Advances in chemical and materials engineering book series,
Год журнала:
2024,
Номер
unknown, С. 489 - 514
Опубликована: Окт. 22, 2024
In
this
chapter,
the
authors
discuss
nanomaterials
for
environmental
application
as
promising
technology
of
water
treatment,
air
purification,
and
remediation.
Water
contamination
remains
a
critical
issue
in
many
developing
nations,
including
African
countries.
Traditionally,
chlorine
has
been
employed
treatment;
however,
its
association
with
cancer
risks
raised
significant
health
concerns.
response
to
these
challenges,
have
emerged
innovative
solutions
remediation
due
their
unique
physicochemical
properties.
This
chapter
explores
recent
advancements
addressing
pollution.
author
discussion
attempts
provides
comprehensive
overview
nanomaterial
use
treatment
highlighting
effectiveness
overcoming
traditional
limitations
offering
sustainable
alternatives
improving
Molecules,
Год журнала:
2025,
Номер
30(3), С. 463 - 463
Опубликована: Янв. 21, 2025
Wellbore
instability
caused
by
the
invasion
of
drilling
fluids
into
formations
remains
a
significant
challenge
in
application
oil-based
(ODFs).
In
this
study,
carbon
nanospheres
(CNSs)
were
synthesized
using
glucose
as
source
through
microwave-assisted
method.
The
effects
reaction
temperature,
concentration,
and
time
on
particle
size
CNSs
systematically
investigated.
results
revealed
that
under
optimal
conditions,
with
an
average
670
nm
successfully
synthesized,
exhibiting
high
sphericity
excellent
dispersibility.
demonstrated
stable
dispersion
mineral
oil
when
lecithin
was
used
dispersant.
plugging
performance
ODFs
evaluated
low-pressure
filtration
high-temperature,
high-pressure
(HTHP)
tests.
After
aging
at
180
°C
for
16
h,
addition
2%
reduced
volume
from
10.6
mL
to
2.5
standard
filter
paper
(average
pore
size:
3
μm)
8.5
1.6
microporous
membranes
0.5
μm).
Additionally,
HTHP
decreased
73
18
mL,
permeability
cake
formed
during
26.5
×
10−3
mD
1.2
mD.
Furthermore,
improved
rheological
properties
emulsion
stability
ODFs.
With
compatibility
applicability,
offer
promising
solution
enhancing
fluids.
Biosensors,
Год журнала:
2025,
Номер
15(2), С. 99 - 99
Опубликована: Фев. 10, 2025
Carbon
quantum
dots
(CQDs),
a
new
class
of
carbon-based
nanomaterials,
have
emerged
as
nano-scaled
probes
with
photoluminescence
that
an
eco-friendly
and
bio-compatible
nature.
Their
cost-efficient
synthesis
high
yields
make
them
indispensable
due
to
their
application
in
opto-electronic
devices,
including
biosensors,
bioimaging,
environmental
monitoring,
light
sources.
This
review
provides
intrinsic
properties
CQDs
such
excitation-dependent
emission,
biocompatibility,
quenching
properties.
Diverse
strategies
for
easy
are
divided
into
bottom-up
top-down
approaches
detailed
herein.
In
particular,
we
highlight
luminescence
properties,
mechanisms
could
even
be
utilized
the
precise
rapid
detection
biomolecules.
We
also
discuss
methodologies
mitigation
fluorescence
quenching,
which
is
pivotal
biosensors
bioimaging.
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
32, С. 103419 - 103419
Опубликована: Окт. 31, 2023
Sustainable
development
goals
have
emphasized
the
need
to
focus
on
water
treatment
mitigate
ever-rising
demands
for
clean
water.
High
costs
and
energy
requirements
been
Achilles'
heel
of
most
technologies.
Herein,
we
develop
cheap
lignin-derived
sorbents
prepared
by
microwave
(MW)
acid
precipitation
(AP)
treatments
raw
lignin
(RL)
Rhodamine-B
(RhB)
adsorption
in
aqueous
solution.
Our
findings
evidence
micro-
mesoporous
structures,
with
irregular
grain
size.
X-ray
diffraction
revealed
an
amorphous
material,
while
Fourier-transform
infrared
analysis
points
presence
carboxyl,
hydroxyl
sulfite
functional
groups,
which
may
facilitate
dye.
Adsorption
isotherm
kinetic
data
describe
complex
pore-driven
interactions,
based
Sips,
D-R
intraparticle
diffusion
models,
considering
sum
squared
error
values
obtained
from
nonlinear
regression
analysis.
efficiency
∼97%
is
obtainable
at
optimal
conditions
treated
(3
g/L
sorbent
dose,
720
min
contact
time
under
acidic
pH
conditions).
Thermodynamic
studies
that
RL-RhB
MW-RhB
are
driven
physisorption
∆H°
values,
stronger
interactions
occurred
AP-RhB,
high
enthalpy
(∼49
kJ/mol)
capacity
(∼2766
mg/g).
Van
der
Waals
attraction,
π-π
stacking,
pore-filling
mechanisms
among
several
occur
between
RhB
sorbents.
offer
a
way
valorize
as
alternative
pathway
economically
viable
sustainable
purification.
Green
carbon-based
materials
(GCM),
i.e.
carbon
produced
using
renewable
biomass
or
recycled
wastes,
ought
to
be
used
in
order
processes
become
sustainable
and
neutral.
Carbon
nanomaterials,
like
for
example
dots
nanobichar
families,
materials,
activated
biochar
substances,
are
with
great
potential
different
technology
applications.
In
this
review,
the
following
four
applications
were
selected,
works
published
last
two
years
(since
2022)
critically
reviewed:
agriculture;
water
treatment;
energy
management;
and,
dioxide
reduction
sequestration.
GCM
improved
performance
of
technological
under
revision
play
an
important
role
sustainability
processes,
contributing
mitigation
climate
change,
namely
by
reducing
emission
increase
sequestration
CO2eq..
Current Microwave Chemistry,
Год журнала:
2024,
Номер
11(1), С. 58 - 60
Опубликована: Март 29, 2024
Abstract:
Microwave-assisted
synthesis
has
faced
challenges
in
implementing
its
use
at
the
in-dustrial
level
recent
decades,
including
scaling
up
processes.
While
microwave-assisted
is
established
on
a
laboratory
scale,
there
are
some
drawbacks
associated
with
it,
in-cluding
equipment
and
operational
costs
of
specialized
microwave
reactors,
safety
con-cerns
due
to
high
temperatures
pressures,
reaction
selectivity,
capacity
control
rapid
heating
cooling
rates
kinetics
reactions,
optimization
re-producibility
results.
This
manuscript
discusses
relevant
news
last
ten
years
about
application
industrial
reactors
for
producing
chemicals
level.
