Effect of the Dimethylformamide/Isopropanol Solvent Ratio on the Structure, Optical Properties, and Photodegradation Performance of RhB Using Bi-MOF
BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS,
Journal Year:
2025,
Volume and Issue:
20(1), P. 166 - 176
Published: Feb. 21, 2025
This
study
investigated
the
structural
characteristics,
surface
morphology,
and
photocatalytic
activity
of
bismuth-based
metal-organic
frameworks
(BiBTC-ISOx)
synthesized
with
varying
ratios
N,
N-dimethylformamide
(DMF)
isopropanol
(ISO).
X-ray
diffraction
confirmed
crystalline
structure
BiBTC-ISOx
(x
=
1,
3,
6)
compounds,
while
FTIR
spectroscopy
verified
successful
bonding
between
ligand
Bi3+
complex.
UV-Vis
revealed
strong
UV
light
absorption
tunable
bandgaps
ranging
from
3.28
to
3.68
eV.
Nitrogen
adsorption/desorption
analysis
a
hierarchical
micro/mesoporous
structure,
BiBTC-ISO6
exhibiting
highest
area
(24.968
m2/g).
SEM
imaging
rectangular
rod-like
which
became
more
elongated
increasing
ISO
content.
The
was
evaluated
based
on
degradation
Rhodamine
B
(RhB)
under
visible
light,
demonstrating
efficiency.
Optimal
conditions
for
RhB
were
determined
be
0.03
g
catalyst
mass,
10
ppm
concentration,
pH
3.
Mechanistic
studies
that
superoxide
radicals
are
primary
active
species
in
process.
exhibited
excellent
stability
reusability
over
three
consecutive
cycles,
highlighting
its
potential
practical
applications
organic
dye
removal.
Copyright
©
2025
by
Authors,
Published
BCREC
Publishing
Group.
is
an
open
access
article
CC
BY-SA
License
(https://creativecommons.org/licenses/by-sa/4.0).
Language: Английский
Silver nanoparticle-decorated nanorod bismuth based -organic framework/graphitic carbon nitride composite for enhanced reactive blue 19 degradation under visible light
Materials Science and Technology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 29, 2025
The
Ag/UU-200@g-C
3
N
4
composite
exhibited
excellent
photocatalytic
performance
for
the
degradation
of
RB19
dye
under
visible
light.
characterizations
materials
were
confirmed
by
XRD,
FT-IR,
UV-Vis
DRS,
SEM,
TEM,
EDX,
and
XPS
analyses.
demonstrated
enhanced
visible-light
absorption
a
reduced
bandgap
2.41
eV.
efficiency
was
optimized
tuning
parameters
such
as
NaBH
concentration,
catalyst
loading,
pH
value.
unique
electronic
structure
g-C
,
attributed
to
its
nitrogen
bonds
species—particularly
C–N
=
C
tertiary
groups—facilitates
effective
charge
separation.
proposed
mechanism
involves
generation
reactive
oxygen
species,
primarily
O
2
•
−
main
active
species
during
degradation.
notable
stability
reusability,
maintaining
efficacy
over
multiple
cycles.
Language: Английский