Toxics,
Год журнала:
2024,
Номер
12(4), С. 283 - 283
Опубликована: Апрель 12, 2024
Biochar
materials
have
garnered
attention
as
potential
catalysts
for
peroxymonosulfate
(PMS)
activation
due
to
their
cost-effectiveness,
notable
specific
surface
area,
and
advantageous
structural
properties.
In
this
study,
a
suite
of
plantain-derived
biochar
(MBB-400,
MBB-600,
MBB-800),
possessing
well-defined
pore
structure
substantial
number
uniformly
distributed
active
sites
(oxygen
vacancy,
OVs),
was
synthesized
through
facile
calcination
process
at
varying
temperatures
(400,
600,
800
°C).
These
were
designed
the
PMS
in
degradation
sulfamethoxazole
(SMX).
Experimental
investigations
revealed
that
OVs
not
only
functioned
enriched
pollutants,
enhancing
opportunities
free
radicals
(•OH/SO4•−)
surface-bound
(SBRs)
attack
but
also
served
channels
intramolecular
charge
transfer
leaps.
This
role
contributed
reduction
interfacial
resistance,
expediting
electron
rates
with
PMS,
thereby
accelerating
decomposition
pollutants.
Capitalizing
on
these
merits,
MBB-800/PMS
system
displayed
61-fold
enhancement
conversion
rate
SMX
compared
inactivated
MBB/PMS
system.
Furthermore,
MBB-800
exhibited
less
cytotoxicity
towards
rat
pheochromocytoma
(PC12)
cells.
Hence,
straightforward
synthesis
emerges
promising
catalyst
vast
sustainable
efficient
wastewater
treatment
environmental
remediation.
Journal of Materiomics,
Год журнала:
2023,
Номер
9(5), С. 882 - 891
Опубликована: Март 21, 2023
Catalysts
that
can
rapidly
degrade
tetracycline
(TC)
in
water
without
introducing
secondary
ion
pollution
have
always
been
challenging.
Herein,
a
cobalt-based
catalyst
(CoOx@P-C)
is
prepared
so
CoOx
quantum
particles
(5–10
nm)
are
uniformly
distributed
on
linear
substrate,
and
the
outer
layer
covered
with
shell
(P-C).
The
of
provide
many
active
sites
for
reaction,
which
ensures
efficient
degradation
effect
catalyst,
30
mg/L
TC
be
completely
degraded
only
5
min.
particles'
effectively
reduce
ions'
extravasation.
combination
shell-like
structure
substrate
greatly
enhances
catalysis's
stability
into
film
practical
application.
high
catalytic
activity
CoOx@P-C
mainly
due
to
following
factors:
(1)
Uniformly
ultra-small
nanoparticles
sites.
(2)
microenvironment
formed
by
core-shell
not
but
also
provides
driving
force
improve
reaction
rate.
(3)
composite
P-C
accelerate
electron
transfer
generate
reactive
oxygen
species
short
time,
makes
extremely
rapidly.
