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
Proceedings of the National Academy of Sciences,
Год журнала:
2022,
Номер
119(31)
Опубликована: Июль 25, 2022
Nonradical
Fenton-like
catalysis
offers
opportunities
to
overcome
the
low
efficiency
and
secondary
pollution
limitations
of
existing
advanced
oxidation
decontamination
technologies,
but
realizing
this
on
transition
metal
spinel
oxide
catalysts
remains
challenging
due
insufficient
understanding
their
catalytic
mechanisms.
Here,
we
explore
origins
selectivity
Fe-Mn
identify
electron
delocalization
surface
active
site
as
key
driver
its
nonradical
catalysis.
Through
fine-tuning
crystal
geometry
trigger
superexchange
interaction
at
octahedra,
ZnFeMnO4
with
high-degree
Mn-O
unit
was
created
enable
near
100%
activation
peroxymonosulfate
(PMS)
unprecedented
utilization
efficiency.
The
resulting
surface-bound
PMS*
complex
can
efficiently
oxidize
electron-rich
pollutants
extraordinary
degradation
activity,
selectivity,
good
environmental
robustness
favor
water
applications.
Our
work
provides
a
molecule-level
bimetallic
interactions
oxides,
which
may
guide
design
low-cost
oxides
for
more
selective
efficient
Environmental Science & Technology,
Год журнала:
2021,
Номер
55(8), С. 5357 - 5370
Опубликована: Март 17, 2021
Pollutant
degradation
via
periodate
(IO4-)-based
advanced
oxidation
processes
(AOPs)
provides
an
economical,
energy-efficient
way
for
sustainable
pollution
control.
Although
single-atomic
metal
activation
(SMA)
can
be
exploited
to
optimize
the
process
and
understand
associated
mechanisms
governing
IO4--based
AOPs,
studies
on
this
topic
are
rare.
Herein,
we
demonstrated
first
instance
of
using
SMA
IO4-
analysis
by
employing
atomically
dispersed
Co
active
sites
supported
N-doped
graphene
(N-rGO-CoSA)
activators.
N-rGO-CoSA
efficiently
activated
organic
pollutant
over
a
wide
pH
range
without
producing
radical
species.
The
species
underwent
stoichiometric
decomposition
generate
iodate
(IO3-)
Whereas
Co2+
Co3O4
could
not
drive
activation;
Co-N
coordination
exhibited
high
efficiency.
conductive
matrix
reduced
contaminants/electron
transport
distance/resistance
these
reactions
boosted
capacity
working
in
conjunction
with
centers.
N-rGO-CoSA/IO4-
system
substrate-dependent
reactivity
that
was
caused
iodyl
(IO3·)
radicals.
Electrochemical
experiments
decomposed
pollutants
electron-transfer-mediated
nonradical
processes,
where
N-rGO-CoSA/periodate*
metastable
complexes
were
predominant
oxidants,
thereby
opening
new
avenue
designing
efficient
activators
selective
pollutants.
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
