Chemosphere,
Journal Year:
2020,
Volume and Issue:
269, P. 129325 - 129325
Published: Dec. 17, 2020
Electro-Fenton
(EF)
technique
has
gained
significant
attention
in
recent
years
owing
to
its
high
efficiency
and
environmental
compatibility
for
the
degradation
of
organic
pollutants
contaminants
emerging
concern
(CECs).
The
an
EF
reaction
relies
primarily
on
formation
hydrogen
peroxide
(H2O2)
via
2e─
oxygen
reduction
(ORR)
generation
hydroxyl
radicals
(●OH).
This
could
be
achieved
through
efficient
cathode
material
which
operates
over
a
wide
pH
range
(pH
3–9).
Herein,
current
progresses
advancements
carbonaceous
materials
reactions
are
comprehensively
reviewed.
insights
various
such
as,
activated
carbon
fibres
(ACFs),
carbon/graphite
felt
(CF/GF),
nanotubes
(CNTs),
graphene,
aerogels
(CAs),
ordered
mesoporous
(OMCs),
etc.
discussed
inclusively.
Transition
metals
hetero
atoms
were
used
as
dopants
enhance
homogeneous
heterogeneous
reactions.
Iron-functionalized
cathodes
widened
working
window
1–9)
limited
energy
consumption.
mechanism,
reactor
configuration,
kinetic
models,
explained.
Techno
economic
analysis
revealed
that
anode
raw
contributed
significantly
overall
cost.
It
is
concluded
most
follow
pseudo-first
order
kinetics
rotating
provide
best
H2O2
production
lab
scale.
challenges,
future
prospects
commercialization
wastewater
treatment
also
discussed.
Accounts of Chemical Research,
Journal Year:
2019,
Volume and Issue:
52(3), P. 596 - 604
Published: Feb. 15, 2019
Growing
worldwide
population,
climate
change,
and
decaying
water
infrastructure
have
all
contributed
to
a
need
for
better
treatment
conveyance
model.
Distributed
is
one
possible
solution,
which
relies
on
the
local
of
from
various
sources
degree
dependent
its
intended
use
and,
finally,
distribution
consumers.
This
distributed,
fit-for-purpose
strategy
requires
development
new
modular
point-of-use
point-of-entry
technologies
bring
this
idea
fruition.
Electrochemical
potential
contribute
vision,
as
they
several
advantages
over
established
technologies.
ability
simultaneously
treat
multiple
classes
contaminants
through
in
situ
production
chemicals
at
electrode
surfaces
with
low
power
energy
demands,
thereby
allowing
construction
compact,
that
require
little
maintenance
can
be
easily
automated
or
remotely
controlled.
In
addition,
these
offer
opportunity
recovery
fuels
cathode,
further
reduce
their
footprint.
spite
advantages,
there
are
challenges
overcome
before
widespread
adoption
electrochemical
possible.
Account
will
focus
primarily
destructive
electrolytic
allow
removal
without
residual
management.
Most
important
fabricate
nontoxic,
inexpensive,
high-surface-area
electrodes
long
operational
life
operate
unwanted
toxic
byproducts.
Overcoming
barriers
decrease
capital
costs
necessary
promote
more
sustainable
solutions.
However,
accomplish
goal,
reprioritization
research
needed.
Current
focused
investigating
individual
contaminant
transformation
pathways
mechanisms.
While
understanding
technologies,
additional
work
needed
developing
high-surface-area,
stable
materials,
minimizing
byproduct
formation,
determining
cycle
technoeconomic
analyses
commercialization.
Better
critical
areas
strategic
deployment
future.
Advanced Materials,
Journal Year:
2020,
Volume and Issue:
32(17)
Published: March 12, 2020
Sulfidized
nanoscale
zerovalent
iron
(SNZVI)
is
a
promising
material
for
groundwater
remediation.
However,
the
relationships
between
sulfur
content
and
speciation
properties
of
SNZVI
materials
are
unknown,
preventing
rational
design.
Here,
effects
on
crystalline
structure,
hydrophobicity,
speciation,
corrosion
potential,
electron
transfer
resistance
determined.
Sulfur
incorporation
extended
nano-Fe0
BCC
lattice
parameter,
reduced
Fe
local
vacancies,
lowered
to
transfer.
