An Adsorbent for Efficient and Rapid Gold Recovery from Solution: Adsorption Properties and Mechanisms
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 14, 2025
Adsorption
is
an
efficient
and
highly
selective
method
for
gold
recovery.
Introducing
rich
N/S
organic
groups
to
combine
with
metal-organic
frameworks
(MOFs)
as
adsorbents
regarded
a
practical
approach
enhance
Herein,
MOF
(zirconium
isothiocyanatobenzenedicarboxylate
MOF,
UiO-66-NCS)
was
designed
amidinothiourea
(AT)
form
UiO-66-AT
amidothiourea-benzenedicarboxylate
MOF)
rapid
adsorption.
The
prepared
delivers
improved
adsorption
capacity
(about
903.02
mg/g
at
1000
mg·L-1
of
the
initial
Au3+)
impressive
rate
within
minutes
10
min
200
Au3+).
Meanwhile,
it
exhibits
sustainable
stability
after
5
cycles
retention
99.52%
excellent
selectivity
98.76%
in
actual
wastewater.
According
advanced
characterizations
Density
Functional
Theory
(DFT)
simulation,
mechanism
might
be
elaborated
electrostatic
adsorption,
chelating
coordination,
chemical
reduction.
modified
active
provide
sites
Au(III)
reduction
Au(0).
maintains
large
high
surface
activity
while
realizing
stable
application
multiple
cycles,
which
good
value.
Язык: Английский
High-Efficiency Catalytic Ozonation Degradation of Ni Complex Wastewater Using Mn-N Codoped Active Carbon Catalyst
Caiyi Jiang,
Dongzheng Wang,
Min Li
и другие.
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 3, 2025
With
the
rapid
development
of
electroless
nickel
(Ni)
plating
industry,
a
large
amount
Ni
complex
wastewater
is
inevitably
produced,
which
serious
threat
to
ecological
environment.
Herein,
novel
Mn-N
codoped
active
carbon
(Mn-N@AC)
catalyst
with
high
catalytic
ozonation
ability
was
synthesized
by
impregnation
precipitation
method
and
characterized
BET,
XRD,
Raman,
SEM,
FTIR,
TPR.
Meanwhile,
Mn-N@AC
showed
excellent
ability,
stability,
applicability.
When
Ni-EDTA
(TOC
=
400,
58.05
mg/L)
used
as
simulated
wastewater,
removal
efficiency
TOC
total
reached
97.8
92.7%,
respectively,
after
three
cycles,
still
up
93.6%.
replaced
Ni-citrate,
Ni-tartaric,
Ni-malate,
remained
above
93%.
In
addition,
mechanistic
insights
quenching
experiments
EPR
verified
mainly
attributed
indirect
oxidation
·OH
·O2–,
potential
mechanism
proposed.
The
work
provides
into
deep
low
cost
efficiency.
Язык: Английский
Tailored Fibrils Approach via Ag(I).Peptidomimetic-Based Interface Design: Efficient Encapsulation of Diverse Active Pharmaceutical Ingredients in Wastewater Remediation during Effluent Treatment Plant (ETP) Processing
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 22, 2025
Pharmaceutical
pollution
in
wastewater
poses
significant
environmental
and
public
health
concerns
worldwide.
Chloramphenicol
(CP),
an
antibiotic
widely
used
medical
veterinary
applications,
is
among
the
active
pharmaceutical
ingredients
(APIs)
frequently
detected
aquatic
environments.
This
study
explored
encapsulation
of
chloramphenicol
API
contaminated
using
rationally
designed
fibrations
based
on
silver
metal
ion-directed
self-assembly
fibrillator-type
self-assembling
ligand
(ANS-3).
We
further
investigated
removal
various
commonly
prescribed
drugs,
including
antibiotics
such
as
β-lactam
(amoxicillin),
fluoroquinolone
(ciprofloxacin),
aminoglycoside
(neomycin),
tetracycline;
antiparasitic
agents
with
antiprotozoal
properties
(praziquantel
metronidazole);
nonsteroidal
anti-inflammatory
drugs
(NSAIDs)
phenylbutazone
ketoprofen;
vasodilator
isoxsuprine;
amphiphilic
antidepressants
(amitriptyline);
antiviral
drug
amantadine.
The
findings
validated
crucial
influence
polar
multifunctionality
structural
complexity
enhancing
interactions
Ag.ANS-3
matrix,
emphasizing
its
potential
for
efficient
sequestration.
First,
picolinic
acid
(PA)
phenylalanine
(F)
were
evaluated
their
ability
to
form
fibrillar
structures,
morphological
characterization
revealed
well-defined
networks
varying
degrees
porosity
interconnectivity.
Then,
strategic
inclusion
leucine
synthesizing
ANS-3
facilitated
formation
robust
networks,
employing
hydrophobic
drive
process.
Finally,
APIs
was
Ag(I)
ion-driven
self-assembled
nanofibrous
material.
research
contributes
development
innovative
physicochemical
treatment
strategies
remediation
validates
importance
rational
design
encapsulation-based
technologies.
