Sustainability,
Journal Year:
2025,
Volume and Issue:
17(2), P. 395 - 395
Published: Jan. 7, 2025
Mushroom
production
is
increasing
rapidly
worldwide,
raising
public
concern
about
the
contamination
effects
of
spent
mushroom
substrates
(SMS).
Preparation
Fe–N-doped
biochar
(Fe-N-BC)
from
SMS
as
a
raw
material
for
catalytic
degradation
antibiotics
in
water
may
be
an
effective
and
sustainable
solid
waste
treatment.
However,
there
limited
information
available.
This
study
investigated
effect
potential
mechanism
SMS-based
Fe-N-BC
prepared
at
300,
600,
900
°C
to
catalyze
persulfate
(PS)
tetracycline
(TC)
removal.
The
results
indicated
that
performance
was
significantly
enhanced
with
pyrolysis
temperature.
Notably,
exhibited
high
TC
removal
efficiency,
95%
120
min.
might
closely
related
fact
temperatures
had
more
Fe
oxides
active
sites.
Adsorption
radical
non-radical
pathways
were
main
mechanisms
by
Fe-N-BC/PS
systems,
especially
contribution
SO4·−.
By
identifying
products,
three
possible
proposed,
toxicity
intermediates
evaluated.
reusability
analysis
good
practical
application,
rate
still
reached
76%,
even
after
five
cycles.
These
findings
provide
valuable
reference
resources’
utilization
remediation
antibiotic-contaminated
water.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Abstract
The
oxygen
reduction
reaction
(ORR)
in
an
acidic
environment
is
crucial
for
fuel
cell
technology.
Understanding
its
complex
kinetics
and
developing
advanced
catalyst
materials
have
the
potential
to
drive
significant
improvements
energy
efficiency,
paving
way
sustainable,
green
solutions.
In
this
work,
Iron‐Nitrogen‐Carbon@aerogel
(Fe(FcP)
x
‐N‐C@Aerogel)
catalysts
are
developed
by
carbonizing
polypyrrole
(PPy)
ferrocene.
ORR
performance
of
these
investigated
across
different
annealing
temperatures.
catalysts’
shape
structure
validated
through
scanning
electron
microscopy
(SEM)
X‐ray
photoelectron
spectroscopy
(XPS),
revealing
that
changes
temperature
affect
morphology
nitrogen‐containing
functional
groups
catalyst.
Linear
sweep
voltammetry
(LSV)
rotating
disk
electrode
(RDE)
studies
demonstrated
Fe(FcP)
800
‐N‐C@Aerogel
exhibit
excellent
performance,
with
a
half‐wave
0.687
V
average
transfer
number
3.98
under
conditions.
These
findings
suggest
near‐four‐electron
pathway,
highlighting
catalyst's
strong
activity,
high
durability,
only
17.4
mV
LSV
curve
decay
after
10,000
cycles.
conclusion,
advances
catalysis
media
delivering
exceptional
driven
innovative
architecture
precisely
engineered
active
sites,
setting
new
benchmark
high‐efficiency
conversion.
