ChemCatChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 8, 2024
Abstract
The
photocatalytic
conversion
of
biomass‐derived
compounds
into
value‐added
chemicals
presents
a
promising
protocol
for
the
sustainable
production
renewable
chemicals.
Our
study
explores
hydrogenation
biomass
model
under
visible
light
illumination.
Zr
was
incorporated
CeO
2
framework,
forming
CeZrOx(1:0.5)
solid
solution,
confirmed
by
powder
X‐ray
diffraction
(PXRD)
and
photoelectron
spectroscopy
(XPS)
analyses.
uptake
capacity
CeZrOx
solution
characterized
using
UV–visible
spectroscopy.
Additionally,
band
structure
assessed
valance
(VB‐XPS)
Ultraviolet
(UPS)
analysis,
revealing
Z‐Scheme,
which
further
various
control
experiments.
Upon
decorating
with
1
wt%
palladium
(Pd),
resulting
1Pd/CeZrOx(1:0.5)
composite
exhibited
improved
charge
separation
enhanced
absorption
capacity.
This
achieved
∼99%
furfural
to
tetrahydrofurfuryl
alcohol
15
W
blue
LED
illumination
0.2
MPa
hydrogen.
Similarly,
it
demonstrated
benzyl
phenyl
ether
(BPE)
toluene
phenol
10
findings
elucidate
active
sites
demonstrate
recyclability
mixed
metal
oxides
selective
BPE
hydrogenolysis
light.
Green Chemistry,
Journal Year:
2024,
Volume and Issue:
26(12), P. 7384 - 7405
Published: Jan. 1, 2024
Z-Scheme
photocatalysts
for
sustainable
hydrogenolysis
of
β-O-4,
α-O-4,
and
4-O-5
linkages
lignin-derived
ether
in
the
selective
production
aromatics
or
aliphatic
hydrocarbons.
ACS Applied Nano Materials,
Journal Year:
2023,
Volume and Issue:
7(1), P. 1462 - 1476
Published: Dec. 29, 2023
In
this
study,
a
Z-scheme
heterojunction
photocatalyst
is
fabricated
by
systematically
manipulating
and
integrating
g-C3N4
ZnO.
The
g-C3N4(x)/ZnO(y)
exhibits
enhanced
charge
separation
migration,
confirmed
through
photoluminescence
(PL),
time-correlated
single-photon
counting
spectroscopy,
electrochemical
impedance
spectroscopy.
Pd
NPs,
with
an
elevated
work
function
low
Fermi
energy
level,
are
decorated
onto
the
heterojunction,
further
amplifying
separation,
as
revealed
ultraviolet
photoelectron
resulting
Pd-decorated
photocatalysts
(Z%Pd@g-C3N4(x)/ZnO(y))
evaluated
for
selective
reduction
of
α–β
unsaturated
compound,
cinnamaldehyde.
catalysts
lower
NPs
(0.5
or
1%)
afford
∼100%
yield
hydrocinnamaldehyde,
while
higher
(3%Pd@g-C3N4(0.73)/ZnO(0.27))
hydrocinnamyl
alcohol.
Biomass-derived
furanic
aldehydes
afforded
ring-reduced
side-chain-reduced
products
under
different
loading,
whereas
no
were
obtained
aromatic
aldehydes.
Interface
interactions
impact
leading
to
longer
lifetimes
photogenerated
pairs
improved
electrons
holes
in
photocatalytic
processes.
Characterizations
control
experiments
provide
valuable
insights
into
structure–activity
relationship,
ultimately
contributing
formulating
plausible
reaction
mechanism
reduction.
γ-Valerolactone
(GVL)
and
cyclopentanol
(CPL)
are
valuable
biomass-derived
chemicals
with
applications
as
green
solvents,
renewable
fuels,
intermediates
in
polymers
pharmaceuticals.
However,
their
conventional
synthesis
requires
high
energy
expensive
catalysts.
Here,
we
report
a
Ru-decorated
g-C3N4
(CN)
phytic
acid-derived
carbon
(CP)
composite
(Ru@CP1/CN1)
an
efficient
photocatalyst
for
the
selective
transformation
of
levulinic
acid
(LA)
to
GVL
furfural
(FUR)
CPL
under
mild
conditions
simultaneous
water
splitting.
The
Ru@CP1/CN1
catalyst
achieves
∼99%
selectivity
6
h
86%
9
nearly
complete
conversion.
superior
performance
is
attributed
enhanced
charge
separation,
facilitated
by
CP
support,
enabling
electron
transfer
from
CN
Ru
active
sites.
In
situ
X-ray
photoelectron
spectroscopy
(XPS)
ultraviolet
(UPS)
confirm
mechanism,
while
control
experiments,
deuterium
labeling,
IR
spectroscopy,
EPR
analysis
provide
mechanistic
insights.
demonstrates
excellent
stability,
maintaining
activity
over
five
consecutive
cycles.
This
work
establishes
promising
sustainable
biomass
valorization,
offering
energy-efficient
pathway
chemical
production
fuel
additives.
Sustainable Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
8(15), P. 3205 - 3246
Published: Jan. 1, 2024
The
valorization
of
lignocellulosic
biomass
through
reductive
photocatalysis
is
emerging
as
a
sustainable
route
for
obtaining
valuable
chemical
and
fuel
additives.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(22), P. 10423 - 10433
Published: May 18, 2024
Transition-metal-doped
black
titania,
primarily
in
the
anatase
phase,
shows
promise
for
redox
reactions,
water
splitting,
hydrogen
generation,
and
organic
pollutant
removal,
but
exploring
other
titania
phases
broader
catalytic
applications
is
underexplored.
This
study
introduces
a
synthetic
approach
using
Co–Ti
bimetallic
complex
bridged
by
1,10-phenanthroline-5,6-dione
ligand
as
precursor
synthesis
of
cobalt-doped
[Co@L2N@b-TiO2].
The
involves
precise
control
pyrolysis
conditions,
yielding
distinct
structure
dominated
rutile
phase
over
anatase,
with
active
cobalt
encapsulated
within
nitrogen-doped
graphitic
layer,
Co0
rather
than
CoII
CoIII.
synthesized
material
employed
selective
hydrogenation
cinnamaldehyde
(CAL)
to
cinnamyl
alcohol
(COL)
under
industrially
viable
conditions.
efficiency
selectivity
Co@L2N@b-TiO2
was
compared
catalysts,
including
TiO2
(Co@r-TiO2),
(Co@a-TiO2),
(Co@b-TiO2)
well
materials
pyrolyzed
different
atmospheres
temperatures,
phenanthroline
ligands,
lacking
any
ligands.
superior
performance
attributed
its
high
surface
area,
stable
composition
Ti2O3
(referred
RAT),
along
synergistic
interaction
between
RAT
Co0.
These
factors
significantly
influence
COL
hydrocinnamaldehyde
(HCAL)
hydrocinnamyl
(HCOL),
indicating
potential
beyond
catalysis,
particularly
designing
titania-based
materials.
