Jurnal Teknik Kimia USU,
Год журнала:
2023,
Номер
12(2), С. 124 - 131
Опубликована: Сен. 28, 2023
Fly
ash
has
the
potential
to
be
used
as
a
raw
material
in
production
of
silica
gel.
This
study
aims
characterize
fly
and
gel,
determine
effect
NaOH
concentration
aging
time
on
manufacture
trapping
power
In
this
research,
gel
begins
with
washing
using
HCl.
Next,
is
added
varying
concentrations
1.5
N,
2.5
3.5
4.5
N.
The
formed
Na2SiO3
then
mixed
H2SO4
3
N
concentration,
times
12
hours,
15
18
hours.
highest
yield
49.61%
at
an
water
vapor
adsorption
capacity
883.00
mg/g
SEM-EDX
characterization
results
indicate
diverse
morphology
size
for
both
SiO2
content
41.64%,
while
it
41.42%.
FTIR
reveals
presence
functional
groups
such
silanol
(Si-O),
siloxane
(Si-O-Si),
hydroxyl
(Si-OH)
which
are
active
sites
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 101971 - 101971
Опубликована: Март 12, 2024
Green
synthesis
of
magnetic
gamma
alumina
nanoparticles
(MGAl-NPs)
for
heavy
metal
adsorption:
A
novel
approach
wastewater
treatment.
This
study
investigates
the
potential
magnetically
modified
removing
copper
(II)
ions
from
aqueous
solutions.
The
MGAl-NPs
involves
mixture
aluminum
hydroxide
and
iron
oxide,
resulting
in
a
composite
material
with
both
adsorptive
properties.
adsorption
capacity
was
found
to
be
34.48
mg/g
at
optimal
conditions
pH
5.0,
initial
concentration
50
mg/L,
adsorbent
dosage
0.1
g.The
kinetics
followed
pseudo-second-order
model,
indicating
that
chemisorption
dominant
mechanism.
Langmuir
isotherm
model
best
described
data
an
R2
value
0.995,
suggesting
occurred
through
monolayer
coverage.
efficiency
increased
decreasing
pH,
confirming
electrostatic
attraction
played
significant
role
adsorption.Our
findings
demonstrate
green
is
effective
eco-friendly
method
metals
wastewater.
properties
enable
easy
separation
recovery
adsorbed
metals,
making
them
promising
candidate
practical
applications.
provides
valuable
insights
into
developing
sustainable
adsorbents
water
pollution
remediation.
Environmental Technology & Innovation,
Год журнала:
2024,
Номер
34, С. 103628 - 103628
Опубликована: Апрель 9, 2024
This
study
introduces
a
novel
method
for
producing
magnetic
hybrid
alumina
nanoparticles
phase
(MHAl-NPsP)
tailored
specifically
efficient
copper
(II)
ion
removal
from
wastewater.
The
synthesized
MHAl-NPsP
underwent
comprehensive
characterization,
including
Fourier
transform
infrared
spectroscopy
(FTIR),
scanning
electron
microscopy
(SEM)
revealing
its
rough
and
porous
surface
morphology,
X-ray
diffraction
(XRD)
analysis,
transmission
(TEM)
BET
analysis
area
measurements,
TGA
confirming
high
thermal
stability,
vibrating
sample
magnetometry
(VSM)
successful
synthesis
through
detection
of
properties,
Photoelectron
Spectroscopy
(XPS)
analysis.
Remarkably,
demonstrated
an
exceptional
adsorption
capacity
52.5
mg/g
under
optimized
conditions
pH
3.5
initial
concentration
30
mg/L,
surpassing
previous
results
significantly.
Detailed
investigation
into
kinetics
revealed
pseudo-second-order
model,
suggesting
predominant
chemisorption
mechanism.
Moreover,
using
the
Langmuir
isotherm
model
showed
excellent
fitting
with
R²
value
0.994,
indicating
monolayer
coverage
as
primary
mode.
Notably,
dependency
studies
indicated
enhanced
efficiency
decreasing
levels,
highlighting
significant
role
electrostatic
interactions.
underscores
effectiveness
environmental
sustainability
green
approach
employed
MHAl-NPsP.
Utilizing
their
facilitate
easy
separation
retrieval
adsorbed
ions,
making
them
highly
promising
practical
applications
in
wastewater
treatment.
findings
advocate
development
eco-friendly
adsorbents
to
tackle
water
pollution
challenges,
providing
solutions
sustainable
remediation.
Abstract
The
novel
and
exciting
class
of
porphyrin‐based
compounds
are
the
main
group
coordination‐driven
porphyrins
(MGCPs)
with
a
central
element
into
porphyrin
macrocycle.
