In
peroxonosulfate
(PMS)-based
Fenton-like
reaction,
there
were
two
pathways
for
PMS
activation:
radical
path
on
transition
metal
surface
and
non-radical
heteroatom-doped
graphitized
carbon
surface.
this
work,
CoS2/nitrogen-atom
doped
(NC)@SiO2
yolk@shell
nanoreactor
was
designed,
CoS2/NC
surface,
these
paths
performed
parallelly
inside
the
nanoreactor,
leading
to
an
accelerated
tetracycline
degradation
rate.
90.9%
of
removal
efficiency
realized
within
15
min,
much
higher
than
reference
samples,
advantages
illustrated
in
detail.
Moreover,
benefiting
from
SiO2
shell
protection,
leached
cobalt
ion
only
0.27
mg/L,
which
1/20
without
shell.
During
mechanism
study,
activation
identified
by
electron
paramagnetic
resonance
tests,
trapping
experiments
electrochemical
where
SO4•-
1O2
responsible
(TC)
degradation.
This
study
provided
a
new
strategy
simultaneously
accelerate
using
it
might
inspire
other
high
efficient
catalyst
design
PMS-based
reaction.
