Abstract
Graphitic
carbon
nitride
semiconductors
are
inexpensive
and
reusable
photocatalysts,
which
actively
studied
in
organic
synthesis.
Successful
design
of
photocatalytic
reactions
is
based
on
the
next
considerations.
i)
Thermodynamic
feasibility
photoinduced
processes,
involve
transfer
electrons
or
electron‐proton
couples.
ii)
Redox
activity
reagents.
iii)
Reactivity
open‐shell
intermediates
generated
from
Herein,
we
summarize
current
understanding
how
local
chemical
structure
graphitic
nitrides
their
redox
potentials
used
to
reactions.
This
work
intends
serve
as
a
guideline
for
materials
scientists,
who
willing
apply
involving
substrates,
chemists,
interested
dive
into
heterogeneous
photocatalysis.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(16)
Опубликована: Янв. 4, 2024
Abstract
As
a
powerful
tool,
nanozyme
catalysts
broaden
the
avenues
to
implement
bio‐inspired
solutions
for
addressing
many
important
concerns,
covering
energy,
healthcare,
environment,
and
more.
Recent
endeavors,
characterized
by
atomic
precision,
have
enabled
extensive
exploration
of
single‐atom
nanozymes
(SAzymes)
with
high
catalytic
activity,
superior
substrate
selectivity,
integrated
multifunctionalities,
thus
becoming
an
emerging
field
that
bridges
nanotechnology
biology.
This
review
provides
brief
outline
progress
summarizes
latest
research
advances
regarding
SAzymes
in
biomedical
therapeutics,
mainly
including
tumor
therapy,
wound
antibacterial
tissue
anti‐inflammatory
focus
on
their
prototypical
synthesis
therapeutic
mechanisms.
Finally,
current
challenges
future
perspectives
engineering
advanced
are
also
discussed
outlooked.
It
is
anticipated
this
area
shall
provide
useful
guidance
therapy.
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(3)
Опубликована: Дек. 7, 2023
The
oxygen
evolution
reaction
(OER),
characterized
by
a
four-electron
transfer
kinetic
process,
represents
significant
bottleneck
in
improving
the
efficiency
of
hydrogen
production
from
water
electrolysis.
Consequently,
extensive
research
efforts
have
been
directed
towards
identifying
single-atom
electrocatalysts
with
exceptional
OER
performance.
Despite
comprehensive
understanding
mechanism,
its
application
to
other
valuable
synthetic
reactions
has
limited.
Herein,
we
leverage
MOOH
intermediate,
key
species
Mn-N-C
catalyst
(Mn-SA@NC),
which
can
be
cyclically
delivered
OER.
We
exploit
this
intermediate'
s
capability
facilitate
electrophilic
silane,
enabling
efficient
silane
oxidation
under
electrochemical
conditions.
SAC
electrocatalytic
system
exhibits
remarkable
performance
loadings
as
low
600
ppm
and
an
turnover
number
9132.
Furthermore,
catalytic
method
demonstrates
stability
10
mmol
flow
chemistry
setup.
By
serving
electrocatalyst,
Mn-SA@NC
drives
entire
reaction,
establishing
practical
Mn
SAC-catalyzed
organic
electrosynthesis
system.
This
synthesis
approach
not
only
presents
promising
avenue
for
utilization
but
also
highlights
potential
SACs
attractive
platform
investigations.
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(10), С. 3437 - 3449
Опубликована: Янв. 1, 2024
g-C
3
N
4
nanosheets
are
modified
with
Pt
single
atoms
at
1.5
at%
through
a
low-temperature
incipient
wetness
impregnation
method
followed
by
high-temperature
pyrolysis,
increasing
the
photocatalytic
H
2
production
rate
two
orders
of
magnitude.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(22), С. 15640 - 15647
Опубликована: Май 21, 2024
Single-atom
catalysts
(SACs)
have
been
widely
investigated
and
emerged
as
a
transformative
approach
in
electrocatalysis.
Despite
their
clear
structure,
the
origin
of
exceptional
activity
remains
elusive.
Herein,
we
elucidate
common
phenomenon
hybridization
state
transition
metal
centers,
which
is
responsible
for
across
various
SACs
different
reactions.
Focusing
on
N-doped
carbon-supported
Ni
SAC
(NiN4
SAC)
CO2
reduction
reaction
(CO2RR),
our
comprehensive
computations
successfully
clarify
under
working
conditions
its
relation
with
activity.
This
transition,
triggered
by
intermediates
applied
potential,
converts
center
from
inert
dsp2
to
active
d2sp3
state.
Importantly,
calculated
selectivity
CO2RR
over
d2sp3-hybridized
are
consistent
experimental
results,
offering
strong
support
proposed
hypothesis.
work
suggests
universal
principle
electronic
structure
evolution
that
could
revolutionize
catalyst
design,
also
introduces
new
paradigm
manipulating
states
enhance
catalytic
performance,
implications
reactions
platforms.
