Adding
burning-rate
catalysts
(BRCs)
is
highly
effective
for
enhancing
ammonium
perchlorate
(AP)
thermal
decomposition.
To
mitigate
BRCs’
agglomeration
and
enhance
their
catalytic
activity
AP
pyrolysis,
five
metal
carbonyl
compounds
(Mo(CO)6,
Cr(CO)6,
W(CO)6,
Fe2(CO)9,
Mn2(CO)10)
were
refined
into
oxidized
carbon
nanotube
(CNTs)
cavities,
respectively,
by
ultrasonication.
The
structures
of
the
as-prepared
nanocomposites
examined
with
TEM,
SEM,
XPS,
Raman,
etc.,
confirming
successful
filling
compounds.
Electrochemical
studies
revealed
that
Mo(CO)6@CNTs(N1)
exhibited
an
enhanced
electron
transfer
rate
superior
electrocatalytic
performance
compared
to
CNTs(N1).
Their
evaluated
DSC
showed
5
wt.%
exhibits
best
effect,
increasing
heat
release
1850.62
J·g-1,
advancing
its
peak
temperature
80.6
oC,
decreasing
activation
energy
100.45
KJ·mol-1.
degradation
mechanism
catalyzed
was
probed
through
TG-FTIR-MS,
in-situ
solid
FTIR,
theoretical
calculations.
investigations
suggested
promoter
in
generates
nanotubes-confined
MoO3
nanoparticles
featuring
numerous
Lewis
Brønsted
acidic
sites,
which
not
only
improves
NH3
adsorption
but
also
enhances
accelerates
O2
conversion
O2-,
thereby
facilitating
pyrolysis.
Finally,
a
plausible
decomposition
postulated.
Chemistry of Materials,
Год журнала:
2024,
Номер
36(8), С. 3496 - 3535
Опубликована: Апрель 9, 2024
Dihydroxylammonium
5,5′-bistetrazole-1,1′-diolate
(TKX-50)
is
a
new
type
of
nitrogen-rich
ionic
salt
in
the
field
energetic
materials
(EMs),
which
has
beneficial
application
prospects
military,
aerospace,
and
civilian
blasting
fields.
TKX-50
characteristics
easy
synthesis,
high
energy,
low
sensitivity
toxicity,
good
comprehensive
performance
expected
to
replace
traditional
EMs.
However,
recent
years,
although
physicochemical
properties
have
been
increasing,
there
are
no
relevant
in-depth
reports
discuss
existing
problems
countermeasures
TKX-50.
Based
on
current
research
progress
TKX-50,
this
review
gives
detailed
overview
chemical
physical
properties,
explosive
performance,
safety
thermal
decomposition
behavior,
catalytic
modification,
composite
applications
Moreover,
we
summarize
advantages
provide
prospective
development
direction
focus
future.
This
study
originally
reports
the
in-situ
construction
of
porous
WO3/FeWO4
ribbon-like
hierarchical
composites
with
unique
and
intense
p-n
heterojunction
interface
behavior
enhanced
adsorption
carrier
transport
capability
for
effectively
detecting
n-butanol
at
room
temperature.
The
introduction
different
adding
amounts
MIL-101
plays
key
role
morphological
evolution
WO3-based
microstructures
well-distributed
nanoparticles
in
situ
growth
on
surface
by
a
facile
electrospinning
subsequent
calcination
process.
Compared
pristine
WO3,
sharp
useful
reduction
optimal
operating
temperature
from
220
to
25
°C
can
be
observed
as
Fe
component
increasing,
mainly
owing
inverted
p-type
gas
sensitive
response
caused
controllable
variable
FeWO4
phase
multiple
effective
WO3-FeWO4
heterojunctions.
Sample
4
display
highest
12.3
relatively
short
response/recovery
times
110/140
s
100
ppm
°C,
together
superior
selectivity,
repeatability,
humidity
long-term
stability.
Density
functional
theory
(DFT)
simulation
is
employed
verifying
significant
interaction
charge
transfer
between
molecule
WO3/FeWO4.
Regular
distribution
interfaces
not
only
determine
collaborative
modulation
electronic
structures,
but
also
provide
efficient
surface/interface
mechanism
induced
one-dimensional
(1D)
ribbons.
Actually,
integrated
gas-sensitive
components
based
exhibit
rapid
characteristic
under
condition
friendly
strategy
optimizing
practical
detection
ppm-level
other
inorganic
heterogeneous
sensors.
