Energy Ecology and Environment,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 6, 2024
Abstract
This
work
aims
to
propose
earth-abundant
materials
for
CO
2
photoreduction
generate
renewable
solar
fuels
provide
practical
solutions
global
warming.
The
selected
material
in
this
case
is
cuprous
oxide
(Cu
O),
one
of
the
most
promising
photocatalysts
due
its
high
affinity
radiation
and
electronic
properties.
Cu
O
nanoparticles
(NPs)
were
synthesized
using
Psidium
guajava
residue
photocatalytic
reduction.
aqueous
fruit
proved
be
suitable
stabilizing
acting
as
a
reducing
agent
synthesis
NPs.
XRD
analysis
confirmed
formation
cubic
structure
O.
absorb
light
from
430
nm
with
direct
bandgap
value
around
1.8
eV.
NPs
exhibited
activity
photoreduction,
whose
efficiency
was
optimized
by
an
orthogonal
Taguchi
L
9
design.
factors
studied
catalyst
loading,
air
flow,
temperature.
During
use
HCOOH
identified
main
product,
production
103.4
µmol
h
−
1
under
visible
light.
Also,
it
demonstrated
H
evolution
water
splitting.
Graphical
