Advanced Engineering Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 30, 2024
This
study
investigates
the
critical
role
of
adsorption
in
development
electrochemical
sensors,
focusing
on
carbon
(Vulcan
XC72R,
acetylene
black,
and
graphite)
zeolite
(high‐silica
ZSM‐5
all‐silica
β)
materials.
Based
paracetamol
characteristics
these
materials,
an
optimized
disposable
sensor
is
created.
exhibits
a
linear
range
up
to
5
μM
remarkable
detection
limit
150
nM
(S/N
=
3),
≈1000‐time
improvement
over
blank
sensor.
Moreover,
can
be
measured
selectively
because
glucose
has
no
affinity
for
selected
These
findings
underscore
significance
properties
material
selection
enhancing
sensitivity
robustness
against
interfering
species.
Materials Research Express,
Journal Year:
2023,
Volume and Issue:
10(3), P. 034001 - 034001
Published: Feb. 17, 2023
Abstract
There
are
rising
issues
regarding
the
presence
and
discharge
of
emerging
pollutants
(EPs)
in
ecosystem,
including
pharmaceutical
waste,
organic
contaminants,
heavy
metals,
pesticides,
antibiotics
dyes.
The
human
populace
is
typically
exposed
to
a
variety
EPs
toxins,
such
as
those
found
soil,
air,
food
supply,
drinkable
water.
Thus,
creating
new
purification
methods
effective
pollution
detection
tools
significant
task.
Several
researchers
globally
have
created
unique
analytical
techniques
chromatography/mass
gaseous
atomic
absorption
spectroscopy
for
identification
contaminants
date.
aforementioned
excellent
sensitivity,
but
they
costly,
time-consuming,
need
sophisticated
expertise
operate
difficult
execute
due
their
enormous
scale.
Electrochemical
sensors
with
resilience,
specificity,
sensibility,
real-time
observations
thus
been
designed
solution
shortcomings.
development
innovative
systems
assures
environmental
protection
has
aided
by
improvements
nanostructured
carbon-based
electrochemical
sensor
platforms.
These
platforms
show
enticing
characteristics
electrocatalytic
operations,
increased
electrical
conductance,
efficient
surface
region
when
compared
conventional
methods.
This
paper
intends
provide
an
analysis
low-cost
from
2015
2022
that
could
detect
eradicate
components
various
origins.
review
discusses
uses
sensors,
which
include
carbon
nanotubes,
MXenes,
dots/graphene
dots,
graphene/graphene
oxide,
other
materials.
used
metal
ions
(Pb(II),
Cd(II),
Hg(II),
etc),
dyes
pesticides.
Additionally,
processing
characterization
techniques,
differential-pulsed
voltammograms,
SW
ultraviolet-visible
spectroscopy,
fluorescence,
impedance
(EIS),
cyclic
voltammetry
(CV)
scanning
electron
microscopy
(SEM)
discussed
detail
examine
prospects
these
associated
mechanisms.
It
intended
this
would
stimulate
protecting
public
health
restoring
environment.
Nanotoxicology,
Journal Year:
2024,
Volume and Issue:
18(3), P. 272 - 298
Published: April 2, 2024
Synthetic
dyes
play
a
crucial
role
in
our
daily
lives,
especially
clothing,
leather
accessories,
and
furniture
manufacturing.
Unfortunately,
these
potentially
carcinogenic
substances
are
significantly
impacting
water
systems
due
to
their
widespread
use.
Dyes
from
various
sources
pose
serious
environmental
threat
owing
persistence
toxicity.
Regulations
underscore
the
urgency
addressing
this
problem.
In
response
challenge,
metal
oxide
nanoparticles
such
as
titanium
dioxide
(TiO2),
zinc
(ZnO),
iron
(Fe3O4)
have
emerged
intriguing
options
for
dye
degradation
unique
characteristics
production
methods.
This
paper
aims
explore
types
of
suitable
degradation,
synthesis
methods,
properties
nanoparticles.
