Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Июнь 10, 2023
Abstract
LaFeO
3
/biochar
composite
is
prepared
by
cellulose-modified
microwave-assisted
method
at
450
°C.
The
structure
identified
Raman
spectrum
which,
consists
of
characteristics
biochar
bands
and
octahedral
perovskite
chemical
shifts.
morphology
examined
scanning
electron
microscope
(SEM);
two
phases
are
observed,
rough
microporous
orthorhombic
particles.
BET
surface
area
the
57.63
m
2
/g.
applied
as
a
sorbent
for
removal
Pb
2+
,
Cd
Cu
ions
from
aqueous
solutions
wastewater.
adsorption
ability
reaches
maximum
pH
>
6
ions,
pH-independent
adsorption.
follows
pseudo
2nd
order
kinetic
model,
Langmuir
isotherm
Temkin
isotherms
ions.
capacities,
q
606,
391,
112
mg/g
respectively.
electrostatic
interaction
responsible
on
composite.
In
case
form
complex
with
functional
groups
adsorbate.
shows
high
selectivity
studied
metal
excellent
performance
in
real
samples.
proposed
can
be
easily
regenerated
effectively
reused.
RSC Advances,
Год журнала:
2023,
Номер
13(29), С. 20150 - 20163
Опубликована: Янв. 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.
Abstract
Environmental
contamination
by
hexavalent
chromium
(Cr(VI))
and
antibiotic
drug
residues
pose
significant
challenges
to
public
health
ecosystems.
This
study
investigates
the
application
of
CoTiO
3
/BiVO
4
@MIL-Fe(53)
(CT/BV@Fe-MOF)
for
reduction
Cr(VI)
degradation
tetracycline
(TCL)
under
visible
light.
After
grafting
an
iron-based
metal–organic
framework
MIL-Fe(53)
on
a
modified
composite,
photogenerated
electrons
could
easily
be
transferred
from
BiVO
/Fe-MOF
species
via
interfacial
charge
transfer.
UV–vis
diffuse
reflectance
spectroscopy
showed
that
carriers
were
formed
in
response
light
absorption.
The
effect
different
operating
parameters,
including
catalyst
load,
pH,
initial
Cr(VI),
TCL
concentration,
was
systematically
evaluated
during
photocatalytic
process.
CT/BV@Fe-MOF
composite
exhibited
98.7%
efficiency
(50
ppm)
97.5%
towards
(30
within
90
min,
resulting
greater
than
pristine
,
Fe-MOF
materials.
displayed
excellent
stability
over
six
cycles,
highlighting
its
potential
practical
applications.
In
addition,
plausible
pathway
using
LC-ESI/MS
analysis,
while
TEST
program
utilized
investigate
toxicity
products
generated
Molecules,
Год журнала:
2023,
Номер
28(7), С. 2983 - 2983
Опубликована: Март 27, 2023
As
a
substitute
for
banned
brominated
flame
retardants
(BFRs),
the
use
of
organophosphate
esters
(OPEs)
increased
year
by
with
increase
in
industrial
production
and
living
demand.
It
was
inevitable
that
OPEs
would
be
discharged
into
wastewater
excess,
which
posed
great
threat
to
health
human
beings
aquatic
organisms.
In
past
few
decades,
people
used
various
methods
remove
refractory
OPEs.
This
paper
reviewed
photocatalysis
method,
adsorption
method
wide
applicability,
biological
mainly
relying
on
enzymolysis
hydrolysis
degrade
water.
All
three
these
had
advantages
high
removal
efficiency
environmental
protection
organic
pollutants.
The
degradation
OPEs,
mechanisms,
conversion
products
were
discussed
summarized.
Finally,
development
prospects
challenges
OPEs’
technology
discussed.
Journal of Water Process Engineering,
Год журнала:
2023,
Номер
54, С. 104045 - 104045
Опубликована: Июль 15, 2023
Bismuth
tungstate-graphitic
carbon
nitride
(BWO/g-C3N4)
heterojunction
composites
were
synthesized
by
wet-impregnation
of
bulk
g-C3N4
nanosheet
with
octahedron-shaped
BWO,
characterized
and
investigated
for
their
photocatalytic
capacity
in
the
oxidative
degradation
ibuprofen,
under
visible
light
irradiation.
The
characterization
was
done
using
X-ray
diffraction,
UV–Vis
diffuse
reflectance
spectroscopy,
transmission
electron
microscopy,
high-resolution
microscopy
equipped
EDS,
photoluminescence
N2
adsorption-desorption
analysis,
thermogravimetric
analysis.
different
masses
BWO/g-C3N4
showed
superior
performance
compared
to
pure
BWO
nanoparticles.
photodegradation
efficiency
7
wt%
composite
ibuprofen
94.80
%,
which
is
about
5
6
folds
higher
than
those
nanoparticles
nanosheets,
respectively.
enhancement
may
be
due
energy-lowering
effect
resulting
from
reduced
bandgap
2.43
eV,
caused
coupling
g-C3N4.
improved
surface
area
46.15
m2/g
facilitates
effective
charge
separation
photogenerated
electron-hole
pairs
composites.
Active
species
trapping
experiments
that
•OH
h+
reactive
main
radicals
involved
catalytic
process
ibuprofen.
A
67.20
%
achieved
when
tested
practical
application
wastewater
samples.
