Nanomaterials,
Год журнала:
2024,
Номер
14(24), С. 2048 - 2048
Опубликована: Дек. 21, 2024
Photocatalytic
technology
holds
significant
promise
for
sustainable
development
and
environmental
protection
due
to
its
ability
utilize
renewable
energy
sources
degrade
pollutants
efficiently.
In
this
study,
BiOI
nanosheets
(NSs)
were
synthesized
using
a
simple
water
bath
method
with
varying
amounts
of
mannitol
reaction
temperatures
investigate
their
structural,
morphological,
photoelectronic,
photocatalytic
properties.
Notably,
the
introduction
played
critical
role
in
inducing
transition
from
an
n-type
p-type
semiconductor,
as
evidenced
by
Mott–Schottky
(M-S)
band
structure
analyses.
This
transformation
enhanced
density
holes
(h+)
primary
charge
carriers
resulted
most
negative
conduction
(CB)
position
(−0.822
V
vs.
NHE),
which
facilitated
generation
superoxide
radicals
(·O2−)
activity.
Among
samples,
BiOI-0.25-60
NSs
(synthesized
0.25
g
at
60
°C)
exhibited
highest
performance,
characterized
largest
specific
surface
area
(24.46
m2/g),
optimal
gap
(2.28
eV),
efficient
photogenerated
separation.
experiments
demonstrated
that
achieved
superior
methylene
blue
(MB)
degradation
efficiency
96.5%
under
simulated
sunlight,
1.14
times
higher
than
BiOI-0-70
NSs.
Additionally,
effectively
degraded
tetracycline
(TC),
2,4-dichlorophenol
(2,4-D),
rhodamine
B
(Rh
B).
Key
factors
such
photocatalyst
concentration,
MB
solution
pH
analyzed,
excellent
recyclability,
retaining
over
94.3%
activity
after
three
cycles.
Scavenger
tests
further
identified
·O2−
h+
dominant
active
species
driving
process.
pivotal
modulating
semiconductor
characteristics
nanomaterials
is
underscored,
particularly
promoting
enhancing
efficiency.
These
findings
provide
valuable
strategy
designing
high-performance
photocatalysts
remediation
applications.
Energy Conversion and Management X,
Год журнала:
2024,
Номер
23, С. 100675 - 100675
Опубликована: Июль 1, 2024
As
the
world
addresses
increasing
demand
for
sustainable
energy
solutions,
biodiesel
has
surfaced
as
a
viable
alternative
to
conventional
fossil
fuels.
The
expansion
of
feedstock
plantations,
particularly
palm
oil
in
tropical
regions,
can
lead
deforestation,
loss
biodiversity,
and
significant
carbon
emissions
from
destruction
carbon-rich
ecosystems.
That
is
why
this
article
focuses
on
production
waste
sources
order
maintain
balance
ecosystem.
This
review
paper
discusses
global
landscape
need
renewable
environmentally
friendly
alternatives.
It
explores
various
depth
that
are
investigated
production,
comprising
cooking
oil,
animal
fats,
algae,
other
organic
residues.
Each
analyzed
its
viability,
challenges,
economic
feasibility
production.
A
critical
assessment
different
methods,
such
transesterification,
pyrolysis,
thermochemical
conversion,
anaerobic
digestion,
thermal
cracking,
hydro-treating
enzymatic
processes,
presented,
highlighting
key
factors
influencing
their
efficiency
scalability.
Recent
developments
enhance
waste-derived
production's
sustainability
viability
meet
UN
Sustainable
Development
Goals
also
highlighted.
Furthermore,
environmental
impact
biodiesel,
including
greenhouse
gas
land
use,
discussed
provide
holistic
understanding
ecological
footprint.
significantly
increase
brake
engine
along
with
substantial
decrease
like
CO
HC.
However,
NOx
CO2
increased
application
sources.
be
reduced
by
exhaust
recirculation
selective
catalytic
reduction
techniques.
regulatory
frameworks
standards
governing
sources,
emphasizing
harmonized
policies
encourage
widespread
adoption.
concludes
outlining
future
research
directions
potential
breakthroughs
could
further
effectiveness,
sustainability,
scalability
Waste
Cooking
Oil
(WCO)
fats
currently
most
economically
feasible
options
due
low
cost
established
collection
processing
infrastructure.