The
study
elaborates
on
photocatalytic
adsorption-desorption
activities
nanoparticles,
elucidating
application
potential.
Factors
influencing
including
nanoparticle
conditions,
discussed.
Furthermore,
provides
relevant
case
studies,
practical
applications
treatment,
effluent
treatment
specifically
textile
sector.
Challenges
agglomeration,
toxicity
concerns,
cost-effectiveness
acknowledged.
Future
advancements
nanomaterial
synthesis,
integration
with
other
materials,
impact
regulations
potential
areas
development.
conclusion,
possess
immense
reducing
pollution,
further
research
development
essential
define
long-term
management.
Industrial & Engineering Chemistry Research,
Journal Year:
2023,
Volume and Issue:
62(11), P. 4754 - 4764
Published: March 14, 2023
Bisphenol
A
(BPA)
is
broadly
used
in
the
plastic
industry
and
has
several
health
effects,
especially
on
brain
prostate
gland
of
fetuses.
BPA
a
major
environmental
pollutant
that
drains
into
bodies
water
leaches
from
food
packaging.
Since
it
known
endocrine
disruptor,
its
extensive
release
environment
serious
concern.
Thus,
regular
monitoring
through
reliable
sensitive
method
strategy
can
help
alleviate
impact.
To
tackle
this
issue,
an
excellent
conductive
material
based
NiO/ZnO/rGO
nanohybrid
was
as
electrocatalyst
to
determine
drinking
samples.
The
engineered
characterized
XRD,
EDX,
SEM.
EDX
mapping
also
examine
purity,
surface
texture,
focused
elemental
composition
nanohybrid.
average
size
prepared
calculated
43.7
nm,
which
confirmed
nanometric
material.
behavior
fabricated
sensor
NiO/ZnO/rGO/PtE
examined
electrochemical
impedance
spectroscopy
(EIS)
cyclic
voltammetry.
modified
revealed
nature
with
ohmic
resistance
be
412
Ω,
lower
than
bare
electrode
GO/PtE
(3628
2239
respectively).
Under
optimal
parameters,
showed
response
for
BPA.
With
linear
dynamic
range
0.07–30
μM,
manifested
lowest
possible
detection
limit
found
(4.0
nM).
analytical
applicability
proposed
investigated
bottled
tap
water.
Furthermore,
both
acceptable
recovery
values
anti-interference
ability
indicated
effectiveness
potential
commercial
utilization
NiO/ZnO/rGO/PtE.
mineral
were
97.0%,
99.0%,
97.3%
101%,
99.6%,
98.7%,
respectively.
Materials Science for Energy Technologies,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 1, 2024
In
this
study,
we
investigated
the
electrochemical
catalysis
potential
of
hybrid
nanocomposites
containing
CdO,
Co
and
ZnO
nanocomposites,
as
opposed
to
Zn-O
doped
have
weaker
Coulomb
interactions
due
their
ionic
bonds.
Because
CdO
form
a
covalent
bond,
interacts
more
strongly
with
O
than
Zn.
order
reduce
nanoparticle
crystallinity,
oxygen
defects
improve
interaction
between
−O
in
lattice.
From
SEM
micrographs,
it
appears
that
does
not
completely
change
under
influence
dopants.
It
can
be
seen
from
image
both
materials
very
tightly
packed
particles.
The
dopants
prevent
them
absorbing
large
range
visible
wavelengths.
is
energy-dense
for
5.28
eV
compare
5.14
nanocomposites.
fact
matrix
has
tuneable
bandgap
evident
since
different
types
are
used
its
manufacture.
There
at
least
three
distinct
absorption
modes
around
450,
498,
676
cm−1.
addition
450
cm−1
498
vibrational
modes,
Co-O
stretching
along
[1
0
1]
plane
also
been
observed
As
method
studying
charge
carriers,
photoluminescence
spectroscopy
usually
used.