Bioactive Materials,
Год журнала:
2024,
Номер
36, С. 1 - 13
Опубликована: Фев. 21, 2024
Osteoarthritis
(OA)
progresses
due
to
the
excessive
generation
of
reactive
oxygen
and
nitrogen
species
(ROS/RNS)
abnormal
ATP
energy
metabolism
related
oxidative
phosphorylation
pathway
in
mitochondria.
Highly
active
single-atom
nanozymes
(SAzymes)
can
help
regulate
redox
balance
have
shown
their
potential
treatment
inflammatory
diseases.
In
this
study,
we
innovatively
utilised
ligand-mediated
strategies
chelate
Pt
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(27)
Опубликована: Апрель 23, 2024
Homogeneous
electrocatalysts
can
indirect
oxidate
the
high
overpotential
substrates
through
single-electron
transfer
on
electrode
surface,
enabling
efficient
operation
of
organic
electrosynthesis
catalytic
cycles.
However,
problems
this
chemistry
still
exist
such
as
dosage,
difficult
recovery,
and
low
efficiency.
Single-atom
catalysts
(SACs)
exhibit
atom
utilization
excellent
activity,
hold
great
promise
in
addressing
limitations
homogeneous
catalysts.
In
view
this,
we
have
employed
Fe-SA@NC
an
advanced
redox
mediator
to
try
change
situation.
was
synthesized
using
encapsulation-pyrolysis
method,
it
demonstrated
remarkable
performance
a
range
reported
reactions,
construction
various
C-C/C-X
bonds.
Moreover,
potential
exploring
new
synthetic
method
for
electrosynthesis.
We
develop
electro-oxidative
ring-opening
transformation
cyclopropyl
amides.
reaction
system,
showed
good
tolerance
drug
molecules
with
complex
structures,
well
flow
electrochemical
syntheses
gram-scale
transformations.
This
work
highlights
SACs
electrosynthesis,
thereby
opening
avenue
chemistry.
Abstract
Modifying
the
coordination
or
local
environments
of
single‐,
di‐,
tri‐,
and
multi‐metal
atom
(SMA/DMA/TMA/MMA)‐based
materials
is
one
best
strategies
for
increasing
catalytic
activities,
selectivity,
long‐term
durability
these
materials.
Advanced
sheet
supported
by
metal
atom‐based
have
become
a
critical
topic
in
fields
renewable
energy
conversion
systems,
storage
devices,
sensors,
biomedicine
owing
to
maximum
utilization
efficiency,
precisely
located
centers,
specific
electron
configurations,
unique
reactivity,
precise
chemical
tunability.
Several
offer
excellent
support
are
attractive
applications
energy,
medical
research,
such
as
oxygen
reduction,
production,
hydrogen
generation,
fuel
selective
detection,
enzymatic
reactions.
The
strong
metal–metal
metal–carbon
with
metal–heteroatom
(i.e.,
N,
S,
P,
B,
O)
bonds
stabilize
optimize
electronic
structures
atoms
due
interfacial
interactions,
yielding
activities.
These
provide
models
understanding
fundamental
problems
multistep
This
review
summarizes
substrate
structure‐activity
relationship
different
active
sites
based
on
experimental
theoretical
data.
Additionally,
new
synthesis
procedures,
physicochemical
characterizations,
biomedical
discussed.
Finally,
remaining
challenges
developing
efficient
SMA/DMA/TMA/MMA‐based
presented.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(39)
Опубликована: Июль 22, 2024
Abstract
Graphitic
carbon
nitride
(g‐C
3
N
4
)
assisted
photocatalytic
production
of
hydrogen
peroxide
(H
2
O
has
already
attracted
the
interest
many
researchers
due
to
its
environmental
sustainability.
Nevertheless,
inherent
drawbacks
g‐C
limit
progress.
Metal‐free
modification
strategies,
including
nanostructure
design,
defect
introduction,
doping,
and
heterojunction
construction,
have
been
developed
improve
efficiency
H
production.
Compared
metal
modification,
metal‐free
strategies
avoid
use
precious
metals
leaching
heavy
ions,
which
advantages
good
stability
friendliness.
However,
a
comprehensive
review
from
modified
by
is
still
lacking.
This
first
recaps
mechanism
,
photoexcitation,
carrier
separation
redox
reactions.
Then,
perspective
advances
in
photocatalysts
are
presented,
with
special
focus
on
kernel
connection
between
different
based
pivotal
stages
Subsequently,
recent
applications
‐based
for
situ
generated
mainly
water
purification
organic
synthesis,
briefly
discussed.
Finally,
prospects
envisioned
hope
that
it
will
“something
do”
field
