iScience,
Journal Year:
2020,
Volume and Issue:
23(6), P. 101208 - 101208
Published: May 28, 2020
Advanced
functional
electro-thermal
conversion
phase
change
materials
(PCMs)
can
efficiently
manage
the
energy
from
electrical
to
thermal
energy,
thereby
playing
a
significant
role
in
sustainable
utilization.
Considering
inherent
insulating
properties
of
pristine
PCMs,
electrically
conductive
supporting
are
widely
used
encapsulate
PCMs
prepare
composite
for
and
storage.
Herein,
we
comprehensively
review
recent
advances
different
mainly
including
carbon-based
(carbon
nanotubes
[CNTs],
graphene,
biomass-derived
carbon,
graphite,
highly
graphitized
metal
organic
frameworks
[MOFs]-derived
carbon)
MXene-based
PCMs.
This
aims
provide
an
in-depth
understanding
electrothermal
mechanism
relationships
between
structure
design
(random
array-oriented
or
single
hybrid
materials)
properties,
contributing
profound
theoretical
experimental
bases
construction
high-performance
Finally,
highlight
current
challenges
future
prospects.
International Journal of Mining Science and Technology,
Journal Year:
2021,
Volume and Issue:
31(6), P. 1145 - 1152
Published: Sept. 15, 2021
How
to
sustainably
produce
bauxite
by
effective
reverse
froth
flotation
of
kaolinite
at
low
temperature
is
an
urgent
problem
be
solved
in
the
field
mineral
processing.
In
this
work,
a
novel
amino-based
Gemini
surfactant
butadiyl-1,
4-bis
(dimethyl
dodecylammonium
bromide)
(BBDB)
was
prepared
and
first
utilized
as
collector
for
flotation.
Its
performance
compared
with
that
common
monomolecular
1-dodecylamine
(DDA)
micro-flotation
tests.
The
tests
results
indicated
95%
recovery
obtained
using
2.0
×
10−4
mol/L
BBDB
25
℃,
which
half
dosage
when
DDA
maximum
81%.
At
extremely
(0
℃),
3.0
could
still
collect
91%
kaolinite,
while
showed
frustrating
ability.
contact
angle
significantly
improve
hydrophobicity
surface
(contact
71.7°)
than
only
25.8°)
0
℃.
Krafft
point
comparison
had
much
lower
(below
℃)
DDA.
Fourier
transform
infrared
spectroscopy
(FTIR)-spectrum
analysis
zeta
potential
measurements
physically
adsorbed
on
through
electrostatic
interaction.
