Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
8(12)
Published: Aug. 22, 2024
Abstract
Hydrogen
is
one
of
the
most
promising
alternative
energy
resources
to
replace
fossil
feedstocks,
with
so‐called
“green”
hydrogen,
derived
by
water
splitting
(WS)
using
renewable
electricity
or
sunlight,
sustainable.
Photocatalytic
hydrogen
production,
in
which
sunlight
sole
input,
has
been
extensively
studied,
and
requires
creation
photogenerated
excitons
(through
irradiation
semiconductors)
their
transport
aqueous
media.
Chemical
scavengers,
notably
electron
donating
molecules,
are
widely
used
quench
holes
thereby
suppress
exciton
recombination
otherwise
limits
yield.
Despite
prevalence,
role
significance
such
scavengers
(also
termed
sacrificial
agents)
photocatalytic
WS
remains
poorly
understood,
hindering
rational
selection.
This
review
focuses
on
importance
donors
WS,
participation
reaction
mechanism.
Inorganic Chemistry,
Journal Year:
2023,
Volume and Issue:
62(23), P. 8803 - 8811
Published: May 30, 2023
The
suitable
choice
of
an
electrocatalyst
is
crucial
in
controlling
the
selectivity
electrocatalytic
CO2
reduction
products.
Herein,
we
have
explored
effect
different
ligand
environments
2D
metal-organic
frameworks
(MOFs),
viz.,
copper
naphthalenedicarboxylate
(Cu-UNDC)
and
benzenedicarboxylate
(Cu-UBDC).
change
modulates
structure
MOFs
as
well
electronic
environment
around
center.
variation
coordination
active
Cu
center
changes
toward
C2
In
process,
Cu-UNDC
produced
24.3%
Faradaic
efficiency
(FE)
for
products─far
better
than
that
Cu-UBDC
(13.2%).
contrast
to
CO2RR,
presence
light,
(26.2%)
achieved
a
FE
products
(21.8%).
The Journal of Physical Chemistry C,
Journal Year:
2024,
Volume and Issue:
128(17), P. 7106 - 7114
Published: April 18, 2024
Carbon
nitrides
are
commonly
employed
as
substrates
to
anchor
single
metal
atoms.
Numerous
theoretical
studies
have
previously
characterized
these
single-atom
systems
using
the
pristine
g-C3N4
structure,
featuring
a
C6N7
motif.
However,
relatively
large
pores
in
may
not
effectively
coordinate
with
cations,
resulting
discordance
coordination
environment
determined
by
experimental
characterization.
In
this
study,
we
introduce
novel
model
denoted
CN-N4,
which
preserves
essential
motif,
while
offering
four
nitrogen
sites
for
binding.
Compared
g-C3N4,
binding
affinity
between
and
new
substrate
is
significantly
enhanced,
similar
that
of
studied
nitrogen-doped
graphene
(N-gra).
Additionally,
assessed
catalytic
performance
various
reactions,
including
hydrogen
evolution
reaction
(HER),
carbon
dioxide
reduction
(CO2RR),
oxygen
(ORR).
The
CN-N4-supported
system
exhibits
activity
comparable
corresponding
N-gra-supported
species.
Fe-
Co-centered
SACs
can
be
promising
catalysts
ORR,
stable
Cu-g-C3N4
active
HER
CO2RR,
consistent
reported
experiments.
addition,
V-CN-N4
Rh-CN-N4
predicted
candidates
catalyze
respectively.
We
suggest
CN-N4
aptly
captures
local
structure
nitride-based
materials
high
number,
providing
an
alternative
foundation
investigating
mechanisms
catalysts.
Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
8(12)
Published: Aug. 22, 2024
Abstract
Hydrogen
is
one
of
the
most
promising
alternative
energy
resources
to
replace
fossil
feedstocks,
with
so‐called
“green”
hydrogen,
derived
by
water
splitting
(WS)
using
renewable
electricity
or
sunlight,
sustainable.
Photocatalytic
hydrogen
production,
in
which
sunlight
sole
input,
has
been
extensively
studied,
and
requires
creation
photogenerated
excitons
(through
irradiation
semiconductors)
their
transport
aqueous
media.
Chemical
scavengers,
notably
electron
donating
molecules,
are
widely
used
quench
holes
thereby
suppress
exciton
recombination
otherwise
limits
yield.
Despite
prevalence,
role
significance
such
scavengers
(also
termed
sacrificial
agents)
photocatalytic
WS
remains
poorly
understood,
hindering
rational
selection.
This
review
focuses
on
importance
donors
WS,
participation
reaction
mechanism.
