Tópicos de Investigación en Ciencias de la Tierra y Materiales,
Год журнала:
2024,
Номер
11(11), С. 110 - 117
Опубликована: Окт. 5, 2024
El
objetivo
de
este
trabajo
fue
la
obtención
un
material
óxido
titanio-acetato
celulosa
(TiO2-AC)
en
forma
película,
con
propiedades
adsorbentes
y
fotocatalíticas.
Se
utilizó
azul
metileno
(AM)
como
modelo
las
pruebas
adsorción
fotocatálisis
bajo
irradiación
solar.
Los
resultados
caracterización
morfológica
óptica
muestras
indican
que
se
obtuvieron
películas
blancas,
flexibles
porosas,
band
gap
3.15
eV.
química
estructural
película
es
composito
TiO2-AC,
resultando
interacción
entre
los
grupos
acetil
del
polímero
el
grupo
tinalol
TiO2.
evaluación
nanopartículas
TiO2
TiO2-AC
AM
bien
modelada
por
isoterma
Langmuir.
valores
constantes
velocidad
remoción
son
mayores
orden
magnitud
fotodegradación,
debido
a
funcionalidad
dual
adsorbente/fotocatalizador
ambas
muestras.
Catalysts,
Год журнала:
2025,
Номер
15(2), С. 134 - 134
Опубликована: Фев. 1, 2025
Pharmaceuticals
are
increasingly
significant
contaminants
in
the
environmental
ecosystem,
prompting
exploration
of
photocatalysis
as
a
promising
method
for
removing
their
pollutants.
However,
application
semiconductor
metal
oxides
photocatalysts
has
been
limited
by
issues
such
rapid
photocarrier
recombination
and
high
band
gap
energy.
One
emerging
strategy
to
enhance
photocatalytic
performance
involves
integrating
them
with
carbon
dots,
which
offer
advantages
including
low
toxicity,
aqueous
stability,
increased
surface
area,
cost
effectiveness,
biocompatibility,
chemical
inertness.
In
this
study,
we
conducted
critical
review
focusing
on
nanocomposite
development
oxide/carbon
dots
removal
pharmaceutical
Our
study
highlights
that
can
significantly
efficiency
these
materials
improving
adsorption
organic
pollutants
enhancing
light
absorption
visible
spectrum.
This
aims
provide
insights
future
research
aimed
at
advancing
enhanced
dot
nanocomposites.
Molecules,
Год журнала:
2025,
Номер
30(6), С. 1286 - 1286
Опубликована: Март 13, 2025
The
rational
design
of
BiOBr
photocatalysts
with
optimized
surface
properties
and
enhanced
photooxidative
capacities
is
crucial.
This
study
proposes
a
synergistic
strategy
combining
hydroxyl-rich
solvents
polyvinylpyrrolidone
(PVP)
surfactants
to
modulate
the
structural
electronic
through
solvothermal
approach.
resulting
self-assembled
microspheres
demonstrated
exceptional
efficiency
in
degrading
ciprofloxacin
(CIP),
methyl
orange
(MO),
rhodamine
B
(RhB).
Among
synthesized
variants,
BiOBr-EG-PVP
(fabricated
ethylene
glycol
PVP)
exhibited
highest
photocatalytic
activity,
achieving
near-complete
removal
20
mg/L
CIP
RhB
within
10
min
under
visible
light
irradiation,
degradation
rates
60.12–101.73
times
higher
than
pristine
BiOBr.
characterization
revealed
that
(EG)
not
only
induced
formation
but
also
introduced
abundant
hydroxyl
groups,
which
simultaneously
hole-mediated
oxidation
capabilities.
incorporation
PVP
further
promoted
development
hierarchical
honeycomb-like
synergistically
both
group
density
potential
interfacial
engineering.
Density
functional
theory
(DFT)
calculations
confirmed
performance
originated
from
an
increased
oxygen
content.
work
elucidates
effects
surfactant
modification
fabrication
advanced
BiOBr-based
photocatalysts,
providing
new
insights
for
high-performance
photocatalysis
environmental
remediation.
Langmuir,
Год журнала:
2024,
Номер
40(35), С. 18486 - 18502
Опубликована: Авг. 22, 2024
Carbon-based
nanostructures
are
promising
eco-friendly
multifunctional
nanomaterials
because
of
their
tunable
surface
and
optoelectronic
properties
for
a
variety
energy
environmental
applications.
The
present
study
focuses
on
the
synthesis
graphene
oxide
(GO)
with
particular
emphasis
engineering
its
optical
making
it
an
excellent
adsorbent
as
well
visible
light-active
photocatalyst.
It
was
achieved
by
modifying
improved
Hummers
method
through
optimizing
parameters
involved
in
oxidation
process.
This
controlled
allows
systematic
tailoring
structural,
optical,
functionality,
leading
to
adsorption
photocatalytic
sustainable
removal
organic
pollutants
water
treatment.
Several
spectroscopic
microscopic
characterization
techniques,
such
XRD,
SEM,
Raman,
UV-visible,
FTIR,
TEM,
XPS,
BET,
etc.
were
employed
analyze
degree
oxidation,
chemistry/functionalization,
morphological,
structural
synthesized
GO
nanostructures.
analyses
showed
functionality
active
sites
better
adsorptive
band
gap
from
2.51
2.76
eV
exhibiting
natural
sunlight
activity
(>99%)
pollutant.
Various
isotherms
have
been
studied
capability
(
