Environmental Science & Technology,
Год журнала:
2023,
Номер
57(38), С. 14482 - 14492
Опубликована: Сен. 12, 2023
It
is
critical
to
discover
a
non-noble
metal
catalyst
with
high
catalytic
activity
capable
of
replacing
palladium
in
electrochemical
reduction.
In
this
work,
highly
efficient
single-atom
Co-N/C
was
synthesized
metal-organic
frameworks
(MOFs)
as
precursor
for
dehalogenation.
X-ray
absorption
spectroscopy
(XAS)
revealed
that
exhibited
Co-N4
configuration,
which
had
more
active
sites
and
faster
charge-transfer
rate
thus
enabled
the
removal
florfenicol
(FLO)
at
wide
pH,
achieving
constant
3.5
2.1
times
N/C
commercial
Pd/C,
respectively.
The
defluorination
dechlorination
efficiencies
were
67.6
95.6%,
respectively,
extremely
low
Co
leaching
(6
μg
L-1),
energy
consumption
(22.7
kWh
kg-1),
turnover
frequency
(TOF)
(0.0350
min-1),
demonstrating
excellent
dehalogenation
performance.
Spiking
experiments
density
functional
theory
(DFT)
verified
site
lowest
barrier
forming
atomic
hydrogen
(H*)
(ΔGH*).
Capture
experiments,
electron
paramagnetic
resonance
(EPR),
tests,
situ
Fourier
transform
infrared
(FTIR)
proved
H*
direct
transfer
responsible
Toxicity
assessment
indicated
FLO
toxicity
decreased
significantly
after
This
work
develops
broad
application
prospects
electrocatalytic
Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Июль 28, 2023
The
effective
separation
of
toxic
chemicals,
including
chemical
warfare
agents
(CWAs),
from
the
environment
via
adsorption
is
great
importance
because
such
chemicals
pose
a
significant
threat
to
humans
and
ecosystems.
To
this
end,
development
porous
adsorbents
for
CWA
removal
has
received
attention.
Understanding
specific
interactions
between
CWAs
must
precede
adsorbents.
Herein,
we
report
relationship
capacity
ZIF-8
its
morphological
surface
characteristics.
Four
types
ZIF-8,
which
have
different
morphologies
(such
as
cubic,
rhombic
dodecahedron,
leaf-
plate-shaped
samples),
were
selectively
prepared.
four
found
charges
owing
dissimilarly
exposed
components
on
surfaces
additionally
incorporated
components.
be
closely
related
their
capacities
simulants
2-chloroethyl
ethyl
sulfide
(CEES)
dimethyl
methyl
phosphonate
(DMMP).
Cubic
with
most
positive
charge
among
samples,
exhibited
highest
CEES
DMMP
polar
interaction.
Moreover,
excellent
recyclability
without
losing
critical
or
structural
changes.
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Фев. 24, 2024
The
adsorption
and
activation
of
pollutant
molecules
oxygen
play
a
critical
role
in
the
oxidation
reaction
volatile
organic
compounds
(VOCs).
In
this
study,
superior
ability
was
achieved
by
modulating
interaction
between
Pt
nanoparticles
(NPs)
UiO-66
(U6)
through
spatial
position
effect.
Pt@U6
exhibits
excellent
activity
toluene,
acetone,
propane,
aldehyde
reactions.
Spectroscopic
studies,
16O2/18O2
kinetic
isotopic
experiments,
density
functional
theory
(DFT)
results
jointly
reveal
that
encapsulated
NPs
possess
higher
electron
d-band
center,
which
is
conducive
for
dissociation
oxygen.
toluene
DFT
indicate
more
favorable
to
activate
C–H
C═C
maleic
anhydride,
while
Pt/U6
with
lower
center
temperature
reactant
energy
barriers.
This
study
provides
deep
insight
into
architecture–performance
relation
Pt-based
catalysts
catalytic
VOCs.
Green Chemistry,
Год журнала:
2024,
Номер
26(7), С. 3884 - 3902
Опубликована: Янв. 1, 2024
Ultrafine
Pt
nanoparticles
were
successfully
anchored
on
a
polyimide-based
covalent
triazine
framework
for
the
selective
hydrogenation
of
halogenated
nitrobenzenes
and
tandem
hydrogenation-coupling
reaction
to
secondary
amines.
Carbon Neutralization,
Год журнала:
2024,
Номер
3(3), С. 423 - 440
Опубликована: Май 1, 2024
Abstract
Electrocatalytic
CO
2
reduction
(CO
RR),
an
emerging
sustainable
energy
technology
to
convert
atmospheric
into
value‐added
chemicals,
has
received
extensive
attention.
However,
the
high
thermodynamic
stability
of
and
competitive
hydrogen
evolution
reaction
lead
poor
catalytic
performances,
hardly
meeting
industrial
application
demands.
Due
abundant
reserves
favorable
selectivity,
zinc
(Zn)‐based
catalysts
have
been
considered
one
most
prospective
for
‐to‐CO
conversion.
A
series
advanced
zinc‐based
electrocatalysts,
including
Zn
nanosheets,
single
atoms,
defective
ZnO,
metallic
alloys,
widely
reported
RR.
Despite
significant
progress,
a
comprehensive
fundamental
summary
is
still
lacking.
Herein,
this
review
provides
thorough
discussion
effective
modulation
strategies
such
as
morphology
design,
doping,
defect,
heterointerface,
alloying,
facet,
single‐atom,
emphasizing
how
these
methods
can
influence
electronic
structure
adsorption
properties
intermediates,
well
activity
Zn‐based
materials.
Moreover,
challenges
opportunities
RR
are
also
discussed.
This
expected
promote
broader
efficient
in
electrocatalytic
RR,
thus
contributing
future
energy.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Апрель 1, 2024
Abstract
Electrocatalytic
technology
is
essential
to
develop
environmentally
friendly
energy
technologies
and
reduce
dependence
on
non‐renewable
resources.
The
construction
of
highly
efficient,
inexpensive,
robust
electrocatalysts
the
primary
prerequisite
large‐scale
application
electrochemical
devices.
In
recent
years,
selenium‐based
catalysts
(SBCs)
have
been
extensively
investigated
emerged
as
a
promising
candidate
for
electrocatalysis
given
their
potential
or
replace
dosage
noble
metals
ability
catalyze
range
critical
processes.
This
Review
minutely
analyses
research
advances
in
SBCs,
highlighting
significant
role
Se
enhancing
catalytic
performance.
First,
it
starts
from
concepts
related
followed
by
classification
SBCs
well
strategies
regulate
activity
are
elaborated.
Then,
techniques
characterizing
systematically
summed
up,
mainly
focusing
morphological
structural
characterization
methods.
Next,
applications
various
energy‐conversion
reactions
(e.g.,
hydrogen
evolution
reaction,
oxygen
reduction
nitrogen
CO
2
reaction)
discussed,
aiming
at
elucidating
association
between
structure–activity
correlations.
Finally,
challenges
future
development
trends
presented.
