Arabian Journal of Chemistry,
Journal Year:
2023,
Volume and Issue:
16(10), P. 105145 - 105145
Published: July 11, 2023
Santa
Barbara
Amorphous-15
(SBA-15)
is
a
mesoporous
molecular
sieve
with
large
surface
area
and
extensively
applied
in
purification,
separation,
catalytic
procedures.
In
this
study,
an
SBA-15
was
prepared
from
sodium
silicate
precursor,
pentaethylene
hexamine
anchored
to
its
surface.
A
composite
named
N-SBA-15
characterized
using
several
experimental
techniques.
FTIR
XPS
measurements
confirmed
that
amino
groups
were
conjugated
on
the
of
SBA-15.
XRD
TEM
comprised
highly
ordered,
hexagonal
mesopore
structures,
which
not
destroyed
by
addition
groups.
After
functionalization,
area,
pore
volume,
size
188
m2/g,
0.303
cm3/g,
5.0
nm,
respectively.
adsorption
aromatic
acids,
namely
tannic
acid
(TA),
red
1
(AR-1),
blue
40
(AB-40).
The
influence
various
conditions
such
as
dye
concentration,
adsorbent
dosage,
solution
pH,
temperature
investigated.
For
AB-40
dye,
exhibited
times
higher
capacity
than
pure
highest
capacities
for
TA,
AB-40,
AR-1
869,
818,
308
mg/g,
Thermodynamic
studies
conducted
evaluate
exothermic
property
process
spontaneous
behavior.
adsorptive
data
fitted
well
pseudo-second-order
Langmuir
isotherm
models.
Results
amino-modified
material
promising
elimination
acids
form
aqueous
solution.
RSC Advances,
Journal Year:
2023,
Volume and Issue:
13(29), P. 20150 - 20163
Published: Jan. 1, 2023
A
facile
chemical
procedure
was
utilized
to
produce
an
effective
peroxy-monosulfate
(PMS)
activator,
namely
ZnCo2O4/alginate.
To
enhance
the
degradation
efficiency
of
Rhodamine
B
(RhB),
a
novel
response
surface
methodology
(RSM)
based
on
Box-Behnken
Design
(BBD)
method
employed.
Physical
and
properties
each
catalyst
(ZnCo2O4
ZnCo2O4/alginate)
were
characterized
using
several
techniques,
such
as
FTIR,
TGA,
XRD,
SEM,
TEM.
By
employing
BBD-RSM
with
quadratic
statistical
model
ANOVA
analysis,
optimal
conditions
for
RhB
decomposition
mathematically
determined,
four
parameters
including
dose,
PMS
concentration,
reaction
time.
The
achieved
at
dose
1
g
l-1,
dye
concentration
25
mg
time
40
min,
efficacy
98%.
ZnCo2O4/alginate
displayed
remarkable
stability
reusability,
demonstrated
by
recycling
tests.
Additionally,
quenching
tests
confirmed
that
SO4˙-/OH˙
radicals
played
crucial
role
in
process.
npj Clean Water,
Journal Year:
2024,
Volume and Issue:
7(1)
Published: Jan. 6, 2024
Abstract
This
study
presents
the
preparation
of
SiO
2
/g-C
3
N
5
@NiFe
O
4
nanophotocatalyst
for
removal
betamethasone
from
aqueous
solutions.
The
was
synthesized
using
solvothermal
method,
and
its
structure
optical
properties
were
characterized
confirmed
through
XRD,
FESEM,
EDX,
DRS,
BET,
VSM
PL
analysis.
Photocatalytic
optimized
a
central
composite
design.
band
gap
pure
g-C
,
NiFe
obtained
2.4
eV,
2.7
1.4
respectively
Tauc
plot.
F
-value
909.88
Lack
Fit
0.41
confirm
model
is
significant.
Also,
value
R
=
0.9988
along
with
adja
09977
demonstrates
excellent
performance.
Maximum
efficiency
approximately
87.15%
under
following
optimal
conditions:
dosage
0.005
g/50
mL,
concentration
20
mg/L,
an
irradiation
time
40
min
visible
light.
performance
closely
aligns
actual
80.65%.
In
conclusion,
photocatalytic
ability
Green Processing and Synthesis,
Journal Year:
2023,
Volume and Issue:
12(1)
Published: Jan. 1, 2023
Abstract
Zr-metal-organic
frameworks
(Zr-MOFs)
were
prepared
by
a
solvothermal
method
and
characterized
X-ray
diffraction,
scanning
electron
microscopy,
thermogravimetry.
Zr-MOFs
used
to
remove
doxycycline
hydrochloride
(DOC)
from
wastewater.
According
the
experimental
results,
maximum
adsorption
capacity
of
DOC
within
5
h
was
148.7
mg·g
−1
.
From
pseudo-second-order
kinetics
model,
all
R
2
values
greater
than
0.99,
which
proved
that
consistent
with
practice.
Freundlich
isotherm
proceeded
via
multilayer
adsorption.
The
aforementioned
results
show
have
good
application
prospects
for
removing
