Functional Materials Letters,
Journal Year:
2024,
Volume and Issue:
18(02)
Published: Oct. 18, 2024
In
order
to
achieve
efficient
degradation
of
Rhodamine
B
(RhB)
dye
in
a
short
time,
Fe
and
N
co-doped
TiO
2
photocatalyst
(Fe-N-TiO
)
was
prepared
by
sol–gel
method
used
for
photocatalytic
activation
peroxymonosulfate
(PMS)
degrade
RhB.
SEM-EDS,
XRD,
XPS
results
showed
that
Fe-N-TiO
successfully
prepared.
The
UV–Vis
DRS
EIS
compared
with
pure
,
the
modified
catalyst
higher
electron
transfer
efficiency
light
absorption
ability,
which
enhanced
production
ability
activated
more
PMS
generate
free
radicals
experimental
show
rate
RhB
can
reach
85.59%
under
PC/PMS
system
concentration
2.0
mmol
L[Formula:
see
text],
dosage
0.5
g
text]
pH
=
3
30
min.
addition,
has
good
repeatability
stability,
still
be
maintained
above
70%
after
5
times
continuous
use.
radical
capture
experiments
main
active
substances
reaction
were
[Formula:
text]OH,
SO
4
text]O
h[Formula:
possible
mechanism
PC/PMS/Fe-N-TiO
-0.5%
proposed,
provided
theoretical
basis
wastewater
treatment.
Journal of environmental chemical engineering,
Journal Year:
2024,
Volume and Issue:
12(4), P. 113191 - 113191
Published: May 29, 2024
Peroxymonosulfate
(HSO5−,
PMS)
is
a
well-known
oxidant
for
water
treatment.
It
needs
to
be
activated
form
strong
oxidizing
agents
of
organic
pollutants
like
sulfate
radical
(SO4●−),
hydroxyl
(●OH),
superoxide
ion
(O2•−),
and
the
non-radical
singlet
oxygen
(1O2).
Recently,
removal
synthetic
dyes
from
waters
by
PMS
upon
homogeneous
heterogeneous
catalysts
has
received
great
research
attention
due
their
high
effectiveness
oxidation
rate
determined
simple
treatments
centered
at
bench
scale
in
laboratory.
The
present
review
summarizes
analyzes
recent
trends
this
topic
over
period
2020-2023.
Homogeneous
with
transition
metal
ions
iron
Cu2+,
single
or
mixed
metals
such
as
Co,
Cu,
Fe,
Mn,
MOFs,
carbonaceous
other
materials,
have
been
examined.
action
these
detailed
generation
activation.
Selected
examples
describe
discoloration
contaminated
influence
operating
variables
on
process
performance.
production
oxidants
via
mechanisms
reduction
confirmed
specific
scavengers
EPR
analysis.
In
some
cases,
effect
aqueous
matrix
dye
analyzed
detection
its
by-products
described
proposal
pathways
degradation/mineralization
better
know
process.
A
final
section
proposes
future
development
remediation
catalytic
activators
PMS.
Chemical Physics Impact,
Journal Year:
2024,
Volume and Issue:
8, P. 100637 - 100637
Published: May 12, 2024
Nanotechnology
can
alter
matter
at
the
nanoscale
and
generate
new
materials,
gadgets,
technologies
with
unique
features
functions,
revolutionizing
medicine,
energy,
electronics,
materials
science.
This
study
synthesizes
nickel
oxide
nanoflowers
utilizing
Strychnos
potatorum
seed
extract
as
reducing
stabilizing
agents
in
an
eco-friendly
way.
The
porous
GCN
NiO
nanocomposite
enhances
for
multifunctional
capabilities.
UV–Vis,
FTIR,
EDX,
XRD,
FESEM
were
used
to
synthesize
characterize
nanoflowers.
Further
synthesized
bimetallic
nanoparticles
tested
antibacterial,
antioxidant,
catalytic
properties.
It
showed
increased
antioxidant
activity,
CV
RB
dye
degradation,
antibacterial
activity
against
S.
aureus
E.Coli.
Scavenging
was
enriched
nanoparticles.
highest
degradation
rate
98.2%
90
min.
Nanoparticle
concertation
100
µl/mL
inhibited
E.Coli
most
(18
mm).
NiO-GCN
from
may
be
a
novel
agent
industrial
dye-contaminated
wastewater.
International Journal of Environmental & Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 21
Published: Aug. 27, 2024
Herein,
effective
removal
of
brilliant
green
dye
from
the
water
was
achieved
using
eco-friendly
and
sustainable
adsorbent
(CHA/RP-CA)
derived
chitosan
(CHA)
functionalised
rambutan
(Nephelium
lappaceum
L.)
peel
carboxylic
acid
(citric
acid,
CA).
Using
Box-Behnken
Design
(BBD),
adsorption
variables,
A:
CHA/RP-CA
dosage
(0.02–0.08
g),
B:
pH
(4–10),
C:
contact
duration
(10–40
min),
were
modelled
optimised.
The
BBD
model's
results
showed
that
ideal
variables
for
maximum
BG
(93.68%)
~
10,
dose
=
0.066
g,
39
min.
Pseudo-first-order
Freundlich
models
agreed
with
experimental
by
CHA/RP-CA.
With
an
capacity
439.5
mg/g
CHA/RP-CA,
created
biomaterial
demonstrated
a
strong
ability
to
adsorb
BG.
Several
interactions,
including
Yoshida
H-bonding,
electrostatic,
n-π,
are
involved
in
cationic
process
on
This
study
encourages
development
adsorbents
waste
biomass
biopolymers
effectively
removing
dyes
wastewater.
Multiple
Sustainable
Development
Goals
(SDGs)
met
current
endeavour,
SDG
6
(Clean
Water
Sanitation),
12
(Responsible
Consumption
Production),
13
(Climate
Action),
14
(Life
Below
Water).
Titanium
oxide
(TiO2)
semiconducting
materials
attracted
great
interest
in
photocatalytic
degradation
of
organic
pollutants
the
treatment
textile
wastewater
recent
days.
The
present
study
focuses
on
a
sol-gel
method
for
synthesizing
nano-Fe
doped
TiO2
photocatalyst,
and
employs
advanced
oxidation
technique
termed
activation
persulfate
to
degrade
azo
dye.
performance
targeted
degradant
acid
orange
dye
(AO7)
was
analyzed
regarding
impacts
PDS
concentration,
solution
pH,
catalyst
dose.
Results
showed
that
under
visible
light
irradiation,
removal
rate
AO7
can
reach
peak
98.40%
within
40
min
at
an
optimal
initial
concentration
0.05
g·L-1,
pH
5,
4
mM,
dosage
0.4
accompanied
by
reaction
constant
0.1152
min-1.
Moreover,
higher
activity
nano-Fe/TiO2
comparison
pure
is
attributed
specific
surface
area,
smaller
crystalline
size,
reduced
band
gap
(2.54
eV),
increased
efficiency
electron-hole
generation
according
SEM,
XRD,
FTIR
DRS
characterization
measurements.
persisted
robustly
after
runs.
mechanism
revealed
radical
(·SO4-)
hole
(h+)
followed
superoxide
radicals
(·O2-)
played
crucial
role
providing
better
irradiation.
outcomes
demonstrate
future
possibilities
applying
photocatalyst
light.
