South African Journal of Chemical Engineering,
Journal Year:
2023,
Volume and Issue:
46, P. 132 - 142
Published: July 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,
Journal Year:
2024,
Volume and Issue:
10, P. 100828 - 100828
Published: June 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,
Journal Year:
2024,
Volume and Issue:
9(23), P. 25251 - 25264
Published: May 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.
