Environmental Science Nano,
Journal Year:
2024,
Volume and Issue:
11(8), P. 3230 - 3249
Published: Jan. 1, 2024
This
review
summarizes
the
key
roles
of
various
vacancy
defects
in
PS-AOPs
and
provides
insights
into
understanding
defect
persulfate
activation
to
promote
development
water
treatments.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(7), P. 1488 - 1488
Published: March 27, 2024
As
an
azo
dye,
OG
has
toxic
and
harmful
effects
on
ecosystems.
Therefore,
there
is
urgent
need
to
develop
a
green,
environmentally
friendly,
efficient
catalyst
activate
peroxymonosulfate
(PMS)
for
the
degradation
of
OG.
In
this
study,
catalysts
MIL-101(Fe)
NH2-MIL-101(Fe)
were
prepared
using
solvothermal
method
carry
out
experiments.
They
characterized
by
means
XRD,
SEM,
XPS,
FT-IR,
results
showed
that
successfully
prepared.
Then,
catalyst/PMS
system
was
constructed,
different
reaction
systems,
initial
pH,
temperature,
dosing,
PMS
concentration,
anion
effect
investigated.
Under
specific
conditions
(100
mL
solution
with
concentration
50
mg/L,
pH
=
7.3,
temperature
25
°C,
1
100
mmol/L,
dosage
0.02
g),
only
36.6%
within
60
min;
as
comparison,
could
reach
up
97.9%,
constant
k
value
0.07245
min−1.
The
NH2-MIL-101
(Fe)/PMS
able
achieve
at
values
(pH
3~9).
mechanism
analyzed
free-radical
quenching
tests.
tests
SO4•−,
•OH,
1O2
main
active
species
during
Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(8), P. 085980 - 085980
Published: July 16, 2024
Abstract
The
flash
auto-combustion
method
was
utilized
to
produce
Cu-based
delafossites
of
CuBO
2
(B
=
Zn,
Mn,
and
Er).
x-ray
diffraction
(XRD),
high-resolution
transmission
electron
microscopy
(HRTEM),
photoelectron
spectroscopy
(XPS)
were
employed
verify
the
phase
formation,
surface
morphology,
oxidation
states
synthesized
delafossite
samples.
crystallite
sizes
determined
be
43,
16.76,
21.66
nm
for
CuZnO
,
CuMnO
CuErO
nanoparticles
(NPs),
respectively.
magnetic
characteristics
samples
studied
at
room
temperature,
revealing
their
paramagnetic
nature
through
hysteresis
effect.
Seebeck
coefficient
(S)
found
positive,
while
it
negative
.
thermoelectric
power
NPs
high,
indicating
potential
as
materials
more
efficient
devices.
Additionally,
exhibited
an
antimicrobial
response
against
four-gram
(+ve)
bacteria,
(-ve)
fungus
Candida
albicans
(CA).
data
obtained
demonstrated
that
altered
bacterial
cell
ultimately
leading
death.
Journal of the American Ceramic Society,
Journal Year:
2023,
Volume and Issue:
107(4), P. 2143 - 2154
Published: Dec. 14, 2023
Abstract
In
this
study,
in
situ
growth
of
CuO
on
the
surface
porous
geopolymer
catalyst
spheres
(GC)
was
prepared
through
a
simple
method
for
activation
peroxymonosulfate
(PMS)
to
degrade
Orange
I
(OI)
water.
GC‐0.01
exhibited
an
excellent
performance
with
more
than
95%
degradation
OI
within
30
min.
The
effects
PMS
concentrations,
dosage,
Cl
−
,
HCO
3
and
humic
acid
(HA)
GC‐0.01/PMS
system
were
systematically
investigated.
study
mechanism
showed
that
combined
generate
complexes
spheres,
which
could
electron
transfer
pathway.
addition,
variety
reactive
oxygen
species,
mainly
1
O
2
also
present
system,
OI.
This
work
provides
new
insight
into
application
oxide‐modified
geopolymers
water
purification
applications.
Langmuir,
Journal Year:
2024,
Volume and Issue:
40(28), P. 14245 - 14256
Published: June 28, 2024
Metal
oxides
can
activate
peroxymonosulfate
(PMS)
for
the
catalytic
degradation
of
organic
dyes.
However,
achieving
high
efficiency,
structural
stability,
ease
recovery,
and
recyclability
remains
challenging
both
research
practical
applications.
To
address
these
requirements,
a
bimetallic
oxide,
CuMnO2,
was
synthesized
using
simple
hydrothermal
approach
encapsulated
to
create
hydrogel
beads,
CS-Ca@PEI/CuMnO2.
Subsequently,
CS-Ca@PEI/CuMnO2
used
PMS
establish
solid–liquid
heterogeneous
oxidation
system
(CS-Ca@PEI/CuMnO2/PMS)
Congo
red
(CR).
The
effects
various
parameters
such
as
different
systems,
catalyst
dosages,
initial
pH
values,
concentrations,
temperatures,
anion
types
on
properties
CR
were
systematically
evaluated.
results
indicated
that
has
exceptional
capacity,
91.0%
at
7.
After
three
cycles,
maintained
an
86.9%
efficiency
compared
its
original
performance,
highlighting
robust
stability.
presence
reactive
radicals,
specifically
1O2
•O2–,
confirmed
through
quenching
experiments,
X-ray
photoelectron
spectroscopy
(XPS),
electron
paramagnetic
resonance
(EPR).
Liquid
chromatography-tandem
mass
spectrometry
(LC-MS)
revealed
ten
proposed
intermediates
in
process.
Due
durability,
recyclability,
retrieval,
shows
great
potential
effectively
removing
pollutants
from
industrial
wastewater.