Agricultural Residues to High-Value Nanomaterials: Pathways to Sustainability
Resources Conservation & Recycling Advances,
Journal Year:
2025,
Volume and Issue:
unknown, P. 200243 - 200243
Published: Jan. 1, 2025
Language: Английский
Nanoscale Effects in the Room-Temperature UV–Visible Photoluminescence from Silica Particles and Its Cancer Cell Imaging
Divya Rani,
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Deepika Singh,
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Anil Kumar
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et al.
Bioconjugate Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 29, 2025
Silica
nano/microparticles
have
generated
significant
interest
for
the
past
decades,
emerging
as
a
versatile
material
with
wide
range
of
applications
in
photonic
crystals,
bioimaging,
chemical
sensors,
and
catalysis.
This
study
focused
on
synthesizing
silica
ranging
from
20
nm
to
1.2
μm
using
Stöber
modified
methods.
The
particles
exhibited
photoluminescence
emission
across
UV-visible
range,
specifically
UV
(∼290,
∼327,
∼339,
∼377
nm),
blue
(∼450
green
(∼500
yellow
(∼576
red
(∼634
nm)
electromagnetic
spectrum.
These
emissions
are
due
radiative
relaxation
processes
involving
oxygen-deficient
centers
arising
unrelaxed
oxygen
vacancies,
strong
interacting
surface
silanols,
2-fold
coordinated
silicon,
self-trapped
excitons,
hydrogen-related
species,
strain-induced
defects,
nonbridging
hole
excited
via
two-photon
single
photon
absorption.
increased
PL
intensity
decreasing
particle
size
was
attributed
higher
concentrations
defect
sites
case
smaller-sized
particles.
MTT
assay,
AO/EB
staining,
DCFDA
assay
confirmed
biocompatible
nature
HepG2
cell
line.
In
addition,
viability
normal
line
(HEK293)
also
showed
no
substantial
death.
Successful
bioimaging
cells
performed
nano/microparticles,
which
fluorescence,
along
Hoechst33258
dye.
Even
though
nm-sized
emission,
sized
above
better
fluorescence
cells,
citing
their
potential
vitro
applications.
Language: Английский
Efficacy of different forms of concentrated growth factors combined with deproteinized bovine bone minerals in guided bone regeneration: a randomized clinical trial
Lei Zhu,
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Xiaoqing Du,
No information about this author
Gang Fu
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et al.
BMC Oral Health,
Journal Year:
2025,
Volume and Issue:
25(1)
Published: Feb. 28, 2025
Language: Английский
Vortex-Mixing Microfluidic Fabrication of Micafungin-Loaded Magnetite–Salicylic Acid–Silica Nanocomposite with Sustained-Release Capacity
Materials,
Journal Year:
2024,
Volume and Issue:
17(23), P. 5816 - 5816
Published: Nov. 27, 2024
Iron
oxide
nanoparticles
were
synthesized
using
a
vortex
microfluidic
system
and
subsequently
functionalized
with
primary
shell
of
salicylic
acid,
recognized
for
its
ability
to
increase
the
stability
biocompatibility
coated
materials.
In
second
stage,
platform
was
placed
in
magnetic
field
facilitate
growth
development
porous
silica
shell.
The
selected
drug
this
study
micafungin,
an
antifungal
agent
well
regarded
effectiveness
combating
fungal
infections
identified
as
priority
compound
by
World
Health
Organization
(WHO).
resulting
nanocomposite
characterized
various
techniques,
including
Fourier
transform
infrared
spectroscopy
(FT-IR),
X-ray
diffraction
(XRD),
transmission
electron
microscopy
(TEM),
dynamic
light
scattering
(DLS),
Brunauer–Emmett–Teller
(BET)
analysis,
UV-Vis
spectroscopy,
ion
cyclotron
resonance
mass
spectrometry
(FT-ICR
MS).
synthesis
method
produced
dimensions
5–7
nm,
highlighting
advantages
chosen
approach.
A
desorption
profile
established
continuous-flow,
analysis
system,
indicating
that
bioactive
released
slowly;
after
two
hours,
approximately
50%
loaded
micafungin
detected
release
medium.
Furthermore,
results
obtained
from
FT-ICR
MS
provided
molecular-level
confirmation,
thereby
supporting
mechanism
nanosystem.
Language: Английский