This
analyze
electron-hole
pairs
(e−/h+)
formed
by
semiconducting
blue
emission
luminescence
band
615
nm
valence
635
nm.
With
increasing
cobalt
zinc
concentrations,
nanomaterials
lose
remanent
magnetization.
demonstrated
significant
coercive
effects
pure
additively
incorporated
solutions
regardless
anisotropic,
morphological,
porosity,
particle
size
distribution.
Electrochemical
impedance
spectrum
measurements
were
conducted
100
kHz
0.01
Hz.
According
Nyquist
plot,
purity
Co,
show
high
frequency
resistance
transfer.
Nanocomposites
contained
&
exposed
UV
light
120
min
remove
solution.
degradation
MO
virtually
nonexistent
when
no
photocatalyst
present,
but
photocatalyst,
reach
92.56
%.
Catalysts,
Journal Year:
2023,
Volume and Issue:
13(1), P. 141 - 141
Published: Jan. 7, 2023
An
efficient
and
reliable
electrochemical
sensing
platform
based
on
COOH-fMWCNTs
modified
GCE
(COOH-fMWCNTs/GCE)
was
designed
for
the
detection
of
nanomolar
concentration
Nile
Blue
Sulphate
(NBS).
In
comparison
to
bare
GCE,
scaffold
considerably
enhanced
peak
current
response
NBS
dye
as
confirmed
from
results
voltammetric
investigations.
The
approach
detecting
in
droplet
its
solution
dried
over
surface
electrode
validated,
role
modifier
enhancing
response.
Under
optimized
conditions,
demonstrated
a
wide
linearity
range
(0.03–10
μM)
NBS,
with
LOD
1.21
nM.
Moreover,
COOH-fMWCNTs/GCE
found
reproducible
stable
by
repeatability
inter-day
durability
tests.
selectivity
matrix
ensured
anti-interference
photocatalytic
degradation
carried
out
using
TiO2
nanoparticles
photocatalyst
presence
H2O2.
UV-visible
spectroscopic
studies
revealed
95%
following
pseudo-first-order
kinetics
rate
constant
0.028
min−1.
These
findings
were
supported
electrochemically
monitoring
photocatalytically
degraded
at
platform.
color
variation
final
decolorization
selected
water
served
visual
indicator
process.
To
conclude,
immobilized
imparted
improved
sensitivity
detect
to,
monitor
NBS.
Nanomaterials,
Journal Year:
2023,
Volume and Issue:
13(15), P. 2218 - 2218
Published: July 30, 2023
Herein,
we
report
an
electrochemical
scaffold
consisting
of
functionalized
multiwalled
carbon
nanotubes
(COOH-fMWCNTs)
and
iron-doped
zinc
oxide
nanoparticles
(Fe-ZnO)
for
the
detection
a
hazardous
textile
dye
safranin
T
(ST)
monitoring
its
photocatalytic
degradation.
Prior
to
degradation
analysis,
Fe-ZnO
NPs
were
synthesized
by
sol-gel
method
characterized
number
structural
morphological
techniques.
The
carboxyl
moiety
COOH-fMWCNTs
possessing
strong
affinity
amino
functionality
ST
led
significant
enhancement
current
response
at
designed
platform,
whereas
electrocatalytic
role,
surface
area
enhancement,
provision
binding
sites
further
increase
in
peak
intensity
ST.
Electrochemical
impedance
spectroscopy
showed
that
sensing
made
glassy
electrode
modified
with
efficiently
transfers
charge
between
transducer
redox
probe.
Under
optimized
conditions,
developed
sensor
2.3
nM
limit
Moreover,
recovery
experiments
anti-interference
tests
qualified
platform
practical
applications.
was
photocatalytically
degraded
using
up
99%
60
min
rate
constant
0.068
min-1.
used
probe
kinetics
target
dye,
results
found
consistent
findings
obtained
from
electronic
absorption
method.
To
best
our
knowledge,
present
work
is
first
approach
efficient
almost
absolute
