Proceedings of the National Academy of Sciences,
Journal Year:
2023,
Volume and Issue:
120(29)
Published: July 10, 2023
Single-atom
catalysts
(SACs)
are
a
promising
area
in
environmental
catalysis.
We
report
on
bimetallic
Co–Mo
SAC
that
shows
excellent
performance
activating
peroxymonosulfate
(PMS)
for
sustainable
degradation
of
organic
pollutants
with
high
ionization
potential
(IP
>
8.5
eV).
Density
Functional
Theory
(DFT)
calculations
and
experimental
tests
demonstrate
the
Mo
sites
–
Co
SACs
play
critical
role
conducting
electrons
from
to
sites,
leading
19.4-fold
increase
rate
phenol
compared
CoCl
2
PMS
group.
The
exhibit
catalytic
even
under
extreme
conditions
show
long-term
activation
10-d
experiments,
efficiently
degrading
600
mg/L
phenol.
Moreover,
catalyst
has
negligible
toxicity
toward
MDA-MB-231,
Hela,
MCF-7
cells,
making
it
an
environmentally
friendly
option
water
treatment.
Our
findings
have
important
implications
design
efficient
remediation
other
applications
biology
medicine.
Environmental Science & Technology,
Journal Year:
2023,
Volume and Issue:
57(7), P. 2907 - 2917
Published: Feb. 7, 2023
The
heterogeneous
electro-Fenton
(hetero-e-Fenton)-coupled
electrocatalytic
oxygen
reduction
reaction
(ORR)
is
regarded
as
a
promising
strategy
for
·OH
production
by
simultaneously
driving
two-electron
ORR
toward
H2O2
and
stepped
activating
the
as-generated
to
·OH.
However,
high-efficiency
electrogeneration
of
remains
challengeable,
it
difficult
synchronously
obtain
efficient
catalysis
both
steps
above
on
one
catalytic
site.
In
this
work,
we
propose
dual-atomic-site
catalyst
(CoFe
DAC)
cooperatively
catalyze
electrogeneration,
where
atomically
dispersed
Co
sites
are
assigned
enhance
O2
intermediates
Fe
responsible
activation
CoFe
DAC
delivers
higher
rate
2.4
mmol
L-1
min-1
gcat-1
than
single-site
Co-NC
(0.8
gcat-1)
Fe-NC
(1.0
gcat-1).
Significantly,
hetero-e-Fenton
process
demonstrated
be
more
energy-efficient
actual
coking
wastewater
treatment
with
an
energy
consumption
19.0
kWh
kg-1
COD-1
other
electrochemical
technologies
that
reported
values
29.7∼68.0
kW
h
COD-1.
This
study
shows
attractive
advantages
efficiency
sustainability
which
should
have
fresh
inspiration
development
new-generation
technology.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(22)
Published: March 9, 2023
Efficient
molecular
oxygen
activation
(MOA)
is
the
key
to
environmentally
friendly
catalytic
oxidation
reactions.
In
last
decade,
single-atomic-site
catalysts
(SASCs)
with
nearly
100
%
atomic
utilization
and
unique
electronic
structure
have
been
widely
investigated
for
MOA.
However,
single
active
site
makes
effect
unsatisfactory
difficult
deal
complex
Recently,
dual-atomic-site
(DASCs)
provided
a
new
idea
effective
of
(O2
)
due
more
diverse
sites
synergetic
interactions
among
adjacent
atoms.
this
review,
we
systematically
summarized
recent
research
progress
DASCs
MOA
in
heterogeneous
thermo-
electrocatalysis.
Finally,
look
forward
challenges
application
prospects
construction
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(4), P. 2134 - 2143
Published: Jan. 25, 2024
The
waste
of
carbon
sources
and
greenhouse
gas
production
during
wastewater
treatment
have
become
extremely
important
environmental
issues.
Herein,
the
BiOBr/BiVO4
compounds
with
defect-induced
frustrated
Lewis
acid–base
pairs
(DFLPs)
internal
charge
transfer
were
fabricated
to
convert
organic
pollutants
into
CO
nearly
100%
selectivity.
oxygen
vacancy
(Ov)
induced
built-in
electric
field
in
create
directional
from
BiOBr
BiVO4.
Density
functional
theory
(DFT)
calculations
prove
that
Ov
combines
its
adjacent
hydroxyls
form
DFLP
active
sites
can
additionally
capture
activate
CO2.
Meanwhile,
reduce
formation-free
energy
COOH*
intermediates,
which
is
key
rate-limiting
step
CO2
high
This
system
has
achieved
selective
conversion
value-added
chemicals
pollutant
degradation
provides
a
theoretical
basis
for
actual
recycling
sources.
Catalyzed
reduction
processes
have
been
recognized
as
important
and
supplementary
technologies
for
water
treatment,
with
the
specific
aims
of
resource
recovery,
enhancement
bio/chemical-treatability
persistent
organic
pollutants,
safe
handling
oxygenate
ions.
Palladium
(Pd)
has
widely
used
a
catalyst/electrocatalyst
in
these
processes.
However,
due
to
limited
reserves
high
cost
Pd,
it
is
essential
gain
better
understanding
Pd-catalyzed
decontamination
process
design
affordable
sustainable
Pd
catalysts.
This
review
provides
systematic
summary
recent
advances
reductive
designing
Pd-based
nanocatalysts
treatment
water-borne
special
focus
on
interactions
transformation
mechanisms
pollutant
molecules
catalysts
at
atomic
scale.
The
discussion
begins
by
examining
adsorption
pollutants
onto
sites
from
thermodynamic
viewpoint.
followed
an
explanation
molecular-level
reaction
mechanism,
demonstrating
how
electron-donors
participate
pollutants.
Next,
influence
reactive
site
structure
catalytic
performance
explored.
Additionally,
facilitating
oxidation
briefly
discussed.
longevity
catalysts,
crucial
factor
determining
their
practicality,
also
examined.
Finally,
we
argue
increased
attention
mechanism
study,
well
precise
construction
under
batch
synthesis
conditions,
use
catalysts/electrocatalysts
concentrated
facilitate
recovery.
