Perovskite–Molecular Photocatalyst Synergy and Surface Engineering for Superior Photocatalytic Performance
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 15, 2025
Metal
halide
perovskite
nanocrystals
(NCs),
known
for
their
strong
visible-light
absorption
and
tunable
optoelectronic
properties,
show
significant
promise
photocatalytic
applications.
However,
efficiency
is
often
hindered
by
rapid
charge
recombination
insufficient
exciton
dissociation,
limiting
effective
catalysis.
Excited-state
interactions
at
the
NC
interface
are
critical
in
determining
performance,
underscoring
need
strategies
that
enhance
separation
minimize
recombination.
To
address
these
challenges,
we
developed
a
composite
material
combining
cesium
lead
bromide
(CsPbBr3)
with
ferrocene
carboxylic
acid
(FcA),
hole-extracting
moiety.
This
integration
enhances
dissociation
through
energy
level
alignment
suppression,
resulting
3-fold
increase
oxidation
yield
of
benzylamine
to
N-benzylidenebenzylamine
(35
±
5%
versus
12
2%
pristine
CsPbBr3).
Additionally,
thionyl
(SOBr2)
surface
modification
strips
off
ligands
introduces
ions
onto
CsPbBr3
NCs,
further
improving
transfer
substrate
accessibility,
27
within
3
h.
While
SOBr2
treatment
initial
catalytic
its
acidic
nature
may
reversible
reactions
side
products
over
extended
reaction
times.
study
highlights
impact
molecular
engineering
on
optimizing
interfacial
dynamics,
providing
pathway
toward
robust,
high-efficiency
photocatalysts
sustainable
chemical
transformations.
Язык: Английский
Dual-Locking Strategy with Charge-Delocalizing Ligand for Stable Perovskites
Chemical Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
We
developed
a
multifunctional
phenyl
bis(dithiocarbamate)
(PBTC)
ligand
that
enhances
perovskite
nanocrystal
stability
under
UV
exposure
and
in
polar
solvents
through
strong
lead
chelation
intrinsic
absorption.
Its
hole-delocalizing
properties
suppress
phase
segregation,
making
it
promising
candidate
for
photovoltaics
light-emitting
diodes.
Язык: Английский
Lead-free Cs3Bi2Br9 perovskite: A recoverable heterogeneous photocatalyst for the C3 arylation of quinoxalin-2(1H)-ones
Molecular Catalysis,
Год журнала:
2024,
Номер
568, С. 114514 - 114514
Опубликована: Авг. 31, 2024
Язык: Английский
Enhancing the Photocatalytic Performance of CsPbBr3 Nanocrystals through Ferrocene-Assisted Exciton Dissociation and Halide Vacancies
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Excited-state
interactions
at
the
interfaces
of
nanocrystals
play
a
crucial
role
in
determining
photocatalytic
efficiency.
CsPbBr
Язык: Английский