Diamond and Related Materials,
Journal Year:
2024,
Volume and Issue:
149, P. 111560 - 111560
Published: Sept. 2, 2024
Reduced
graphene
oxide
(rGO)
has
garnered
tremendous
attention
due
to
its
salient
properties
that
make
it
applicable
in
various
electrochemical
and
environmental
remediation
fields.
However,
the
commonly
used
chemical
method
obtain
rGO
from
(GO)
involves
toxic
chemicals
making
process
product
expensive.
In
present
work,
suitability
of
Avocado
(Persea
americana
Mill)
seed
extract
reduce
as-synthesized
GO
was
investigated
fully
by
optimising
reducing
parameters
such
as
pH,
temperature,
amount
reduction
time.
The
formation
confirmed
with
UV–Vis
spectrophotometry
(UV–Vis),
Fourier
Transform
Infrared
(FT-IR)
spectroscopy,
X-ray
diffraction
(XRD),
Transmission
Electron
Microscopy
(TEM)
thermogravimetric
analysis
(TGA).
optimal
conditions
for
avocado
are
pH
8,
100
°C,
12
h.
average
thickness
width
5.55
nm
11.39
accordingly.
While
exhibited
a
ζ
−31.3
mV,
reduced
possessed
−
48.6
mV.
Calculations
Kotouckey-Levich's
demonstrated
obtained
can
potentially
be
applied
an
oxygen
reaction
(ORR)
catalyst
generation
hydrogen
peroxide
since
follows
2e−
pathway
mechanism
where
is
generated
intermediate.
Additionally,
slight
growth
inhibition
methicillin
resistant
S.
aureus
(MRSA).
Environmental Chemistry Letters,
Journal Year:
2023,
Volume and Issue:
21(4), P. 2337 - 2398
Published: May 4, 2023
Access
to
drinkable
water
is
becoming
more
and
challenging
due
worldwide
pollution
the
cost
of
treatments.
Water
wastewater
treatment
by
adsorption
on
solid
materials
usually
cheap
effective
in
removing
contaminants,
yet
classical
adsorbents
are
not
sustainable
because
they
derived
from
fossil
fuels,
can
induce
secondary
pollution.
Therefore,
biological
sorbents
made
modern
biomass
increasingly
studied
as
promising
alternatives.
Indeed,
such
biosorbents
utilize
waste
that
would
otherwise
pollute
systems,
promote
circular
economy.
Here
we
review
biosorbents,
magnetic
sorbents,
other
cost-effective
with
emphasis
preparation
methods,
types,
mechanisms,
regeneration
spent
adsorbents.
Biosorbents
prepared
a
wide
range
materials,
including
wood,
bacteria,
algae,
herbaceous
agricultural
waste,
animal
waste.
Commonly
removed
contaminants
comprise
dyes,
heavy
metals,
radionuclides,
pharmaceuticals,
personal
care
products.
Preparation
methods
include
coprecipitation,
thermal
decomposition,
microwave
irradiation,
chemical
reduction,
micro-emulsion,
arc
discharge.
Adsorbents
be
classified
into
activated
carbon,
biochar,
lignocellulosic
clays,
zeolites,
peat,
humic
soils.
We
detail
isotherms
kinetics.
Regeneration
supercritical
fluid
desorption.
also
discuss
exhausted
adsorbent
management
disposal.
found
agro-waste
remove
up
68–100%
while
wooden,
herbaceous,
bacterial,
marine-based
55–99%
metals.
Animal
waste-based
1–99%
The
average
removal
efficiency
modified
around
90–95%,
but
some
treatments,
cross-linked
beads,
may
negatively
affect
their
efficiency.
Molecules,
Journal Year:
2023,
Volume and Issue:
28(3), P. 1081 - 1081
Published: Jan. 21, 2023
Dye
and
nitro-compound
pollution
has
become
a
significant
issue
worldwide.
The
adsorption
degradation
of
dyes
nitro-compounds
have
recently
important
areas
study.
Different
methods,
such
as
precipitation,
flocculation,
ultra-filtration,
ion
exchange,
coagulation,
electro-catalytic
been
adopted
for
the
these
organic
pollutants.
Apart
from
adsorption,
photocatalytic
degradation,
chemical
are
considered
most
economical
efficient
to
control
water
nitro-compounds.
In
this
review,
different
kinds
nitro-compounds,
their
adverse
effects
on
aquatic
organisms
human
beings,
were
summarized
in
depth.
