Environmental Science & Technology,
Год журнала:
2021,
Номер
55(13), С. 9189 - 9198
Опубликована: Май 28, 2021
Many
reagents
as
electron
sacrificers
have
been
recently
investigated
to
induce
decomposition
of
permanganate
(KMnO4)
produce
highly
reactive
intermediate
Mn
species
toward
oxidation
organic
contaminants;
however,
this
strategy
meanwhile
causes
low
KMnO4
utilization
efficiency.
This
study
surprisingly
found
that
graphite
can
mediate
direct
transfer
from
organics
(e.g.,
sulfamethoxazole
(SMX))
KMnO4,
resulting
in
high
efficiency,
rather
than
reductive
sites
graphite-induced
conversion
species.
The
galvanic
process
(GOP)
and
comparative
experiments
different
contaminants
prove
the
KMnO4/graphite
system
mainly
extracts
electrons
via
a
one-electron
pathway
instead
two-electron
pathway.
More
importantly,
has
superior
reusability,
keep
long-lasting
reactivity,
efficiency
elevates
significantly
after
each
cycle
graphite.
transformation
SMX
includes
self-coupling,
hydroxylation,
oxidation,
hydrolytic
reaction.
work
will
improve
insights
into
electron-transfer
mechanism
unveil
advantages
efficient
KMnO4-based
technologies
environmental
remediation.
Energy & Fuels,
Год журнала:
2021,
Номер
35(8), С. 6504 - 6526
Опубликована: Апрель 5, 2021
Graphitic
carbon
nitride
(g-C3N4),
a
polymeric
semiconductor,
has
become
rising
star
for
photocatalytic
energy
conversion
because
of
its
facile
accessibility,
metal-free
nature,
low
cost,
and
environmentally
benign
properties.
This
work
reviews
the
latest
progress
g-C3N4-based
materials
in
visible-light-driven
water
splitting
to
hydrogen.
It
begins
with
brief
history
g-C3N4,
followed
by
various
engineering
strategies
such
as
elemental
doping,
copolymerization,
crystalline
tailoring,
surface
engineering,
single-atom
modification,
elevated
decomposition.
In
addition,
synthesis
g-C3N4
different
dimensions
(0D,
1D,
2D,
3D)
configurations
series
heterojunctions
(type
II,
Z-scheme,
S-scheme,
g-C3N4/metal,
g-C3N4/carbon
heterojunctions)
were
also
discussed
their
improvement
hydrogen
production.
Lastly,
challenges
opportunities
nanomaterials
are
provided.
is
anticipated
that
this
review
will
promote
further
development
emerging
more
efficiency
Environmental Science & Technology,
Год журнала:
2021,
Номер
55(13), С. 9189 - 9198
Опубликована: Май 28, 2021
Many
reagents
as
electron
sacrificers
have
been
recently
investigated
to
induce
decomposition
of
permanganate
(KMnO4)
produce
highly
reactive
intermediate
Mn
species
toward
oxidation
organic
contaminants;
however,
this
strategy
meanwhile
causes
low
KMnO4
utilization
efficiency.
This
study
surprisingly
found
that
graphite
can
mediate
direct
transfer
from
organics
(e.g.,
sulfamethoxazole
(SMX))
KMnO4,
resulting
in
high
efficiency,
rather
than
reductive
sites
graphite-induced
conversion
species.
The
galvanic
process
(GOP)
and
comparative
experiments
different
contaminants
prove
the
KMnO4/graphite
system
mainly
extracts
electrons
via
a
one-electron
pathway
instead
two-electron
pathway.
More
importantly,
has
superior
reusability,
keep
long-lasting
reactivity,
efficiency
elevates
significantly
after
each
cycle
graphite.
transformation
SMX
includes
self-coupling,
hydroxylation,
oxidation,
hydrolytic
reaction.
work
will
improve
insights
into
electron-transfer
mechanism
unveil
advantages
efficient
KMnO4-based
technologies
environmental
remediation.
