Superhydrophobic Surface-Enhanced Raman Spectroscopy (SERS) Substrates for Sensitive Detection of Trace Nanoplastics in Water
Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 23, 2025
Nanoplastics,
emerging
as
pervasive
environmental
pollutants,
pose
significant
threats
to
ecosystems
and
human
health
due
their
small
size
potential
toxicity.
However,
detecting
trace
levels
of
nanoplastics
remains
challenging
because
limitations
in
the
current
analytical
methods.
Herein,
we
propose
a
method
that
combines
superhydrophobic
enrichment
with
SERS
analysis
for
aqueous
environments.
Superhydrophobic
substrates
were
prepared
by
using
liquid-liquid
self-assembly
method.
The
superhydrophobicity
facilitated
analyte
enrichment,
monolayer
Au
nanoparticles
(AuNPs)
enhanced
Raman
signals.
detection
limit
probe
crystal
violet
(CV)
this
substrate
reached
nanomolar
(10-9
M),
an
RSD
9.96%
across
40
×
μm2
area
(441
spots),
demonstrating
excellent
sensitivity
reproducibility.
This
successfully
detected
polystyrene
(PS)
plastics
ranging
from
30
1000
nm
water
concentrations
low
0.03
μg/mL.
Additionally,
nanoscale
polyethylene
terephthalate
(PET)
particles
bottled
samples.
approach
offers
promising
platform
analyzing
samples
addresses
needs
monitoring.
Язык: Английский
Nanostructured Surfaces with Plasmonic Activity and Superhydrophobicity: Review of Fabrication Strategies and Applications
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 5, 2025
Plasmonics
and
superhydrophobicity
have
garnered
broad
interest
from
academics
industry
alike,
spanning
fundamental
scientific
inquiry
practical
technological
applications.
Plasmonic
activity
rely
heavily
on
nanostructured
surfaces,
providing
opportunities
for
their
mutually
beneficial
integration.
Engineering
surfaces
at
microscopic
nanoscopic
length
scales
is
necessary
to
achieve
plasmonic
activity.
However,
the
dissimilar
surface
energies
of
materials
commonly
used
in
fabricating
superhydrophobic
different
pose
various
challenges
harnessing
properties
synergy.
In
this
review,
an
overview
techniques
that
researchers
developed
over
years
overcome
challenge
provided.
The
underlying
mechanisms
both
plasmonics
are
first
overviewed.
Next,
a
general
classification
scheme
introduced
strategies
properties.
Following
that,
applications
multifunctional
presented.
Lastly,
future
perspective
presented,
highlighting
shortcomings,
new
directions.
Язык: Английский
Stable aggregated silver nanoparticle in water with strong and wavelength-tunable localized surface plasmon resonance for liquid-state SERS substrates
Journal of Molecular Liquids,
Год журнала:
2025,
Номер
unknown, С. 127113 - 127113
Опубликована: Фев. 1, 2025
Язык: Английский
Microfluidic-SERS sensing system based on dual signal amplification and aptamer for gastric cancer detection
Microchimica Acta,
Год журнала:
2024,
Номер
191(11)
Опубликована: Окт. 14, 2024
Язык: Английский
A novel controllable nanocyclic plasma coupled array in SERS trace detection of multi-component trace pollutants
Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy,
Год журнала:
2024,
Номер
326, С. 125271 - 125271
Опубликована: Окт. 11, 2024
Язык: Английский
Superhydrophobic/-philic SERS Platform Based on Femtosecond Laser-Induced Periodic Surface Structures and Ag Nanoparticles
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(21), С. 25014 - 25024
Опубликована: Окт. 23, 2024
The
trace
detection
of
molecules
from
highly
diluted
solutions
is
critical
for
biomedical
diagnostics,
environmental
monitoring,
food
safety,
and
pharmaceutical
quality
control.
We
introduce
a
sensitive
superhydrophobic/-philic
surface-enhanced
Raman
scattering
(SERS)
platform
with
specific
patterns
detection.
A
superhydrophobic
structure
was
fabricated
on
stainless
steel
using
femtosecond
laser-induced
periodic
surface
structures
chemical
modification
annealing.
wavy
strips,
measuring
654
nm
in
width,
are
uniformly
distributed
across
large
area.
Superhydrophilic
various
sizes
shapes
were
then
created
the
through
nanosecond
laser
processing.
Studying
droplet
evaporation
process
deposition
characteristics
shows
that
target
concentrate
at
vertex
positions
superhydrophilic
pattern,
significantly
enhancing
SERS
performance.
triangular
pattern
an
800
μm
circumcircle
diameter
exhibited
highest
enhancement
among
patterns.
demonstrated
crystal
violet
mixed
Ag
nanoparticles
averaging
54
diameter,
achieving
Limit
Detection
(LOD)
1.22
×
10–15
M
factor
3.69
1010.
Furthermore,
we
integrated
our
COF@Ag.
COFs
display
nearly
spherical
morphology
average
925
nm,
their
surfaces
densely
covered
nanoparticles.
This
enhances
platform's
efficiency
detection,
enabling
successful
antibiotic
amoxicillin
LOD
1.01
10–11
M.
demonstrates
practical
application
biosensing
quantitative
analysis,
positioning
it
as
powerful
tool
fields.
Язык: Английский