Zeitschrift für Physikalische Chemie,
Journal Year:
2023,
Volume and Issue:
238(3), P. 487 - 508
Published: Dec. 19, 2023
Abstract
The
present
research
is
characterized
by
ecofriendly,
low
cost
and
robust
methods
to
synthesize
calcium
hydroxide
(CH)
nanoparticles
using
clove
oil
as
capping
reducing
agent
nonionic
block
copolymers
surface
modifiers
particle
size
reducers.
prepared
were
UV–visible
spectroscopy,
dynamic
laser
light
scattering,
X-ray
diffraction,
Fourier
transform
infra-red
energy
dispersive
spectroscopy
transmission
electron
microscopy.
average
effective
diameter
crystallite
of
calculated
from
DLS
XRD
97–178
22–36
nm
respectively.
synthesized
NPs
showed
excellent
catalytic
activities
against
Allura
red
Fast
green
dye.
They
also
improved
anti-bacterial
antifungal
Staphylococcus
aureus
,
Klebsiella
pneumonia
Candida
albicans
with
minimum
inhibitory
concentration
50
μl
ml
−1
.
nanocrystals
incorporated
into
gum
Arabic
be
used
consolidant
for
archaeological
bone
fragments
fill
the
cracks,
reinforce
their
mechanical
features
save
them
further
decay.
SEM
images
all
before
after
treatment
clearly
specify
effectiveness
this
treatment.
Developing
highly
efficient
single-atom
catalysts
(SACs)
for
electrocatalytic
carbon
dioxide
reduction
reaction
(CO2RR)
is
a
promising
approach
to
promoting
neutrality.
However,
challenges
such
as
low
activity,
selectivity,
and
high
costs
hinder
industrial
scaling,
attributed
the
lack
of
innate
activity
or
insufficient
transition
metal
(TM)
active
site
density
in
current
catalysts.
Therefore,
focus
CO2RR
research
remains
on
developing
SACs
with
intrinsic
catalytic
TM
coverage,
cost-effectiveness.
This
study
presents
design
coverage
material
M2C12
(M
=
Mo,
Ru,
Rh,
W,
Re,
Os,
Ir)
electrocatalyst
using
functional
theory
calculations.
Among
these
materials,
W2C12
demonstrates
superior
selectivity
CO
products
overpotentials
0.45
V
W
up
71.84
weight
percent
(wt%).
To
further
enhance
its
non-metallic
coordination
modification
(NM
B,
N,
O,
P
doping,
C
vacancy)
was
explored
W2C12.
The
results
indicate
that
N-doped
(N-W2C12)
can
significantly
improve
achieving
an
extremely
overpotential
0.34
V.
offers
valuable
insights
into
designing
stability
other
reactions.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
Abstract
Developing
advanced
and
economically
viable
technologies
for
the
capture
utilization
of
carbon
dioxide
(CO
2
)
is
crucial
sustainable
energy
production
from
fossil
fuels.
Converting
CO
into
valuable
chemicals
fuels
a
promising
approach
to
mitigate
atmospheric
levels.
Among
various
methods,
photocatalytic
reduction
stands
out
its
potential
reduce
emissions
produce
useful
products.
Here,
novel
perovskite
ZnMoFeO
3
(ZMFO)
nanosheets
are
presented
as
semiconductor
photocatalysts
reduction.
Experimental
results
show
that
ZMFO
has
narrow
bandgap,
exceptional
visible
light
response,
large
specific
surface
area,
high
crystallinity,
surface‐active
sites,
leading
an
impressive
activity
24.87
µmolg
−1
h
strong
stability.
Theoretical
calculations
reveal
conversion
CH
4
on
follows
formaldehyde
carbine
pathways.
This
study
provides
significant
insights
designing
innovative
oxide‐based
economical
efficient
systems.
Journal of the Chinese Chemical Society,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 29, 2024
Abstract
In
this
study,
Cu
2
O
was
prepared
using
a
one‐step
reduction
method,
and
Bi
WO
6
uniformly
mixed
with
in
various
proportions
to
obtain
O/Bi
composites
different
contents.
The
samples
(Cu
)
were
used
as
photocatalytic
materials
the
photo‐reductive
conversion
of
CO
into
CH
4
CO.
morphology,
microstructure,
chemical
composition
obtained
photocatalysts
investigated
series
characterization
methods,
including
X‐ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
transmission
(TEM),
UV–visible
spectroscopy
(UV–vis),
photoelectron
(XPS).
Furthermore,
photoreduction
studied
under
low‐power
visible
LED
lights
irradiation
(blue
green
LED)
save
energy.
Experimental
results
showed
that
3:1
ratio
possessed
optimal
properties,
yielding
27.4
μmol
g
−1
methane
30.6
carbon
monoxide
light.
Zeitschrift für Physikalische Chemie,
Journal Year:
2023,
Volume and Issue:
238(3), P. 487 - 508
Published: Dec. 19, 2023
Abstract
The
present
research
is
characterized
by
ecofriendly,
low
cost
and
robust
methods
to
synthesize
calcium
hydroxide
(CH)
nanoparticles
using
clove
oil
as
capping
reducing
agent
nonionic
block
copolymers
surface
modifiers
particle
size
reducers.
prepared
were
UV–visible
spectroscopy,
dynamic
laser
light
scattering,
X-ray
diffraction,
Fourier
transform
infra-red
energy
dispersive
spectroscopy
transmission
electron
microscopy.
average
effective
diameter
crystallite
of
calculated
from
DLS
XRD
97–178
22–36
nm
respectively.
synthesized
NPs
showed
excellent
catalytic
activities
against
Allura
red
Fast
green
dye.
They
also
improved
anti-bacterial
antifungal
Staphylococcus
aureus
,
Klebsiella
pneumonia
Candida
albicans
with
minimum
inhibitory
concentration
50
μl
ml
−1
.
nanocrystals
incorporated
into
gum
Arabic
be
used
consolidant
for
archaeological
bone
fragments
fill
the
cracks,
reinforce
their
mechanical
features
save
them
further
decay.
SEM
images
all
before
after
treatment
clearly
specify
effectiveness
this
treatment.
