Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Апрель 28, 2025
Abstract
As
environmental
pollutants
pose
a
serious
threat
to
socioeconomic
and
health,
the
development
of
simple,
efficient,
accurate
cost-effective
methods
for
pollution
monitoring
control
remains
major
challenge,
but
it
is
an
unavoidable
issue.
In
past
decade,
artificial
nanozymes
have
been
widely
used
pollutant
control,
because
their
low
cost,
high
stability,
easy
mass
production,
etc.
However,
conventional
nanozyme
technology
faces
significant
challenges
in
terms
difficulty
regulating
exposed
crystal
surface,
complex
composition,
catalytic
activity,
contrast,
emerging
single-atom
(SANs)
attracted
much
attention
field
due
multiple
advantages
atomically
dispersed
active
sites,
atom
utilization
efficiency,
tunable
coordination
environment,
To
date,
insufficient
efforts
made
comprehensively
characterize
applications
SANs
pollutants.
Building
on
recent
advances
field,
this
review
systematically
summarizes
main
synthesis
highlights
Finally,
we
critically
evaluate
limitations
SANs,
provide
insights
into
future
prospects
Water,
Год журнала:
2025,
Номер
17(3), С. 454 - 454
Опубликована: Фев. 6, 2025
Adsorbents
derived
from
bamboo,
such
as
biochar,
charcoal,
activated
carbon,
and
chemically
modified
are
recognized
for
their
efficiency
cost-effectiveness
in
removing
heavy
metals
water.
Despite
this,
there
remains
a
gap
applying
bamboo-based
adsorbents
treating
metal-contaminated
water
sources,
particularly
regarding
physicochemical
properties,
adsorption
mechanisms,
modifications.
This
review
highlights
the
influence
of
factors
specific
surface
area,
pore
distribution,
pH,
cation
exchange
capacity,
elemental
composition,
functional
groups
on
ability
bamboo
to
adsorb
metals.
It
also
discusses
recent
advancements
enhancing
properties
through
physical
chemical
modifications
examines
how
variables
like
adsorbent
dosage,
temperature,
initial
concentrations
cations,
affect
metal
removal.
The
categorizes
mechanisms
into
complexation,
adsorption,
electrostatic
interaction,
ion
exchange,
precipitation,
redox
effect.
While
have
shown
higher
sorption
capacity
laboratory
settings,
is
need
more
comprehensive
studies
optimize
performance,
scalability,
real-world
applications.
Environmental Technology & Innovation,
Год журнала:
2023,
Номер
30, С. 103121 - 103121
Опубликована: Март 23, 2023
In
this
paper,
peanut
shells
were
used
as
the
raw
material
for
preparing
biochar
(PBC),
and
artificial
simulated
aging
was
to
age
PBC.
To
investigate
effectiveness
of
before
after
removal
Pb
ciprofloxacin
(CIP)
alone
feasibility
simultaneous
CIP.
The
effects
different
methods
on
physicochemical
properties
investigated
by
measuring
specific
surface
area
(BET),
scanning
electron
microscopy
(SEM),
X-ray
diffraction
(XRD)
Fourier
transform
infrared
absorption
spectrometry
(FTIR)
biochar.
results
showed
that
C
content
decreased
aging,
while
O/C,
H/C,
(N+O)/C,
O
contents
increased.
Kinetic
adsorption,
adsorption
isothermal
competitive
experiments
performed
study
CIP
Pb2+
under
single
combined
pollution
systems.
Aging
inhibited
biochar,
inhibition
size
ranked
high-temperature
>
freeze-thaw
cycles
natural
aging.
However,
effect
insignificant.
in
complex
contamination
system
would
compete
with
oxygen-containing
functional
groups
sites
indicating
pollutant
mechanism
is
influenced
various
factors
such
species.
This
shows
regional
climatic
target
species
must
be
considered
when
applying
removal,
which
may
affect
long-term
remediation.
Journal of Hazardous Materials,
Год журнала:
2023,
Номер
452, С. 131325 - 131325
Опубликована: Март 31, 2023
In
this
study,
the
functionalized
smectitic
clay
(SC)-based
nanoscale
hydrated
zirconium
oxide
(ZrO-SC)
was
successfully
synthesized
and
utilized
for
adsorptive
removal
of
levofloxacin
(LVN)
from
an
aqueous
medium.
The
ZrO-SC
its
precursors
(SC
(ZrO(OH)2))
were
extensively
characterized
using
various
analytical
methods
to
get
insight
into
their
physicochemical
properties.
results
stability
investigation
confirmed
that
composite
is
chemically
stable
in
strongly
acidic
surface
measurements
revealed
ZrO
impregnation
SC
resulted
increased
area
(six-fold
higher
than
SC).
maximum
sorption
capacity
LVN
356.98
68.87
mg
g-1
during
batch
continuous
flow
mode
studies,
respectively.
mechanistic
studies
onto
mechanisms,
such
as
interlayer
complexation,
π-π
interaction,
electrostatic
complexation
involved.
kinetic
continuous-flow
indicated
better
applicability
Thomas
model.
However,
good
fitting
Clark
model
suggested
multi-layer
LVN.
cost
estimation
studied
sorbents
also
assessed.
obtained
indicate
capable
removing
other
emergent
pollutants
water
at
a
reasonable
cost.
Industrial & Engineering Chemistry Research,
Год журнала:
2023,
Номер
62(3), С. 1245 - 1256
Опубликована: Янв. 12, 2023
This
article
describes
the
synthesis,
characterization,
and
performance
of
graphene-based
magnetic
cation
exchangers
as
low-cost
nanoadsorbers
for
removal
methylene
blue
from
aqueous
solutions.
The
structure
surface
morphology
were
characterized
by
X-ray
diffraction,
Fourier
transform
infrared,
Raman,
Brunauer–Emmett–Teller,
photoelectron
spectroscopy,
field
emission
scanning
electron
microscopy,
high-resolution
transmission
vibrating
sample
magnetometry,
thermogravimetric
analysis.
effect
pH,
incubation
time,
saturated
adsorption
capacities,
isotherms
kinetics
on
sulfonated
graphene
oxide
(SMGO)
exchanger
has
been
systematically
studied.
A
comparative
analysis
samples
was
conducted
with
oxide,
oxide.
Kinetic
studies
showed
that
followed
a
pseudo-second-order
model,
while
estimated
maximum
capacity
using
Langmuir
nonlinear
isotherm
246.47
mg
g–1.
Multiple
regeneration
reuse
experiments
indicated
SMGO
remained
above
80%
after
seven
cycles
cationic
pollutants
solutions
could
be
applied
to
wastewater
treatment.
