Langmuir,
Год журнала:
2023,
Номер
39(26), С. 9239 - 9245
Опубликована: Июнь 25, 2023
In
order
to
preserve
the
coordinating
ability
of
hydrazide
group,
we
used
retrosynthetic
analysis
design
and
synthesize
ligand
furan-2,5-dicarbohydrazide
its
complex
[Cu(FDCA)(H2O)ClO4]n(ClO4)n·nH2O
(ECPs-1·H2O).
The
structure
product
was
confirmed
by
single-crystal
X-ray
diffraction,
infrared
spectroscopy,
elemental
analysis.
solvent-free
target
material
ECPs-1
exhibited
good
thermal
stability,
sensitivity
mechanical
stimuli,
excellent
explosive
properties.
Furthermore,
it
had
potential
for
laser
ignition
comparable
detonation
power
LA.
simple
preparation
method
inexpensive
starting
materials
enriched
research
on
primary
explosives.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(28)
Опубликована: Март 10, 2024
Abstract
Transition
bimetallic
sulfides
show
significant
promise
for
energy‐related
applications
because
of
their
plentiful
active
sites
and
synergistic
redox
activity.
However,
limited
pore
size
low‐conductivity
issues
hinder
application.
The
structure
NiCo–S
with
rich
sulfur
vacancies
is
first
predicted
by
density
functional
theory
(DFT)
calculations.
Different
vacancy
concentrations
are
modeled
DFT
calculations,
the
results
confirm
that
enhance
conductivity
electrode
material
more
beneficial
adsorption
OH
*
species.
It
verified
differential
charge
electric
field
formed
on
surface
can
lead
to
strong
interfacial
interactions
electron
aggregation,
which
promotes
electron/ion
transfer
kinetics.
Furthermore,
nanosheets
prepared
carbon
cloth
enriched
different
(denoted
as
NiCo‐Sv‐x,
x
representing
concentration
vacancies)
sulfide
etching
NiCo‐MOF
annealing
under
H
2
/Ar
atmosphere.
NiCo‐Sv‐x
electrodes
obtained
applied
cathode
supercapacitors
anode
oxygen
evolution
reaction.
Through
combining
experimental
theoretical
analysis,
effect
defect
engineering
electrochemical
performance
materials
further
confirmed.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 9, 2024
Laser
ignition
of
primary
explosives
presents
more
reliable
alternative
to
traditional
electrical
initiation
methods.
However,
the
commercial
initiator
lead
azide
(LA)
requires
a
high-power
density
laser
detonate,
with
minimum
energy
(E
Abstract
Developing
an
effective
tailoring
approach
to
overcome
the
intrinsic
trade‐off
between
detonation
power
and
safety
in
energetic
materials
is
crucial
for
micro‐electromechanical
systems
but
remains
challenging.
Herein,
anchoring
of
high‐energy‐density
yet
highly
sensitive
primary
explosive
copper
azide
(CA)
onto
N‐doped
reduced
graphene
oxide
(NrGO)
shell
(denoted
as
CA@NrGO)
reported
via
electronic
interactions.
This
simultaneously
achieves
a
three‐fold
enhancement
mechanical
safety,
≈36‐fold
improvement
electrostatic
compared
pure
CA,
high
capacity.
Theoretical
calculations
reveal
that
interaction
NrGO
CA
not
only
facilitate
energy
dissipation
from
forces
acting
on
CA—via
intralayer
compression
slip,
thereby
enhancing
safety—but
also
promote
interfacial
electron
transfer
NrGO,
preventing
charge
accumulation
improving
safety.
Furthermore,
excellent
CA@NrGO
demonstrated
micro‐detonation
device,
where
6
mg
reliably
initiated
20
secondary
CL‐20.
work
highlights
how
manipulating
interactions
their
supports
contributes
design
safe
miniaturized
devices.
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(3), С. 1642 - 1651
Опубликована: Янв. 10, 2024
Advanced
energetic
materials
(EMs)
play
a
crucial
role
in
the
advancement
of
microenergetic
systems
as
actuation
parts,
igniters,
propulsion
units,
and
power.
The
sustainable
electrosynthesis
EMs
has
gained
momentum
achieved
substantial
improvements
past
decade.
This
study
presents
facile
synthesis
new
type
high-performance
CuN3@CuCl
hybrids
via
co-electrodeposition
methodology
utilizing
porous
Cu
sacrificial
template.
composition,
morphology,
characteristics
can
be
easily
tuned
by
adjusting
deposition
times.
resulting
demonstrate
remarkable
energy
output
(1120
J·g–1)
good
laser-induced
initiating
ability.
