ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
6(3), P. 1029 - 1041
Published: Feb. 20, 2024
Substituting
the
oxygen
evolution
reaction
by
urea
oxidation
(UOR)
is
thermodynamically
more
favorable
for
energy-saving
hydrogen
production.
However,
UOR
suffers
from
sluggish
kinetics
due
to
its
complex
six-electron
transfer
processes
combined
with
conversion
of
complicated
intermediates.
Herein,
LaNiO3–NiO
heterojunctions
successfully
constructed
accelerate
UOR.
Systematic
experimental
investigation
and
theoretical
calculation
endorse
that
self-driven
local
charge
redistribution
takes
place
at
Janus
LaNiO3/NiO
interface,
generating
nucleophilic
electrophilic
regions.
Such
a
unique
structure
targeted
adsorption
amino
groups
carbonyl
groups,
thus
promoting
rupture
C–N
bonds
in
urea.
In
addition,
build-in
electric
field
triggered
heterojunction
could
effectively
diminish
stepwise
energy
barrier,
accelerating
desorption
*CO2.
As
result,
exhibits
superior
performance,
delivering
current
density
10
mA
cm–2
1.34
V
(vs
RHE).
This
work
supplies
valuable
insights
fundamental
understanding
rational
construction
efficient
catalyst.
Carbon Neutralization,
Journal Year:
2024,
Volume and Issue:
3(4), P. 557 - 583
Published: May 8, 2024
Abstract
Currently,
the
concentration
of
carbon
dioxide
(CO
2
)
has
exceeded
400
ppm
in
atmosphere.
Thus,
there
is
an
urgent
need
to
explore
CO
reduction
and
utilization
technologies.
Photocatalytic
technology
can
convert
valuable
hydrocarbons
(CH
4
,
CH
3
OH,
C
H
5
etc.),
realizing
conversion
solar
energy
chemical
as
well
solving
problems
fossil
fuel
shortage
global
warming.
Graphitic
nitride
(g‐C
N
),
a
two‐dimensional
nonmetallic
semiconductor
material,
shows
great
potential
field
photoreduction
due
its
moderate
bandgap,
easy
synthesis
method,
low
cost,
visible
light
response
properties.
This
review
elaborates
research
progress
g‐C
‐based
photocatalysts
for
photocatalytic
reduction.
The
modification
strategies
(e.g.,
morphology
engineering,
elemental
doping,
crystallinity
modulation,
cocatalyst
modification,
constructing
heterojunction)
application
have
been
discussed
detail.
Finally,
challenges
development
prospects
materials
are
presented.
ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
6(3), P. 1029 - 1041
Published: Feb. 20, 2024
Substituting
the
oxygen
evolution
reaction
by
urea
oxidation
(UOR)
is
thermodynamically
more
favorable
for
energy-saving
hydrogen
production.
However,
UOR
suffers
from
sluggish
kinetics
due
to
its
complex
six-electron
transfer
processes
combined
with
conversion
of
complicated
intermediates.
Herein,
LaNiO3–NiO
heterojunctions
successfully
constructed
accelerate
UOR.
Systematic
experimental
investigation
and
theoretical
calculation
endorse
that
self-driven
local
charge
redistribution
takes
place
at
Janus
LaNiO3/NiO
interface,
generating
nucleophilic
electrophilic
regions.
Such
a
unique
structure
targeted
adsorption
amino
groups
carbonyl
groups,
thus
promoting
rupture
C–N
bonds
in
urea.
In
addition,
build-in
electric
field
triggered
heterojunction
could
effectively
diminish
stepwise
energy
barrier,
accelerating
desorption
*CO2.
As
result,
exhibits
superior
performance,
delivering
current
density
10
mA
cm–2
1.34
V
(vs
RHE).
This
work
supplies
valuable
insights
fundamental
understanding
rational
construction
efficient
catalyst.