Язык: Английский
Electrospun Polyvinyl Chloride/UiO-66(COOH)2 Nanocomposite Membranes for Efficient and Rapid Heavy Metal Removal
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 27, 2025
This
study
explores
the
effectiveness
of
a
new
composite
membrane
fabricated
from
poly(vinyl
chloride)
(PVC)
and
UiO-66(COOH)2
metal-organic
framework
(MOF)
for
removal
heavy
metals
water.
The
electrospinning
technique
was
successfully
employed
to
homogeneously
incorporate
nanocrystals
into
PVC,
producing
fibrous
membranes.
membranes
were
fully
characterized
using
several
techniques
such
as
scanning
electron
microscopy
(SEM),
capillary
flow
porometry,
powder
X-ray
diffraction
(PXRD),
thermogravimetric
analysis
(TGA),
tensile
strength
analysis.
metal
performance
evaluated
against
lead,
cadmium,
mercury
in
both
single
mixed
solutions
at
different
concentrations.
Results
indicated
high
efficiency
(>90%)
selectivity
lead
solutions,
especially
concentrations
less
than
50
ppm,
along
with
adsorption
capacity
(Qmax
=
203
mg/g).
While
cadmium
demonstrated
lower
%
40%
compared
80%
it
exhibited
highest
1312
mg/g)
among
three
metals.
For
mercury,
however,
decrease
more
pronounced,
only
10%
systems
lowest
40.5
Further
experiments
showed
that
presence
salts,
chlorides,
nitrates,
sulfates,
did
not
significantly
affect
removal.
Conversely,
consistently
low,
regardless
these
conditions.
Additionally,
temperature-dependent
studies
revealed
increasing
temperature
enhanced
capacity,
confirming
process
spontaneous
endothermic.
Interestingly,
reusability
consistent
over
90%
after
four
cycles
use,
particularly
15
although
other
efficiency.
Almost
all
pollutants
better
fit
Langmuir
second-order
kinetic
models,
suggesting
is
single-layered
chemical
process.
Furthermore,
holder
design
three-dimensional
(3D)
printing
tested
underscore
potential
PVC/MOFs
effective
materials
efficient
rapid
remediation
(5
mins)
contaminated
water
sources.
improved
while
maintaining
mechanical
stability,
addressing
issue
handling
MOFs
alone
by
providing
robust
matrix
support
membrane.
approach
facilitates
easier
efficiency,
paving
way
industrial
applications.
Язык: Английский
Insight into the Specific Adsorption of Cu(II) by a Zinc-Based Metal–Organic Framework Mediated via a Proton-Exchange Mechanism
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 12, 2025
In
the
context
of
scarce
metal
resources,
one-step
separation
and
recovery
high-value
copper
ions
from
secondary
resources
is
significant
importance
presents
substantial
challenges.
This
study
identified
a
Zn-based
triazole
MOF
(Zn(tr)(OAc))
with
accessible
noncoordinated
terminal
hydroxyl
groups
within
its
framework.
The
Zn(tr)(OAc)
surpasses
most
currently
reported
Cu-specific
adsorbents
regarding
adsorption
capacity
Cu2+
selectivity.
Furthermore,
in
experiment
Cu2+,
concentration
was
increased
79.64%
simulated
resource
solution
to
98.62%
adsorbed
phase.
Both
experimental
theoretical
studies
indicated
that
high
ion
selectivity
for
primarily
due
specific
recognition
ability
(-OH)
group,
enabling
only
undergo
proton
exchange
hydrogen.
strong
material
attributed
not
between
framework
but
also
interactions
nitrogen
(N)
oxygen
(O)
atoms
heterocyclic
rings
Cu2+.
summary,
demonstrates
great
potential
provides
additional
possibilities
enhancing
MOF-based
adsorbents.
Язык: Английский
Fabrication of defect-free MIL-96 membrane via aluminum isopropoxide gel layer towards exceptional H2/CO2 separation
Chemical Engineering Science,
Год журнала:
2025,
Номер
unknown, С. 121600 - 121600
Опубликована: Март 1, 2025
Язык: Английский
Next-generation biomass nanocomposites for heavy metal ion adsorption: innovations and environmental impact
Separation and Purification Technology,
Год журнала:
2025,
Номер
unknown, С. 133157 - 133157
Опубликована: Апрель 1, 2025
Язык: Английский
Preparation of Microelectrolysis Filler Using Coal Slag for the Removal of Hazardous Substances in Contaminated Water
Langmuir,
Год журнала:
2024,
Номер
40(43), С. 23041 - 23050
Опубликована: Окт. 19, 2024
Presently,
the
utilization
of
gasification
slag
in
context
wastewater
treatment
is
constrained.
Furthermore,
presence
dye
and
containing
hazardous
metals
represents
a
significant
threat
to
human
health.
Accordingly,
present
study
prepared
microelectrolytic
filler
(MF)
from
via
high-temperature
roasting
method
evaluated
its
degradation
performance
water
organic
matter
harmful
metal
ions.
The
impact
varying
preparation
conditions,
including
initial
solution
pH
MF
dose,
on
process
was
examined.
removal
methyl
blue
found
be
92.21%
at
an
2,
reaction
time
300
min
dosage
40
g
L
Язык: Английский