Algae
present
high
but
require
technological
advancements
reductions
become
viable.
aims
assist
researchers,
policymakers,
industry
stakeholders
advancing
utilization
materials
promoting
more
landscape.
Polymers,
Год журнала:
2025,
Номер
17(3), С. 368 - 368
Опубликована: Янв. 29, 2025
Waste
cooking
oils
(WCOs)
are
generated
globally
from
households,
the
hospitality
industry,
and
other
sectors.
Presently,
WCOs
mainly
employed
as
feedstock
for
biodiesel
energy
production,
strongly
depending
on
availability
of
WCOs,
which
often
imported
countries.
The
objective
this
review
is
to
give
an
overall
comprehensive
panorama
impacts,
regulations,
restrictions
affecting
their
possible
uses
producing
high-value
products,
such
bio
lubricants,
surfactants,
polymer
additives,
road
construction
solvents.
Interestingly,
many
reviews
reported
in
literature
that
address
use
but
a
topic
missing.
Published
studies,
industry
reports,
regulatory
documents
were
examined
identify
trends,
challenges,
production
statistics,
environmental
current
production.
data
collected
show
hold
immense
potential
renewable
resources
sustainable
industrial
applications
line
with
global
carbon
neutrality
goals
circular
economy
principles.
However,
achieving
shift
requires
addressing
gaps,
enhancing
collection
systems,
optimizing
conversion
technologies.
This
underlines
need
collaborative
efforts
among
policymakers,
stakeholders,
researchers
maximize
contribute
development.
Polymers,
Год журнала:
2025,
Номер
17(7), С. 887 - 887
Опубликована: Март 26, 2025
Waste
cooking
oils
(WCOs)
are
generated
globally
in
significant
amounts
by
various
sectors
including
hospitality,
households,
and
industrial
operations.
Many
nations
currently
lack
dedicated
legislation
for
managing
WCOs,
creating
a
pressing
environmental
challenge.
At
present,
WCOs
primarily
utilized
industries
as
raw
materials
biodiesel
production
energy
generation.
However,
their
role
second-generation
is
contingent
on
availability,
often
necessitating
imports
of
either
or
from
other
countries.
The
European
Union
has
emphasized
the
importance
prioritizing
biowaste
high-value
alternative
products
beyond
to
achieve
carbon
neutrality
2050.
reviews
have
been
published
literature
reporting
potential
WCO
applications
produce
biolubricants,
biosolvents,
animal
feed,
asphalt
additives,
among
others,
however,
no
detailed
analysis
trends
ever
presented.
Within
this
panorama,
unlike
existing
that
focus
specific
polymer
classes
derived
work
sought
present
comprehensive
overview
use
polymeric
fuel
energy,
providing
general
patents
(or
alive)
last
10
years,
together
with
which
innovative
being
introduced
sold
market
today.
Abstract
This
study
aimed
to
enhance
the
economic
viability
and
sustainability
of
cotton
industry
by
converting
cottonseed
into
energy.
Cottonseed
was
subjected
lipid
extraction
for
biodiesel
production,
a
pyrolysis
test
conducted
under
N
2
CO
conditions
valorise
defatted
cottonseed.
Under
conditions,
increase
in
concentration
due
homogeneous
reaction
with
volatile
matters.
Biochar,
pyrolytic
product
cottonseed,
used
as
catalyst
thermally
induced
transesterification,
showed
high
performance
conversion
efficiency
its
abundant
alkaline
earth
metals
meso-/macro-pores.
For
example,
transesterification
using
silica
at
250
˚C
yielded
only
1.6
wt.%
biodiesel,
whereas
biochar
same
temperature
resulted
significantly
higher
yield
83.5
wt.%.
experimentally
proved
that
7,900
tons
(304
million
MJ)
could
be
produced
annually,
surpassing
diesel
fuel
requirement
(145
cultivation.
These
results
indicate
potential
fully
replace
fossil
fuels
industry.
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