Environmental Science Nano,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
This
paper
studies
the
intrinsic
electrochemical
mechanisms
of
supporting
electrolytes
and
their
interaction
with
nano-PbO
2
during
oxidation
tetracycline,
providing
insights
into
role
in
enhancing
degradation
efficiency.
Sustainable Horizons,
Journal Year:
2024,
Volume and Issue:
11, P. 100103 - 100103
Published: March 29, 2024
The
one-electron
water
oxidation
reaction
(WOR)
to
generates
hydroxyl
radicals
(•OH)
plays
a
pivotal
role
in
electrochemical
advanced
processes
(EAOPs).
In
this
study,
we
present
novel
and
facile
strategy
involving
Ho-doping
regulate
the
electronic
configuration
of
conventionally
nonactive
PbO2
electrode.
Experimental
findings
demonstrate
that
doped
with
2.4%
Ho
achieves
highest
degradation
performance
sulfamethazine
(SMZ)
(∼100%;
kobs
=
0.093
min−1)
•OH
generation
efficiency
relatively
concentration
1.9
×
107.
electrodes
exhibit
notable
enhancement
compare
undoped
electrode,
which
elevating
SMZ
by
factors
1.45
3.8,
respectively.
Electrochemical
characterization
results
elucidate
modulation
electron
transfer
rate
oxygen
evolution
potential
are
crucial
governing
Ho-doped
anode.
Specifically,
maintaining
suitably
high
(OEP)
enables
thermodynamically
feasible
production
•OH,
while
fast
ensures
H2O+
(the
precursor
•OH)
kinetic
feasibility.
Furthermore,
pathway
for
is
proposed
based
on
identification
transformation
mechanism
using
density
functional
calculation
(DFT)
detection
intermediates
via
LC-MS/MS.
This
study
provides
an
universal
simultaneously
enhancing
OEP
optimizing
EAOP
anode
through
anodic
configuration,
thereby
advancing
field
efficient
treatment
applications.