ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 18, 2025
This
study
introduces
a
novel
method
for
synthesizing
Fe-based
metal-organic
framework
(MOF),
leveraging
Fe
wire
as
substrate
and
an
iron
precursor
source
with
which
to
grow
MIL-88B(Fe)
MIL-88B(Fe)-NH2.
simple
in
situ
approach
requires
only
the
addition
of
ligand
MOF
formation,
eliminating
need
additional
metal
precursor.
The
adsorption
performance
developed
on
is
evaluated
using
polar
formaldehyde
gas
nonpolar
cyclohexane
vapor
hazardous
model
gas/vapor
(GV).
key
discovery
highlights
pivotal
role
functional
compatibility
between
GV
governing
diffusivity
through
mesopores
(<20
nm)
within
MOF,
validated
experimental
analysis
theoretical
calculations.
In
contrast,
interparticle
larger
pores
(>20
remains
unaffected,
demonstrating
unique
influence
nanoscale
interactions.
Semiempirical
atomic
simulations
support
results,
revealing
stronger
interactions
more
sites
compatible
GV-MOF
pairs.
establishes
sustainable
pathway
designing
advanced
adsorbents,
emphasizing
importance
micro-/meso-diffusivity
hierarchical
porous
structure
maximize
overall
capacity.
A
proof-of-concept
multipurpose
adsorbent
conceived
by
weaving
wires
different
functionalities
achieve
simultaneous
removal
GVs.
Toxics,
Год журнала:
2025,
Номер
13(2), С. 135 - 135
Опубликована: Фев. 13, 2025
Organic
pollutants
like
per-
and
polyfluoroalkyl
substances
(PFASs)
exhibit
persistence,
bioaccumulation,
resistance
to
degradation,
high
toxicity,
garnering
significant
attention
from
scholars
worldwide.
To
better
address
mitigate
the
environmental
risks
posed
by
PFASs,
this
paper
employs
bibliometric
analysis
examine
literature
on
PFASs'
concentrations
collected
in
Web
of
Science
(WoS)
database
between
2019
2024.
The
results
show
that
overall
trend
pollution
research
is
relatively
stable
increasing.
In
addition,
study
also
summarizes
status
traditional
PFASs
across
different
media
typical
freshwater
basins.
It
analyzes
surface
water,
sediment,
aquatic
organisms,
elucidating
their
distribution
characteristics
potential
sources.
While
perfluorooctanoic
acid
(PFOA)
perfluorooctane
sulfonic
(PFOS)
levels
water
environments
are
declining
annually,
short-chain
substitutes
emerging
as
primary
pollutants.
Short-chain
frequently
detected
whereas
long-chain
tend
accumulate
sediments.
more
likely
concentrate
protein-rich
organs
tissues.
presence
largely
influenced
human
activities,
such
metal
plating,
fluoride
industry
development,
industrial
wastewater
discharge.
Currently,
development
China
faces
a
complex
dilemma,
entangled
policy
legal
constraints,
production
demands,
use
new
alternatives,
regulation
restriction,
creating
vicious
cycle.
Breaking
deadlock
necessitates
continuous
active
scientific
particularly
PFOS,
with
an
emphasis
detailed
investigations
sources
sinks.
Furthermore,
ecological
health
risk
assessments
were
conducted
using
Risk
Quotient
(RQ)
Hazard
(HQ)
methods.
Comprehensive
comparison
indicates
(such
PFOA)
majority
basins
at
low-risk
level
(RQ
<
0.1
or
HQ
0.2),
PFOS
some
medium-risk
(0.1
RQ
1),
no
basin
high-risk
level.
adsorption
removal
approaches
analyzed,
revealing
combination
multiple
treatment
technologies
novel
integrated
technology
holds
excellent
prospects
for
PFASs.
Analytical Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Perfluorooctanoic
acid
(PFOA),
a
prominent
member
of
the
per-
and
polyfluoroalkyl
substance
(PFAS)
family,
has
emerged
as
new
perpetual
pollutant
posing
significant
environmental
health
risks,
necessitating
developing
highly
selective
materials
for
its
sensitive
detection
in
water.
In
this
work,
we
developed
an
electroactive
fluorine-functionalized
Cu-MOF
(F-Cu-NH2BDC)
through
postmodification
copper-2-amino-terephthalic
(Cu-NH2BDC)
MOF
with
2,3,5,6-tetrafluoroterephthalaldehyde
(TFTA).
Experimental
computational
results
suggested
that
F-F
interactions
between
decorated
tetrafluorobenzaldehyde
groups
PFOA,
well
among
PFOA
molecules
themselves,
would
induce
self-aggregation
on
surfaces
or
pores
F-Cu-NH2BDC.
This
specific
aggregation
inhibited
contact
electron
transfer
F-Cu-NH2BDC
electrolyte,
resulting
decrease
inherent
electrochemical
Cu2+/Cu+
redox
signal
from
Based
this,
F-Cu-NH2BDC-based
label-
probe-free
sensor
was
exploited
excellent
linear
range
5
pM
to
500
μM
extremely
low
limit
3.54
pM,
surpassing
most
currently
reported
nonelectrochemical
PFAS
sensors.
also
exhibited
good
stability,
reproducibility,
anti-interference
performance,
enabling
accurate
measurement
concentrations
actual
commercial
drinking
These
findings
shed
light
design
sensors
utilizing
interaction
working
mechanism.
Sustainability,
Год журнала:
2025,
Номер
17(5), С. 2170 - 2170
Опубликована: Март 3, 2025
This
study
is
constituted
of
the
chemical
activation
camelina
meal
(CM)
biochar
and
utilization
these
activated
carbon
for
adsorption
perfluorooctanoic
acid
(PFOA)
from
water.
Camelina
meal,
a
sustainable
agro-based
byproduct,
underwent
slow
pyrolysis
subsequent
with
potassium
carbonate
(K2CO3),
hydroxide
(KOH),
sodium
(NaOH).
Among
activating
agents,
KOH
emerged
as
one
most
efficient
yielding
superior
surface
properties
significantly
higher
content.
After
screening
central
composite
design
(CCD)
was
employed
to
optimize
critical
constraints
like
temperature
(600–900
°C),
time
(60–120
min),
KOH-to-feed
ratio
(0.5–1.5),
objective
maximizing
area
capacities
samples.
The
exhibited
substantial
enhancement
in
PFOA
efficacy.
Optimal
achieved
using
produced
at
800
°C
an
60
min
1.5.
material
1558.4
m2/g
demonstrated
removal
efficiency
92.3%.
findings
underscore
efficacy
chemically
ecological
adsorbent
remediation
PFOA-polluted
