The Chemical Record,
Journal Year:
2022,
Volume and Issue:
22(10)
Published: Sept. 20, 2022
Abstract
Mn‐based
cathodes
have
been
widely
explored
for
aqueous
zinc‐ion
batteries
(ZIBs),
by
virtue
of
their
high
theoretical
capacity
and
low
cost.
However,
suffer
from
poor
rate
capability
cycling
performance.
Researchers
presented
various
approaches
to
address
these
issues.
Therefore,
endeavors
scattered
in
directions
(
e.
g
.,
designing
electrode
structures,
defect
engineering
optimizing
electrolytes)
are
necessary
be
connected
through
a
systematic
review.
Hence,
we
comprehensively
overview
cathode
materials
ZIBs
the
aspects
phase
compositions,
electrochemical
behaviors
energy
storage
mechanisms,
try
build
internal
relations
between
factors.
Modification
strategies
then
introduced.
Furthermore,
this
review
also
provides
some
new
perspectives
on
future
efforts
toward
high‐energy
long‐life
ZIBs.
ACS Catalysis,
Journal Year:
2020,
Volume and Issue:
10(16), P. 9034 - 9045
Published: July 21, 2020
The
selective
catalytic
reduction
(SCR)
technique
that
converts
NOx
from
the
outlet
of
industrial
boilers
at
low
temperature
(<200
°C)
requires
catalysts
possess
both
oxidization
property
and
adsorption
ability
to
NH3.
However,
owing
unsuitable
redox
capacity,
most
NH3-SCR
such
as
MnO2/TiO2
MnO2–CeO2/TiO2
suffer
poor
activity
N2
selectivity
SO2
poisoning.
Benefiting
constructing
mesoporous
MnCeSmTiOx
amorphous
mixed
oxides
by
coprecipitation
method,
enhanced
SO2-tolerant
low-temperature
performance
was
achieved.
have
an
structure
with
a
BET
surface
area
214
m2·g–1.
NO
conversion
could
reach
nearly
100%
140–320
°C
maintain
>90%
400
gas
hourly
space
velocity
80,000
h–1.
be
maintained
≈100%
100–320
stay
up
°C.
Besides,
catalyst
preserves
higher
after
introducing
H2O
compared
without
adding
Sm.
properties,
acidic
reaction
intermediates
were
analyzed
X-ray
photoelectron
spectroscopy,
hydrogen
temperature-programmed
reduction,
ammonia
desorption,
oxygen
pyridine-IR,
thermogravimetry–differential
scanning
calorimetry,
diffuse
reflectance
infrared
Fourier
transform.
synergistic
effect
Lewis
acid
sites
oxidation
serves
for
following
Langmuir–Hinshelwood
mechanism.
Doping
Sm
into
can
increase
vacancies
transfer
electrons
Mn4+
Ce4+,
which
facilities
formation
active
adsorbed
NO2,
bidentate
nitrate,
bridging
nitrate
suppresses
poisoning
inhibiting
Ce4+.
Our
work
beneficial
modulate
capacity
on
so
eliminated
in
complex
flue
temperatures.
Environmental Science & Technology,
Journal Year:
2021,
Volume and Issue:
55(10), P. 6995 - 7003
Published: March 8, 2021
Mn-based
oxides
exhibit
outstanding
low-temperature
activity
for
the
selective
catalytic
reduction
of
NOx
with
NH3
(NH3-SCR)
compared
other
catalysts.
However,
underlying
principle
responsible
excellent
is
not
yet
clear.
Here,
atomic-level
mechanism
and
activity-limiting
factor
in
NH3-SCR
process
over
Mn-,
Fe-,
Ce-based
oxide
catalysts
are
elucidated
by
a
combination
first-principles
calculations
experimental
measurements.
We
found
that
superior
oxidative
dehydrogenation
performance
toward
reduces
energy
barriers
activation
formation
key
intermediate
NH2NO,
which
rate-determining
step
these
The
findings
this
study
advance
understanding
working
SCR
provide
fundamental
basis
development
future
generation
activity.
Environmental Science & Technology,
Journal Year:
2021,
Volume and Issue:
55(13), P. 9243 - 9254
Published: June 9, 2021
An
in-depth
understanding
of
the
surface
properties–activity
relationship
could
provide
a
fundamental
guidance
for
design
highly
efficient
perovskite-based
catalysts
control
anthropogenic
methane
emission.
Herein,
both
oxygen
vacancies
and
Con+
Lewis
acid
sites
were
purposely
introduced
on
ordered
macroporous
La0.8Sr0.2CoO3
monolithic
by
one-step
reduction
selective
etching
in
oxalic
acid,
their
synergistic
effect
combustion
was
investigated.
Combined
with
experimental
theoretical
investigations,
we
revealed
that
positively
charged
single-electron-trapped
(Vo·)
formed
an
active
pair,
which
enabled
effective
localized
electron
cloud
shift
from
Vo·
to
Con+.
The
characteristic
electronic
modulates
properties
coordination
structures,
thus
resulting
superior
activation
capacity,
lattice
mobility,
reducibility,
as
well
favorable
CH4
interaction
oxidation.
Our
work
not
only
gives
insights
into
relationships
perovskite
hydrocarbon
but
also
sheds
substantial
light
future
environmental
catalyst
modulation
pollutants
elimination.
Energy & Environmental Science,
Journal Year:
2023,
Volume and Issue:
16(8), P. 3240 - 3301
Published: Jan. 1, 2023
The
optimization
of
electronic
structure
is
a
common
internal
mechanism
all
modification
methods
and
acts
as
general
strategy
for
the
intrinsic
properties
manganese-based
materials
in
zinc-ion
batteries.
ACS Catalysis,
Journal Year:
2023,
Volume and Issue:
13(7), P. 4667 - 4674
Published: March 22, 2023
Alkali
metal
promoters
are
widely
used
to
modify
active
sites/interfaces
of
heterogeneous
catalysts
for
numerous
industrial
processes.
However,
the
interplay
between
an
alkali
and
support,
a
crucial
catalytic
parameter,
has
been
scarcely
investigated
in
controlling
activation
behaviors
intermediates
improving
catalysis.
Herein,
we
report
that
K–ZrO2
interfaces
can
boost
production
higher
alcohols
(HA)
from
CO2
hydrogenation
over
amorphous
ZrO2-supported
K–Cu–Fe
catalyst
(KFeCu/a-ZrO2).
In
situ
spectroscopy
chemisorption
demonstrate
strong
interactions
K
ZrO2
induce
formation
surface
Zrδ+
sites/oxygen
vacancies
at
interfaces,
thus
providing
plenty
nondissociative
CO
sites.
The
improved
molecular
adsorption
capacity
expedites
insertion
reaction
(*CHx
+
*CO
→
*CHx-CO)
Cu–Fe5C2
thereby
driving
HA
synthesis
with
nearly
4.6
times
activity
comparison
KFeCu/SiO2
catalyst.
At
optimal
conditions
320
°C,
4
MPa,
12
L
gcat–1
h–1,
KFeCu/a-ZrO2
shows
space
time
yield
125.0
mg
ranking
top
level
among
reported
single-component
literature.
Most
importantly,
this
work
provides
in-depth
insight
into
promoter–support
promoting
performance.
