Molecules,
Journal Year:
2024,
Volume and Issue:
29(16), P. 3822 - 3822
Published: Aug. 12, 2024
Formaldehyde
(HCHO)
is
identified
as
the
most
toxic
chemical
among
45
organic
compounds
found
in
industrial
wastewater,
posing
significant
harm
to
both
environment
and
human
health.
In
this
study,
a
novel
approach
utilizing
Lanthanum-manganese
complex
oxide
(LaMnO3)/peroxymonosulfate
(PMS)
system
was
proposed
for
effective
removal
of
HCHO
from
wastewater.
Perovskite-Type
LaMnO3
prepared
by
sol-gel
method.
The
compositions
morphology
samples
were
analyzed
through
thermogravimetric
analysis
(TG),
X-ray
diffraction
(XRD),
photoelectron
spectroscopy
(XPS),
transmission
electron
microscopy
(TEM).
effects
dosage,
PMS
concentration,
initial
pH
on
rate
investigated.
When
concentration
less
than
1.086
mg/mL
(5
mL),
dosage
0.06
g,
n(PMS)/n(HCHO)
=
2.5,
more
96%
range
5–13
at
25
°C
10
min.
Compared
with
single-component
MnO2,
perovskite
structure
beneficial
catalytic
degradation
PMS.
It
an
efficient
Fenton-like
oxidation
process
treating
wastewater
containing
HCHO.
promoted
formation
SO4•−
HO•,
which
sequentially
oxidized
HCOOH
CO2.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(36)
Published: April 11, 2024
Abstract
The
high
toxicity,
volatility,
and
dispersion
of
the
light
aromatics,
benzene,
toluene,
xylene
(BTX)
pose
a
serious
threat
to
environment
human
health.
Compared
incineration,
catalytic
oxidation
technologies
for
BTX
removal
offer
benefits
such
as
low
energy
consumption,
efficiency,
pollution.
ABO
3
–type
perovskite
catalysts
(ABO
–PCs)
are
particularly
promising
materials
due
their
activity
thermal
stability,
well
adjustable
elemental
composition
flexible
structure
allowing
properties
be
improved.
Nonetheless,
full
potential
–PCs
has
yet
reached.
This
review
systematically
critically
analyses
progress
in
by
–PCs.
Catalytic
performance
is
assessed
each
category
perovskite,
including
non–doped,
doped
(A–,
B–,
or
A/B–site
doped),
loading
type
(noble
metal,
metal
oxide,
matrix
composite),
with
structure–activity
relationships
established.
A
kinetic
model
proposed
mechanism
also
presented.
Finally,
challenges
opportunities
applied
other
reactions
highlighted.
Environmental Science & Technology,
Journal Year:
2025,
Volume and Issue:
59(2), P. 1034 - 1059
Published: Jan. 6, 2025
Water
vapor
is
a
significant
component
in
real
volatile
organic
compounds
(VOCs)
exhaust
gas
and
has
considerable
impact
on
the
catalytic
performance
of
catalysts
for
VOC
oxidation.
Important
progress
been
made
reaction
mechanisms
H2O
water
resistance
strategies
oxidation
recent
years.
Despite
advancements
technology,
most
still
exhibit
low
activity
under
humid
conditions,
presenting
challenge
reducing
adverse
effects
To
develop
water-resistant
catalysts,
understanding
mechanistic
role
implementing
effective
water-resistance
with
influencing
factors
are
imperative.
This
Perspective
systematically
summarizes
related
research
oxidation,
drawing
from
over
390
papers
published
between
2013
2024.
Five
main
proposed
to
clarify
their
H2O.
inhibition/promotion
introduced,
elucidating
various
VOCs.
Additionally,
different
kinds
discussed,
including
fabrication
hydrophobic
materials,
design
specific
structures
morphologies,
introduction
additional
elements
catalyst
modification.
Finally,
scientific
challenges
opportunities
enhancing
efficient
practical
applications
purification
highlighted.
