Royal Society of Chemistry eBooks,
Год журнала:
2024,
Номер
unknown, С. 1 - 41
Опубликована: Дек. 6, 2024
Biogenic
silica
(bSi)
is
also
known
as
opal,
biogenic
and
amorphous
opaline
it
can
be
described
or
silicon
dioxide
that
produced
by
living
organisms.
There
are
a
number
of
organisms
produce
bSi
in
both
terrestrial
aquatic
ecosystems,
diatoms
being
one
the
major
producers
marine
ecosystems.
The
biological
origin
makes
an
advantageous
alternative
to
existing
conventional
forms
synthetic
Si
since
sustainable,
economic
environmentally
viable.
Also,
characterized
various
structural
shapes,
(including
globular,
fibrillar,
helical,
tubular,
folded
sheets)
variations
density,
content.
physical
chemical
properties
have
made
hot
topic
research
recent
times.
using
current
ecological
sustainable
extraction
techniques
such
thermal,
methods
has
enhanced
scope
fields.
In
addition
its
inertness,
which
extremely
demanding
terms
science,
demonstrates
some
remarkable
inherent
qualities
could
used
advance
technologies
even
create
new
ones.
intrinsic
been
customized
so
several
applications,
biomedical,
photocatalysis,
enzyme
immobilization,
photonics,
energy
conversion,
storage.
Hybrid Advances,
Год журнала:
2023,
Номер
5, С. 100133 - 100133
Опубликована: Дек. 27, 2023
Silica
nanoparticles
(SiO2
NPs)
were
synthesized
from
the
sugarcane
bagasse
(SB),
pinewood
stem
(PS),
walnut
shell
ash
(WS),
and
rice
husk
(RH)
using
ambient
burning,
hydro-ball-milling,
filtration,
post-annealing
at
650
°C.
The
broadened
XRD
peak
pattern
(2θ
=
22°)
indicates
amorphous
nature
of
all
four
samples,
further
confirmed
by
circles
SAED
pattern.
Microscopic
images
(snap-shots,
SEM,
TEM)
revealed
agglomeration
SiO2
NPs
with
an
average
grain
size
40–80
nm.
All
samples'
bandgap
(Eg)
was
found
in
5.69–5.78
eV
range
determined
Tauc's
plot.
symmetric
stretching
O–Si–O
440
cm−1,
Si–O
880
asymmetric
Si–O–Si
peaks
1062
cm−1
indicate
formation
polymorphic
NPs.
Electronic
chemical
states
investigated
X-ray
photoelectron
spectroscopy
(XPS),
bonding
SiOx
occurred
99.5
528.6
eV,
respectively.
Silicon
(Si)
concentration
observed
to
be
∼14.35
%,
∼18.88
∼21.25
∼9.5
estimated
core-level
XPS
analysis.
extracted
have
a
regular
spherical
shape
40
different
atomic
Si
samples
establishes
their
utilization
medical
industrial
applications.
Global
population
expansion
has
resulted
in
an
acute
demand
for
proliferated
food
production
and
distribution.
As
a
result
of
this
augmented
production,
the
agricultural
sector
become
key
waste
producer
too.
Huge
is
produced
annually
through
intense
farming,
cultivation,
harvesting,
industrial
processes.
Agricultural
wastes
are
classified
as
offcuts,
crop
residues,
wastes,
food-related
animal
wastes.
Incineration
produces
carbon
dioxide
smoke
which,
when
released
into
environment,
generates
heat
causes
global
warming
due
to
severe
air
pollution.
Therefore,
appropriate
attention
must
be
taken
decompose
using
management
strategy.
Agriculture
reclaimed
produce
enzymes,
biofuels,
vitamins,
antioxidants,
antibiotics,
feed,
other
useful
compounds.
Exploration
promising
non-renewable
resource
alternative
support
environmental
feasibility
address
increasing
energy
problem.
This
chapter
discusses
right
scientific
approaches
methodologies
raw
materials.
Furthermore,
we
discuss
numerous
methods
techniques
obtaining
valuable
outputs
products
from
sustainable
future.
International Journal of Nanoelectronics and Materials (IJNeaM),
Год журнала:
2024,
Номер
17(3), С. 327 - 332
Опубликована: Авг. 13, 2024
Silica
(SiO2)
plays
a
major
key
ingredient
in
producing
products
such
as
toothpaste,
ceramics,
and
paints,
to
name
few,
it
acts
stabilizing
agent,
filler
additive.
Due
its
excellent
properties,
the
use
of
high-purity
SiO2
industrial
applications
is
favourable.
Unfortunately,
expensive.
Tetraethyl
Orthosilicate
(TEOS)
an
example
precursor
that
costly
harmful,
yet
frequently
employed.
This
paper
provides
short
review
advantages
biowaste
materials
precursors
their
role
fillers
fabrication
superhydrophobic
coating.
Researchers
nowadays
are
attempting
lower
expense
employing
by
extracting
silica
from
using
many
methods
acid
leaching
alkali
treatment
this
option
highly
sustainable.
The
growth
agricultural
industries
exponential
due
increase
production.
Therefore,
one
ways
utilize
combatting
environmental
issues
regarding
excess
receding
pure
resources.
also
can
be
utilized
used
develop
coating,
providing
numerous
potential
applications.
