Abstract
An
amorphous
Ni
nanoparticles‐loaded
ZnO
nanowire
array
is
controllably
constructed
on
stainless
steel
mesh
through
combined
electrodeposition
and
hydrothermal
reaction.
Its
nano‐arrayed
structure
not
only
provides
a
platform
to
achieve
stable
good
dispersion
of
nanoparticles,
but
also
helps
improve
their
ability
adsorb
4‐nitrophenolate
ions
capture
hydrogen
radicals,
thereby
accelerating
the
transfer
from
metal
hydride
complex
4‐nitrophenol.
Benefiting
abovementioned
unique
features,
it
outperforms
most
Ni‐based
catalysts.
While
30‐s
re‐electrodeposition
can
provide
extra
150
min
high
catalytic
activity
towards
reduction
waste
4‐nitrophenol
valuable
4‐aminophenol,
further
demonstrating
its
outstanding
reusability.
The
highly
general
methodology
reported
here
paves
way
economically
effectively
synthesize
various
other
arrays
different
conductive
substrates,
which
enrich
nanowire‐arrayed
catalysts,
significantly
promote
practical
utilizations
in
wide
range
environment‐related
fields.
image
Green Chemical Engineering,
Год журнала:
2023,
Номер
5(2), С. 205 - 212
Опубликована: Март 25, 2023
To
realize
economical
and
effective
removal
of
hazardous
4-nitrophenol
from
the
environment,
we
developed
an
easily
recyclable
ZnO
nanowire
array
decorated
with
Cu
nanoparticles.
Its
salix
argyracea-shaped
structure
not
only
provides
a
platform
to
achieve
stable
good
dispersion
nanoparticles,
but
also
offers
great
deal
catalytically
active
sites.
The
density
functional
theory
calculations
reveal
that
have
very
beneficial
synergistic
effect
on
their
catalytic
capability.
This
synergy
is
ascribed
electronic
localization
occurring
at
ZnO/Cu
interface,
which
helps
improve
nanoparticle's
ability
adsorb
electro-negatively
4-nitrophenolate
ions
capture
hydrogen
radicals,
thereby
accelerating
transfer
metal
hydride
complex
4-nitrophenol.
Benefiting
these
characteristics,
it
exhibits
high
efficiency
reusability
towards
reduction
waste
valuable
4-aminophenol
rate
constant
4.30
×
10−2
s−1
average
conversion
96.5%
in
90
s
during
10
cycles.
activity
superior
most
reported
noble-
or
non-noble-metal
powder,
bulk,
coating,
catalysts,
indicating
its
competitive
advantages
cost
efficiency,
as
well
enticing
application
prospects.