Impacts
main
species
(FeS
FeS2
)
hydrophobicity
(water
contact
angles)
consistent
with
density
functional
theory
calculations
these
FeSx
phases.
These
well
explain
reactivity
selectivity
during
reductive
dechlorination
trichloroethylene
(TCE),
hydrophobic
contaminant.
Controlling
amount
in
made
it
highly
reactive
(up
0.41
L
m-2
d-1
selective
TCE
degradation
over
water
240
moles
per
mole
H2
O),
an
efficiency
up
70%,
values
54-fold,
98-fold,
160-fold
higher
than
NZVI,
respectively.
findings
can
guide
design
robust
tailored
specific
application
scenarios.
Applied Catalysis B Environment and Energy,
Journal Year:
2023,
Volume and Issue:
328, P. 122430 - 122430
Published: Feb. 4, 2023
Updated
water
directives
and
ambitious
targets
like
the
United
Nations'
Sustainable
Development
Goals
(SDGs)
have
emerged
in
last
decade
to
tackle
scarcity
contamination.
Although
numerous
strategies
been
developed
remove
pollutants,
it
is
still
necessary
enhance
their
effectiveness
against
toxic
biorefractory
organic
molecules.
Comprehensive
reviews
highlighted
appealing
features
of
electrochemical
technologies,
but
much
progress
has
made
recent
years.
In
this
timely
review,
a
critical
discussion
on
latest
innovations
perspectives
most
promising
tools
for
wastewater
treatment
presented.
The
work
describes
performance
electrocatalytic
anodes
direct
oxidation,
oxidation
mediated
by
electrogenerated
active
chlorine,
reduction
as
well
coupled
approaches
synchronous
anodic
cathodic
processes
combined
with
homogeneous
heterogeneous
catalysis.
section
devoted
assessment
scale-up
issues
increase
technology
readiness
level.
Electrochemistry Communications,
Journal Year:
2021,
Volume and Issue:
123, P. 106912 - 106912
Published: Jan. 9, 2021
Organic
pollutants
in
domestic
sewage,
agricultural
runoff,
industrial
wastewater,
and
contaminated
land
pose
a
serious
threat
to
human
beings
as
well
ecosystems.
Anodic
oxidation
is
one
of
the
technologies
most
commonly
used
for
degradation
organic
pollutants.
In
this
review,
we
present
current
status
promising
anodic
pollutants,
with
fundamental
insights
into
anode
materials,
operating
conditions
mechanisms.
Firstly,
anodes
based
on
metallic
Pt,
metal
oxides
(RuO2,
IrO2,
PbO2
SnO2),
carbon
(BDD
others)
are
critically
reviewed.
Secondly,
strategies
effective
removal
wastewater
under
appropriate
systematically
investigated.
Thirdly,
mechanism
comprehensively
summarized
illustrations
how
can
be
broken
down
small
molecules
low
or
zero
toxicity.
Finally,
conclude
some
future
perspectives
application
oxidation.
Science,
Journal Year:
2021,
Volume and Issue:
371(6528), P. 507 - 514
Published: Jan. 28, 2021
Vicinal
dibromides
and
dichlorides
are
important
commodity
chemicals
indispensable
synthetic
intermediates
in
modern
chemistry
that
traditionally
synthesized
using
hazardous
elemental
chlorine
bromine.
Meanwhile,
the
environmental
persistence
of
halogenated
pollutants
necessitates
improved
approaches
to
accelerate
their
remediation.
Here,
we
introduce
an
electrochemically
assisted
shuttle
(e-shuttle)
paradigm
for
facile
scalable
interconversion
alkenes
vicinal
dihalides,
a
class
reactions
can
be
used
both
synthesize
useful
dihalogenated
molecules
from
simple
recycle
waste
material
through
retro-dihalogenation.
The
reaction
is
demonstrated
1,2-dibromoethane,
as
well
1,1,1,2-tetrachloroethane
or
1,2-dichloroethane,
dibrominate
dichlorinate,
respectively,
wide
range
setup
with
inexpensive
graphite
electrodes.
Conversely,
hexachlorinated
persistent
pollutant
lindane
could
fully
dechlorinated
benzene
soil
samples
alkene
acceptors.
