Catalysts,
Journal Year:
2025,
Volume and Issue:
15(3), P. 230 - 230
Published: Feb. 27, 2025
Fe-based
heterogeneous
catalytic
advanced
oxidation
processes
show
great
potential
for
treating
wastewater.
However,
catalyst
instability
often
hinders
their
practical
use,
mainly
due
to
the
slow
regeneration
of
Fe2+
sites.
Herein,
we
developed
a
Fe3S4/WO3
catalyst,
where
electron-rich
Wx
and
Sx
sites
promoted
efficient
electron
transfer,
enabling
continuous
active
on
surface.
The
exhibited
outstanding
degradation
efficiency
tetracycline
(TC)
in
peroxymonosulfate
(PMS)
system,
achieving
92.5%
removal
efficiency,
significantly
higher
than
its
individual
components
Fe3S4
(52.8%),
WO3
(43.1%),
WS2
(53.2%).
Moreover,
Fe3S4/WO3/PMS
system
demonstrated
broad
operational
pH
range
(3.0–9.0),
excellent
various
emerging
pollutants,
minimal
interference
from
background
electrolytes
organic
matter,
strong
stability
real
water
treatment.
Chemical
scavenger
tests
paramagnetic
resonance
(EPR)
analysis
confirmed
that
oxidative
TC
was
driven
by
multiple
reactive
species,
including
SO4•−,
•OH,
•O2−,
1O2.
This
study
provides
novel
strategy
regulating
catalysts
ensure
sustained
performance,
offering
pathway
rational
design
next-generation
Fenton-like
sustainable
micropollutant
Industrial & Engineering Chemistry Research,
Journal Year:
2024,
Volume and Issue:
63(22), P. 9761 - 9771
Published: May 23, 2024
The
different
acid-modified
MIL-101(Cr)
MOF
materials
have
been
exploited
for
the
Lewis
acid-catalyzed
carboxymethylation
(CM)
of
bio-alcohols
to
asymmetric
organic
carbonates
(OCs),
employing
dimethyl
carbonate
(DMC)
as
a
solvent
well
reactant.
best
catalytic
activity
was
achieved
over
acetic
MIL-101(AA)
catalyst,
demonstrating
95.3%
n-butanol
conversion
and
84%
butyl
methyl
(BMC)
selectivity.
higher
moderate
conversions
primary
(1°)
secondary
(2°)
alcohols,
with
selectivity
equivalent
that
their
corresponding
OCs,
were
attained
MIL-101(AA).
specific
surface
area
exposes
maximum
number
active
sites,
large
amount
acidic
sites
are
responsible
exceptional
performance
investigated
by
characterization
techniques,
including
N2-sorption,
Py-FTIR,
NH3-Temperature
Programmed
Desorption
(TPD)
analysis.
Other
physicochemical
properties
examined
from
Powder
X-ray
Diffraction
(PXRD),
Thermogravimteric
anaysis
(TGA),
Fourier
Transform
Infrared
Spectroscopy
(FTIR),
Field
Emission
Scanning
Electron
Microscopy
(FE-SEM)
data
showed
good
correlation
between
activities
properties.
catalyst
stable
up
five
recycles
resistant
leaching
under
employed
reaction
conditions,
confirming
heterogeneity
present
work
expands
immense
applications
CO2-derived
DMC
in
green
chemistry,
which
extended
sustainable
production
OCs.
