South African Journal of Chemical Engineering,
Год журнала:
2023,
Номер
46, С. 132 - 142
Опубликована: Июль 20, 2023
Ternary
composites
comprised
of
graphene
oxide
(GO),
ZIF-8,
and
HKUST-1
with
varying
amounts
GO
were
successfully
synthesized
via
the
solvothermal
method.
Based
on
photoluminescence
characterization,
GO/ZIF-8/HKUST-1
composite
presents
a
more
efficient
charge
carrier
separation
transfer
compared
to
pristine
ZIF-8.
As
result,
electron-hole
recombination
was
hindered
due
presence
as
an
electron
mediator
in
heterojunction.
The
dark
adsorption
kinetics
data
for
removal
congo
red
(CR)
dye
fit
well
pseudo-second
order
model.
photocatalytic
degradation
performance
investigated
by
means
degrading
CR
under
UV-LED
irradiation.
photodegradation
efficiency
GO(10)/ZIF-8/HKUST-1
91.81%
within
60
minutes
trapping
experiments
showed
that
hydroxyl
superoxide
radicals
are
main
reactive
species.
results
this
study
indicate
ternary
MOFs
photocatalysts
have
great
potential
pollutants
aquatic
environments.
Case Studies in Chemical and Environmental Engineering,
Год журнала:
2024,
Номер
10, С. 100828 - 100828
Опубликована: Июнь 27, 2024
A
series
of
bimetallic
metal-organic
frameworks
(MOFs)
photocatalysts
had
been
successfully
synthesized
by
doping
nickel
(Ni)
into
zeolitic
imidazolate
framework-8
(ZIF-8)
for
enhanced
photodegradation
methylene
blue
(MB).
Optical
characterization
revealed
that
the
Ni-ZIF-8
composites
possessed
a
narrower
bandgap
and
lower
recombination
rate
charge
carriers
than
pristine
ZIF-8.
The
Ni(20)-ZIF-8
composite
showed
highest
MB
efficiency
up
to
93.22
%
in
150
min,
with
use
30
mg
photocatalyst,
50
mL
mg/L
solution,
neutral
pH.
scavenger
test
clearly
proved
h+
•OH
were
main
active
species.
ACS Omega,
Год журнала:
2024,
Номер
9(23), С. 25251 - 25264
Опубликована: Май 28, 2024
Sugar
cane
bagasse
(SB)
was
modified
with
cetyltrimethylammonium
bromide
(CTAB),
followed
by
impregnation
zinc
oxide
(ZnO)
to
create
a
synergistic
adsorption
and
photocatalytic
system
for
methyl
orange
(MO)
methylene
blue
(MB)
removal.
The
presence
of
CTAB
ZnO
confirmed
X-ray
diffraction,
Fourier
transform
infrared,
energy
dispersive
(for
Zn
O).
Modification
SB
(CSB)
generated
more
positive
sites
on
the
surface
SB,
which
enhanced
MO
removal
compared
that
pristine
SB.
induces
decrease
in
due
CSB
surface,
might
reduce
CSB.
In
addition,
can
interact
Zn2+
O2–
form
lead
contrast,
facilitated
good
MB
CSB,
indicating
process
plays
greater
role
removing
MB.
However,
addition
H2O2
improve
under
irradiation
formation
external
•OH.
performance
also
observed
be
favored
acidic
alkaline
conditions,
respectively.
Green Chemistry,
Год журнала:
2023,
Номер
26(3), С. 1443 - 1453
Опубликована: Дек. 8, 2023
Copper
nanoparticles
deposited
on
the
surface
of
TiO
2
with
dominant
(101)
facet
exposure
show
an
exaggerated
enhancement
in
ammonia
production
compared
to
(001)
exposure.
Case Studies in Chemical and Environmental Engineering,
Год журнала:
2024,
Номер
9, С. 100719 - 100719
Опубликована: Апрель 18, 2024
In
this
study,
the
generation
of
1D
TiO2
nanowires
was
controlled
by
introducing
NH4OH
in
a
one-step
hydrothermal
method.
The
increasing
amount
reduced
width
resulting
nanowires,
revealing
that
altered
morphologies
synthesized
nanowires.
NTW20
showed
best
photoreduction
performance
since
had
smaller
widths,
large
surface
area
and
more
efficient
redox
reaction
on
surface.
comparison,
absence
photocatalyst
yielded
low
activity
5.7
%,
indicating
an
excellent
photocatalysis
reactions.
