methods.
Nanomaterials,
Год журнала:
2024,
Номер
14(11), С. 944 - 944
Опубликована: Май 27, 2024
Aluminosilicates,
abundant
and
crucial
in
both
natural
environments
industry,
often
involve
uncontrollable
chemical
components
when
derived
from
minerals,
making
further
purification
reaction
more
complicated.
This
study
utilizes
pure
alumina
fumed
silica
powders
as
controllable
sources,
enhancing
aluminosilicate
reactivity
through
room
temperature
(non-firing)
processing
providing
a
robust
framework
that
resists
mechanical
stress
high
temperature.
By
embedding
iron-based
metal–organic
frameworks
(Fe-MOF/non-firing
membranes)
within
the
above
matrix,
these
ceramic
membranes
not
only
preserve
their
robustness
but
also
gain
significant
functionality,
capacity
to
removing
phytochromes
vegetables.
Sodium
hydroxide
sodium
silicate
were
selected
activators
successfully
prepare
high-strength,
non-firing
membranes.
These
demonstrated
flexural
strength
of
8.7
MPa
under
wet-culture
conditions
with
molar
ratio
Al2O3:SiO2:NaOH:Na2SiO3
at
1:1:0.49:0.16.
The
chlorophyll
adsorption
spinach
conducted
on
showed
removal
rate
exceeding
90%
pH
=
9,
highlighting
its
potential
for
selective
chlorophyll.
underscores
MOF-enhanced
environmental
applications,
particularly
agricultural
pollution
control.
International Journal of Applied Ceramic Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 22, 2025
Abstract
Tungsten
oxide
possesses
unique
properties
owing
to
its
multiple
oxidation
states.
They
are
produced
by
several
techniques
with
each
having
their
advantages
and
limitations.
In
this
study,
the
hydrated
tungsten
nanopowders
varied
morphology
were
synthesized
electrochemical
of
WC‐6Co
scrap
at
room
temperature.
This
process
is
efficient
requires
low
capital
investment.
The
effect
processing
parameters,
namely
voltage,
molarity,
temperature,
electrolyte
stirring
on
yield,
structure,
morphology,
energy
bandgap
studied.
X‐ray
diffraction
(XRD)
analysis
showed
that
voltage
molarity
monoclinic
WO
3
.2H
2
O
nanoparticles
synthesized.
contrast,
high
orthorhombic
.H
Further,
size
crystal
decreases
increase
in
during
pellet.
in‐situ
XRD
progressive
transformation
as‐synthesized
nanopowder
from
cubic
structure.
Thermal
treatments
using
microwave
radiation
muffle
furnace
resulted
partial
phase
0.5
phase.
scanning
electron
microscopy
transmission
analyses
confirmed
formation
nanoplates,
nanorods,
quantum
dots
depending
parameters.
ultraviolet‐visible
spectroscopy
a
relatively
lower
nanopowder.
Nonlinear Engineering,
Год журнала:
2025,
Номер
14(1)
Опубликована: Янв. 1, 2025
Abstract
This
study
investigates
a
novel
multi-component
polymer
composite
method
for
preparing
graphite/polymer
composites
with
excellent
electrical
conductivity
and
electromagnetic
shielding
properties,
aiming
to
address
the
challenges
in
achieving
balance
between
conductivity,
mechanical
stability,
thermal
properties
applications
like
electronics,
automotive,
aerospace.
Expanded
graphite
(EG)
was
used
as
conductive
filler,
solid-state
shear
milling
employed
achieve
uniform
dispersion
of
matrix
consisting
polyvinyl
chloride
(PVC),
chlorinated
polyethylene
(CPE),
polyurethane
elastomer
(TPU),
improving
stability.
X-ray
diffraction,
Raman
spectroscopy,
scanning
electron
microscopy,
transmission
tests
revealed
significant
differences
across
substrates.
In
EG/PVC-CPE
system,
sheets
are
stripped
into
multiple
layers,
while
EG/PVC-TPU
they
form
thinner
or
even
single
leading
enhanced
efficiency.
The
results
show
that
offer
improved
demonstrating
potential
matrices
developing
high-performance
interference
applications.
Journal of Chemical Research,
Год журнала:
2025,
Номер
49(3)
Опубликована: Май 1, 2025
Mechanochemistry,
a
branch
of
chemistry
that
involves
the
application
mechanical
energy
to
induce
chemical
reactions,
has
garnered
significant
attention
for
its
unique
approach
synthesis
and
materials
processing.
This
review
explores
fundamental
principles
mechanochemistry,
including
impact
forces
on
crystalline
structures
resultant
transformations.
Recent
advancements
highlight
field’s
potential
in
reducing
reliance
hazardous
solvents,
improving
efficiency,
supporting
sustainable
practices.
Mechanochemistry’s
applications
extend
recycling
resource
recovery,
particularly
context
valuable
metals
materials,
aligning
with
green
circular
economy.
Despite
benefits,
field
faces
challenges
related
scalability,
process
control,
material
limitations.
Future
directions
include
integrating
advanced
technologies,
exploring
new
applications,
enhancing
understanding
address
these
challenges.
Mechanochemistry
stands
as
transformative
evolving
area
research
implications
scientific
progress
industrial
promising
drive
innovation
sustainability
various
sectors.
