ACS ES&T Engineering,
Journal Year:
2023,
Volume and Issue:
3(10), P. 1521 - 1531
Published: June 24, 2023
The
oxygen
reduction
reaction
(ORR)
was
an
unavoidable
side
in
the
electro-activating
persulfate
(PS)
process,
especially
on
ORR-active
carbon
materials,
which
has
usually
been
ignored
previous
reports.
In
this
work,
O2/N2-involved
electro-activation
of
PS
system
constructed
to
confirm
role
side-reactive
ORR
oxidized
black
(OCB)
for
sulfamethoxazole
(SMX)
degradation.
With
O2
involvement,
820.8
μM
•OH
produced
by
PDS
electro-activation,
over
7
times
more
than
115.8
under
N2
aeration,
leading
a
high
SMX
removal
90.6%
(only
67.8%
aeration).
Such
huge
difference
yield
and
performance
mainly
attributed
2e–
ORR,
as-generated
H2O2
electro-activated
produce
abundant
form
advanced
homogeneous
•OH/SO4•–
oxidation
via
mutual
transformation
with
gradual
acidification.
Meanwhile,
introduction
functional
groups
defects
surface
calcined
at
600
°C
(CB600)
also
contributed
improvement
performance,
attributing
their
enhancing
effects
electro-adsorption,
electro-reduction.
Thus,
played
spontaneous
synergistic
roles
O2-involved
helping
design
highly
effective
systems
future.
Ecotoxicology and Environmental Safety,
Journal Year:
2023,
Volume and Issue:
257, P. 114908 - 114908
Published: April 19, 2023
N-doped
biochar
is
widely
used
for
activating
persulfate
to
degrade
organic
pollutants.
Which
type
of
N
atom
the
key
factor
activation
still
unclear
and
needs
be
further
explored
analyzed.
In
this
study,
four
kinds
were
prepared
using
urea
rice
husk
as
precursors,
tested
catalytic
degradation
dimethomorph.
Increasing
nitrogen
doping
level
caused
removal
efficiency
dimethomorph
in
presence
peroxymonosulfate
increased
from
16.6%
86.8%.
A
correlation
analysis
showed
that
ability
activate
PMS
mainly
related
content
pyrrole
N,
graphite
carbonyl
degree
defects.
experiments
on
electron
paramagnetic
resonance
free
radical
suppression,
reactive
species
SO4•-,
1O2,·OH
O2.−
detected,
among
which
1O2
was
found
main
agent
nonradical
pathway.
The
pathways
analyzed
based
a
total
8
products
identified
by
high-performance
liquid
chromatography-time
flight
mass
spectrometry
(HPLC-Q-TOFMS).
results
study
provide
fundamental
basis
agricultural
waste
produce
inexpensive
efficient
nonmetal
catalysts
are
highly
effective
reducing
levels
lands.
Environmental Science Water Research & Technology,
Journal Year:
2023,
Volume and Issue:
9(6), P. 1717 - 1728
Published: Jan. 1, 2023
In
this
work,
Fe–Mn/BC
particle
electrodes
with
different
loading
ratios
were
prepared
by
sol–gel
method
using
corncob
biochar
(BC)
as
carrier,
and
could
be
used
for
highly-efficient
treatment
of
coking
wastewater
three-dimensional
electrode
reactor
(3DER)
system.
Crystals,
Journal Year:
2025,
Volume and Issue:
15(5), P. 432 - 432
Published: May 1, 2025
Global
industrialization
has
intensified
the
emission
of
emerging
contaminants
(ECs),
posing
a
serious
threat
to
environment
and
human
health.
Persulfate-based
advanced
oxidation
processes
(PS-AOPs)
have
become
research
hotspot
due
their
efficient
degradation
capability
environmentally
friendly
features;
carbon-based
materials
are
ideal
catalysts
for
activating
persulfate
(PS)
tunable
electronic
structure,
abundant
active
sites,
low
cost.
This
study
summarizes
application
(graphene,
single-atom
(SACs),
etc.)
in
PS-AOPs,
provides
insights
into
mechanisms
radicals
(e.g.,
sulfate
radical
(SO4−·),
hydroxyl
(·OH))
non-radicals
1O2(singlet
oxygen),
electron
transfer).
The
removal
efficacy
antibiotics,
phenols,
dyes
was
compared,
key
pathways
were
elucidated.
In
addition,
activation
PS
can
be
accelerated,
catalytic
efficiency
improved
by
synergizing
with
ancillary
technologies
light,
electricity).
Despite
great
potential
catalysts,
large-scale
is
limited
complexity
catalyst
preparation
process
lack
selectivity
complex
water
qualities.
Future
studies
accelerate
practical
PS-AOPs
wastewater
treatment
through
precise
design
SACs
construction
multi-mechanism
synergistic
systems.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(38), P. 27712 - 27732
Published: Jan. 1, 2024
This
review
presents
a
thorough
analysis
of
the
research
and
future
development
particle
electrodes
used
for
catalyzing
pollutants
in
electrochemical
systems.
