Comptes Rendus Chimie,
Journal Year:
2024,
Volume and Issue:
28(G1), P. 79 - 93
Published: Dec. 12, 2024
In
this
study,
a
porous
adsorbent
was
synthesized
hydrothermally
from
molar
composition
gel
of
10Na2O:Al2O3:100SiO2:2000H2O:20TPABr.
X-ray
diffraction
confirmed
the
presence
ZSM-12
zeolite
phase,
and
nitrogen
adsorption
analysis
revealed
Brunauer–Emmett–Teller
specific
surface
area
343.7
m2/g
for
material.
The
then
used
recovery
uranium(VI)
aqueous
solutions
with
initial
uranium
concentrations
10
150
mg/L.
Operating
parameters
such
as
pH,
contact
time,
solid/liquid
ratio,
temperature
were
systematically
investigated.
optimum
conditions
found
to
be
consistent
both
concentrations,
pH
value
3,
time
60
min,
20
°C.
However,
ratio
varied
5
g/L
mg/L
concentration
8
concentration.
Langmuir
isotherm
well
matched
by
ZSM-12,
its
kinetics
pseudo-second-order
model.
uranyl
ions
material
is
spontaneous,
chemisorption
physisorption
processes
occur
simultaneously
during
adsorption.
thermodynamic
indicate
that
U(VI)
on
exothermic.
negative
ΔS°
indicates
system
disorder
randomness
decrease
proceeds
liquid
phase
adsorbate
components
are
immobilized
Dans
cette
étude,
un
adsorbant
poreux
est
synthétisé
par
voie
hydrothermale
à
partir
d'un
de
molaire
suivante
La
DRX
confirmé
la
présence
et
l'analyse
BET
révélé
une
spécifique
m2/g.
zéolithe
utilisée
dans
récupération
l'uranium(VI)
aqueuses
ayant
des
initiales
Les
paramètres
opératoires
tels
que
le
temps
contact,
rapport
solide/liquide
température
étaient
systématiquement
étudiés.
optimales
se
sont
révélées
cohérentes
pour
les
deux
:
min
Cependant,
l'étude
du
initiale
L'étude
cinétique
montré
excellente
corrélation
avec
modèle
pseudo-deuxième
ordre.
L'adsorption
uranyle
matériau
spontanée,
processus
chimisorption
ont
lieu
en
même
temps.
thermodynamique
l'adsorption
l'U(VI)
sur
exothermique.
valeur
négative
indique
désordre
caractère
aléatoire
système
diminuent
au
fur
mesure
progresse
composants
l'adsorbat
liquide
immobilisés
adsorbant.
Results in Surfaces and Interfaces,
Journal Year:
2024,
Volume and Issue:
15, P. 100225 - 100225
Published: May 1, 2024
Graphene
oxide
(GO),
a
2-dimensional
(2-D)
monolayer
of
graphite,
has
drawn
lot
importance
due
to
its
accessibility
and
material
compatibility.
It
can
be
produced
by
mechanically
stirring
or
sonicating
graphite
exfoliate
it
into
layered
sheets.
Due
high
stability,
2-D
planar
structure,
huge
surface
area,
easy
chemical
adaptation
via
functionalities,
efficient
loading
with
many
biomolecules,
optical,
electrical,
mechanical
capabilities,
GO
derivatives
are
quickly
emerging
as
the
most
intensely
studied
carbon-based
materials
in
number
fields.
In
this
review,
we
provided
thorough
overview
GO,
synthesis
pristine
GO-based
composites
well
their
applications
field
biodiesel
synthesis,
adsorption,
photodegradation,
electrochemical
along
biological
significance
antimicrobial
efficiency.
Owing
distinctive
features,
garnered
interest
realm
catalyst.
The
process
transesterification
using
supported
catalyst
is
highlighted
herein.
Similarly,
adsorption
photodegradation
several
organic
dyes
effluents
also
discussed
article.
