Abstract:
Exploring
flexible,
economical,
and
environmentally
friendly
peracetic
acid
(PAA)
activation
methods
is
crucial
in
water
purification.
In
this
work,
a
cobalt-nitrogen-doped
porous
carbon
(Co-N-C)
composite
was
synthesized
by
direct
carbonization
of
ZIF-67,
employed
as
PAA
activator
to
enhance
norfloxacin
(NX)
degradation.
Rapid
degradation
NX
observed
the
Co-N-C/PAA
system
over
wide
pH
range
with
high
resistance
common
radical
scavengers,
anions,
natural
organics.
The
Co
species
surface
functional
groups
Co-N-C
were
primary
active
sites
for
activation.
hydroxyl
radicals
(HO·),
organic
free
(R-O·),
singlet
oxygen
(1O2),
(IV)
play
significant
roles
removal
NX.
Two
probable
pathways
confirmed
density
theory
high-performance
liquid
chromatography-mass
spectrometry.
biological
toxicity
after
reaction
effectively
reduced
via
system.
This
study
should
be
valuable
promoting
research
on
pollutants
ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
Electrochemical
advanced
oxidation
process
represents
a
promising
strategy
for
water
decontamination,
but
the
parasitic
anodic
side
oxygen
evolution
reaction
always
causes
low
energy
utilization
efficiency.
In
this
study,
we
address
limitation
of
developing
an
electrocatalytic
self-sufficiency
system.
This
system
established
integrated
that
ran
solely
on
O2
produced
by
evolution,
followed
transformation
into
H2O2
at
nanoconfined
Fe2O3
cathode,
which
then
led
to
generation
1O2.
The
performance
decontamination
was
evaluated
using
tetracycline
(TC),
bisphenol
A
(BPA),
and
perfluorooctanoic
acid
(PFOA)
as
model
emerging
contaminants.
When
polarization
applied
2.0
V
vs
standard
hydrogen
electrode,
removal
TC,
BPA,
PFOA
with
flow
rate
10
mL
min–1
could
reach
90.1%,
92.1%,
62.2%,
respectively.
Electron
spin
resonance
radical
quenching
results
indicated
1O2
main
reactive
species
TC
BPA
decomposition,
whereas
decomposition
contributed
direct
electron
transfer.
intermediate
toxicity
predicted
be
reduced,
excellent
anti-interference
ability
proved
in
actual
water.
These
findings
suggest
reagent-free
oxygen-dependent
sustainable
decontamination.
Energy Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 29, 2024
Innovative
technologies
based
on
the
sulfate
radical
advanced
oxidation
process
are
attracting
more
attention
for
degradation
of
dyes
in
impure
water.
Herein,
cobalt‐doped
zinc
aluminum
layered
double
hydroxide
(LDH)
catalysts
synthesized
assembly
LDHs
efficient
activation
peroxymonosulfate
and
simultaneous
catalytic
rhodamine
B
(RhB)
methyl
orange
(MO).
Cobalt
metal
is
incorporated
into
ZnAl‐LDH
lattice
to
accelerate
performance
ZnAl‐LDHs.
The
experimental
results
show
that
Co–ZnAl‐LDH
(Co
=
0.05
mmol)
system
demonstrates
remarkable
RhB
MO
with
maximum
efficiencies
98.97%
98.04%,
respectively,
through
attack
reactive
oxygen
species
electron
transfer
processes.
Furthermore,
structural
stability
catalyst
make
it
promising
practical
water
treatment
as
well
promoting
its
reuse
ability.
