Cooperative Copper Single‐Atom Catalyst in 2D Carbon Nitride for Enhanced CO2 Electrolysis to Methane
Advanced Materials,
Год журнала:
2023,
Номер
36(13)
Опубликована: Авг. 12, 2023
Abstract
Renewable‐electricity‐powered
carbon
dioxide
(CO
2
)
reduction
(eCO
R)
to
high‐value
fuels
like
methane
(CH
4
holds
the
potential
close
cycle
at
meaningful
scales.
However,
this
kinetically
staggered
8‐electron
multistep
suffers
from
inadequate
catalytic
efficiency
and
current
density.
Atomic
Cu‐structures
can
boost
eCO
R‐to‐CH
selectivity
due
enhanced
intermediate
binding
energies
(BEs)
resulting
favorably
shifted
d‐band
centers.
In
work,
2D
nitride
(CN)
matrices,
viz.
Na‐polyheptazine
(PHI)
Li‐polytriazine
imides
(PTI),
are
exploited
host
Cu–N
type
single‐atom
sites
with
high
density
(≈1.5
at%),
via
a
facile
metal‐ion
exchange
process.
Optimized
Cu
loading
in
nanocrystalline
Cu‐PTI
maximizes
performance
Faradaic
(FE
CH4
of
≈68%
partial
348
mA
cm
−2
−0.84
V
vs
reversible
hydrogen
electrode
(RHE),
surpassing
state‐of‐the‐art
catalysts.
Multi‐Cu
substituted
N‐appended
nanopores
CN
frameworks
yield
thermodynamically
stable
quasi‐dual/triple
large
interatomic
distances
dictated
by
pore
dimensions.
First‐principles
calculations
elucidate
relative
Cu–CN
cooperative
effects
between
matrices
how
local
environment
dictates
adsorbate
BEs,
states,
CO
‐to‐CH
energy
profile
landscape.
The
9N
pores
Cu–Cu
that
synergistically
enhance
kinetics
rate‐limiting
steps
pathway.
Язык: Английский
Atomically dispersed dual-atom catalysts: A new rising star in environmental remediation
The Science of The Total Environment,
Год журнала:
2023,
Номер
912, С. 169142 - 169142
Опубликована: Дек. 8, 2023
Язык: Английский
Iron–iodine co-catalysis towards tandem C–N/C–C bond formation: one-pot regioselective synthesis of 2-amino-3-alkylindoles
Organic Chemistry Frontiers,
Год журнала:
2022,
Номер
9(22), С. 6165 - 6171
Опубликована: Янв. 1, 2022
An
efficient
intermolecular
C2,3-H
aminoalkylation
of
indoles
with
9
H
-xanthenes
and
azoles
via
iron–iodine
co-catalyzed
tandem
C–N/C–C
bond
formation
has
been
developed.
Язык: Английский
Synthesis of 2,3‐Diaminoindolesvia a Copper‐Iodine Co‐catalytic Strategy
Chinese Journal of Chemistry,
Год журнала:
2023,
Номер
41(24), С. 3567 - 3572
Опубликована: Авг. 28, 2023
Comprehensive
Summary
A
one‐pot
synthesis
of
vicinal
diamines
using
indoles,
azoles
and
phenothiazines
in
a
tandem
multi‐component
reaction
is
developed.
The
utilization
copper‐iodine
co‐catalytic
system
enables
the
generation
diverse
range
diaminoindoles
with
good
selectivity
moderate
to
yields.
An
attractive
aspect
this
method
that
it
can
be
conducted
under
mild
environmentally
friendly
conditions,
showcasing
its
potential
as
an
alternative
approach
for
synthesizing
diamines.
Moreover,
use
multicomponent
highlights
power
versatility
such
strategies
synthetic
chemistry.
Язык: Английский
Iodine-Mediated C2,3–H Aminoheteroarylation of Indoles
The Journal of Organic Chemistry,
Год журнала:
2023,
Номер
88(21), С. 15106 - 15117
Опубликована: Окт. 21, 2023
A
metal-free
one-pot
oxidative
cross-dehydrogenation
coupling
reaction
for
the
formation
of
C-N/C-C
bonds
at
C2,3-positions
indoles
with
azoles
and
quinoxalinones
has
been
developed.
The
proposed
method
several
notable
features,
including
catalysis,
use
N-H
free
as
substrates,
ease
operation,
mild
conditions,
compatibility
a
wide
range
substrates.
Язык: Английский
Modular Synthesis of Triarylamines and Poly(triarylamine)s through a Radical Mechanism
European Journal of Organic Chemistry,
Год журнала:
2023,
Номер
26(13)
Опубликована: Фев. 16, 2023
Abstract
A
modular
protocol
for
the
triarylamine
synthesis
has
been
developed
using
diarylamines
and
electron‐rich
arenes,
such
as
phenols,
building
blocks.
The
KI/KIO
4
system
proves
to
be
highly
efficient
cross‐dehydrogenative
coupling
of
phenothiazines/phenoxazines
with
phenols/anilines.
wide
range
functional
groups
attached
both
partners
were
well
tolerated.
Through
manipulation
reaction
temperatures,
sequential
assembly
bis‐triarylamines
could
achieved
provide
unsymmetrically
bis‐aminated
phenols
efficiently.
Furthermore,
multiple
aminated
polyphenols
rapidly
constructed
in
good
high
yields
by
a
single
operation.
Язык: Английский
Copper‐mediated Intermolecular C−H aminohalogenation of Indoles at Room Temperature
Asian Journal of Organic Chemistry,
Год журнала:
2022,
Номер
11(10)
Опубликована: Авг. 25, 2022
Abstract
An
efficient
intermolecular
C−H
aminohalogenation
of
indoles
with
azoles
and
NXS
(X
=
F,
Cl,
Br,
I)
has
been
developed.
This
mild
protocol
provides
a
straightforward
entry
to
structurally
valuable
2‐azolyl‐3‐halogenated
in
one
single
operation.
In
addition,
this
attractive
route
for
the
synthesis
polyfunctionalized
is
great
significance
due
product's
versatile
reactivity
further
transformations.
Язык: Английский
Synthesis of C2,3-vicinal diaminoindoles via a copper-iodine co-catalytic strategy
Authorea (Authorea),
Год журнала:
2023,
Номер
unknown
Опубликована: Авг. 16, 2023
A
one-pot
synthesis
of
vicinal
diamines
using
indoles,
pyrazoles,
and
phenothiazines
in
a
tandem
multi-component
reaction
is
developed.
The
utilization
copper-iodine
co-catalytic
system
enables
the
generation
diverse
range
diaminoindoles
with
good
selectivity
moderate
to
yields.
An
attractive
aspect
this
method
that
it
can
be
conducted
under
mild
environmentally
friendly
conditions,
showcasing
its
potential
as
an
alternative
approach
for
synthesizing
diamines.
Moreover,
use
multicomponent
highlights
power
versatility
such
strategies
synthetic
chemistry.
Язык: Английский