Nanomaterials,
Год журнала:
2023,
Номер
13(23), С. 3043 - 3043
Опубликована: Ноя. 29, 2023
Boron-doped
diamond
(BDD)
thin
film
electrodes
have
great
application
potential
in
water
treatment.
However,
the
high
electrode
energy
consumption
due
to
resistance
directly
limits
range
of
existing
BDD
electrodes.
In
this
paper,
BDD/graphene/BDD
(DGD)
sandwich
structure
was
prepared,
which
effectively
improved
conductivity
electrode.
Meanwhile,
can
avoid
degradation
performance
caused
by
large
amount
non-diamond
carbon
introduced
heavy
doping,
such
as
reduction
electrochemical
window
and
decrease
physical
chemical
stability.
The
microstructure
composition
were
characterized
scanning
electron
microscope
(SEM),
atomic
force
microscopy
(AFM),
Raman
spectroscopy,
transmission
(TEM).
Then,
citric
acid
(CA),
catechol,
tetracycline
hydrochloride
(TCH)
DGD
systematically
studied
total
organic
(TOC)
Energy
per
unit
TOC
removal
(ECTOC).
Compared
with
single
electrode,
new
improves
mobility
reduces
mass
transfer
1/3,
showing
better
treatment
performance.
process
dealing
Citric
acid,
step
current
1.35
times
that
utilization
ratio
2.4
(ECTOC)
lower
than
BDD,
especially
Catechol,
reduced
66.9%
BDD.
a
material,
has
good
be
used
for
high-efficiency
electrocatalytic
pollutants.
Environmental Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 12, 2024
Enzyme-mediated
systems
have
been
widely
employed
for
the
biotransformation
of
environmental
contaminants.
However,
catalytic
performance
free
enzymes
is
restricted
by
rapid
loss
their
activity,
stability,
and
reusability.
In
this
work,
we
developed
an
enzyme
immobilization
platform
elaborately
anchoring
fungal
laccase
onto
arginine-functionalized
boron
nitride
nanosheets
(BNNS-Arg@Lac).
BNNS-Arg@Lac
showcased
∼75%
yield
enhanced
stability
against
fluctuating
pH
values
temperatures,
along
with
remarkable
reusability
across
six
consecutive
cycles,
outperforming
natural
(nlaccase).
A
model
pollutant,
atrazine,
was
selected
a
proof-of-concept
demonstration,
given
substantial
public
health
concerns
in
agriculture
runoff.
BNNS-Arg@Lac-catalyzed
atrazine
degradation
rate
nearly
twice
that
nlaccase.
Moreover,
consistently
demonstrated
superior
synthetic
agricultural
wastewater
various
mediator
compared
to
Comprehensive
product
analysis
unraveled
distinct
pathways
Overall,
research
provides
foundation
future
development
enzyme-nanomaterial
hybrids
degrading
chemicals
may
unlock
new
potential
green
efficient
resource
recovery
waste
management
strategies.
The Science of The Total Environment,
Год журнала:
2023,
Номер
909, С. 168511 - 168511
Опубликована: Ноя. 18, 2023
Diclofenac
(DCF),
a
contaminant
of
emerging
concern,
is
non-steroidal
anti-inflammatory
drug
widely
detected
in
water
bodies,
which
demonstrated
harmful
acute
and
chronic
toxicity
toward
algae,
zooplankton
aquatic
invertebrates,
therefore
its
removal
from
impacted
necessary.
DCF
recalcitrant
traditional
treatment
technologies,
thus,
innovative
approaches
are
required.
Among
them,
electrochemical
oxidation
(EO)
has
shown
promising
results.
In
this
research,
an
multidisciplinary
approach
proposed
to
assess
the
diclofenac
wastewater
by
integrating
investigations
on
efficiency
by-product
identification
with
disinfection
capacity
assessment
effect
environmental
geno-toxicity
by-products
generated
through
oxidation.
The
successfully
degraded
achieving
>98
%
efficiency,
operating
NaCl
0.02
M
at
50
A
m-2.
By-product
analyses
showed
formation
five
parental
compounds
decarboxylic
CN
cleavage
reactions.
EO
technique
was
evaluated
carrying
out
microbiological
tests
pathogens
generally
found
environments,
including
two
rod-shaped
Gram-negative
bacteria
(Pseudomonas
aeruginosa
Escherichia
coli),
one
Gram-positive
bacterium
(Bacillus
atrophaeus),
coccus
(Enterococcus
hirae).
Eco-toxicity
freshwater
organisms
(algae,
rotifers
crustaceans)
belonging
trophic
levels
tests.
Genotoxicity
were
carried
Comet
assay,
relative
expression
catalase,
manganese
copper
superoxide
dismutase
genes
crustaceans.
Results
highlight
effectiveness
for
degradation
inactivation
pathogens;
however,
downstream
mixture
results
being
ecosystem.
