Silica
aerogels
are
ultralight
superinsulators
that
can
increase
the
efficiency
of
insulation
materials
up
to
three
times.
In
this
study,
hydrophobic
silica
were
synthesized
using
an
inexpensive
and
available
water-glass
precusor
at
ambient
pressure,
without
need
for
specific
equipment
sol-gel
method.
Formation
was
confirmed
FT-IR,
SEM,
TEM,
BET
BJH
methods.
Thermal
stability
hydrophilicity
investigated
by
TGA
contact
angle
measurement,
respectively.
Then,
composites
including
equal
amount
anti-corrosion
alkyd
resin-zinc
Chromate
containing
weight
percentages
0,
1,
5,
10,
20,
30,
40
50
prepared
from
aerogels.
The
thermal
conductivity
measured
in
liquid
state.
results
indicated
a
significant
decrease
increasing
percentage
aerogel.
composite
adherence
then
evaluated.
Composites
with
highest
aerogel
proper
according
standard
set
National
Gas
Company
Isfahan
province,
along
paint
thinner
dilution
colorless
cobalt
drier,
coated
on
aluminum
plates
thickness
1.2
mm
film
dry
study
showed
30%
B5
had
least
it
be
used
as
various
gas
industries.
Nanomaterials,
Год журнала:
2024,
Номер
14(5), С. 469 - 469
Опубликована: Март 4, 2024
Silica
aerogels
have
gained
much
interest
due
to
their
unique
properties,
such
as
being
the
lightest
solid
material,
having
small
pore
sizes,
high
porosity,
and
ultralow
thermal
conductivity.
Also,
advancements
in
synthesis
methods
enabled
creation
of
silica
aerogel-based
composites
combination
with
different
materials,
for
example,
polymers,
metals,
carbon-based
structures.
These
new
silica-based
materials
combine
properties
other
create
a
reinforced
architecture
significantly
valuable
uses
fields.
Therefore,
importance
has
been
emphasized
by
presenting
process,
composites,
numerous
applications,
offering
an
updated
background
further
research
this
interdisciplinary
domain.
Heliyon,
Год журнала:
2023,
Номер
10(1), С. e23102 - e23102
Опубликована: Дек. 1, 2023
Aerogels
are
unique
and
extremely
porous
substances
with
fascinating
characteristics
such
as
ultra-low
density,
extraordinary
surface
area,
excellent
thermal
insulation
capabilities.
Due
to
their
exceptional
features,
aerogels
have
attracted
significant
interest
from
various
fields,
including
energy,
environment,
aerospace,
biomedical
engineering.
This
review
paper
presents
an
overview
of
the
trailblazing
research
on
aerogels,
aiming
at
preparation,
characterization,
applications.
Various
methods
aerogel
synthesis,
sol-gel,
supercritical
drying,
discussed.
Additionally,
recent
progress
in
characterization
structures,
morphology,
porosity,
properties,
extensively
reviewed.
Finally,
aerogel's
utilizations
numerous
disciplines,
for
instance,
energy
storage,
insulation,
catalysis,
environmental
remedy,
applications,
summarized.
provides
a
comprehensive
understanding
prospective
uses
diverse
highlighting
properties
future
development.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(2), С. 1309 - 1309
Опубликована: Янв. 21, 2024
Aerogels
are
unique
solid-state
materials
composed
of
interconnected
3D
solid
networks
and
a
large
number
air-filled
pores.
This
structure
leads
to
extended
structural
characteristics
as
well
physicochemical
properties
the
nanoscale
building
blocks
macroscale,
integrated
typical
features
aerogels,
such
high
porosity,
surface
area,
low
density,
with
specific
various
constituents.
Due
their
combination
excellent
properties,
aerogels
attract
much
interest
in
applications,
ranging
from
medicine
construction.
In
recent
decades,
potential
was
exploited
many
aerogels’
materials,
either
organic,
inorganic
or
hybrid.
Considerable
research
efforts
years
have
been
devoted
development
aerogel-based
biosensors
encouraging
accomplishments
achieved.
this
work,
(2018–2023)
ground-breaking
advances
preparation,
classification,
sensing
applications
presented.
Different
types
which
play
fundamental
role
being
explored
collected
manuscript.
Moreover,
current
challenges
some
perspectives
for
high-performance
summarized.
Environmental Progress & Sustainable Energy,
Год журнала:
2024,
Номер
43(6)
Опубликована: Авг. 22, 2024
Abstract
Rice
husk
silica
(RHS)
has
emerged
as
a
sustainable
alternative
to
traditional
sources
of
in
various
applications,
offering
eco‐friendly
attributes,
cost‐effectiveness,
and
versatility.
This
review
explores
the
potential
RHS
substitute
for
conventional
sources,
highlighting
its
alignment
with
development
objectives
appeal
industries
seeking
environmental
responsibility.
Among
extraction
methods,
acid
leaching
is
identified
yielding
higher
purity
silica.
In
contrast,
among
novel
techniques,
hydrothermobaric
process
stands
out
producing
high
nanosilica.
Despite
challenges
like
limited
access
high‐quality
rice
husks
variations
content,
methods
show
promising
avenues
production,
addressing
waste
management,
concerns.
Further
optimization
techniques
are
essential
widespread
acceptance,
future
research
focusing
on
nanoparticle
synthesis
incorporating
green
chemistry
principles.
comprehensive
provides
valuable
resource
researchers
explore
alternatives
their
respective
fields,
aiming
foster
adopting
more
practices
materials
across
industries.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Март 23, 2024
In
this
study,
we
have
developed
novel
biomimetic
silica
composite
aerogels
and
cryogels
for
the
first
time,
drawing
inspiration
from
natural
diatom's
silicification
process.
Our
approach
involved
modification
of
tyrosinase-mediated
oxidized
silk
fibroin
(SFO)
surfaces
with
polyethyleneimine
(PEI).
This
introduced
ample
amine
groups
onto
SF
polymer,
which
catalyzed
SFO-PEI
gel
surface
silicic
acid.
process
emulates
catalytic
function
long-chain
polyamines
silaffin
proteins
found
in
diatoms,
resulting
a
network
structure
on
primary
gel's
surface.
The
matrix
played
dual
role
process:
(1)
It
provided
numerous
functional
that
directly
acid
porous
structure's
exterior
surface,
without
encapsulating
created
gel.
(2)
served
as
flexible
mechanical
support
facilitating
creation
network.
As
result,
final
ceramic
exhibits
mechanically
nature
(e.g.,
cyclic
compressibility
up
to
80%
strain),
distinguishing
it
conventional
aerogels.
By
mimicking
process,
were
able
simplify
development
silica-polymer
eliminates
need
surfactants,
multi-step
procedures
involving
solvent
exchange,
washing.
Instead,
reaction
occurs
under
mild
conditions,
streamlining
fabrication
