Abstract
The
present
study
examined
potential
benefits
of
heteroatom
doping
to
manipulate
the
electrical
structure
and
enhance
efficiency
sensor,
with
an
emphasis
on
developing
inexpensive,
metal‐free
electrochemical
sensors.
Melamine
ammonium
oxalate
were
used
as
precursors
in
a
one‐step
thermal
polymerization
technique
yielding
oxygen‐doped
graphitic
carbon
nitride
(O‐gCN).
Following
synthesis,
material's
structural
morphological
properties
thoroughly
using
multitude
analytical
techniques,
including
EIS.
A
notable
decrease
impedance
was
observed,
suggesting
improved
conductivity.
Additionally,
approach
exhibited
noticeable
improvement
reduction
current
receptivity
surface
area
compared
unmodified
(g‐CN).
Utilizing
both
differential
pulse
voltammetry
(DPV)
classical
cyclic
(CV)
methods,
we
investigated
electro
oxidation
uric
acid
(UA)
well
concentration
dependence
selectivity
studies
modified
glassy
electrode
(O‐gCN@GCE).
O‐gCN@GCE
demonstrated
remarkable
performance,
allowing
detection
UA
concentrations
low
7.784
µAµM
−1
cm
−2
.
Its
limit
0.57
µM
wider
linear
range
(5–120
µM)
further
highlighted
its
for
extremely
sensitive
assays
capacity
operate
over
broad
range.
Abstract
Functionalized
multi‐walled
carbon
nanotubes
(MWCNTs)
have
enticed
remarkable
attention
in
the
field
of
electrochemical
sensing
applications.
Dopamine
(DA)
is
a
monoamine
neurotransmitter
released
brain
acting
as
chemical
messenger
that
communicates
messages
between
nerve
cells
and
rest
body.
Therefore,
there
significant
technological
urge
for
development
sensors
DA
body
fluids.
In
this
context,
nitrogen‐functionalized
MWCNTs
(TM‐CNT600)
were
fabricated
by
thermal
annealing
carboxylic
acid
functionalized
with
thiourea
at
600
°C
under
N
2
atmosphere.
The
XPS
spectrum
reveals
presence
nitrogen‐containing
functionalities
as‐prepared
TM‐CNT600.
FTIR
results
show
−OH,
C−N
C−S
functional
groups.
further
corroborates
quantifies
predominant
groups
material.
material
was
investigated
potential
sensor
detection
dopamine
(DA).
case
TM‐CNT600/GCE,
linear
relationship
concentration
observed
range
10.7–24.2
μM
limit
(LOD)
1.42
using
sweep
voltammetry
(LSV).
These
highlight
TM‐CNT600
modified
GCE
an
efficient
Sustainability
and
waste
management
are
equally
important
in
the
era
of
growing
energy
demands.
This
study
focuses
on
integrating
strategies
that
balance
efficiency,
reduce
generation,
promote
sustainable
practices.
The
coconut
husk
is
processed
converted
into
mesoporous
carbon
nanomaterial
through
hydrothermal‐assisted
thermal
annealing.
Nitrogen
doped
melamine
to
increase
reactive
sites
hence
catalytic
activity.
sphere‐like
morphology
was
confirmed
by
field
emission
scanning
electron
microscope
high‐resolution
transmission
images
indicate
a
dot‐like
structure.
high
Brunauer‐Emmett‐Teller
surface
area
achieved
for
this
nanostructure
1383.40
m
2
g
−1
,
with
pore
width
volume
at
2.2660
nm
0.2995
cm
3
respectively.
as‐synthesized
explored
its
electrochemical
performance
as
electrodes
supercapacitor
application,
where
materials
achieve
wide
potential
window
(−1.4
1.4
V)
minimum
time
50
s
current
density
0.6
A
.
Moreover,
highest
specific
capacitance
obtained
from
115.39
F
V
density,
power
coulombic
efficiency
set
parameter
62.31
Wh
Kg
1166.4
W
79.61%,
Finally,
practical
device
assembled
nanomaterial,
red
LED
bulb
glows
after
1
min
charging.
Abstract
Asymmetric
carbon‐based
materials
(ACBMs)
have
received
significant
attention
in
scientific
research
due
to
their
unique
structures
and
properties.
Through
the
introduction
of
heterogeneous
atoms
construction
asymmetric
ordered/disordered
structures,
ACBMs
are
optimized
terms
electrical
conductivity,
pore
structure,
chemical
composition
exhibit
multiple
properties
such
as
hydrophilicity,
hydrophobicity,
optical
characteristics,
magnetic
behavior.
Here,
recent
progress
is
reviewed,
focusing
on
potential
these
for
electrochemical,
catalysis,
biomedical
applications
advantages
over
conventional
symmetric
materials.
Meanwhile,
a
variety
strategies
including
template
method,
nanoemulsion
assembly
self‐assembly
described
detail.
In
addition,
contradictions
between
material
synthesis
application
pointed
out,
limitations
methods
morphology
modulation
means,
well
trade‐off
property
improvement
production
costs.
Finally,
future
development
path
envisioned,
emphasizing
importance
close
integration
theory
practice,
looking
forward
promoting
new
generation
high‐performance
through
in‐depth
understanding
design
principles
action
mechanisms
ACBMs.
Catalysts,
Год журнала:
2025,
Номер
15(3), С. 240 - 240
Опубликована: Март 1, 2025
Carbon
materials
have
been
employed
in
many
applications
flue
gas
purification
due
to
their
high
specific
surface
area,
good
chemical
inertness,
and
tunable
chemistry.
However,
traditional
methods
such
as
adsorption
or
metal-loaded
catalysis
can
be
financially
burdensome.
The
of
carbon
contains
abundant
vacancies,
interstitial
atoms,
boundaries,
other
defects.
These
structural
defects
are
often
modified
with
saturated
unsaturated
functional
groups
containing
heteroatoms
oxygen,
nitrogen,
etc.,
thus
possessing
a
certain
acid–base
property
redox
ability,
which
makes
the
themselves
some
catalytic
activity.
metal-free
pollutants
offers
promising
solution
improve
removal
efficiency
while
reducing
costs
significantly.
This
review
examines
research
on
for
pollutants,
presenting
recent
advancements
NOx,
SO2,
VOCs.
It
analyzes
critical
properties
that
govern
efficiency,
groups,
defects,
pore
structure.
Finally,
it
summarizes
regulating
these
achieve
higher
efficiencies
carbon-catalyzed
pollutants.
Abstract
In
this
account,
we
summarize
our
recent
progress
on
the
structural
regulation
and
selective
catalysis
of
biomass-derived
carbon-based
non-precious
nanocatalysts
(Fe,
Co,
Ni,
Cu)
in
organic
reactions
that
include
hydrogenation
functional
nitro
compounds
to
amines,
oxidation
alkenes,
coupling
reactions,
unsaturated
aldehydes.
1
Introduction
2
Fe-Based
Catalysts
3
Co-Based
4
Ni-Based
5
Cu-Based
6
Conclusions
