Nanomaterials,
Год журнала:
2025,
Номер
15(5), С. 366 - 366
Опубликована: Фев. 27, 2025
With
the
advancement
of
industrial
production
and
urban
modernization,
pollution
from
heavy
metal
ions
accumulation
solid
waste
have
become
critical
global
environmental
challenges.
Establishing
an
effective
recycling
system
for
removing
metals
wastewater
is
essential.
Coal
gangue
was
used
in
this
study
as
primary
material
synthesis
a
fully
coal
gangue-based
phosphorus-silicon-aluminum
(SAPO-5)
molecular
sieve
through
hydrothermal
process.
The
SAPO-5
characterized
several
methods,
including
X-ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
BET
surface
analysis,
Fourier-transform
infrared
(FT-IR)
spectroscopy,
photoelectron
spectroscopy
(XPS),
to
examine
its
mineral
phases,
microstructure,
pore
characteristics,
structure.
Adsorption
performance
towards
with
Cd2+
Pb2+
investigated.
It
found
that
adsorption
processes
these
are
well
described
by
both
pseudo-second-order
model
Langmuir
isotherm.
According
model,
exhibited
maximum
capacities
93.63
mg·g-1
157.73
Pb2+.
After
five
cycles,
retained
strong
stability
adsorbing
Pb2+,
residual
77.03
138.21
excellent
mainly
attributed
mesoporous
channel
effects,
complexation
-OH
functional
groups,
electrostatic
attraction.
Hydrogels
have
emerged
as
promising
sensors
for
detecting
heavy
metal
ions
in
fluids
and
been
extensively
developed.
However,
monitoring
of
multiple
target
analytes
Chinese
herbs
remains
challenging
due
to
subtle
chemical
signals
the
complex
composition
extracted
solutions.
To
address
these
challenges,
we
developed
a
hydrogel
optofluidic
sensor
amplify
analyte
through
strong
light-matter
interactions
within
hydrogel.
This
sensing
platform
integrates
film
encapsulated
whispering-gallery-mode
(WGM)
microcavity
detection
ions,
such
Pb2+
Hg2+.
The
3D
cross-linked
hydrophilic
polymer
network
facilitates
ion
penetration
from
solutions,
inducing
distinct
WGM
resonance
shifts.
red
shift
spectral
wavelength
serves
parameter
quantify
content
ions.
By
modification
with
aptamers,
achieve
high
sensitivity
selectivity.
Finally,
platform's
performance
was
demonstrated
using
varying
concentrations,
highlighting
its
practical
applicability
real-world
scenarios.
proposed
exhibit
method
development
functional
healthcare
applications.
