Materials,
Год журнала:
2024,
Номер
18(1), С. 39 - 39
Опубликована: Дек. 25, 2024
This
article
presents
a
comprehensive
examination
of
the
combined
catalytic
conversion
technology
for
nitrogen
oxides
(NOx)
and
volatile
organic
compounds
(VOCs),
which
are
primary
factors
contributing
to
formation
photochemical
smog,
ozone,
PM2.5.
These
pollutants
present
significant
threat
air
quality
human
health.
The
examines
reaction
mechanism
interaction
between
photocatalytic
NH3-SCR
oxidation
technology,
highlighting
limitations
existing
techniques,
including
catalyst
deactivation,
selectivity
issues,
regeneration
methods,
environmental
impacts
catalysts.
Furthermore,
anticipates
prospective
avenues
research,
underscoring
necessity
development
bifunctional
catalysts
capable
concurrently
transforming
NOx
VOCs
across
broad
temperature
spectrum.
review
encompasses
multitude
integrated
selective
reduction
(SCR),
oxidation,
low-temperature
plasma
biological
purification
technology.
highlights
further
research
into
design
principles,
structure–activity
relationships,
performance
evaluations
in
real
industrial
environments.
is
required
develop
more
efficient,
economical,
environmentally
friendly
waste
gas
treatment
technologies.
concludes
by
outlining
importance
collaborative
management
strategies
VOC
emissions
potential
achieving
these
goals.
Nanomaterials,
Год журнала:
2023,
Номер
13(2), С. 341 - 341
Опубликована: Янв. 13, 2023
Halloysite
nanoclay
(HNC)
was
examined
as
an
adsorbent
for
the
individual
and
simultaneous
removal
of
antibiotic
enrofloxacin
(ENRO)
methylene
blue
(MB)
from
aqueous
solutions,
alongside
its
regeneration
via
cold
atmospheric
plasma
(CAP)
bubbling.
Initially,
batch
kinetics
isotherm
studies
were
carried
out,
while
effect
several
parameters
evaluated.
Both
ENRO
MB
adsorption
onto
HNC
better
described
by
Langmuir
model,
with
maximum
capacity
being
34.80
27.66
mg/g,
respectively.
A
Pseudo-second
order
model
fitted
experimental
data
satisfactorily,
suggesting
chemisorption
(through
electrostatic
interactions)
prevailing
mechanism,
whereas
also
controlled
film
diffusion.
In
binary
system,
presence
seemed
to
act
antagonistically
ENRO.
The
saturated
regenerated
inside
a
CAP
microbubble
reactor
re-tested
applying
new
cycles.
bubbling
able
efficiently
regenerate
low
energy
requirements
(16.67
Wh/g-adsorbent)
in
contrast
Fenton
oxidation.
Most
importantly,
enhanced
CAP-regenerated
(compared
raw
HNC),
when
applied
cycles,
indicated
activation
during
process.
present
study
provides
green,
sustainable
highly
effective
alternative
water
remediation
where
pharmaceutical
dyes
co-exist.
The
ever-increasing
emissions
of
volatile
organic
compounds
(VOCs)
from
industrial
activities
pose
significant
environmental
and
health
risks.
Nonthermal
plasma
(NTP)
degradation
technology
has
emerged
as
a
prominent
method
for
VOC
due
to
the
mild
reaction
conditions
but
demands
an
efficient
catalyst
high
product
conversion.
This
study
presents
mesoporous
layered
NiFe
double
silicate
fabricated
by
between
13X
zeolite
hydroxides
(LDHs).
Under
NTP
conditions,
catalysts
achieved
90%
ethyl
acetate
conversion
with
CO2
selectivity
45%,
maintaining
stability
over
400
min.
performance
demonstrates
synergy
in
adsorption
offers
more
active
catalytic
sites
on
situ-generated
catalyst.
Simulation
results
also
suggested
that
two-dimensional
sheet
structure
effectively
localizes
electric
field
surface
therefore
may
facilitate
generation
species
adsorption.
work
provides
pathway
design
highly
stable
applications.
Catalysts,
Год журнала:
2023,
Номер
13(12), С. 1461 - 1461
Опубликована: Ноя. 23, 2023
Zeolite-based
materials
are
widely
used
as
adsorbents
and
catalysts
for
purifying
air
pollutants
like
NOx
VOCs
due
to
abundant
pore
structure,
regular
distribution,
numerous
ion
exchange
sites.
Thermal
treatment
is
a
necessary
procedure
both
removing
impurities
in
pores
promoting
the
metal
active
dispersed
evenly
before
zeolite-based
adsorbents/catalysts
were
applied
NOx/VOCs.
Nevertheless,
conventional
thermal
field
(i.e.,
high-temperature
calcination,
purging,
etc.)
takes
large
energy
consumption.
In
contrast,
unconventional
external-field
treatments
such
non-thermal
plasma
microwave
show
significant
advantages
of
high
efficiency,
low
consumption
well
pollution,
which
substitute
traditional
many
fields.
this
paper,
roles
or
adsorption/catalysis
NOx/VOCs
reviewed
from
three
aspects
assisting
activation
materials,
cooperative
catalysis
process,
zeolites
synthesis.
The
reasons
improving
textural
properties,
sites,
performance,
etc.
illuminated
detail.
Moreover,
influences
various
parameters
power,
time,
temperature,
on
above
elaborated.
It
hoped
that
review
could
provide
some
advanced
guidance
researchers
develop
highly
efficient
materials.
