Water Research,
Journal Year:
2023,
Volume and Issue:
244, P. 120543 - 120543
Published: Aug. 29, 2023
The
accumulation
of
plastic
debris
in
aquatic
organisms
has
raised
serious
concerns
about
the
potential
health
implications
their
incorporation
into
food
chain.
However,
conventional
water
remediation
techniques
are
incapable
effectively
removing
nanoplastics
(NPs)
smaller
than
200
nm,
which
can
have
harmful
effect
on
animal
and
human
health.
Herein,
we
demonstrate
"on-the-fly"
capture
NPs
through
enlargement
(approximately
4,100
times)
using
self-propelled
nanobots
composed
a
metal-organic
framework.
Under
visible-light
irradiation,
iron
hexacyanoferrate
(FeHCF)
nanobot
exhibits
fuel-free
motion
by
electrostatically
adsorbing
NPs.
This
strategy
contribute
to
reducing
pollution
environment,
is
significant
environmental
challenge.
Light-induced
intervalence
charge
transfer
FeHCF
lattice
induces
bipolarity
surface,
leading
binding
negatively
charged
local
electron
density
then
triggers
self-propulsion,
thereby
inducing
agglomeration
FeHCF@NP
complexes
stabilize
metastable
state.
maximum
removal
capacity
3,060
mg∙g-1
rate
constant
0.69
min-1,
higher
those
recorded
for
materials
reported
literature.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(3), P. 3154 - 3167
Published: Jan. 26, 2024
The
photocatalytic
activity
of
individual
metal–organic
frameworks
(MOFs)
such
as
UiO-66-NH2
and
MIL-101(Fe)
is
less
satisfactory
due
to
the
disappointing
separation
rate
electron–hole
pairs
weak
solar
energy
utilization
efficiency.
In
this
context,
we
develop
hierarchical
dual
Z-scheme
heterostructured
photocatalysts
prepared
via
an
in
situ
hydrothermal
synthesis
method
anchoring
cadmium
sulfide
(CdS)
nanoparticles
onto
(UiO-66-NH2)-(MIL-101(Fe))
(UM)
frameworks.
Attributed
synergistic
effects
CdS,
UiO-66-NH2,
MIL-101(Fe),
(UiO-66-NH2)-(MIL-101)(Fe)-CdS
(UM-CdS)
exhibits
outstanding
degradation
activities
toward
TC
degradability.
Typically,
10
mg
UM-CdS
achieved
87%
within
140
min,
which
8.7,
2.4,
1.4
times
than
those
higher
with
a
dosage
catalysts
compared
previous
reports.
primarily
attributed
its
structure,
provides
numerous
active
sites.
Additionally,
special
heterostructure
not
only
migration
mechanism
for
charge
carriers,
facilitates
efficient
photoinduced
electrons
holes,
but
also
promotes
redox
capability
UM-CdS.
Furthermore,
trapping
tests
demonstrated
that
•O2–,
•OH,
h+
were
main
species
during
process.
products
or
intermediates
studied
in-depth
through
liquid
chromatography–mass
spectrometry
(LC-MS)
technique.
Besides,
possesses
excellent
stability,
retaining
more
90%
initial
after
fifth
cycle.
This
work
double
MOF-supported
CdS
strategy
prepare
recyclable
heterojunction
refractory
antibiotics
(e.g.,
TC)
sewage.
Environmental Science and Pollution Research,
Journal Year:
2024,
Volume and Issue:
31(8), P. 11857 - 11872
Published: Jan. 15, 2024
Abstract
In
this
study,
the
photocatalytic
activity
of
nanomaterials
Ag/AgX
(X
=
Cl,
Br,
I)
is
reported.
Highly
efficient
silver
halide
(Ag/AgX
where
X
photocatalysts
were
synthesized
through
a
hydrothermal
method.
The
samples
characterized
using
range
techniques
such
as
X-ray
diffraction
(XRD),
scanning
electron
microscopy
(SEM),
and
Brunauer–Emmett–Teller
(BET)
to
check
their
structural,
morphology,
textural
optical
properties.
addition,
was
evaluated
degradation
2,4-dichlorophenol
(2,4-DCP)
under
UV
visible
light
irradiation.
XRD
analysis
confirmed
presence
single-phase
structure
(pure
phase)
in
photocatalysts.
SEM
micrographs
showed
agglomeration
with
non-uniform
distribution
particles,
which
characteristic
surfactant-free
precipitation
reactions
aqueous
media.
Ag/AgBr
photocatalyst
exhibited
best
efficiency,
resulting
83.37%
89.39%
photodegradation
after
5
h
irradiation,
respectively.
effect
catalyst
loading,
initial
solution
pH,
2,4-DCP
concentration
investigated
for
best-performing
photocatalyst.
kinetics
described
by
pseudo-first-order
Langmuir–Hinshelwood
model.
capacity
decreased
50%
five
reuse
cycles.
images
revealed
heightened
levels
on
surface.
study
proved
feasibility
simple
synthesis
methods
produce
active
capable
degrading
refractory
phenolic
pollutants
systems.
Advanced Functional Materials,
Journal Year:
2023,
Volume and Issue:
34(43)
Published: Sept. 1, 2023
Abstract
To
help
ensure
a
prosperous
future
on
Earth
for
coming
generations,
academia
and
industry
need
to
transform
the
way
they
plan
carry
out
synthesis
of
novel
materials
make
them
more
environmentally
sustainable.
In
particular,
field
reticular
materials,
i.e.,
metal‐organic
frameworks,
zeolitic
imidazolate
covalent
organic
has
great
potential
outperform
other
revolutionize
various
fields
applications.
This
review
highlights
several
key
aspects
from
choice
their
starting
solvents
synthetic
methodologies
that
fall
under
umbrella
Green
Chemistry
principles,
incorporates
Circular
Economy
perspective
by
providing
relevant
strategies
such
as
reuse,
regeneration,
or
recycling
maximize
value
Earth's
available
resources.
Moreover,
it
will
shed
light
life
cycle
assessment
results
selected
consider
how
constraints
imposed
metrics,
circular
patterns
shape
rational
sustainable
design
discovery
materials.
