Sustainability,
Journal Year:
2024,
Volume and Issue:
16(23), P. 10761 - 10761
Published: Dec. 8, 2024
The
presence
of
pharmaceuticals
in
aquatic
ecosystems
is
an
issue
increasing
concern.
Regardless
the
low
concentration
water,
they
can
have
a
toxic
effect
on
both
humans
and
organisms.
Advanced
oxidation
processes
(AOPs)
been
described
as
promising
technique
for
eliminating
due
to
their
high
efficiency.
However,
cost
associated
with
application
these
reagents
energy
requirements
affected
implementation
AOPs
at
large
scales.
Biochar
has
suggested
be
used
catalyst
overcome
limitations.
considered
alternative
heterogeneous
thanks
its
physicochemical
characteristics
like
specific
surface
area,
porous
structure,
oxygen-containing
functional
groups,
electrical
conductivity,
persistent
free
radicals
(PFRs),
modifiable
properties,
structure
defects.
This
carbonaceous
material
presents
capacity
activate
oxidizing
agents
leading
formation
radical
species,
which
are
needed
degrade
pharmaceuticals.
Additionally,
AOP/biochar
systems
destroy
pharmaceutical
molecules
following
non-radical
pathway.
To
enhance
biochar
catalytic
performance,
modifications
such
iron
(Fe)
impregnation,
heteroatom
doping,
supporting
semiconductors
surface.
Although
efficiently
combination
several
mineralization
from
further
research
must
conducted
evaluate
different
regeneration
techniques
increase
biochar’s
sustainable
applicability
reduce
operational
combined
process.
Moreover,
conditions
influencing
system
required
evaluated
discern
find
that
maximize
degradation
by
systems.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
Hydrogen
production
via
water
splitting
has
been
extensively
researched
for
its
environmental
friendliness,
energy
efficiency,
and
renewability.
This
study
describes
the
development
of
TiO2-multiwalled
carbon
nanotube
(MWCNT)-SiO2
composite
thin-film
electrodes
electrophoretic
deposition
(EPD)
from
a
2-propanol
solution
MWCNTs
including
TiO2
SiO2
gels.
The
gels
were
prepared
sol-gel
method
by
mixing
in
varying
weight
ratios
to
enhance
efficiency
photoelectrochemical
splitting.
Dual
EPD
incorporates
with
C/TiO2
molar
ratio
≥0.25
while
TiO2/SiO2
5
14;
electronic
conductivity
is
improved
owing
pristine
graphene
structure
along
hydrophilicity
imparted
SiO2.
In
addition,
volume
sol
influences
anatase-to-rutile
ratio,
crystal
size,
chemical
bonds,
thereby
affecting
formation
new
levels.
optimal
results
elevated
ultraviolet-visible
absorbance,
attributed
midgap
states
generated
high
Ti-O-Si
formation,
further
leading
substantial
effective
carrier
density
water-splitting
reaction.
Furthermore,
valence
band
maximum
(VBM)
conduction
minimum,
estimated
using
ultraviolet
photoelectron
spectroscopies,
exhibited
downward
shift
increasing
volume,
followed
an
upward
shift;
meanwhile,
Fermi
level
Na2SO4
under
stimulated
solar
light
deepened.
highest
performance
achieved
at
where
VBM
deep
enough
minimize
overpotential,
flat-band
potential
aligns
set
potential,
reducing
bending
negligible
hole
depletion
layer
TiO2-solution
interface.
best
TiO2-MWCNT-SiO2
exhibits
photocurrent
∼7.4
times
higher
than
that
TiO2-MWCNT
electrode.
Journal of Saudi Chemical Society,
Journal Year:
2024,
Volume and Issue:
28(5), P. 101918 - 101918
Published: Aug. 10, 2024
In
this
study,
we
presents
a
novel
method
for
bolstering
the
photocatalytic
effectiveness
of
crystalline
titanium
dioxide
(TiO2)
through
integration
graphitic
carbon
nitride
(g-C3N4),
creating
series
TiO2/g-C3N4
nanohybrids
(TiCN-NHs).
Leveraging
an
economical
and
scalable
pyrolysis
technique,
crafted
different
ratios
these
(TiCN-NHs-1,
TiCN-NHs-2,
TiCN-NHs-3,
TiCN-NHs-4)
to
optimize
their
performance
in
harnessing
visible
light
photocatalysis.
Detailed
spectroscopic
examinations
were
performed
dissect
nanohybrids'
structural
morphological
nuances,
alongside
chemical
interactions
states.
The
primary
evaluation
prowess
was
degradation
selected
colored
organic
contaminant
under
exposure.
TiCN-NHs
showcased
unprecedented
efficiency,
surpassing
that
p-TiO2
bulk
b-g-C3N4
by
twelvefold
eightfold,
respectively,
comparable
conditions.
This
dramatic
increase
activity
is
credited
harmonious
interface
between
TiO2
g-C3N4
within
nanohybrids,
fostering
diminished
bandgap
promoting
efficient
charge
separation.
Additionally,
photoluminescence
density
state
analyses,
specifically
focusing
on
valence
band
spectra
irradiation,
further
confirmed
findings.
synergistic
effects
observed
not
only
enhance
rates
but
also
spotlight
potential
solar
energy
conversion
environmental
cleanup
applications,
offering
promising
avenue
future
research
sustainable
technologies.
