ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
Bimetallic
nanoparticles
(BNPs)
have
attracted
much
attention
recently
due
to
their
improved
properties
compared
monometallic
ones.
Gold
and
silver
(AuAgNPs)
are
among
the
most
studied
BNPs.
Using
these
particles
as
powder
or
dispersion
has
drawbacks
such
ease
of
aggregation
difficulty
separating
recovering
from
reaction
medium.
Therefore,
immobilizing
in
polymeric
matrices,
cellulose,
is
appealing.
In
this
context,
present
work
focused
on
preparing
unmodified
cellulose
membranes
containing
AuAgNPs
for
use
heterogeneous
catalysts
reducing
pollutant
4-nitrophenol.
Incorporating
into
represents
a
significant
advancement
catalysis.
addition
being
eco-friendly,
offer
handling
potential
reusability,
which
crucial
factors
The
were
prepared
an
aqueous
medium
seeded
growth
shell
around
AuNP
seeds.
Images
recorded
by
transmission
electron
microscopy
showed
that
diameters
smaller
than
100
nm
core-shell
type.
membrane
was
dissolving
microcrystalline
ionic
liquid,
followed
regeneration
process
using
water.
Next,
bimetallic
incorporated
membrane.
analyses
revealed
contain
homogeneously
distributed
matrix,
inductively
coupled
plasma-optical
emission
spectroscopy
(ICP-OES)
0.339
wt
%
0.069%
gold.
produced
efficient
4-nitrophenol,
used
at
least
four
cycles
without
loss
efficiency.
This
material
can
be
easily
isolated
medium,
avoiding
centrifugation
filtration
processes
reuse.
study
first
supported
nonmodified
catalysts,
marking
catalysis
science.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(25), P. 12987 - 13000
Published: June 13, 2024
Cellulose
plays
a
significant
role
in
designing
efficient
and
stable
cellulose-based
metallic
catalysts,
owing
to
its
surface
functionalities.
Its
hydroxyl
groups
are
used
as
anchor
sites
for
the
nucleation
growth
of
nanoparticles
and,
result,
improve
stability
catalytic
activity.
Meanwhile,
cellulose
is
also
amenable
modifications
be
more
suitable
incorporating
stabilizing
nanoparticles.
Herein,
Ag-/Bi-doped
Mo(S,O)3
trimetallic
sulfo-oxide
anchored
on
B
N
codoped
(B–N–C)
synthesized
by
facile
approach
showed
excellent
activity
PHER
at
573.28
μmol/h
H2
with
25
mg
catalyst
under
visible
light,
92.3%
4-nitrophenol
(4-NP)
reduction
was
achieved
within
135
min
situ-generated
protons.
In
addition
codoping,
our
use
calcination
method
B–N–C
preparation
further
increases
structural
disorders
defects,
which
act
anchoring
The
Mo(S,O)3@B–N–C
active
site
stimulates
H2O
molecule
adsorption
activation
kinetics
reduces
photogenerated
charge
carrier's
recombination
rate.
Mo4+
→
Mo6+
electron
hopping
transport
O
2p
Bi
6s
orbital
overlap
facilitate
fast
transfer
enhancing
electron's
lifetime
photoinduced
carrier
mobility,
respectively.
acting
support,
provides
highly
conductive
network
that
enhances
transport,
relocated
activates
molecule,
enables
have
appreciable
performance.
Chemical Engineering Journal,
Journal Year:
2024,
Volume and Issue:
483, P. 149271 - 149271
Published: Feb. 3, 2024
The
development
of
efficient
and
cost-effective
catalysts
from
renewable
sources
is
crucial
for
sustainable
chemistry.
Herein,
we
developed
a
bio-heterogeneous
Pd-nanocatalyst
(PdNc@PA)
by
incorporating
palladium
nanoparticles
into
biodegradable
kenaf-cellulose
modified
with
poly(amidoxime)
ligands.
catalyst
has
demonstrated
remarkable
stability
exceptional
catalytic
performance
in
range
cross-coupling
including
Mizoroki-Heck,
Suzuki-Miyaura,
Tamejiro-Hiyama
reactions
inactivated
aryl
chlorides
resulting
high
yields
the
desired
coupling
products.
Additionally,
PdNc@PA
was
also
found
to
be
effective
Michael
addition
producing
N,
S,
O-alkylated
products
yields.
Furthermore,
robustness
recoverability
allowing
it
reused
across
successive
cycles
without
significant
loss
activity.
incorporation
resources
offers
an
environmentally
conscious
alternative
traditional
synthetic
approaches.
This
research
highlights
potential
utilizing
materials
as
supports,
which
could
significantly
diminish
environmental
impact
waste
production.
Moreover,
this
study
demonstrates
versatility
proficient
reusable
diverse
array
organic
reactions.
These
discoveries
provide
encouraging
pathway
towards
economically
viable
suitable
industrial
applications.
