Molecules,
Journal Year:
2025,
Volume and Issue:
30(3), P. 460 - 460
Published: Jan. 21, 2025
This
study
focused
on
the
preparation
and
investigation
of
g-C3N4/TiO2
photocatalysts
using
different
TiO2
morphologies
(anatase
nanoparticles
(TPs),
poorly
crystalline
nanotubes
(aTTs),
well-crystalline
anatase
nanorods
(TRs))
self-synthesized
g-C3N4
(CN).
The
synthesis
composites
was
carried
out
a
mortar
mixing
technique
to
weight
ratio
1:1.
In
addition,
were
annealed
in
muffle
furnace
at
350
°C
for
2
h
air.
successful
formation
composite
with
mesoporous
structure
confirmed
results
XRD,
N2
physisorption,
FTIR
analyses,
while
microscopic
analysis
techniques
preservation
morphology
all
investigated.
UV-Vis
DR
measurements
showed
that
investigated
exhibited
visible-light
absorption
due
presence
CN.
solid-state
photoluminescence
electrochemical
impedance
spectroscopy
lower
charge
recombination
compared
pure
For
example,
transfer
resistance
(RCT)
CNTR/2
TR
CN
calcined
air
significantly
reduced
0.4
MΩ,
0.9
MΩ
1.0
highest
photocatalytic
performance
materials
tested,
achieving
30.3%
degradation
25.4%
mineralization
bisphenol
A
(BPA)
dissolved
water
under
illumination.
comparison,
components
achieved
BPA
rates
(between
2.4
11.4%)
levels
0.6
7.8%).
(i)
Ti3+
O-vacancies
TR,
(ii)
enhanced
heterojunction
formation,
(iii)
dynamics
enabled
by
dual
mixed
type-II/Z
scheme
mechanism.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(6), P. 1244 - 1244
Published: March 10, 2025
Graphene
quantum
dots
(GQDs)
represent
a
class
of
promising
nanomaterials
characterized
by
adjustable
optical
properties,
making
them
well
suited
for
applications
in
biosensing
and
chemical
detection.
However,
challenges
persist
achieving
scalable,
cost-effective
synthesis
enhancing
detection
sensitivity.
In
this
study,
we
have
developed
simple
environmentally
friendly
method
to
prepare
blue
graphene
dots,
c-GQDs,
using
nitronaphthalene
as
precursor,
yellow
y-GQDs,
doped
acid.
The
yield
is
29.75%,
the
average
thickness
2.08
nm
3.95
nm,
respectively.
synthesized
c-GQDs
exhibit
prominent
cyan
fluorescence
at
wavelength
490
under
excitation
380
while
y-GQDs
show
distinct
540
494
nm.
introduction
p-aminobenzoic
acid
(PABA)
introduced
marked
red
shift
fluorescence,
attributed
electron-withdrawing
effect
carboxyl
groups
on
PABA.
This
key
finding
significantly
enhanced
sensitivity
GQDs
detecting
trace
copper(II)
ions
(Cu2+),
heavy
metal
contaminant
posing
serious
environmental
risks.
was
selectively
quenched
presence
Cu2+,
facilitating
accurate
sensitive
even
complex
ion
matrices.
Mechanistic
studies
revealed
that
quenching
driven
strong
static
interactions,
which
inhibit
non-radiative
transitions.
work
not
only
introduces
scalable
producing
high-performance
but
also
highlights
their
potential
effective
fluorescent
probes
monitoring
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
The
creation
of
multi-component
energetic
complex
molecules,
with
functionalized
groups,
combined
synergistic
catalysis
among
catalytic
interactions
between
their
components,
offers
a
remarkable
opportunity
to
boost
the
energy
release
ammonium
perchlorate
(AP).
This
study
uses
one-pot
method
investigate
synthesis
approach
for
coordinating
anion
complexes.Furthermore,
potential
applications
this
series
complexes
as
combustion
catalysts
are
analyzed.
results
show
that
mixing
an
AP,
in
distinct
thermal
decomposition
pattern.
Specifically,
AG[Zn(DNPO)2]2H2O
(AEP-2)
and
DAG[Zn(DNPO)2]2H2O
(AEP-3)
catalyze
AP
single
exothermic
reaction.
high-temperature
increased
309.8
323.9
°C,
respectively.
Real-time
infrared
detection
revealed
H₂O,
N₂O,
NO₂,
HCl,
confirming
accelerated
period
catalyzed
decomposition.
Furthermore,
CO₂
indicates
catalyst
is
also
decomposed
during
phase.
Kinetic
analysis
process
shows
via
nucleation
pathway.
mechanism
elucidated
based
on
these
findings.
Colloids and Interfaces,
Journal Year:
2025,
Volume and Issue:
9(3), P. 28 - 28
Published: May 10, 2025
The
solution
combustion
method
is
widely
used
because
of
its
simple
operation
and
ability
to
produce
porous
structures.
chemical
composition
morphological
structure
the
material
can
be
regulated
by
different
oxidiser-to-fuel
ratios
(φ).
In
this
work,
AlCo2O4
derived
“Al”
catalytic
materials
were
successfully
synthesised
adjusting
fuel-to-oxidiser
ratio
using
a
one-step
method.
On
one
hand,
aluminium
nanoparticles
act
as
part
metal
fuel
in
composite
solid
propellant
and,
at
same
time,
serve
material.
contrast,
thermal
decomposition
performance
AP
was
significantly
improved
synergistic
catalysis
AlCo2O4.
Among
samples
prepared
under
ratios,
considering
all
aspects
(high-temperature
temperature,
activation
energy,
heat)
comprehensively,
with
φ
=
0.5
had
more
excellent
effect
on
decomposition,
THTD
reduced
285.4
°C,
which
188.08
°C
lower.
energy
also
(from
296.14
kJ/mol
211.67
kJ/mol).
addition,
ignition
delay
time
AlCo2O4-AP/HTPB
drastically
shortened
9
ms
from
28
after
addition
7%
materials.
Composite
propellants
have
shown
great
potential
for
application.