Finally,
derived
relation
attractive
trends
highlighting
future
scope
commercial
implications.
ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
4(2), P. 325 - 345
Published: Jan. 5, 2024
The
sustainable
energy
supply
to
the
global
community
remains
a
great
challenge
due
mounting
incessant
demand
and
environmental
concerns
associated
with
fossil
fuel-based
energy.
As
per
International
Atomic
Energy
Agency
(IAEA),
nuclear
power
will
be
only
reliable
source
in
future,
there
high
for
uranium
(U).
Therefore,
exploitation
of
U
from
seawater
is
essential
thousands
years
globally.
Herein,
we
discuss
some
key
developments
on
design
application
potential
sorbents
effective
extraction
(UES)
under
different
experimental
conditions.
Specifically,
focus
synthesis,
characterization,
a)
organic
(metal–organic
frameworks
(MOFs),
covalent
(COFs),
membranes,
hydrogels)
b)
inorganic
substrate
(graphene
silica)
based
composite
sorbents.
Later,
selected
studies
encompassing
mechanistic
understating
efficient
UES
using
through
various
analytical
theoretical/computational
approaches.
Finally,
present
future
challenges
that
need
addressed
compatible
exceptional
properties
UES.
We
believe
this
paper
can
expand
our
understanding
suitable
selective
Advances in Colloid and Interface Science,
Journal Year:
2024,
Volume and Issue:
335, P. 103338 - 103338
Published: Nov. 14, 2024
Efficient
removal
of
heavy
metals
and
other
toxic
metal
pollutants
from
wastewater
is
essential
to
protect
human
health
the
surrounding
vulnerable
ecosystems.
Therefore,
significant
efforts
have
been
invested
in
developing
practical
sustainable
tools
address
this
issue,
including
high-performance
adsorbents.
In
respect,
within
last
few
years,
graphene-based
aerogels/xerogels/cryogels
(GBAs)
emerged
drawn
attention
as
excellent
materials
for
removing
recovering
harmful
valuable
different
aqueous
media.
Such
an
upward
trend
mainly
due
features
aerogel
combined
with
properties
graphene
derivatives
aerogel's
network,
GBAs'
unique
three-dimensional
(3D)
porous
structure,
high
porosity,
low
density,
large
specific
surface
area,
exceptional
electron
mobility,
adjustable
rich
chemistry,
remarkable
mechanical
features,
tremendous
stability.
This
review
offers
a
comprehensive
analysis
fundamental
aspects
phenomena
related
application
GBAs
removal.
Herein,
we
cover
all
types
(bottom-up)
synthesized
GBAs,
true
microporous
aerogels
well
3D
open-cell
interconnected
mesoporous
macroporous
aerogels,
foams,
sponges.
Indeed,
provide
insights
into
understanding
suitability
such
important
by
revealing
mechanisms
involved
factors
inducing
controlling
highly
selective
behavior
these
distinctive
Besides
conventional
adsorptive
pathways,
critically
analyzed
ability
electrochemically
capture
(i.e.,
electrosorption)
their
efficiency
detoxification
through
reductive
adsorption-reduction-readsorption).
We
also
covered
reusability
aspect
(GAs)-based
adsorbents,
which
strongly
linked
outstanding
stability
efficient
desorption
captured
metals.
Furthermore,
view
numerous
environmental
benefits,
development
magnetically
recoverable
GAs
highlighted.
Moreover,
shed
light
on
potential
scalable
implementation
evaluating
performance
continuous
processes
while
highlighting
versatility
demonstrated
remove
multiple
contaminants
along
Finally,
provides
readers
accessible
overview
critical
discussion
major
recent
achievements
regarding
applications
GAs-based
adsorbents
ions
Along
our
recommendations
suggestions
future
work
new
research
directions
opportunities,
aims
serve
resource
researchers
field
treatment
inspire
further
progress
towards
next-generation
expanding
application.
