Environmental Science and Ecotechnology,
Journal Year:
2024,
Volume and Issue:
22, P. 100469 - 100469
Published: Aug. 3, 2024
Molecular
oxygen
(O2)
is
an
environmentally
friendly,
cost-effective,
and
non-toxic
oxidant.
Activation
of
O2
generates
various
highly
oxidative
reactive
species
(ROS),
which
efficiently
degrade
pollutants
with
minimal
environmental
impact.
Despite
extensive
research
on
the
application
activation
in
remediation,
a
comprehensive
review
addressing
this
topic
currently
lacking.
This
provides
informative
overview
recent
advancements
activation,
focusing
three
primary
strategies:
photocatalytic
chemical
electrochemical
O2.
We
elucidate
respective
mechanisms
these
methods
discuss
their
advantages
disadvantages.
Additionally,
we
thoroughly
analyze
influence
supply,
temperature,
pH
process.
From
electron
transfer
energy
perspectives,
explore
pathways
for
ROS
generation
during
activation.
Finally,
address
challenges
faced
by
researchers
field
future
prospects
utilizing
pollution
control
applications.
detailed
analysis
enhances
our
understanding
valuable
insights
practical
implementation
organic
pollutant
degradation.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(8)
Published: Nov. 22, 2023
Abstract
Semiconductor
photocatalytic
technology
holds
immense
promise
for
converting
sustainable
solar
energy
into
chemically
storable
energy,
with
significant
applications
in
the
realms
of
and
environment.
However,
inherent
issue
rapid
recombination
photogenerated
electrons
holes
hinders
performance
single
photocatalysts.
To
overcome
this
challenge,
construction
2D
S‐scheme
heterojunction
photocatalysts
emerges
as
an
effective
strategy.
The
deliberate
design
dimensionality
ensures
a
substantial
interfacial
area;
while,
charge
transfer
mechanism
facilitates
efficient
separation
maximizes
redox
capabilities.
This
review
commences
fresh
perspective
on
heterojunctions,
followed
by
comprehensive
exploration
preparation
methods
characterization
techniques.
Subsequently,
recent
advancements
are
summarized.
Notably,
behind
activity
enhancement
is
elucidated.
Finally,
prospects
development
presented.
EcoEnergy,
Journal Year:
2023,
Volume and Issue:
1(1), P. 197 - 206
Published: Sept. 1, 2023
Abstract
Dyes
and
antibiotics
as
typical
persistent
organic
pollutants
(POPs)
are
widely
present
in
the
environment,
but
can
hardly
be
removed
completely
by
traditional
water
treatment
methods.
Here,
we
designed
Bi
4
O
5
Br
2
/g‐C
3
N
composite
nanosheets
for
efficient
photocatalytic
removal
of
POPs
water.
The
with
a
heterojunction
structure
exhibited
high
adsorption
activity
tetracycline
(TC)
ciprofloxacin
(CIP)
excellent
cyclic
stability,
owing
to
its
large
specific
surface
area
well
enhanced
charge
separation
visible
light
utilization.
Our
characterization
revealed
that
h
+
·OH
responsible
degradation
TC
CIP.
This
work
provides
insights
into
design
materials
synergy
degradation,
offers
construction
strategy
addressing
increasingly
severe
environmental
issues.
Applied Catalysis B Environment and Energy,
Journal Year:
2024,
Volume and Issue:
345, P. 123689 - 123689
Published: Jan. 3, 2024
The
generation
of
singlet
oxygen
(1O2)
based
on
photocatalytic
activation
O2
is
considered
to
have
important
application
prospects
in
purifying
refractory
organic
pollutants
water.
However,
the
uncertain
dual
pathway
transformation
activated
severely
limits
1O2.
In
this
work,
we
show
a
robust
BiOCl
with
defects
(adjacent
I-substitution
defect
and
Cl
vacancy)
halogen
layer
for
selective
generate
Combining
experiments
theoretical
calculations,
confirm
that
are
beneficial
optimizing
band
structures,
improving
carrier
separation
efficiency,
promoting
adsorption
activation.
More
importantly,
it
confirmed
can
directionally
convert
into
1O2
by
increasing
thermodynamic
conversion
energy
barrier
non-1O2
pathways
serving
as
necessary
site
functions
oxidation
reduction.
Applying
modified
removal
aromatic
water,
found
has
efficient
stable
degradation
efficiency
broad
environmental
adaptability.
This
work
not
only
provides
in-depth
insights
mechanism
produce
1O2,
but
also
lays
foundation
further
development
highly
active
photocatalysts
remediation
conversion.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(44)
Published: Aug. 19, 2023
The
efficient
catalysis
of
nitrogen
(N2
)
into
high-value
N-containing
products
plays
a
crucial
role
in
the
N
economic
cycle.
However,
weak
N2
adsorption
and
invalid
activation
remain
two
major
bottlenecks
rate-determining
steps,
leading
to
low
fixation
performance.
Herein,
an
effective
dual
active
sites
photocatalyst
polyoxometalates
(POMs)-based
metal-organic
frameworks
(MOFs)
is
highlighted
via
altering
coordination
microenvironment
inducing
directional
shunting
photogenerated
carriers
facilitate
/catalyst
interaction
enhance
oxidation
MOFs
create
more
open
unsaturated
metal
cluster
with
unoccupied
d
orbital
possessing
Lewis
acidity
accept
electrons
from
3σg
bonding
for
storage
by
combining
POMs
replace
bidentate
linkers.
act
as
electron
sponges
donating
MOFs,
while
holes
flow
POMs.
hole-rich
strong
capacity
are
easily
involved
oxidizing
adsorbed
.
Taking
UiO-66
(C48
H28
O32
Zr6
Mo72
Fe30
([Mo72
O252
(CH3
COO)12
{Mo2
O7
(H2
O)}2
{H2
Mo2
O8
O)}(H2
O)91
]·150H2
O)
example,
@UiO-66
shows
twofold
enhanced
(250.5
cm3
g-1
than
(122.9
at
P/P0
=
1.
And,
HNO3
yield
702.4
µg
h-1
,
≈7
times
24
higher
This
work
provides
reliable
value
relaying
artificial
fixation.