MGCPs
have
unique
properties,
reactivity,
potential
applications
in
catalysis,
sensing,
biomedicine
etc.
This
comprehensive
review
article
discusses
recent
advances
field
coordination
driven
explores
some
its
uses
solar
cells,
antimicrobial,
optoelectronic
devices,
catalysis.
addition
elements
to
systems
has
resulted
production
entirely
that
intriguing
qualities
including
increased
stability
catalytic
activity.
Significant
modifications
these
features
apparent
through
analysis
their
structural
properties.
It
encompasses
FTIR,
proton
NMR,
electrical
optical
characterisation
an
electrochemical
those
parameters.
They
serve
as
significant
building
blocks
for
creation
cutting‐edge
materials
technologies
variety
scientific
technical
disciplines
because
special
adaptability.
Researchers
working
domains
chemistry,
science
will
find
this
study
be
interest
since
it
offers
thorough
examination
current
developments
prospective
applications.
Overall,
used
many
different
fields,
such
devices.
Desalination and Water Treatment,
Год журнала:
2024,
Номер
320, С. 100589 - 100589
Опубликована: Июль 9, 2024
A
composite
nanomaterial
comprising
of
bismuth
molybdate
and
copper-based
MOFs
(BCuM)
was
obtained
by
a
facile
hydrothermal
technique
applied
as
nano-adsorbent
for
the
decontamination
wastewater
with
tetracycline
(TC).
The
nanosorbents'
internal
elemental
constitution,
surface
morphologic
features
crystallite
structure
were
analysed
using
EDS,
SEM
XRD
techniques.
As
can
be
seen
from
kinetics
adsorption,
dominating
forces
adsorption
are
chemisorption.
At
323
K,
total
sorption
in
accordance
Langmuir
isotherm
reaching
354.610
mg/g.
results
thermodynamic
analysis
desorption
reaction
indicate
that
TC
through
BCuM
occurs
spontaneously
is
related
to
an
intrinsic
heat
absorption
process.
findings
indicated
adsorbent
showed
excellent
over
pH
range
3
∼
8
good
reusability.
Fourier
Transform
Infrared
(FT-IR)
spectroscopy
shows
this
mainly
function
π-π
bonds
present
system
sorbent
polluting
substance.
Composite
Copper
based
MOF
demonstrated
superior
properties
wider
application
prospects
treating
sewage
comparison
single
nanomaterials.
Environmental Science and Pollution Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 5, 2025
Abstract
Two
novel
silica-based
hybrid
materials,
M1
and
M2
,
based
on
silica
gel
MCM-41
with
a
ditopic
triazole-pyrazole
ligand
grafted
onto
their
surfaces,
respectively,
were
successfully
synthesized
fully
characterized.
The
adsorption
capacity
of
these
organic–inorganic
materials
was
evaluated
for
copper(II),
cadmium(II),
lead(II)
ions.
Experimental
parameters
including
solution
pH,
contact
time,
temperature,
adsorbate
concentration
systematically
investigated.
obtained
experimental
data
analyzed
using
diverse
isotherms
models
to
assess
interpret
the
behavior
adsorbents.
Notably,
newly
exhibited
exceptional
selectivity,
ultra-rapid
rates
within
first
few
minutes,
high
removal
efficiencies
81.40
121.26
mg/g
towards
Cd(II).
Moreover,
reusability
assessments
demonstrated
excellent
consistency,
only
marginal
decreases
in
capacities
less
than
8%
observed
over
five
consecutive
cycles.
Interestingly,
application
extraction
transition
metals
from
real
contaminated
river
water,
Nador
city
Morocco,
showcased
effectiveness
removing
heavy
metal
ions
even
at
low
concentrations,
achieving
up
67%
cadmium
removal.
These
findings
highlight
potential
both
as
reliable
systems
practical
environmental
remediation
applications,
material
demonstrating
superior
performance
.
Graphical
abstract
Molecules,
Год журнала:
2025,
Номер
30(10), С. 2238 - 2238
Опубликована: Май 21, 2025
Porphyrins
and
their
derivatives
are
excellent
materials
with
specific
physical
photochemical
properties
in
medical,
chemical,
technological
applications.
In
chemistry,
applied
to
create
new
functional
characteristics,
such
as
porphyrin-based
sorbents
combined
porous
organic
polymers,
silica,
carbon
nanostructures,
or
metal–organic
frameworks.
This
review
covers
the
applications
of
porphyrins
metalloporphyrins
preparing
using
for
metal
ion
enrichment
separation.
Uncommon
that
utilize
porphyrins,
light-enhanced
processes
redox
selective
sorption
photocatalytic
conversion
ions,
also
discussed.
These
suggest
fields
use,
removal
recycling
metals
from
electronic
waste
elimination
heavy
environment.