This
review
article
covers
comprehensive
analysis
over
materials
(porous
polymer,
carbon-based
materials,
clay-based
layer
double
hydroxides,
metal-organic
frameworks,
biosorbents).
mechanism
kinetics
dye
central
parts
structures
all
mentioned
above
discussed,
along
with
main
functional
groups
responsible
adsorption.
Removal
also
aim
article,
well
used
degradation.
mechanisms
explained
comprehensively.
factors
highlighted.
Advantages
disadvantages,
economic
cost,
discussed
briefly.
will
be
beneficial
reader
it
aspects
Future
shortcomings
part
article.
There
several
articles
topics,
but
study
not
performed
so
far
literature.
Scientific Reports,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Nov. 27, 2022
Abstract
In
the
present
study,
a
green,
sustainable,
simple
and
low-cost
method
was
adopted
for
synthesis
of
ZnO
NPs,
first
time,
using
aqueous
extract
sea
lavender,
Limonium
pruinosum
(L.)
Chaz.,
as
reducing,
capping,
stabilizing
agent.
The
obtained
NPs
were
characterized
ultraviolet–visible
spectroscopy
(UV–VIS),
Fourier
transform
infrared
(FT-IR),
scanning
electron
microscopy
(SEM),
energy-dispersive
X-ray
analysis
(EDX),
transmission
(TEM),
diffraction
(XRD)
thermogravimetric
(TGA).
UV–Vis
spectra
green
synthesized
showed
strong
absorption
peak
at
about
370
nm.
Both
XRD
confirmed
hexagonal/cubic
crystalline
structure
with
an
average
size
~
41
It
is
worth
noting
that
cytotoxic
effect
on
investigated
cancer
cells
dose-dependent.
IC
50
skin
409.7
µg/ml
NPs.
Also,
phyto-synthesized
nanoparticles
exhibited
potent
antibacterial
antifungal
activity
particularly
against
Gram
negative
bacteria
Escherichia
coli
(ATCC
8739)
pathogenic
fungus
Candida
albicans
10221).
Furthermore,
they
considerable
antioxidant
potential.
Thus,
making
them
promising
biocompatible
candidate
pharmacological
therapeutic
applications.
Desalination and Water Treatment,
Journal Year:
2024,
Volume and Issue:
317, P. 100258 - 100258
Published: Jan. 1, 2024
The
global
challenges
of
clean
water
access
and
security
are
a
growing
concern,
along
with
wastewater
being
major
source
pollution.
Innovative
approaches
to
remediate
contaminants
needed.
However,
sustainable
development
requires
innovative
from
their
source.
In
the
last
decade,
extensive
research
has
been
conducted
worldwide
improve
conventional
technologies
for
treatment.
Recent
strategies
include
adsorption,
advanced
oxidation,
biodegradation,
membrane
filtration.
no
technology
can
effectively
remove
contaminants,
hybrid
systems
more
promising.
This
review
provides
comprehensive
overview
characteristics
organic
pollutants
degradation
using
various
physical,
chemical,
biological
strategies.
Indeed,
treatment
such
as
nanotechnology
artificial
intelligence
be
considered
planning
designing
modern
plants.
studies
have
indicated
that
compelling
than
single
enhancing
process
efficiency.
discussions
anticipated
lay
foundations
future
improvements
in
could
emerge
promising
minimize
toxicity
allow
safe
reuse
water.
Scientific Reports,
Journal Year:
2022,
Volume and Issue:
12(1)
Published: Nov. 12, 2022
Abstract
In
this
work,
the
synthesis
of
an
rGO/nZVI
composite
was
achieved
for
first
time
using
a
simple
and
green
procedure
via
Atriplex
halimus
leaves
extract
as
reducing
stabilizing
agent
to
uphold
chemistry
principles
such
less
hazardous
chemical
synthesis.
Several
tools
have
been
used
confirm
successful
SEM,
EDX,
XPS,
XRD,
FTIR,
zeta
potential
which
indicated
fabrication
composite.
The
novel
compared
with
pristine
nZVI
removal
aptitude
doxycycline
antibiotic
different
initial
concentrations
study
synergistic
effect
between
rGO
nZVI.
adsorptive
bare
90%
conditions
25
mg
L
−1
,
°C,
0.05
g,
whereas
by
reached
94.6%
confirming
rGO.
adsorption
process
followed
pseudo-second
order
well-fitted
Freundlich
models
maximum
capacity
31.61
g
at
°C
pH
7.
A
plausible
mechanism
DC
suggested.
Besides,
reusability
confirmed
having
efficacy
60%
after
six
successive
cycles
regeneration.
