Доклады Российской академии наук Химия науки о материалах,
Journal Year:
2023,
Volume and Issue:
512(1), P. 88 - 94
Published: Sept. 1, 2023
In
this
work,
we
consider
the
effect
of
carbon
supports
and
methods
preparing
Pd/C
catalysts
on
ability
palladium-containing
particles
to
leach
out
into
solution
during
interaction
a
catalyst
with
solvent.
The
leaching
palladium
from
substrate
surface
pure
solvents
was
studied
by
high
resolution
mass
spectrometry.
It
is
shown
that
type
leached
formed
in
depend
not
only
solvent,
but
also
method
preparation
nature
support.
has
been
found
use
phosphorus-doped
(PC)
as
support
results
being
solution.
addition,
catalytic
activity
supported
graphite
PC
equally
decreased
both
Suzuki–Miyaura
reaction
Mizoroki–Heck
reaction.
ACS Omega,
Journal Year:
2022,
Volume and Issue:
7(13), P. 11217 - 11225
Published: March 21, 2022
Highly
dispersed
Pt
nanoparticles
(∼2.5
nm)
on
phosphorus-doped
activated
coconut
shell
carbon
(Pt/P-ACC)
were
synthesized
by
a
two-step
impregnation
route.
Pt/P-ACC
showed
high
activity,
chemoselectivity,
and
reusability
toward
the
hydrogenation
of
nitrobenzene
to
p-aminophenol,
with
hydrogen
as
reducing
agent
in
sulfuric
acid.
The
effects
P
species
catalyst
structure,
surface
properties,
catalytic
performance
investigated.
It
was
found
that
had
an
excellent
activity
due
its
smaller
higher
content
surface-active
metal
compared
Pt/ACC.
Besides,
experimental
results
situ
infrared
studies
demonstrated
interaction
effect
between
imbued
electron-rich
feature,
which
decreased
adsorption
substrates
(that
is,
phenylhydroxylamine)
prevented
their
full
hydrogenation,
leading
enhanced
selectivity
during
p-aminophenol.
Nanotechnology
is
a
cutting-edge,
multidisciplinary
field
that
encompasses
vast
array
of
fundamental
and
applied
sciences
for
the
creation
use
nanoscale
materials
novel
solutions.
However,
nanoparticles
(NPs)
have
garnered
significant
attention
due
to
their
widespread
applications
in
various
industries.
release
into
aquatic
ecosystems
has
raised
concerns
about
potential
adverse
effects
on
organisms.
Nanoparticles,
unique
properties,
can
enter
water
bodies
interact
with
organisms,
potentially
disrupting
physiology,
metabolism,
growth.
This
lead
ecological
imbalances,
affecting
species
ecosystems,
necessitates
thorough
assessment
understand
risks
mitigate
harmful
impacts.
Given
findings
several
ecotoxicological
studies
documenting
negative
consequences,
there
growing
concern
today
regarding
synthetic
nanomaterials.
chapter
explores
exposure
routes
systems
entry
toxicity
mechanisms,
environmental
conditions
affect
activities,
imbalances
they
result
in.
To
it
essential
associated
nanoparticle
pollution
implement
measures
minimize
environments.
Chemistry,
Journal Year:
2022,
Volume and Issue:
4(4), P. 1147 - 1160
Published: Sept. 30, 2022
Metal
nanoparticles
are
increasingly
gaining
interest
in
the
field
of
heterogeneous
catalysis.
Here,
we
present
a
novel
strategy
for
synthesizing
sugar-coated
platinum
nanostructures
(SC-Pt-NS)
from
carbohydrates
sucrose
and
D(-)-fructose.
In
synthesis
mixture
H2PtCl6·6H2O,
carbohydrate
an
ionic
liquid
(IL)
yielded
primary
particles
homogeneous
average
size
~10
nm,
which
were
aggregated
to
hierarchical
Pt
~40–65
nm
surrounded
or
supported
by
carbohydrate.
These
facile
way
support
heterogenize
nanoparticles,
avoid
leaching
enable
easier
separation
handling.
The
catalytic
activity
SC-Pt-NS
was
shown
hydrosilylation
test
reaction
phenylacetylene
with
triethylsilane,
where
very
high
turnover
frequency
(TOF)
values
up
87,200
h−1
could
be
achieved,
while
metal
into
product
low.
Catalysis Science & Technology,
Journal Year:
2024,
Volume and Issue:
14(13), P. 3580 - 3588
Published: Jan. 1, 2024
DNA-supported
palladium
catalysts
(Pd/DNA)
have
been
used
in
imination,
hydrogenation,
cross-coupling,
and
carbonylation
reactions.
In
this
mini
review,
the
effectiveness
of
Pd/DNA
impact
DNA
support
on
reusability
recent
years
has
examined.