As
compared
with
CuN3,
uniform
doping
inert
CuCl
enhances
electrostatic
safety
hybridized
material
without
compromising
its
overall
characteristics.
Notably,
special
oxidizing
behavior
gradually
lowers
susceptibility
hybrid
to
laser
stimulation.
significant
implications
for
passivation
or
self-destruction
highly
sensitive
EMs.
Overall,
this
pioneers
path
development
MEMS-compatible
EMs,
facilitating
further
applications.
Microscopy Research and Technique,
Год журнала:
2024,
Номер
87(8), С. 1965 - 1973
Опубликована: Апрель 9, 2024
This
study
displays
the
effect
of
reduced
graphene
oxide
(rGO)
nanofiller
and
polystyrene-b-poly(ethylene-ran-butylene)-b-polystyrene-grafted
maleic
anhydride
(SEBS-g-MA)
on
optical,
thermal,
mechanical
features
expanded
polystyrene
(EPS).
First,
thin
films
pristine
EPS
composites
were
prepared
using
solution
cast
method.
The
subjected
to
fourier-transform
infrared
(FTIR),
SEM,
UV-visible
spectrophotometer,
thermogravimetric
analysis/differential
scanning
calorimetry,
universal
testing
machine
for
structural,
morphological,
characterizations.
Optical
revealed
a
significant
increase
in
refractive
index
absorption
than
EPS.
Indirect
band-gap
energy
(~4.08
eV)
was
~1.61
eV
rGO
composite
~
2.23
composed
SEBS-g-MA.
Thermal
analyses
presented
improvement
characterization
temperatures
such
as
T
Inorganic Chemistry Frontiers,
Год журнала:
2024,
Номер
11(23), С. 8235 - 8245
Опубликована: Янв. 1, 2024
A
novel
2D
energetic
MOF
[Cu(ATRZ)(N
3
)
2
]
n
was
prepared
by
single-crystal-to-single-crystal
transformation
to
encapsulating
N
−
,
which
is
a
new
copper
azide
variant
with
excellent
safety
and
laser
initiation
performance.
Photosensitive
materials,
such
as
energetic
complexes,
usually
have
high
sensitivity
and
cause
heavy-metal
pollution,
whereas
others,
like
carbon
black
dye,
do
not
contain
energy,
which
affects
energy
output
mechanical
properties.
In
this
work,
donor-acceptor
π-conjugated
catalysts,
denoted
D-n,
are
designed
synthesized.
Nonmetallic
hybrid
composites
prepared
by
assembling
the
as-synthesized
catalysts
into
multiscale
ammonium
perchlorate
(AP).
Composites
containing
APs
can
be
successfully
ignited
without
involvement
of
metals.
The
new
ignition
mechanism
is
further
analyzed
using
experimental
theoretical
analyses
UV-vis-near-infrared
(NIR)
spectra,
electron-spin
resonance
spectroscopy,
energy-gap
analysis.
shortest
delay
time
56
ms
under
condition
a
NIR
wavelength
1064
nm
laser
power
10
W.
At
voltage
1
kV
electric
field
500
V
mm-1
,
laser-ignition
D-2/AP
composite
decreases
from
to
35
because
D-2
also
exhibits
organic
semiconductor-like
D-12/AP
used
ignite
other
common
materials.
This
study
guide
development
advanced
metal-free
laser-ignitable
address
challenges
in
aerospace
engineering.
Copper-based
azide
(CA)
in-situ
synthesized
through
gas-solid
azidation
and
utilized
as
preferred
material
for
miniaturized
explosive
systems
has
attracted
extensive
attention
from
researchers.
This
work
aims
to
reveal
the
morphological
evolution
mechanism
of
Ca
during
processes.
The
processes
CA
under
different
reaction
conditions
were
observed
corresponding
stages
divided
by
characteristics
product
morphology.
morphology
islands
possesses
a
significant
impact
on
final
To
further
mechanism,
continuous
layer
core-shell
thermodynamic
equilibrium
models
derived
studied
explain
experimental
findings.
energy
properties
Cu(111),
CuN3(220),
Cu(N3)2(110)
surfaces
interfaces
first
principle
calculation
perform
analysis.
Based
results,
thermodynamics
analysis
Cu-CuN3,
Cu-Cu(N3)2
CuN3-Cu(N3)2
performed
dependence
was
discussed.
modes
into
thermodynamic-dominated
kinetic-dominated
based
orders
generation
results
proposed
modes,
which
provides
fundamental
perspective
regulate
enhance
performance.
