Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(24), P. 17955 - 17964
Published: Nov. 29, 2022
Nanofiltration
(NF)
is
an
effective
technology
for
removing
trace
organic
contaminants
(TrOCs),
while
the
inherent
trade-off
effect
between
water
permeance
and
solute
rejections
hinders
its
widespread
application
in
treatment.
Herein,
we
propose
a
novel
scheme
of
"monomers
with
sacrificial
groups"
to
regulate
microstructure
polyamide
active
layer
via
introducing
hydrolyzable
ester
group
onto
piperazine
control
diffusion
interfacial
polymerization
process.
The
achieved
benefits
include
narrowing
pore
size,
improving
interpore
connectivity,
enhancing
microporosity,
reducing
thickness,
which
collectively
realized
simultaneous
improvement
enhancement
TrOCs
rejection
performance.
resulting
membranes
were
superior
both
commercial
membranes,
especially
water-TrOCs
selectivity.
effects
using
new
monomers
on
membrane
physicochemical
properties
systematically
studied,
underlying
mechanisms
enhanced
separation
performance
further
revealed
by
simulating
process
through
density
functional
theory
calculation
measuring
trans-interface
rate
monomers.
This
study
demonstrates
promising
NF
synthesis
strategy
designing
structure
reaction
achieving
excellent
low
energy
input
eScience,
Journal Year:
2023,
Volume and Issue:
4(2), P. 100208 - 100208
Published: Nov. 3, 2023
Present
photocatalysts
for
the
synchronous
cleanup
of
pharmaceuticals
and
heavy
metals
have
several
drawbacks,
including
inadequate
reactive
sites,
inefficient
electron–hole
disassociation,
insufficient
oxidation
reduction
power.
In
this
research,
we
sought
to
address
these
issues
by
using
a
facile
solvothermal-photoreduction
route
develop
an
innovative
plasmonic
S-scheme
heterojunction,
Au/MIL-101(Fe)/BiOBr.
The
screened-out
Au/MIL-101(Fe)/BiOBr
(AMB-2)
works
in
durable
high-performance
manner
both
Cr(VI)
norfloxacin
(NOR)
eradication
under
visible
light,
manifesting
up
53.3
2
times
greater
NOR
abatement
rates,
respectively,
than
BiOBr.
Remarkably,
AMB-2's
ability
remove
Cr(VI)-NOR
co-existence
system
is
appreciably
better
sole-Cr(VI)
environment;
synergy
among
Cr(VI),
NOR,
AMB-2
results
utilization
photo-induced
carriers,
yielding
desirable
capacity
decontaminating
synchronously.
integration
MOF-based
heterojunctions
effect
contributes
markedly
reinforced
photocatalytic
increasing
number
active
augmenting
visible-light
absorbance,
boosting
efficient
disassociation
redistribution
powerful
photo-carriers,
elevating
generation
substances.
We
provide
details
mechanism,
decomposition
process,
bio-toxicity
intermediates.
This
synergistic
strategy
modifying
with
noble
metal
opens
new
horizons
devising
excellent
photosystems
environment
purification.
Advanced Powder Materials,
Journal Year:
2024,
Volume and Issue:
3(3), P. 100183 - 100183
Published: Feb. 20, 2024
Devising
exceptional
S-scheme
heterojunction
photocatalysts
utilized
in
annihilating
pharmaceuticals
and
chromium
contamination
is
significant
for
addressing
the
problem
of
global
water
pollution.
In
this
work,
a
chemically
bonded
Mn0.5Cd0.5S/BiOBr
heterostructure
with
oxygen
vacancies
ingeniously
developed
through
facile
in-situ
solvothermal
synthesis.
The
designed
exhibits
eminently
reinforced
photo-activity
destruction
tetracycline
hydrochloride
Cr
(VI)
as
compared
its
individual
components.
This
substantial
photo-redox
performance
amelioration
benefitted
from
creation
an
intense
internal
electric
field
(IEF)
via
supplying
powerful
driving
force
migration
highway
by
interfacial
chemical
bond
to
foster
electron/hole
disintegration.
More
intriguingly,
IEF
at
hetero-interface
drives
fast
consumption
photo-induced
holes
Mn0.5Cd0.5S
photoelectrons
BiOBr,
profoundly
boosting
enrichment
active
photo-carriers
sparing
photo-corrosion
Mn0.5Cd0.5S.
Furthermore,
anti-interference
property
can
work
efficiently
real
matrices.
Multiple
uses
recycled
Mn0·5Cd0·5S/BiOBr
evidence
prominent
robustness
stability.
achievement
indicates
vast
potential
photosystems
structural
defects
design
photo-responsive
materials
effective
wastewater
treatment.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(14), P. 7975 - 8013
Published: Jan. 1, 2024
Metal/covalent
organic
frameworks
(MOFs/COFs),
with
orderly
aligned
pores
and
adjustable
pore
characteristics,
offer
advantages
over
traditional
fillers
in
constructing
thin
film
nanocomposite
(TFN)
membranes
for
task-specific
separations.
Water Research X,
Journal Year:
2023,
Volume and Issue:
19, P. 100172 - 100172
Published: Feb. 20, 2023
Over
the
last
few
decades,
developing
ultra-permeable
nanofiltration
(UPNF)
membranes
has
been
a
focus
research
area
to
support
NF-based
water
treatment.
Nevertheless,
there
have
ongoing
debates
and
doubts
on
need
for
UPNF
membranes.
In
this
work,
we
share
our
perspectives
why
are
desired
We
analyze
specific
energy
consumption
(SEC)
of
NF
processes
under
various
application
scenarios,
which
reveals
potential
reducing
SEC
by
1/3
2/3
depending
prevailing
transmembrane
osmotic
pressure
difference.
Furthermore,
could
potentially
enable
new
process
opportunities.
Vacuum-driven
submerged
NF-modules
be
retrofitted
existing
water/wastewater
treatment
plants,
offering
lower
cost
compared
conventional
systems.
Their
use
in
membrane
bioreactors
(NF-MBR)
can
recycle
wastewater
into
high-quality
permeate
water,
enables
energy-efficient
reuse
single
step.
The
ability
retaining
soluble
organics
may
further
extend
NF-MBR
anaerobic
dilute
municipal
wastewater.
Critical
analysis
development
huge
rooms
attain
improved
selectivity
antifouling
performance.
Our
perspective
paper
offers
important
insights
future
technology,
lead
paradigm
shift
burgeoning
field.
