Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: July 11, 2024
Abstract
Long-term
societal
prosperity
depends
on
addressing
the
world’s
energy
and
environmental
problems,
photocatalysis
has
emerged
as
a
viable
remedy.
Improving
efficiency
of
photocatalytic
processes
is
fundamentally
achieved
by
optimizing
effective
utilization
solar
enhancing
efficient
separation
photogenerated
charges.
It
been
demonstrated
that
fabrication
III–V
semiconductor-based
photocatalysts
in
increasing
light
absorption,
long-term
stability,
large-scale
production
promoting
charge
transfer.
This
focused
review
explores
current
developments
semiconductor
materials
for
solar-powered
systems.
The
various
subjects,
including
advancement
semiconductors,
mechanisms,
their
uses
H
2
conversion,
CO
reduction,
remediation,
oxidation
reduction
reactions.
In
order
to
design
heterostructures,
delves
into
basic
concepts
absorption
separation.
also
highlights
significant
advancements
green
systems
water
splitting,
emphasizing
significance
establishing
eco-friendly
hydrogen
production.
main
purpose
produce
through
sustainable
ecologically
friendly
conversion.
intends
foster
development
greener
more
source
encouraging
researchers
developers
focus
practical
applications
photocatalysis.
Hydrothermally
produced
Cu-doped
two-dimensional
(2D)
Bi2MoO6
nanoribbon/rGO
composite
is
explored
as
the
photocatalyst
for
selective
reduction
of
CO2
to
ethanol.
In
particular,
role
Cu
doping
rGO-supported
on
C2
product
selectivity
investigated.
Long
nanoribbon-type
pristine
2D-Bi2MoO6,
2D-Bi2MoO6
nanoribbon/rGO,
and
that
doped
with
varying
weight
percentages
copper
(Cu)
are
synthesized
characterized
by
XRD,
FTIR,
UV–vis
spectroscopy,
photoluminescence
X-ray
photoelectron
SEM,
TEM,
EDX,
EIS,
BET
analyses.
Among
all
photocatalysts,
optimum
2
wt
%
exhibiting
an
enhanced
absorption
edge
visible
light
at
730
nm,
smallest
band
gap
2.02
eV,
lowest
rate
electron–hole
pair
recombination,
improved
charge
transport
offers
highest
photocatalytic
activity
(133.10
μmol
gcat.–1
h–1)
100%
ethanol
production.
Absence
either
or
rGO
leads
formation
a
mixture
methanol
separates
photoexcited
electrons
holes
establishes
electron-rich
interface
rGO-Cu
junction
2%Cu-doped
photocatalyst,
facilitating
high
adsorption.
serves
trap
catch
more
electrons.
Electrons
from
Mo
Bi
atoms
(of
Bi2MoO6)
drawn
C
2p
rGO)
3d
orbitals.
enhances
thickened
electron
cloud
(drawn
Bi)
surface
C(rGO)-Cu,
which
facilitates
adsorption
reduction.
The
Mo–C–Cu/Mo–O–Cu
bridge
formed
upon
effectively
reduces
distance
photogenerated
recombination
stabilize
intermediate
radicals
such
·CO
transfer
abundant
tapping
sites
formation.
2%
in
yield
production
2.26
times
compared
nanoribbon/rGO.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: July 13, 2024
Abstract
Solar-driven
CO
2
reduction
to
yield
high-value
chemicals
presents
an
appealing
avenue
for
combating
climate
change,
yet
achieving
selective
production
of
specific
products
remains
a
significant
challenge.
We
showcase
two
osmium
complexes,
przpOs,
and
trzpOs,
as
catalysts
-to-methane
conversion.
Kinetically,
the
przpOs
trzpOs
exhibit
high
catalytic
rate
constants
0.544
6.41
s
−1
,
respectively.
Under
AM1.5
G
irradiation,
optimal
Si/TiO
/trzpOs
have
CH
4
main
product
>90%
Faradaic
efficiency,
reaching
−14.11
mA
cm
−2
photocurrent
density
at
0.0
V
RHE
.
Density
functional
theory
calculations
reveal
that
N
atoms
on
bipyrazole
triazole
ligands
effectively
stabilize
-adduct
intermediates,
which
tend
be
further
hydrogenated
produce
leading
their
ultrahigh
-to-CH
selectivity.
These
results
are
comparable
cutting-edge
Si-based
photocathodes
reduction,
revealing
vast
research
potential
in
employing
molecular
photoelectrochemical
conversion
methane.
