ACS ES&T Engineering,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
In
recent
times,
advanced
oxidation
processes
(AOPs)
based
on
sulfite
activation
via
transition
metal
ions
have
gained
significant
attention
for
water
decontamination.
this
work,
we
unexpectedly
discovered
that
Mn(II)
was
inefficient
in
treatment.
Intriguingly,
the
introduction
of
amino
ligands
such
as
nitrilotriacetic
acid
and
picolinic
significantly
enhanced
performance
activation,
enabling
effective
abatement
contaminants.
By
combining
quenching,
chemical
probing,
18O
isotope
tracing,
electrochemical
experiments,
study
addressed
why
Mn(II)/sulfite
system
sluggish
contaminants
degradation,
how
Mn(V)
generated
Mn(II)/sulfite/amino
ligand
system,
different
complexing
exhibited
distinct
performances.
We
demonstrated
notably
activity
with
production
stabilized
Mn(III),
which
underwent
further
conversion
to
species,
resulting
rapid
degradation
This
represents
first
discovery
unexpected
formation
from
low-valence
manganese
a
sulfite-based
system.
Furthermore,
spectral
characteristics
species
under
environmental
pH
conditions
were
identified
time.
These
findings
introduce
novel
process
decontamination
will
broaden
our
understanding
sulfite-activation-based
AOPs
well
application
chemistry
treatment
beyond.
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(2), С. 677 - 677
Опубликована: Янв. 15, 2025
The
design
of
efficient
advanced
oxidation
processes
(AOPs)
in
the
presence
bicarbonate
has
long
attracted
considerable
attention
field
environmental
catalysis.
In
this
study,
sodium
(NaHCO3)
as
one
most
abundant
substances
actual
water,
was
introduced
to
a
NaClO/Ru(III)
system
enhance
removal
acid
orange
7(AO7).
NaHCO3
could
significantly
improve
efficiency
Ru(III)/NaClO
process
HCO3−
at
pH
range
6.9–10.0.
Ru(V)=O
identified
dominant
reactive
species
involved
degradation
pollutants
NaHCO3/NaClO/Ru(III)
system.
interacts
with
Ru(III)
generate
Ru(III)-HCO3−,
which
enhances
activation
performance
under
neutral
or
alkaline
conditions.
AO7
enhanced
increasing
concentration,
and
rate
constant
increased
more
than
2-fold
4-fold
concentrations
from
0
100
mM
6.9
8.5.
This
study
proposed
novel
strategy
environmentally
friendly
inorganic
ligands
highlights
its
potential
applications
pollutants.
