Molecules,
Год журнала:
2024,
Номер
29(7), С. 1525 - 1525
Опубликована: Март 28, 2024
Cobalt–nitrogen
co-doped
carbon
nanotubes
(Co3@NCNT-800)
were
synthesized
via
a
facile
and
economical
approach
to
investigate
the
efficient
degradation
of
organic
pollutants
in
aqueous
environments.
This
material
demonstrated
high
catalytic
efficiency
carbamazepine
(CBZ)
presence
peroxymonosulfate
(PMS).
The
experimental
data
revealed
that
at
neutral
pH
7
an
initial
CBZ
concentration
20
mg/L,
application
Co3@NCNT-800
0.2
g/L
facilitated
rate
64.7%
within
60
min.
Mechanistic
investigations
indicated
pyridinic
nitrogen
cobalt
species
enhanced
generation
reactive
oxygen
species.
Radical
scavenging
assays
electron
spin
resonance
spectroscopy
confirmed
radical
nonradical
pathways
contributed
degradation,
with
mechanism
being
predominant.
research
presents
development
novel
PMS
catalyst,
through
stable
method,
which
provides
cost-effective
solution
for
remediation
contaminants
water.
Separation and Purification Technology,
Год журнала:
2023,
Номер
329, С. 125115 - 125115
Опубликована: Сен. 18, 2023
Two
new
highly-efficient
and
eco-friendly
biosorbents
comprised
of
magnetite,
chitosan
Chlorella
vulgaris
(MCC)
or
Arthrospira
platensis
(MCA)
were
prepared
in
such
a
way
to
be
easily
separated
reused
for
removing
different
classes
antibiotics
as
tetracycline
(TC),
ciprofloxacin
(CIP)
amoxicillin
(AMX)
from
wastewater.
They
characterized
using
SEM,
FTIR
TGA.
Biosorption
experiments
performed
investigate
the
impact
pH,
biosorbent
dosage,
initial
antibiotic
concentration,
contact
time,
concentration
background
electrolytes
(NaCl,
KCl
CaCl2)
on
adsorption.
Both
biocomposites
showed
outstanding
performance
removal.
Equilibrium
data
modelled
Langmuir,
Freundlich,
Temkin,
Dubinin-Radushkevich
adsorption
isotherms,
among
which
first
one
gave
best
fit,
with
maximum
TC,
CIP
AMX
capacities
834.0,
394.9,
150.8
mg/g
MCA
831.1,
374.2,
140.2
MCC,
respectively.
To
follow
time-evolution,
pseudo-first-order,
pseudo-second-order
intraparticle
diffusion
kinetic
models
tested,
second
proved
best-fitting
one.
Thermodynamic
parameters
revealed
that
was
spontaneous
endothermic.
regenerated
through
microwave-assisted
treatment
repeatedly
up
four
cycles,
losing
at
equilibrium
by
no
>7,
4
9
%,
This
study
suggests
both
may
effective
sustainable
alternatives
commercial
adsorbents
Molecules,
Год журнала:
2025,
Номер
30(2), С. 364 - 364
Опубликована: Янв. 17, 2025
Emerging
contaminants
(ECs),
encompassing
pharmaceuticals,
personal
care
products,
pesticides,
and
industrial
chemicals,
represent
a
growing
threat
to
ecosystems
human
health
due
their
persistence,
bioaccumulation
potential,
often-unknown
toxicological
profiles.
Addressing
these
challenges
necessitates
advanced
analytical
tools
capable
of
detecting
quantifying
trace
levels
ECs
in
complex
environmental
matrices.
This
review
highlights
the
pivotal
role
mass
spectrometry
(MS)
monitoring
ECs,
emphasizing
its
high
sensitivity,
specificity,
versatility
across
various
techniques
such
as
Gas
Chromatography-Mass
Spectrometry
(GC-MS),
Liquid
(LC-MS),
High-Resolution
Mass
(HR-MS).
The
application
MS
has
facilitated
real-time
detection
volatile
organic
compounds,
comprehensive
non-targeted
screening
unknown
contaminants,
accurate
quantification
diverse
matrices
including
water,
soil,
air.
Despite
effectiveness,
matrix
interferences,
lack
standardized
methodologies,
limited
spectral
libraries
persist.
However,
recent
advancements,
hybrid
systems
integration
artificial
intelligence
(AI),
are
paving
way
for
more
efficient
predictive
modeling
contaminant
behavior.
Continued
innovation
technologies
collaborative
efforts
essential
overcome
existing
ensure
sustainable
solutions
mitigating
risks
associated
with
emerging
contaminants.
Journal of Hazardous Materials,
Год журнала:
2025,
Номер
unknown, С. 138029 - 138029
Опубликована: Март 1, 2025
Although
metal
clusters
are
generally
considered
as
impurities
accompanying
the
synthesis
of
single
atom
catalysts,
their
extraordinary
potential
in
regulating
catalytic
reactions
has
attracted
widespread
attention.
In
this
study,
iron
cluster
decorated
catalyst
(Fe-SACAs)
were
synthesized
to
activate
peroxymonosulfate
(PMS)
for
removal
organic
pollutants,
and
a
differential
PMS
activation
mechanism
induced
by
selective
adsorption
pollutants
was
observed
first
time.
The
chemical
coordination
between
active
sites
identified
dominant
chemisorption
Fe-SACAs.
competitive
occupation
diversity
targeted
pollutant
molecules
ionization
potentials
thereby
revealed
be
inducement
adsorption-dependent
oxidation.
oxidation
fully
elucidated
using
density
functional
theory
(DFT).
Finally,
an
optimized
treatment
process
proposed
based
on
mechanism,
which
achieved
zero
oxidant
residue
emission
simultaneously.
This
study
unveils
crucial
effect
reactant
mass
transfer
Fe-SACAs
mediated
Fenton-like
reactions.
Molecules,
Год журнала:
2024,
Номер
29(16), С. 3900 - 3900
Опубликована: Авг. 17, 2024
Among
the
various
compounds
regarded
as
emerging
contaminants
(ECs),
pharmaceuticals
and
personal
care
products
(PPCPs)
are
of
particular
concern.
Their
continuous
release
into
environment
has
a
negative
global
impact
on
human
life.
This
review
summarizes
sources,
occurrence,
persistence,
consequences
exposure,
toxicity
PPCPs,
evaluates
analytical
methods
used
in
identification
quantification
PPCPs
variety
solid
liquid
environmental
matrices.
The
current
techniques
choice
for
analysis
state-of-the-art
chromatography
coupled
to
mass
spectrometry
(LC-MS)
or
tandem
(LC-MS
