Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(49), P. 20871 - 20880
Published: Nov. 29, 2023
Organic
acid
is
prevalent
in
underground
environments
and,
against
the
backdrop
of
biogeochemical
cycles
on
Earth,
holds
significant
importance
degradation
contaminants
by
redox-active
minerals.
While
earlier
studies
role
organic
generation
reactive
oxygen
species
(ROS)
primarily
concentrated
electron
shuttle
or
ligand
effects,
this
study
delves
into
combined
impacts
decomposition
and
Mackinawite
(FeS)
oxidation
contaminant
transformation
under
dark
aerobic
conditions.
Using
bisphenol
A
(BPA)
as
a
model,
our
findings
showed
that
oxalic
(OA)
notably
outperforms
other
acids
enhancing
BPA
removal,
attaining
rate
constant
0.69
h-1.
Mass
spectrometry
characterizations,
coupled
with
anaerobic
treatments,
advocate
for
molecule-O2
activation
principal
mechanism
behind
pollutant
transformation.
Comprehensive
results
unveiled
carbon
center
radicals,
initiated
hydroxyl
radical
(•OH)
attack,
serve
primary
agents
oxidation,
accounting
at
least
93.6%
total
•OH
generation.
This
dynamic,
driven
concurrent
formation
carbon-centered
ensures
steady
supply
electrons
ROS
The
obtained
information
highlights
OA
natural
attenuation
pollutants
offers
innovative
strategies
FeS
acid-coupled
decontamination.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(6)
Published: Oct. 22, 2023
Abstract
The
widely
discussed
single‐atom
catalysts
(SACs)
are
regarded
as
a
kind
of
attractive
material
for
sulfate
radical‐based
advanced
oxidation
processes
(SR‐AOPs)
owing
to
their
maximum
atomic
utilization
efficiency
and
outstanding
stability.
Currently,
metal–organic
frameworks
(MOFs)
have
appeared
prospective
precursors
building
SACs
due
extensive
chelating
sites,
functional
adjustability,
structural
tunability.
However,
there
few
critical
systematic
reviews
about
the
application
MOF‐derived
in
SR‐AOPs,
especially
in‐depth
analysis
mechanisms.
Therefore,
this
review
seeks
offer
thorough
summary
development
SR‐AOPs.
First,
unique
advantages
MOFs
derivative
thoroughly.
Afterward,
current
synthesis
strategies
elaborated
categorically
unveil
formation
process
single
atoms
coordination
environments.
Notably,
roles
different
reaction
sites
including
generation
reactive
species
mediating
electron
transfer
further
analyzed
explain
mechanisms
comprehensively.
Thereafter,
characterization
techniques
theoretical
calculations
studies
also
highlighted.
Eventually,
insights
into
present
challenges
future
developments
proposed,
which
expected
enhance
catalytic
Chemical Society Reviews,
Journal Year:
2023,
Volume and Issue:
52(22), P. 7673 - 7686
Published: Jan. 1, 2023
Unique
activation
mechanisms
of
oxidants
by
metal
single
atom
catalysts
for
water
treatment
were
compared
with
conventional
advanced
oxidation
processes.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(49), P. 20871 - 20880
Published: Nov. 29, 2023
Organic
acid
is
prevalent
in
underground
environments
and,
against
the
backdrop
of
biogeochemical
cycles
on
Earth,
holds
significant
importance
degradation
contaminants
by
redox-active
minerals.
While
earlier
studies
role
organic
generation
reactive
oxygen
species
(ROS)
primarily
concentrated
electron
shuttle
or
ligand
effects,
this
study
delves
into
combined
impacts
decomposition
and
Mackinawite
(FeS)
oxidation
contaminant
transformation
under
dark
aerobic
conditions.
Using
bisphenol
A
(BPA)
as
a
model,
our
findings
showed
that
oxalic
(OA)
notably
outperforms
other
acids
enhancing
BPA
removal,
attaining
rate
constant
0.69
h-1.
Mass
spectrometry
characterizations,
coupled
with
anaerobic
treatments,
advocate
for
molecule-O2
activation
principal
mechanism
behind
pollutant
transformation.
Comprehensive
results
unveiled
carbon
center
radicals,
initiated
hydroxyl
radical
(•OH)
attack,
serve
primary
agents
oxidation,
accounting
at
least
93.6%
total
•OH
generation.
This
dynamic,
driven
concurrent
formation
carbon-centered
ensures
steady
supply
electrons
ROS
The
obtained
information
highlights
OA
natural
attenuation
pollutants
offers
innovative
strategies
FeS
acid-coupled
decontamination.